Handle unit, power tool and power tool system

Abstract

A handle unit (506) for a machine tool (500), in particular for a portable machine tool (500), preferably for a grass and / or shrub shears, the handle unit (506) being provided for an ergonomic manual guidance of the machine tool (500) for right- and left-handed users, the handle unit (506) comprising a housing (200) having a varying cylindrical shape, preferably for configuring a pistol-grip single-hand handle, the handle unit defining a longitudinal axis (510) along a main extension direction (216) and a transverse axis (526) transverse thereto, the handle unit having two opposing recesses (218, 218') on a side of the housing (200) exiting along the transverse axis (526). The handle unit has at least one support element (202) which can be selectively arranged in at least one of the two recesses and extends at least partially along the transverse axis, in particular for supporting a palm of a user's hand.

Description

Technical Field

[0001] This invention relates to handle units for machine tools, particularly for portable machine tools, especially for grass and / or shrub shears. The invention also relates to machine tools and machine tool systems having such handle units. Background Technology

[0002] A handle unit for a machine tool, particularly for a portable machine tool, preferably for grass and / or shrub shears, has been provided, wherein the handle unit is configured with ergonomic manual guidance for right-handed and left-handed users of the machine tool, wherein the handle unit includes a housing with a variable cylindrical shape, preferably configured to construct a single-handed handle similar to a pistol grip, wherein the handle unit defines a longitudinal axis and a transverse axis transverse to it along a main extension direction, wherein the handle unit has two opposing, particularly symmetrically constructed, digging sections on the side of the housing opposite to the transverse axis. Summary of the Invention

[0003] The starting point of this invention is a handle unit for a machine tool, particularly for a portable machine tool, preferably for grass and / or shrub shears, wherein the handle unit is provided with ergonomic manual guidance for right-handed and left-handed users of the machine tool, wherein the handle unit includes a housing with a varying cylindrical shape, preferably for constructing a pistol grip-style single-handed handle, wherein the handle unit defines a longitudinal axis and a transverse axis along the main extension direction, wherein the handle unit has two opposing, particularly symmetrically constructed digging sections on the side of the housing opposite to the transverse axis.

[0004] It is proposed that the handle unit has at least one support element that can be selectively arranged in at least one of at least two digging sections and extends at least partially along the transverse axis, particularly for supporting the palm of the user's hand.

[0005] With the configuration of the handle unit according to the invention, an advantageous ergonomic handle for the machine tool can be achieved. This allows for easy guidance of the machine tool using the handle unit, which is advantageous for both right-handed and left-handed users.

[0006] A cutting device, particularly a grass and shrub cutting device, can be envisioned for use in machine tools, especially handheld machine tools, preferably grass and shrub shears. The cutting device device has a cutting device unit with at least one rotatable and drivable rotary cutting tool, particularly a cutting blade, capable of complete rotation about a rotation axis. The rotary cutting tool includes at least one cutting element. The cutting device unit also has at least one fixed cutting tool, particularly a corresponding cutting blade, wherein the at least one fixed cutting tool, particularly the corresponding cutting blade, is supported in a manner rotatable about the rotation axis and configured to be fixed in at least two different positions around the rotation axis.

[0007] The term "cutting device" should be understood as at least a part of the machine tool, preferably a sub-assembly, and particularly preferably a sub-assembly detachable from the overall machine tool. Alternatively, the cutting device can comprise the entire machine tool. Preferably, the machine tool is constructed as a portable handheld machine tool, preferably for single-handed operation, and preferably has a mass of a maximum of 1 kg, preferably a maximum of 800 g, particularly preferably a maximum of 700 g, and completely particularly preferably a maximum of 600 g, especially in a decoupled state from the cutting device. Preferably, the machine tool is composed of an electric shrub and / or grass shearing mechanism. Preferably, the cutting device is configured as part of the machine tool (particularly dependent on the adjustment of the cutting device, preferably constructed) as grass and / or shrub shears. Preferably, the cutting device is constructed as part of the machine tool as grass and / or shrub shears, particularly dependent on the cutting direction of the cutting device relative to the longitudinal axis of the machine tool. The "longitudinal axis" of the object should be particularly understood as an axis parallel to the longest side of a smallest geometric cube that completely surrounds the object, preferably passing through the geometric center point of the object, particularly the center point of the cube. Preferably, the cutting device is coupled to a machine tool for use as a grass and / or shrub shear. By the fact that the object is used for a specific function, it should preferably be understood that the object realizes and / or performs this specific function in at least one application and / or operating state. "Operating state" should preferably be understood as a state in which the cutting device is prepared for a cutting process and / or cutting operation, and / or at least coupled to a machine tool, and / or in cutting operation, in which the cutting device, in particular a rotary cutting tool, is driven by the machine tool to rotate about a rotation axis.

[0008] Preferably, at least one fixed cutting tool, particularly corresponding to the cutting blade, is supported in a manner rotatable about a rotation axis and configured to be fixed in at least two different positions where the at least one fixed cutting tool can rotate about the rotation axis.

[0009] Preferably, the cutting device has a tool interface unit. Preferably, the tool interface unit is configured for particularly detachable connection to a particularly portable machine tool. In particular, the tool interface unit is configured to allow the cutting device unit, preferably the entire cutting device, to be connected to the machine tool in a particularly detachable configuration. Preferably, the tool interface unit has at least one housing unit. Preferably, the tool interface unit has a fixing unit. Preferably, the fixing unit includes at least one stabilizing element. Preferably, the at least one stabilizing element is constructed of metal. Preferably, at least one stabilizing element is at least substantially, preferably entirely, arranged within the housing unit. Preferably, the housing unit is at least substantially, preferably entirely, constructed of plastic. Preferably, at least one stabilizing element is immovably connected to the housing unit, preferably at least partially, by a helical connection.

[0010] Preferably, the tool interface unit has a transmission unit. Preferably, the fixing unit, and more preferably at least one stabilizing element, is provided for a particularly movable, preferably rotatable support for the transmission unit. Preferably, the transmission unit is movably supported, and more preferably rotatably supported, and connected to the fixing unit, and more preferably at least one stabilizing element.

[0011] Preferably, at least one fixed cutting tool is immovably connected to the fixed unit relative to at least one stabilizing element, particularly in at least one position. Preferably, at least one fixed cutting tool is immovably fixed to the fixed unit relative to at least one stabilizing element in at least two positions. Preferably, at least one fixed cutting tool, particularly relative to the stabilizing element and particularly relative to the housing unit, is configured to be fixed in exactly two different positions where the fixed cutting tool rotates about a rotation axis. This allows for advantageous cutting efficiency. It enables advantageous efficiency in cutting materials.

[0012] Preferably, at least one fixed cutting tool, particularly on the stabilizing element and especially on the transmission unit, can be fixedly constructed to prevent rotation about the axis of rotation. This allows for advantageous and intuitive adjustment of the cutting device assembly. It also allows for advantageous and rapid adjustment of the cutting device assembly.

[0013] At least one fixed cutting tool can be alternatively and / or supplementarily fixed immovably in more than two, especially at least three, four, five, or similar positions relative to at least one stabilizing element and fixed unit. At least one fixed cutting tool can be configured to be fixed, particularly relative to the stabilizing element and particularly relative to the housing unit, in at least two, three, four, five, or similar different positions where the fixed cutting tool rotates a maximum of 180°, preferably a maximum of 120°, particularly preferably a maximum of 90° about the axis of rotation. For example, at least one fixed cutting tool can be configured to be fixed, particularly relative to the stabilizing element and particularly relative to the housing unit, in three different positions where the fixed cutting tool rotates a maximum of 90° about the axis of rotation, particularly every 45°. For example, at least one fixed cutting tool can be configured to be fixed, particularly relative to the stabilizing element and particularly relative to the housing unit, in five, particularly four, or particularly depending on the symmetry of the fixed cutting tool, where the fixed cutting tool rotates a maximum of 180° about the axis of rotation. Particularly preferably, at least one fixed cutting tool is configured to be fixed, particularly relative to the stabilizing element and particularly relative to the housing unit, in two different positions where the fixed cutting tool rotates a maximum of 90° about the axis of rotation. In particular, two distinct positions, specifically corresponding to the grass cutting position and the shrub cutting position, and especially the hedge cutting position, are characterized by at least one fixed cutting tool being able to be fixed in said position when rotated a maximum of 90° about the axis of rotation, particularly relative to the stabilizing element and particularly relative to the housing unit. Particularly preferably, at least one fixed cutting tool is configured to be fixed in two distinct positions, particularly relative to the stabilizing element and particularly relative to the housing unit, when the fixed cutting tool rotates a maximum of 90° about the axis of rotation. Specifically, the grass cutting position corresponds to the position of at least one fixed cutting tool, specifically the position where the longitudinal axis of the fixed cutting tool is oriented at least substantially parallel to the longitudinal axis of the machine tool. "Substantially parallel" should be understood here particularly as an orientation relative to a reference direction, particularly within a plane, wherein the deviation of this direction from the reference direction is particularly less than 8°, advantageously less than 5°, and particularly advantageously less than 2°. Specifically, the shrub cutting position, and especially the hedge cutting position, corresponds to the position of at least one fixed cutting tool, specifically the position where the longitudinal axis of the fixed cutting tool is oriented at least substantially perpendicular to the longitudinal axis of the machine tool. The position of the fixed cutting tool should be synonymous with the location of the fixed cutting tool. Here, the expression "basically perpendicular" should specifically define an orientation relative to a reference direction, wherein, especially when viewed in the projection plane, this direction and the reference direction form an angle of 90°, the maximum deviation of which is particularly less than 8°, advantageously less than 5°, and particularly advantageously less than 2°.

[0014] Preferably, at least one fixed cutting tool is connected to the transmission unit in such a way that it cannot be driven to rotate relative to at least one stabilizing element by the transmission unit. Preferably, the transmission unit has a rotating shaft unit. Preferably, the rotating shaft unit is not configured to drive the fixed cutting tool. Preferably, at least one fixed cutting tool is connected to the transmission unit in a manner decoupled from the rotating shaft unit, preferably to avoid torque being transmitted from the rotating shaft unit to the fixed cutting tool. Preferably, at least one fixed cutting tool is connected to the transmission unit so that it can rotate, preferably in a limited manner, relative to the rotating shaft unit.

[0015] Preferably, at least one fixed cutting tool is connected to the transmission unit so as to be movable relative to the rotating shaft unit, particularly capable of rotating by a maximum rotation angle. Preferably, at least one fixed cutting tool is connected to the transmission unit so as to be movable relative to the rotating shaft unit when the rotating shaft unit is stationary, particularly capable of rotating about the rotating shaft by a maximum of 180°, more preferably a maximum of 120°, and especially preferably a maximum of 90°. Preferably, at least one fixed cutting tool is fixedly, particularly immovably, connected to the machine tool.

[0016] Preferably, the rotary shaft unit is configured to drive at least one rotary cutting tool. Preferably, the rotary shaft unit is fixedly connected to at least one rotary cutting tool for driving the at least one rotary cutting tool. Preferably, at least one rotary cutting tool is movably connected to the fixed unit relative to at least one stabilizing element, preferably fully rotatable, especially infinitely rotatable in one rotational direction.

[0017] Preferably, at least one rotary cutting tool is fixedly connected to the rotary axis unit relative to the rotary axis unit. Preferably, the rotary axis unit is movably, preferably fully rotatable, especially capable of infinite rotation in one direction, connected to the fixed unit, and particularly supported on the fixed unit. Preferably, the rotary axis unit is movably, preferably fully rotatable, especially capable of infinite rotation in one direction, connected to at least one stabilizing element, and particularly supported on at least one stabilizing element.

[0018] Preferably, at least one fixed cutting tool has at least two protruding tips arranged radially away from each other, all of which are arranged on an imaginary ellipse substantially different from a circle. This enables advantageous cutting efficiency for the material being cut. Preferably, at least one fixed cutting tool comprises at least two, preferably at least four, particularly preferably at least eight, very particularly preferably at least ten tips that are preferably arranged radially away from each other, especially in pairs, and particularly protruding relative to the axis of rotation when viewed parallel to the axis of rotation. Preferably, at least two, preferably all, tips are arranged on an imaginary ellipse substantially different from a circle. Preferably, especially when viewed parallel to the axis of rotation, the center of the ellipse is located on the axis of rotation. Preferably, if the ellipse has two foci, each foci being arranged at least 10% of the radius of the circle from the center of the circle, and if the center of the circle is located at the center of the ellipse, then the ellipse is substantially different from a circle. Preferably, preferably when viewed parallel to the axis of rotation, at least two tips are arranged radially away from, especially oppositely, the fixing plane of the at least one fixed cutting tool. Preferably, the plane of the fixing device is oriented perpendicular to the longitudinal axis of at least one fixed cutting tool. Preferably, and more preferably viewed parallel to the axis of rotation, all tips are arranged in pairs facing away from, and particularly opposite to, the plane of the fixing device of at least one fixed cutting tool. Preferably, and more preferably viewed parallel to the axis of rotation, at least two, preferably at least three, particularly preferably at least four, and very particularly preferably at least five tips are arranged on one side of the plane of the fixing device of at least one fixed cutting tool.

[0019] Preferably, at least one fixed cutting tool has at least two capturing tips that are partially opposite to each other in the circumferential direction, wherein all capturing tips are arranged on an imaginary fixed circle. An advantageous capturing radius for cutting material can be achieved on the fixed cutting tool. Preferably, and more preferably viewed parallel to the axis of rotation, at least one fixed cutting tool has at least two, preferably at least four, particularly preferably at least six, very particularly preferably at least eight capturing tips that are partially opposite to each other and project in the circumferential direction, especially relative to the axis of rotation. Preferably, at least two, preferably all, capturing tips are arranged on an imaginary fixed circle. Preferably, the radius of the fixed circle is smaller than the major axis of the ellipse. Preferably, the radius of the fixed circle is smaller than the minor axis of the ellipse. Preferably, the center of the fixed circle is arranged on the axis of rotation, especially when viewed parallel to the axis of rotation.

[0020] Preferably, at least one rotary cutting tool has at least two, more preferably at least three cutting elements. Alternatively, at least one rotary cutting tool may have only one cutting element or at least four, five, six, or similar cutting elements.

[0021] Preferably, at least one rotary cutting tool has at least two tips arranged on an imaginary circle of rotation, wherein the circle of rotation is spaced from the ellipse by at least 10% of the radius of the circle of rotation, particularly by a radially inward distance. This enables the realization of advantageous capturing characteristics of the cutting device for cutting material, as defined by the fixed cutting tool. Preferably, at least one rotary cutting tool has at least two, preferably at least three tips. Alternatively, at least one rotary cutting tool may have only one tip or at least four, at least five, at least six, or similar tips. Preferably, at least two tips are projecting in the circumferential direction, particularly relative to the axis of rotation, particularly along the axis of rotation. Preferably, at least one rotary cutting tool has a tip on each cutting element. Preferably, at least two, particularly at least three, preferably all, tips, especially the tips of the rotary cutting tool, are arranged on an imaginary circle of rotation. Preferably, particularly when viewed parallel to the axis of rotation, the center point of the circle of rotation is located on the axis of rotation. Preferably, the capturing tip and the tip of at least one rotary cutting tool project in opposite circumferential directions.

[0022] Preferably, the circle of rotation is radially spaced from the ellipse by at least 10%, more preferably at least 20%, and particularly preferably at least 25% of the radius of the circle of rotation. Preferably, the circle of rotation is completely arranged within the ellipse.

[0023] Preferably, at least one rotary cutting tool has at least two tips arranged on an imaginary rotating circle, wherein the imaginary fixed circle and the imaginary rotating circle have the same radius, with a maximum deviation of 10% of the larger radius. Advantageously, a cutting area for cutting material consistent with that of the rotary cutting tool can be achieved on the fixed cutting tool. In particular, the imaginary fixed circle and the imaginary rotating circle have the same radius, with a maximum deviation of 10% of the larger radius, preferably a maximum of 5%, and particularly preferably a maximum of 3%. Particularly preferably, the rotating circle is constructed to the same size as the fixed circle. Preferably, the radius, especially the diameter, of the rotating circle is constructed to the same size as the radius, especially the diameter, of the fixed circle.

[0024] Preferably, all cutting elements are constructed in the same shape, and especially in the same size. Preferably, all cutting elements are arranged at the same spacing from each other. Preferably, at least one cutting element is sickle-shaped. Preferably, all cutting elements are sickle-shaped. Preferably, the rotary cutting tool and the stationary cutting tool are ground in opposite directions in the circumferential direction, especially for jointly cutting preferred grass stems, shrub branches, twigs, leaves, or similar materials. Preferably, the cutting edge of the sickle-shaped cutting element is ground. Preferably, the cutting edge of at least one cutting element is the outer edge of at least one cutting element facing the axis of rotation. Preferably, the fixed cutting edge of at least one stationary cutting tool is ground.

[0025] Preferably, the cutting edge of at least one sickle-shaped cutting element is shaped to generate a cutting force vector when in contact with the material being cut, such as, in particular, branches, grass stems, shrub branches or the like. This cutting force vector is centered between the tangential direction at the tip of at least one rotating cutting tool on the corresponding cutting element and the opposite direction of the cutting motion of the fixed cutting tool, with a maximum deviation of 15°.

[0026] Preferably, at least one cutting element, and preferably all cutting elements, are respectively configured, preferably specially shaped, for generating a cutting force vector, particularly on the cutting edge. Preferably, the cutting force vector is oriented in a direction that is centrally oriented between the tangential direction at the tip of the respective cutting element and the opposite direction of the cutting motion of at least one fixed cutting tool, with a maximum deviation of 15°.

[0027] Preferably, the cutting motion of at least one fixed cutting tool is oriented in the opposite direction to the longitudinal axis of the fixed cutting tool, with a maximum deviation of 45°, preferably a maximum of 30°, and particularly preferably a maximum of 15°. Preferably, the cutting motion of at least one fixed cutting tool is oriented in the opposite direction to the axis of rotation, with a maximum deviation of 45°, preferably a maximum of 30°, and particularly preferably a maximum of 15°.

[0028] Preferably, at least one fixed cutting tool is at least partially constructed as a hollow cylindrical disk, which, viewed parallel to the axis of rotation, extends in a closed manner in terms of material between a defined fixed inner radius and a defined fixed outer radius. The at least one fixed cutting tool has at least two, and in particular a plurality of, radially protruding elements, all of which partially define at least one cutting opening in the radial direction between the defined fixed outer radius of the fixed cutting tool and the tip constructed on the respective radially protruding element. This allows for the advantageous unfolding of the cutting material to different portions of the at least one fixed cutting tool. Preferably, at least one fixed cutting tool is at least partially constructed as a hollow cylindrical disk, which, viewed parallel to the axis of rotation, extends in a closed manner in terms of material between a defined fixed inner radius and a defined fixed outer radius. Preferably, at least one fixed cutting tool has a fixed cutting body, which is constructed as a hollow cylindrical disk, which, viewed parallel to the axis of rotation, extends in a closed manner in terms of material between a defined imaginary fixed inner radius and a defined imaginary fixed outer radius. Preferably, viewed parallel to the axis of rotation, the fixed cutting body is completely defined by exactly one recess, preferably a fastening recess. Preferably, viewed parallel to the axis of rotation, the fastening recess is arranged at the geometric center of the fixed cutting tool. The fixed cutting body can alternatively or supplementarily define additional recesses between an imaginary fixed inner radius and an imaginary fixed outer radius, particularly when viewed parallel to the axis of rotation, said additional recesses are preferably smaller than the fastening recess. Preferably, the imaginary fixed outer radius is smaller than the radius of the rotation circle and / or the fixed circle, preferably at least 20% smaller relative to the larger radius.

[0029] Preferably, at least one fixed cutting tool has at least two, and more particularly, a plurality of radial protrusions arranged at least 8 mm apart from each other. This configuration can reduce the risk of difficulty in capturing large pieces of material. Preferably, at least one fixed cutting tool has at least two, and more particularly, a plurality of radial protrusions. Preferably, at least one fixed cutting tool has at least two, and more particularly, at least four, preferably at least six, particularly preferably at least eight, and very particularly preferably at least ten radial protrusions. Preferably, at least one fixed cutting tool comprises at least two, preferably at least four, especially at least six, particularly preferably at least eight, and very particularly preferably at least ten (preferably viewed parallel to the axis of rotation) radial protrusions that are arranged opposite to each other, preferably in pairs, and project radially, particularly relative to the axis of rotation. Preferably, the fixed cutting edge of at least one fixed cutting tool is the outer cutting edge of at least one fixed cutting tool opposite to the axis of rotation, located on two radial protrusions on the fixed cutting body and between two radial protrusions.

[0030] Preferably, viewed parallel to the axis of rotation, the radial protrusions partially define at least one cutting opening between the fixed outer radius defined by the fixed cutting tool and the tip constructed on the respective radial protrusion. Preferably, especially viewed parallel to the axis of rotation, the radial protrusions partially define at least one cutting opening between the defined fixed outer radius and the ellipse. Preferably, at least one cutting opening, and more preferably all cutting openings, are preferably constructed unrestricted by the fixed cutting tool at their radial ends.

[0031] Preferably, at least two radially protruding elements extend radially from the fixed cutting body, particularly from an imaginary fixed outer radius, to the tip of at least one fixed cutting tool, particularly to an imaginary elliptical extension. Preferably, at least one fixed tool element consists of the fixed cutting body and at least two, preferably at least ten, radially protruding elements.

[0032] Preferably, at least two radial protrusions are arranged with a spacing of at least 6 mm, preferably less than 8 mm. Preferably, the minimum spacing between two of the radial protrusions is located at one of the capturing tips. Preferably, at least one fixed cutting tool has capturing tips on at least eight, especially exactly eight, radial protrusions. Preferably, at least one fixed cutting tool has at least eight, especially exactly eight, capturing tips. Preferably, at least two radial protrusions are arranged with a spacing of at most 16 mm, especially at most 12 mm.

[0033] Preferably, at least one rotary cutting tool is at least partially constructed as a hollow cylindrical disk, which, viewed parallel to the axis of rotation, extends in a material-closed manner between a defined imaginary inner radius of rotation and a defined imaginary outer radius of rotation, wherein at least one cutting element extends from the defined imaginary outer radius of rotation to a defined imaginary maximum cutting radius, which is at least 120%, preferably at least 150%, of the defined imaginary outer radius of rotation. Advantageously, a consistently high torque can be achieved on the cutting element. Preferably, at least one rotary cutting tool is at least partially constructed as a hollow cylindrical disk, which, viewed parallel to the axis of rotation, extends in a material-closed manner between a defined imaginary inner radius of rotation and a defined imaginary outer radius of rotation. Preferably, at least one rotary cutting tool has a rotary cutting body constructed as a hollow cylindrical disk, which, viewed parallel to the axis of rotation, extends in a material-closed manner between a defined imaginary inner radius of rotation and a defined imaginary outer radius of rotation.

[0034] Preferably, viewed parallel to the axis of rotation, the rotating cutting body is completely confined, particularly around the central recess on the axis of rotation. Preferably, viewed parallel to the axis of rotation, the central recess is located at the geometric center of the fixed cutting tool. Furthermore, particularly viewed parallel to the axis of rotation, the rotating cutting body can be completely confined between an imaginary inner radius of rotation and an imaginary outer radius of rotation, wherein the recesses are preferably (particularly by a factor of at least ten) smaller than the central recess. Preferably, the imaginary outer radius of rotation is smaller than the radius of the rotating circle and / or the fixed circle, preferably at least 20% smaller relative to the larger radius. Preferably, the imaginary outer radius of rotation is smaller than the imaginary fixed outer radius, preferably at most 20% smaller relative to the larger radius.

[0035] Preferably, at least one cutting element, more preferably at least three cutting elements, extend from a defined imaginary outer radius of rotation to a defined imaginary maximum cutting radius. Preferably, at least one cutting element, more preferably at least three cutting elements, extend from the defined imaginary outer radius of rotation, particularly to the tip of at least one rotary cutting tool. Preferably, the cutting radius is at least 120%, preferably at least 150% of the defined outer radius of rotation. Preferably, the cutting radius is as large as the radius of the rotation circle and / or the radius of the stationary circle.

[0036] Preferably, at least one fixed cutting tool is configured to be doubly rotationally symmetrical about the axis of rotation. This allows for advantageous cuts in both directions at the hedge cutting position. Preferably, at least one fixed cutting tool is configured symmetrically about 180° of rotation about the axis of rotation. Preferably, the radial protrusions and tips of at least one fixed cutting tool are each configured in pairs, doubly, rotationally symmetrically about the axis of rotation. Alternatively, at least one fixed cutting tool can be configured to be triple, quadruple, quintuple, or similarly rotationally symmetrical about the axis of rotation.

[0037] Preferably, at least one rotary cutting tool is constructed with triple rotational symmetry about the rotation axis. Preferably, at least one rotary cutting tool is constructed with symmetry relative to a 120° rotation about the rotation axis. Preferably, the cutting element and tip of at least one rotary cutting tool are each constructed with triple rotational symmetry about the rotation axis. Alternatively, at least one rotary cutting tool can be constructed with double, quadruple, quintuple, or similar rotational symmetry or asymmetry in rotation about the rotation axis. For example, the cutting element and tip of at least one rotary cutting tool can be constructed with triple rotational symmetry about the rotation axis, while the rotary cutting body is constructed with quadruple rotational symmetry. In particular, the symmetry configuration of the cutting element and tip of at least one rotary cutting tool can differ from the symmetry configuration of the rotary cutting body.

[0038] Preferably, the imaginary center point of at least one fixed cutting tool is arranged on the rotation axis. Preferably, the imaginary center point of the rotary cutting tool is arranged on the rotation axis. Preferably, at least one rotary cutting tool is configured to be driven by a transmission unit to rotate about the rotation axis, while the fixed cutting tool is fixed in one of at least two positions, particularly preferably a grass cutting position or a shrub cutting position. Preferably, at least one rotary cutting tool and at least one fixed cutting tool are arranged parallel to the rotation axis, offset from each other, particularly side by side.

[0039] Preferably, viewed parallel to the axis of rotation, at least one rotary cutting tool, together with at least one fixed cutting tool, completely defines at least one through-hole, particularly radially, on at least two of the at least three cutting elements at each rotation angle of the rotary cutting tool about the axis of rotation.

[0040] Preferably, the through-opening, viewed parallel to the reference axis (here exemplarily the axis of rotation) and bounded by at least one reference object (here exemplarily two reference objects), is an opening that is completely bounded to the projection plane in a parallel projection relative to the axis of rotation on the projection plane. Preferably, the through-opening, viewed parallel to the reference axis (here exemplarily the axis of rotation) and bounded by at least one reference object (here exemplarily two reference objects), is an opening that transmits light parallel to the reference axis to a projection plane oriented perpendicular to the reference direction, and is completely bounded by shadows (projected onto the projection plane by at least one reference object). Preferably, the through-opening is configured on a side facing the assumed end of the reference axis (here exemplarily the axis of rotation) to be unbound by at least one reference object. Preferably, the through-opening in the projection plane has a diameter of at least 0.1 mm. 2 Preferably at least 1mm 2 Especially preferred is at least 10mm 2 The area.

[0041] Preferably, at least two, and preferably all through-holes are partially defined by at least one rotary cutting tool and partially defined by at least one fixed cutting tool. Preferably, at least two, and preferably all through-holes are defined solely by at least one rotary cutting tool and by at least one fixed cutting tool. Preferably, at least two, and preferably all through-holes are defined at the ends facing the axis of rotation, particularly radially inward, by at least one fixed cutting tool, particularly by a fixed cutting edge. Preferably, at least two, and preferably all through-holes are defined at the ends facing away from the axis of rotation, particularly radially outward, by at least one rotary cutting tool, particularly by a cutting edge. Preferably, at least two, and preferably all through-holes are defined by both a fixed cutting edge and a cutting edge.

[0042] Preferably, viewed parallel to the axis of rotation, at least one rotary cutting tool, together with at least one fixed cutting tool, completely defines two to four through-holes on the cutting elements at each angle of the at least one rotary cutting tool around the axis of rotation, and on all cutting elements, especially on at least three cutting elements, particularly in the radial direction. This enables an advantageous, constant force transfer from the at least one rotary cutting tool to the material being cut.

[0043] Preferably, viewed parallel to the axis of rotation, and more preferably in the direction of the axis of rotation, at least one rotary cutting tool, together with at least one fixed cutting tool, completely defines at least one through-opening, particularly radially, on at least two cutting elements at least one rotating angle about the axis of rotation, wherein the through-opening is defined on different surfaces, preferably measured in a projected plane. In the force transmission from at least one rotary cutting tool to the cutting material, it is advantageous to avoid catching additional cutting material.

[0044] Preferably, in at least one rotation angle of at least one rotary cutting tool about the axis of rotation, all two, especially three, especially four, fully defined through-holes, viewed from at least one rotary cutting tool and at least one fixed cutting tool parallel to the axis of rotation, are defined to different surfaces. Preferably, two through-holes, particularly radially defined, viewed from at least one rotary cutting tool and at least one fixed cutting tool parallel to the axis of rotation, are not defined to the same surface in any rotation angle of at least one rotary cutting tool about the axis of rotation.

[0045] Preferably, viewed parallel to the axis of rotation, at least one rotary cutting tool, together with at least one fixed cutting tool, completely defines at least one through-hole, particularly radially, on all, preferably at least three cutting elements, within at least one rotation angle of the rotary cutting tool about the axis of rotation. This enables advantageous cutting efficiency with favorable torque utilization.

[0046] Preferably, the cutting device unit has exactly one fixed cutting tool. Preferably, the cutting device unit has exactly one rotary cutting tool.

[0047] Preferably, the rotatability of at least one fixed cutting tool is limited to a maximum angle, particularly a maximum of 130°, preferably a maximum of 90°. Preferably, at least one fixed cutting tool is connected to the transmission unit in a manner that allows restricted movement relative to at least one stabilizing element, particularly the ability to rotate by a maximum rotation angle. Preferably, at least one fixed cutting tool is connected to the transmission unit in a manner that allows movable rotation relative to at least one stabilizing element, particularly (preferably about a rotation axis), up to a maximum of 180°, preferably a maximum of 130°, particularly preferably a maximum of 120°, and very particularly preferably a maximum of 90°. Preferably, at least one fixed cutting tool is connected to the transmission unit in a manner that allows movable rotation relative to the housing unit, particularly (preferably about a rotation axis), up to a maximum of 180°, preferably a maximum of 130°, particularly preferably a maximum of 120°, and very particularly preferably a maximum of 90°. Preferably, at least one fixed cutting tool is connected to the transmission unit in such a way that it can be movably rotated relative to the longitudinal axis of the machine tool, particularly (preferably about the axis of rotation) by a maximum of 180°, preferably a maximum of 130°, particularly preferably a maximum of 120°, and completely particularly preferably a maximum of 90°. Preferably, at least two positions, particularly orientations, of the at least one fixed cutting tool are end positions of the at least one fixed cutting tool at a maximum rotation angle about the axis of rotation. Alternatively, the rotatability of the at least one fixed cutting tool in the direction of rotation about the axis of rotation can be configured to be unrestricted. It is possible to advantageously and uncomplicatedly locate at least two positions where the at least one fixed cutting tool can be fixed, particularly hedge cutting positions and grass cutting positions. It is possible to advantageously and intuitively change the cutting position. In particular, when changing positions, by maintaining the lowest possible rotation, the load on the at least one fixed cutting tool, particularly the load on the transmission unit, can be kept at a low level.

[0048] Preferably, the cutting device includes a transmission unit, particularly the aforementioned transmission unit, having at least one output shaft for driving at least one rotary cutting tool, the output shaft being oriented parallel to and offset from the axis of rotation. Preferably, the at least one output shaft is partially configured as a gear element. Preferably, the at least one output shaft is rotatably supported on at least one stabilizing element, particularly around a machine output shaft and / or a machine output rotation axis. Preferably, the at least one output shaft extends through at least one stabilizing element. Preferably, the at least one output shaft is configured on the machine side of the at least one stabilizing element for coupling with the machine output shaft of the machine tool, and is at least partially configured as a gear element on the transmission side of the at least one stabilizing element. Preferably, the machine side of the at least one stabilizing element is the side of the at least one stabilizing element facing the largest outer side of a smallest imaginary cube that completely surrounds the at least one stabilizing element. Preferably, the transmission side of the at least one stabilizing element is the side of the at least one stabilizing element facing the largest outer side of a smallest imaginary cube that completely surrounds the at least one stabilizing element. Preferably, the machine side and transmission side of the at least one stabilizing element are oriented opposite to each other. Preferably, the transmission unit has at least one transmission gear element. Preferably, the at least one transmission gear element is rotatably supported on at least one stabilizing element. Preferably, the at least one transmission gear element is at least substantially arranged on the transmission side of the at least one stabilizing element. Preferably, the transmission unit includes a rotating shaft unit. Preferably, the rotating shaft unit is rotatably supported on at least one stabilizing element about a rotation axis. Preferably, the rotating shaft unit is configured to connect to at least one rotary cutting tool. Preferably, the rotating shaft unit is configured for torque transmission from the transmission gear element to the at least one rotary cutting tool. Preferably, the at least one transmission gear element is rotatably supported on at least one stabilizing element about a transmission rotation axis oriented parallel to the rotation axis. Preferably, the at least one transmission gear element is configured, particularly shaped, for transmitting torque from at least one output shaft to the rotating shaft unit. In particular, the at least one transmission gear element is configured as at least one gear, preferably two gears with different radii, said two gears being offset along the rotation axis of the at least one transmission gear element. Preferably, the transmission gear element is disposed on a gear having a larger radius for contacting at least one output shaft. Preferably, the transmission gear element is disposed on a gear having a smaller radius for contacting at least one rotating shaft unit. Preferably, the rotating shaft unit is partially constructed as a gear and partially as a receiving element, and they are particularly immovably connected to each other. Preferably, the rotating shaft unit has at least one, more preferably at least two, and particularly preferably at least four connecting elements, especially locking elements, on the receiving element for connection with at least one rotary cutting tool, and particularly immovably connected to each other.At least one connecting element of the rotating shaft unit is preferably constructed, particularly shaped, for connection with at least one additional recess defined by the rotating body. Preferably, the end of the rotating shaft unit opposite the locking element is constructed as a gear, which has a larger radius than the gear-constructed portion of the rotating shaft unit and / or the transmission gear element. Preferably, the rotating shaft unit is constructed to be rotationally symmetrical about the axis of rotation, particularly including the sharp corners of the gear-constructed portion of the rotating shaft unit. Preferably, the rotating shaft unit is constructed to be mirror-symmetrical with respect to two different mirror surfaces, which are partially separated by the axis of rotation, particularly including the sharp corners of the gear-constructed portion of the rotating shaft unit. The sharp corners of the gear-constructed portion of the rotating shaft unit cannot be constructed to be rotationally symmetrical about the axis of rotation and / or mirror-symmetrical with the two mirror surfaces. An advantageously safe cutting device device can be achieved. In particular, at least one rotary cutting tool can be advantageously positioned away from the user's hand. Supports that advantageously decouple at least one rotary cutting tool and at least one fixed cutting tool in terms of torque technology can be achieved.

[0049] Preferably, the cutting tool device includes a stop unit having at least one stop element configured to prevent at least one rotary cutting tool and at least one fixed cutting tool from falling off and connecting to the transmission unit. Preferably, the stop unit is configured as part of the transmission unit. Preferably, the at least one stop element is configured as a pin element and / or bolt element, particularly with a screw head. Preferably, the stop unit is particularly freely and rotatably supported on the transmission unit, particularly on the rotary shaft unit. Preferably, the stop unit includes at least one, preferably at least two rotary bearing elements, particularly ball bearings, through which the stop unit is rotatably supported on the transmission unit, particularly on the rotary shaft unit. Preferably, at least one rotary cutting tool is particularly freely and rotatably, preferably drivably, supported on a stabilizing element by at least one, preferably at least two rotary bearing elements (particularly ball bearings). Preferably, the stop unit has at least one locking element. The locking element is preferably configured as a locking rotary element, around which the rotary shaft unit is rotatably supported radially outward, particularly around the rotary bearing element, relative to the axis of rotation. Preferably, at least one locking element is arranged, preferably supported, in a rotating shaft unit, particularly radially inward relative to the axis of rotation. Preferably, at least one rotary cutting tool is rotatably supported around at least one locking element (particularly via at least one rotary bearing element). Preferably, at least one stop element passes through at least one fixed cutting tool, through at least one rotary cutting tool, through the rotating shaft unit, through at least one rotary bearing element, through at least one stabilizing element, and / or through at least one locking element (preferably a locking rotary element), preferably along the longitudinal axis of at least one stop element, particularly oriented with the longitudinal axis of at least one stop element parallel to the axis of rotation. Preferably, at least one fixed cutting tool is fixed to at least one locking element in at least two positions in which they are rotated, particularly 90°, relative to each other about the axis of rotation. Preferably, at least one locking element, particularly a locking rotary element, is immovably connected to at least one stabilizing element. Preferably, at least one stop element has at least one groove arranged at its end along the longitudinal axis of at least one stop element. Preferably, the stop unit has at least one retaining element, which is particularly configured to stop at least one stop element on the side of at least one stabilizing element opposite to at least one fixed cutting tool. Preferably, the at least one retaining element is configured as a retaining ring, particularly as a washer. Preferably, at least one retaining element is at least partially, particularly with respect to the axis of rotation, arranged radially in at least one groove, preferably for axially stopping at least one stop element.Preferably, at least one stop element is configured such that a portion of the screw head is disposed on the opposite side of at least one fixed cutting tool, at least one rotary cutting tool, a rotary shaft unit, at least one rotary bearing element, at least one stabilizing element, and / or at least one locking element (preferably a rotary bearing locking element), rather than at least one groove. Preferably, at least one stop element is configured such that a portion of the screw head is disposed on the side of the stabilizing element facing the fixed cutting tool. Preferably, the groove of at least one stop element is disposed on the side of the stabilizing element away from the fixed cutting tool. This allows for an advantageous stop connection between at least one fixed cutting tool and at least one rotary cutting tool, wherein at least one rotary cutting tool can rotate freely, while at least one fixed cutting tool is supported in a manner that restricts rotation.

[0050] Preferably, the stop unit has at least one spring element configured to apply force to at least one stop element along the axis of rotation, particularly for generating pressing force between at least one rotary cutting tool and at least one stationary cutting tool. Preferably, the at least one spring element is configured as a helical spring, configured to generate a compressive force on the at least one spring element. Preferably, at least one spring element is arranged between at least one locking element (particularly at least one locking rotary element) and a retaining element. Preferably, at least one spring element is configured to generate pressing force from at least one stationary cutting tool to at least one rotary cutting tool via at least one stop element. Preferably, at least one spring element is configured to generate pressing force from at least one stationary cutting tool to at least one stabilizing element, particularly a pressing force pointing inward relative to the housing unit. Preferably, at least one spring element is configured to generate a preload force between at least one stationary cutting tool and at least one rotary cutting tool via at least one stop element. Preferably, at least one retaining element is movably supported within the housing unit, particularly relative to at least one stabilizing element, preferably movably along the axis of rotation. An advantageous close arrangement of at least one stationary cutting tool on at least one rotary cutting tool is possible. In particular, a favorable cutting action can be achieved between at least one fixed cutting tool and at least one rotary cutting tool.

[0051] Preferably, at least one stop element is movably supported along the axis of rotation, particularly in a preloaded manner. Preferably, at least one stop element is movably supported on the housing unit, particularly relative to at least one stabilizing element, preferably movably supported along the axis of rotation, particularly partially supported within the housing unit. Preferably, at least one fixed cutting tool is movably supported on the housing unit, particularly relative to at least one stabilizing element, preferably movably supported along the axis of rotation, particularly partially supported within the housing unit. Adjustable preload can be advantageously achieved via at least one spring element. Advantageous manual adjustment of the position of at least one fixed cutting tool is possible.

[0052] Preferably, the stop unit has at least one operating element connected to the fixed cutting tool in a non-rotatable manner relative to the fixed cutting tool. Preferably, the at least one operating element is non-movably connected to the at least one fixed cutting tool. Preferably, the longitudinal axis of the at least one operating element is oriented perpendicular to the axis of rotation. Preferably, the at least one operating element extends at least partially parallel to the axis of rotation. Preferably, the maximum extension of the at least one operating element parallel to the axis of rotation is at most half of the maximum longitudinal extension of the at least one operating element. "Longitudinal extension" should be understood in particular as the extension of the object along, and especially parallel to, the longitudinal axis of the object. Preferably, on at least one outer surface of the operating element, the at least one operating element defines at least one recess, especially a gripping recess, which defines a surface normal oriented perpendicular to the axis of rotation in the middle, and the recess is preferably configured to allow the at least one operating element to grip. Instead of the at least one recess, especially a gripping recess, the at least one operating element can be structurally constructed, for example, with ribs and / or knurling, on at least one outer surface of the operating element, which defines a surface normal oriented perpendicular to the axis of rotation in the middle, especially for allowing the at least one operating element to grip. Preferably, at least one operating element comprises at least two, preferably at least three, plate-like portions, which are preferably integrally constructed with each other. "Integrally" should be understood in particular as being formed as a single part, wherein the single part is preferably made from a single blank, block, and / or casting, particularly preferably by injection molding, especially single-component and / or multi-component injection molding. Preferably, the largest plate-like portion is aligned with the normal to the largest outer surface parallel to the axis of rotation. Preferably, two plate-like portions of equal size are oriented perpendicular to the axis of rotation with the normals to the largest outer surface of their respective portions. Preferably, at least two plate-like portions of the same size are arranged spaced apart from each other on the largest plate-like portion. Preferably, at least two plate-like portions of the same size are arranged spaced apart from the axis of rotation on the largest plate-like portion. Preferably, at least two plate-like portions of the same size are arranged mirror-symmetrically with each other, especially rotationally symmetrically about the axis of rotation, on the largest plate-like portion. Preferably, at least one recess, especially a gripping recess, is arranged on each of the at least two plate-like portions of the operating element, especially on the radially outward side. Preferably, at least one stop element extends through at least one operating element, preferably along the longitudinal axis through the largest plate-like portion of the at least one operating element. At least one of the smaller plate-like portions of the at least one operating element can alternatively be pivotally connected to the largest plate-like portion. This enables advantageously secure gripping of the cutting device, particularly gripping advantageously away from the cutting edge, to adjust the cutting position of at least one fixed cutting tool.

[0053] Preferably, the fixing unit has at least one operating element having a maximum longitudinal extension perpendicular to the axis of rotation, and the operating element extending parallel to the axis of rotation for at least one-quarter of the maximum longitudinal extension. At least one stop element is immovably connected to at least one operating element. Preferably, at least one stop element, at least one fixed cutting tool, at least one rotary cutting tool, rotary shaft unit, output shaft, and / or at least one transmission gear element are constructed of metal. Preferably, at least one operating element is constructed of plastic. Preferably, at least one stop element is connected to at least one operating element inside the screw head. Preferably, at least one operating element has a maximum longitudinal extension perpendicular to the axis of rotation, said maximum longitudinal extension being four times, preferably three times, the maximum extension of at least one operating element parallel to the axis of rotation. Preferably, at least one operating element extends parallel to the axis of rotation for at least one-third, particularly at least two-fifths, of the maximum extension of at least one operating element parallel to the axis of rotation at the point where the maximum extension of at least one operating element parallel to the axis of rotation is parallel to the axis of rotation. Preferably, at least one operating element extends parallel to the axis of rotation for at most half of the maximum extension of at least one operating element at the point where the maximum extension of at least one operating element parallel to the axis of rotation is parallel to the axis of rotation. Preferably, at least one operating element has a maximum longitudinal extension perpendicular to the axis of rotation, said maximum longitudinal extension being at least twice the maximum extension of at least one operating element parallel to the axis of rotation. This enables the user-friendly design of at least one cutting device.

[0054] Preferably, the stop unit has at least one operating element having a maximum longitudinal extension perpendicular to the axis of rotation, which is at least as large as the maximum longitudinal extension perpendicular to the axis of rotation of at least one rotary cutting tool. Preferably, the maximum longitudinal extension of the at least one operating element is exactly as large as the maximum longitudinal extension of the at least one rotary cutting tool. Preferably, the edge of the at least one operating element, particularly one edge, is configured to be curved away from the at least one fixed cutting tool along the longitudinal axis of the at least one operating element. This allows for an advantageously large and therefore securely grippable operating element that can be advantageously connected to the fixed cutting tool in a face-like manner. In particular, for changing the position of the at least one fixed cutting tool, an advantageous force transmission from the at least one operating element to the at least one fixed cutting tool is possible.

[0055] Preferably, the stop unit includes at least one, particularly the aforementioned locking element, especially a locking rotating element, at least one rotating cutting tool rotatably supported around the locking element, and at least one fixed cutting tool capable of being fixed to the locking element in at least two positions that are torsional about each other about a rotation axis. Preferably, at least one locking element is configured as a hollow pin element and / or a hollow bolt element, the hollow pin element and / or hollow bolt element defining a through locking cavity along the longitudinal axis of at least one locking element, preferably having a circular outer contour. Preferably, the locking cavity is configured to receive at least one stop element. Preferably, at least one stop element extends along the longitudinal axis of at least one locking element and completely passes through at least one locking element. Preferably, at least one stop element is arranged in at least one locking element. Preferably, at least one stop element is rotatably supported in at least one locking element. In particular, at least one stop element can be rotatably supported in at least one locking element with a restricted angle of, in particular, a maximum of 130°, preferably a maximum of 90°, for example, by a stop element and / or stop recess of at least one locking element and at least one stop element in the locking cavity. In particular, at least one stop element can be supported in at least one locking element in a manner that allows for unrestricted rotation. In particular, at least one stop element can be rotatably supported in at least one locking element with a restricted angle of, in particular, a maximum of 130°, preferably a maximum of 90°, for example, by at least one stop element, at least one fixed cutting tool, housing unit, fixing unit, in particular at least one stabilizing element and / or a stop element and / or stop recess of at least one locking element. Preferably, at least one fixed cutting tool can be fixed to at least one locking element in at least two positions, in particular positions, preferably grass cutting position and shrub cutting position, in particular hedge cutting position. Preferably, at least one locking element is connected to at least one stabilizing element in a manner that prevents rotation about the rotation axis relative to at least one stabilizing element. Preferably, at least one locking element is immovably connected to at least one stabilizing element. Preferably, at least one locking element has at least two, preferably at least four, protruding elements at its end along the longitudinal axis of the at least one locking element. Preferably, the at least two, preferably at least four protruding elements project parallel to the longitudinal axis of the at least one locking element, particularly along the axis of rotation. Preferably, the at least two, preferably at least four protruding elements define at least two, preferably at least four fixing cavities in the circumferential direction about the axis of rotation at the upper limit of the locking element, the fixing cavities being particularly configured to secure at least one fixed cutting tool to the at least one locking element to prevent rotation about the axis of rotation. Preferably, the at least two, preferably at least four protruding elements are configured to be arranged in a fastening recess of the at least one fixed cutting tool. Preferably, the at least one fastening recess preferably has an outer contour that is at least substantially H-shaped when viewed parallel to the axis of rotation.Alternatively, preferably, at least one fastening recess, viewed parallel to the axis of rotation, can have at least a substantially h-shaped outer contour. At least one locking element can alternatively comprise at least three, five, six, seven, or similar protruding elements. Preferably, at least two, preferably at least four protruding elements are arranged at equal intervals in the circumferential direction, particularly around the axis of rotation. Preferably, at least two, preferably at least four protruding elements project at equal degrees along the axis of rotation. Preferably, at least two, preferably at least four protruding elements have an extension of equal length along the axis of rotation. At least one locking element can have at least one additional protruding element with an extension along the axis of rotation longer than the extensions of the at least two, preferably at least four protruding elements. At least one additional protruding element can provide a stop element for at least one fixed cutting tool, particularly on the fastening recess, for limiting the rotatability of at least one fixed cutting tool, particularly limiting it to a defined maximum angle. For example, at least one fastening recess with an h-shaped outer contour can engage in two different positions on three of the at least four protruding elements. Alternatively, particularly when viewed parallel to the axis of rotation, the fastening recess can have an outer contour that is at least substantially X-shaped. The fastening recess can have any contour that a person skilled in the art would deem reasonable for connection with at least two protruding elements in at least two different locations of at least one fixed cutting tool. This allows for advantageously decoupled support of at least one fixed cutting tool from at least one rotary cutting tool in at least two locations.

[0056] Preferably, the cutting tool device includes a tool interface unit configured for detachable connection with a machine tool, particularly a portable machine tool. Preferably, a fixing unit of the tool interface unit is configured for detachable connection with the portable machine tool. Preferably, the fixing unit is configured on the side of at least one stabilizing element opposite to the transmission unit for detachable connection with the portable machine tool. Preferably, the fixing unit includes a pin element configured to be arranged in an orientation recess of the machine tool when the machine tool is connected to the cutting device, particularly via the tool interface unit. Preferably, at least one pin element has a longitudinal axis parallel to the axis of rotation. Preferably, the fixing unit of the tool interface unit is configured on the tool receiving portion of the machine tool for detachable connection with the portable machine tool. Preferably, the fixing unit of the tool interface unit is configured for detachable connection with the portable machine tool, wherein the output shaft is coupled to the output shaft of the machine tool for torque transmission. Preferably, the cutting device can be detachably connected to a particularly portable machine tool via a tool interface unit, wherein the output shaft rotation axis is the same as the machine output rotation axis. This enables advantageous modularity of the cutting device.

[0057] Preferably, the tool interface unit has, in particular, the aforementioned fixing unit, which includes at least one locking element, especially at least one fixed locking element, for locking connection with the machine tool. In particular, at least one movable locking element of the machine tool engages behind the locking element of the fixing unit. In particular, at least a plurality of movable locking elements are particularly capable of moving together, preferably by means of a common release element on the machine tool side, and these plurality of movable locking elements engage behind a plurality of locking elements of the fixing unit. Preferably, the fixing unit has at least two, preferably at least three, particularly preferably at least four fixed locking elements, which are connected to at least one stabilizing element. Preferably, at least one, preferably all, fixed locking elements are integrally constructed with at least one stabilizing element. Preferably, at least one, preferably all, fixed locking elements are arranged on, in particular, corresponding helical recesses of at least one stabilizing element, wherein the helical recesses are configured to connect at least one stabilizing element and the housing unit. Preferably, at least one stabilizing element is screwed onto the housing unit at a plurality of, in particular at least five, helical recesses. Preferably, the machine tool, particularly the tool receiving unit, has at least one machine locking element, which is specifically configured to connect with at least one locking element. The machine tool, particularly the tool receiving unit, can have machine locking elements corresponding to the number of locking elements in the fixing unit. Preferably, at least one machine locking element is configured to engage behind at least one locking element for a particularly detachable connection between the cutting device and the machine tool. In particular, multiple machine locking elements can be configured to engage behind at least one, preferably a corresponding, locking element for a particularly detachable connection between the cutting device and the machine tool. Preferably, the machine tool includes at least one release element configured to release the connection between at least one machine locking element and at least one locking element. Preferably, at least one release element is configured as a lever element, particularly a bent lever element. Preferably, at least one release element is configured for the common displacement, particularly movement, such as oscillation and / or movement, of at least one, preferably all, machine locking elements. This enables an advantageously stable, preferably immovable, and detachable connection between the cutting device and the machine tool.

[0058] A machine tool, particularly a grass and / or shrub shear, can be conceived having at least one advantageously removable cutting device according to the invention. Preferably, the machine tool is configured as a portable machine tool. Preferably, the portable machine tool is battery-powered. Preferably, the machine tool includes a machine output shaft. Preferably, the machine tool, particularly the tool receiving section, includes an orientation recess. Preferably, the machine tool includes a tool receiving section. Preferably, the tool receiving section is configured to be rotatably coupled with at least one tool device, particularly with at least one rotary cutting tool, particularly with the cutting tool device about a rotation axis. Preferably, especially in the coupled state of the cutting tool device (particularly at least one rotary cutting tool) and the tool receiving section, the rotation axis, particularly the machine output rotation axis, is oriented perpendicularly to the longitudinal axis of the handle unit, with a deviation of at most 15°, preferably at most 10°, and particularly preferably within 5°. Preferably, the machine tool has at least one battery unit. Preferably, the machine tool has at least one machine transmission unit. Preferably, the machine tool includes a motor unit, particularly at least one electric motor. Preferably, the machine tool has a main machine section, particularly a motor unit and / or a machine transmission unit, arranged within said main machine section. This enables advantageous compatibility between the machine tool and the cutting device assembly.

[0059] Preferably, the machine tool includes a housing unit that at least substantially surrounds the machine tool, wherein the cutting device includes, in particular, the aforementioned transmission unit, having, in particular, the aforementioned output shaft, for driving at least one rotary cutting tool, which is oriented parallel to and offset from the rotation axis, wherein the rotation axis does not intersect with the housing unit. Preferably, the housing unit constitutes the outer shell of the machine tool. Preferably, the housing unit is constructed at least substantially of a plastic material. Preferably, the machine output rotation axis is centrally located on the tool receiving section of the machine tool. Preferably, the machine output rotation axis is oriented perpendicular to the longitudinal axis of the machine tool, with a maximum deviation of 30°. Preferably, the machine output rotation axis is spaced at least 1 cm, preferably at least 2 cm, and especially at least 3 cm from the rotation axis. Preferably, the rotation axis is located on the side of the machine output rotation axis away from the battery unit. Alternatively, a rotation axis parallel to the machine output rotation axis can be offset from the machine output rotation axis and has at least one intersection with the housing unit. Machine tools and / or cutting device devices may have a protective cap constructed for inserting into at least one fixed cutting tool.

[0060] A method can be conceived for adjusting the cutting function of the cutting device according to the invention, particularly the grass or shrub trimming function of the cutting device.

[0061] Preferably, in at least one method step, at least one stop element, particularly the aforementioned one, shifts along the axis of rotation against a reaction force, especially against pressing force, and in at least one method step, at least one fixed cutting tool rotates at least 45°, advantageously 90°. Preferably, in at least one method step, an operating element with at least one stop element, especially with at least one fixed cutting tool, moves along the axis of rotation away from at least one rotating cutting tool against the pressing force of at least one spring element. Preferably, in at least one method step, particularly from the grass cutting position to the shrub cutting position or from the shrub cutting position to the grass cutting position, the operating element, particularly together with at least one fixed cutting tool, rotates about the axis of rotation by an angle of at least 45°, advantageously at least 90°. Preferably, in at least one method step, particularly from the grass cutting position to the shrub cutting position or from the shrub cutting position to the grass cutting position, the operating element, particularly together with at least one fixed cutting tool, rotates about the axis of rotation by an angle of at most 130°, advantageously at most 120°. Preferably, in at least one method step, an operating element with at least one stop element, particularly with at least one fixed cutting tool, moves along the axis of rotation toward at least one rotary cutting tool by means of the pressing force of at least one spring element, particularly to a shrub cutting position or a grass cutting position. This enables advantageously rapid, preferably tool-free, cutting device replacement functionality.

[0062] A method for cutting grass and / or shrubs using the cutting device according to the invention is conceivable. Preferably, in at least one method step, a cutting force vector is generated on the material by at least one cutting element through the rotation of at least one rotary cutting tool. This cutting force vector points in a direction, particularly the cutting force direction, that is centered between the tangential direction at the tip of at least one cutting element and the opposite direction of the cutting motion, with a maximum deviation of 15°. The opposite direction of the cutting motion is oriented perpendicular to the axis of rotation with a maximum deviation of 30°, and parallel to the longitudinal axis of at least one fixed cutting tool with a maximum deviation of 45°. Preferably, the opposite direction of the cutting motion is the direction opposite to the direction of movement of the machine tool, particularly the cutting device. The opposite direction particularly refers to a direction oriented at 180° to a reference direction. Preferably, the opposite direction of the cutting motion, particularly the cutting motion direction, is oriented parallel to the longitudinal axis of the fixed cutting tool with a maximum deviation of 30°, preferably a maximum deviation of 15°. Preferably, the opposite direction of the cutting motion, particularly the cutting motion direction, is oriented perpendicular to the axis of rotation of the fixed cutting tool with a maximum deviation of 20°, preferably a maximum deviation of 15°. Preferably, the cutting force direction is radially inward, particularly pointing towards the axis of rotation. Preferably, in at least one method step, at least one cutting element generates a cutting force vector inside the at least one cutting element, particularly at least one sickle-shaped cutting element, through the rotation of at least one rotary cutting tool. This enables an advantageously efficient cutting method, particularly achieving advantageously efficient capture of the material to be cut in the direction of motion.

[0063] Preferably, the machine tool includes a handle unit. Preferably, the handle unit is specifically configured for portable machine tools, particularly for portable grass and / or shrub shears. Particularly preferably, the handle unit is provided, and particularly configured, for ergonomic manual guidance of the machine tool for both right-handed and left-handed users. Preferably, the handle unit includes at least one support element.

[0064] Preferably, the handle unit includes at least one housing. Preferably, the housing is constructed as part of the machine housing unit. Preferably, the housing is integrally constructed with the machine housing unit. Preferably, the housing is at least substantially constructed of a plastic material, particularly the same plastic material as the machine housing unit.

[0065] Preferably, the handle unit's housing has a varied columnar shape for constructing a pistol-grip-style single-handed handle. Preferably, the handle unit connects the battery unit to the main part of the machine, particularly the motor unit of the machine tool, especially an electric motor, arranged within said main part. Preferably, a tool receiver is arranged on the main part of the machine. In particular, the tool receiver preferably forms the outer side of the main machine component. Preferably, a cutting device is constructed for connection to the main machine, particularly by means of the tool receiver. Preferably, the battery unit has a battery interface. Preferably, the battery unit has a housing integrally constructed with the handle unit's housing. Preferably, the boundary between the handle unit and the battery unit is perpendicular to the longitudinal axis of the handle unit. Preferably, the boundary between the handle unit and the battery unit is arranged on the side of the handle unit facing the battery unit. Preferably, the boundary between the handle unit and the battery unit is arranged at a point from which the maximum extension of the handle unit perpendicular to its longitudinal axis is greater than the maximum extension of the handle unit perpendicular to its longitudinal axis at at least one support element, particularly greater than the maximum extension of the handle unit perpendicular to its longitudinal axis that at least partially constitutes at least one support element. Preferably, the boundary between the handle unit and the main part of the machine is located where the trigger switch of the handle unit ends in the direction of the rotation axis. Preferably, the boundary between the handle unit and the main part of the machine is located at a point where, starting from this point, the maximum extension of the handle unit perpendicular to its longitudinal axis is greater than the maximum extension of the handle unit perpendicular to its longitudinal axis at at least one support element, and particularly greater than the maximum extension of the handle unit perpendicular to its longitudinal axis that at least partially constitutes at least one support element.

[0066] Preferably, the handle unit, especially the housing of the handle unit, defines the longitudinal axis of the handle unit along the main extending direction of the handle unit, especially the housing of the handle unit. Preferably, the handle unit, especially the housing of the handle unit, defines a transverse axis of the handle unit along the main extending direction of the handle unit (especially the housing of the handle unit), which is oriented perpendicularly to the longitudinal axis of the handle unit. Preferably, the handle unit has a depth axis perpendicular to the transverse and longitudinal axes of the handle unit. Preferably, the longitudinal axis of the handle unit is parallel to the longitudinal axis of the machine tool, especially to the handle unit, with a maximum deviation of 30°, preferably within 15°. Preferably, the longitudinal axis of the handle unit is parallel to the connection direction of the interchangeable battery of the battery unit, with a maximum deviation of 30°, preferably within 15°. Preferably, the transverse axis of the handle unit is parallel to the longitudinal axis of at least one fixed cutting tool in the bush cutting position, with a maximum deviation of 30°, preferably within 15°. Preferably, the transverse axis of the handle unit is perpendicular to the longitudinal axis of at least one fixed cutting tool in the grass cutting position, with a maximum deviation of 30°, preferably within 15°. Preferably, the longitudinal axis of the handle unit is parallel to the longitudinal axis of at least one fixed cutting tool in the grass cutting position, with a maximum deviation of 30° and preferably within a maximum deviation of 15°. Preferably, the longitudinal axis of the handle unit is perpendicular to the longitudinal axis of at least one fixed cutting tool in the shrub cutting position, with a maximum deviation of 30° and preferably within a maximum deviation of 15°.

[0067] Preferably, the main extension direction of the object is parallel to the longest outer edge of the smallest imaginary cube, which completely encloses the object. Preferably, the handle unit, and especially the handle unit housing, has a longitudinal axis. Preferably, the handle unit, and especially the handle unit housing, has a transverse axis.

[0068] Preferably, the handle unit has two opposing, particularly mirror-symmetrically constructed recesses on the side of the housing facing away from the transverse axis. Preferably, the recesses are arranged on the side of the housing facing away from the transverse axis of the handle unit. Preferably, a corresponding recess is arranged on the side of the housing facing away from the transverse axis of the handle unit. Preferably, at least two recesses are constructed in a mirror-symmetrical manner with respect to a surface perpendicular to the transverse axis of the handle unit. Preferably, at least two recesses are each partially bounded by the housing of the handle unit. Preferably, at least two recesses are each bounded by the handle unit on both sides parallel to the longitudinal axis of the handle unit. Preferably, at least two recesses are partially, preferably on one side, particularly towards the corresponding recess, bound by the handle unit parallel to the transverse axis of the handle unit. Preferably, at least two recesses are at least partially unrestricted along the depth axis of the handle unit on the front side of the handle unit, particularly on the side of the handle unit facing the trigger switch.

[0069] Preferably, at least two digging depths are each confined within an extension parallel to the longitudinal axis of the handle unit, the extension being at least 50%, preferably at least 60%, particularly preferably at least 70%, or alternatively at least 80% of the longitudinal extension of the handle unit.

[0070] Preferably, at least two recessed portions are defined in a curved shape on the side of the handle unit facing the rear, particularly on the side of the handle unit opposite to the trigger switch. In particular, at least two recessed portions are defined in a convex curved shape in the direction of the rear of the handle unit. Specifically, the housing of the handle unit is constructed in a concave curved shape from the front of the handle unit at at least two recesses in the direction of the rear of the handle unit. Preferably, at least two recessed portions are each constructed in a substantially circular, particularly semi-circular, shape when viewed along the transverse axis of the handle unit. Preferably, the front of the handle unit is the side of the handle unit facing the trigger switch.

[0071] Preferably, at least one support element is configured to support the inside of the user's hand, preferably the palm, especially the inner palm and / or the inner wrist, preferably the inner thumb wrist, especially when the machine tool is in operation. Preferably, at least one support element is configured to guide the handle unit through a low gap of the user's inside of the hand, preferably the palm, especially the inner palm and / or the inner wrist, preferably the inner thumb wrist.

[0072] Preferably, at least one support element extends at least partially along the transverse axis. Preferably, at least one support element has a longitudinal axis oriented parallel to the transverse axis of the handle unit. Preferably, the longitudinal axis of at least one support element is oriented at least substantially perpendicular to the axis of rotation. Preferably, the longitudinal axis of at least one support element is oriented at least substantially perpendicular to the longitudinal axis of the handle unit. Preferably, the longitudinal axis of at least one support element is oriented at least substantially perpendicular to the depth axis of the handle unit.

[0073] Preferably, at least one support element extends along the longitudinal axis of the at least one support element through the handle unit, particularly through the housing of the handle unit, along the transverse axis of the handle unit in at least one state, preferably in all states. Preferably, when viewed along the transverse axis of the handle unit, at least one support element has a curved I-shaped and / or kidney-shaped outer contour.

[0074] Preferably, at least one support element has a maximum extension parallel to the longitudinal axis of the handle unit, which is at least 20%, preferably at least 25%, particularly preferably at least 30%, and completely particularly preferably at least 33% of the maximum extension of at least two digging depths parallel to the longitudinal axis of the handle unit. Preferably, at least one support element has a maximum extension parallel to the longitudinal axis of the handle unit, which is at most 80%, preferably at most 70%, particularly preferably at most 60%, and completely particularly preferably at most 50% of the maximum extension of at least two digging depths parallel to the longitudinal axis of the handle unit.

[0075] Preferably, at least one support element can be selectively, and especially at least partially, arranged in at least one of the at least two excavation sections. Preferably, in each state of the at least one support element, the at least one support element is at least partially arranged in at least one of the at least two excavation sections. In particular, in at least one state of the at least one support element, the at least one support element is at least partially arranged in exactly one of the at least two excavation sections. A handle unit can be implemented that is advantageously ergonomically designed for both right-handed and left-handed users.

[0076] Furthermore, it is proposed that at least one support element is supported in the handle unit in a manner movable along the horizontal axis, particularly in a manner capable of translational movement, and is particularly configured to be able to lock and / or fix in at least two positions, particularly the end position. This allows the support element to be advantageously adjusted to a right-handed user position and a left-handed user position. Preferably, at least one support element is supported in the housing of the handle unit in a manner movable along the horizontal axis. More preferably, at least one support element is configured to be able to lock and / or fix in at least two positions (particularly the end position) in particular the housing of the handle unit, particularly with respect to movement along the horizontal axis of the handle unit. Preferably, the end position is the corresponding position of the at least one support element in which, particularly depending on the support of the at least one support element, movement along the horizontal axis of the handle unit is only possible in one direction. Preferably, the handle unit has a bearing unit for the translationally movable support of at least one support element on the housing of the handle unit. In particular, the bearing unit is configured such that at least one support element is configured to be locked and / or fixed in at least two positions, particularly end positions, relative to movement along the transverse axis of the handle unit. Preferably, the bearing unit has at least one bearing rail on which at least one support element is supported. In particular, the bearing unit can include locking and / or fixing units having, for example, at least two locking elements, particularly locking recesses, on the rail element and at least one locking element, particularly locking recess, on at least one support element, for locking or fixing at least one support element to at least two different positions on at least one bearing rail. The locking and / or fixing units can include at least one magnetic locking element and / or magnetic stop element. The locking and / or fixing units can include at least one locking and / or fixing element for form-locking with another locking and / or fixing element. Preferably, at least one locking and / or fixing element is arranged on at least one support element. Preferably, at least one locking and / or fixing element is arranged on at least one bearing rail. Preferably, the end positions are corresponding positions of at least one support element, in which the at least one support element is partially arranged in exactly one of at least two digging sections. Preferably, the end positions are corresponding positions of at least one support element, in which the at least one support element is partially arranged in exactly one of at least two digging sections and partially arranged within the housing of the handle unit. Preferably, the two end positions correspond respectively to the right-handed user position or the left-handed user position of the at least one support element. This enables advantageous adjustability of the handle unit for use with either the right or left hand.

[0077] Preferably, at least one support element is at least partially elastically deformable. Particularly preferably, at least one support element is at least partially, preferably at least externally, constructed of an elastomeric material that forms the structured surface of the support element.

[0078] Furthermore, it is proposed that at least one support element is constructed at least partially arched, particularly inwardly arched, on at least one end face. This enables advantageous gripping of the at least one support element. Preferably, the at least one support element has two end faces arranged opposite to each other along the transverse axis of the handle unit. Preferably, the two end faces of the at least one support element are at least partially arched, arranged opposite to each other along the transverse axis of the handle unit. The at least two end faces can be constructed at least partially, preferably completely, particularly at least at least flat in the middle. Preferably, the at least one support element is constructed at least partially contoured, particularly at least on one, preferably on both end faces. The at least two end faces can be at least partially structured, for example, with ribs and / or knurling. This enables advantageous gripping of the handle unit. In particular, advantageous safe operation of the handle unit can be achieved in both the right-handed and left-handed user positions of the at least one support element. In particular, better contact between the at least one support element and the inner surface of the hand can be achieved.

[0079] Furthermore, it is proposed that at least one support element has a maximum longitudinal extension along the transverse axis of the handle unit, which is a maximum of 125% of the maximum lateral extension of the housing along the transverse axis of the handle unit. This enables an advantageously compact handle unit. Preferably, at least one support element has a longitudinal extension oriented parallel to the transverse axis of the handle unit. Preferably, at least one support element has a maximum extension parallel to the transverse axis of the handle unit, which is a maximum of 120%, preferably a maximum of 110%, of the maximum extension of the handle unit housing parallel to the transverse axis of the handle unit. Movement of at least one support element can advantageously limit the minimum value between right-handed and left-handed user positions. In particular, this enables an advantageously durable handle unit.

[0080] Furthermore, it is proposed that at least one support element has a maximum longitudinal extension along the transverse axis of the handle unit, which is at least 0.6 times the maximum lateral extension of the housing along the transverse axis of the handle unit. This enables the support element to provide advantageous and stable support. Preferably, at least one support element has a maximum extension parallel to the transverse axis of the handle unit, which is at least 70%, preferably at least 80%, particularly preferably at least 90%, and completely particularly preferably at least 99% of the maximum extension of the housing of the handle unit parallel to the transverse axis of the handle unit. This enables advantageous and uncomplicated adjustability of at least one support element between a right-handed user position and a left-handed user position.

[0081] Furthermore, it is proposed that, viewed perpendicularly to the projection plane, at the end position of at least one support element, at least 75% of the projected shadow of at least one support element within the projection plane spanned by the longitudinal and transverse axes is arranged within the projected shadow of the housing (especially the handle unit) within the projection plane. This enables the support element to be advantageously hidden and / or protected. Preferably, viewed perpendicularly to the projection plane, at one of the two end positions of at least one support element, at least 80%, particularly preferably at least 85%, and completely, particularly preferably at least 90%, of the projected shadow of at least one support element within the projection plane spanned by the longitudinal and transverse axes is arranged within the projected shadow of the housing of the handle unit. Viewed perpendicularly to the projection plane, at one of the two end positions of at least one support element, the projected shadow of at least one support element within the projection plane spanned by the longitudinal and transverse axes can be completely arranged within the projected shadow of the housing of the handle unit within the projection plane. This enables the housing of the handle unit and the support element at the end positions of the support element to achieve an advantageously ergonomically grippable whole.

[0082] Furthermore, it is proposed that at least one support element is configured differently from the release element and / or the rotation direction selection option of the machine tool. This enables advantageous separation of the control function from the ergonomic components of the handle unit. Preferably, the machine tool, particularly on the handle unit, has at least one release element, particularly the release element coupled to the machine tool's motor unit and / or machine transmission unit, preferably for locking and releasing the rotation function of the motor unit. Alternatively or additionally, the handle unit may have at least one, particularly the release element. Preferably, at least one support element is configured differently from at least one release element. Preferably, at least one support element is arranged spaced apart from at least one release element. Preferably, at least one release element is arranged with a trigger switch at a maximum distance of 5 cm, preferably a maximum of 3 cm, particularly preferably a maximum of 2 cm. Preferably, the machine tool, particularly on the handle unit, has at least one, particularly the rotation direction selection element, particularly coupled to the machine tool's motor unit and / or machine transmission unit, preferably for changing the rotation direction of the tool about a rotation axis, preferably for changing the rotation direction of at least one rotating tool device about a rotation axis. Alternatively or additionally, the handle unit may have at least one, particularly the aforementioned rotation direction selection element. Preferably, at least one support element is constructed differently from at least one rotation direction selection element. Preferably, at least one support element is arranged spaced apart from at least one rotation direction selection element. Preferably, at least one rotation direction selection element is arranged with a maximum spacing of 5 cm, preferably a maximum of 3 cm, and particularly preferably a maximum of 2 cm from the trigger switch. Preferably, the machine tool, particularly the handle unit, has at least one operating element, particularly at least one release element, and at least one rotation direction selection element, said operating element being coupled, particularly to the machine tool's motor unit and / or machine transmission unit, preferably for changing the rotation direction of the tool about a rotation axis, preferably for changing the rotation direction of at least one rotating tool device about a rotation axis, and for locking and releasing the rotation function of the motor unit. Alternatively or additionally, the handle unit may have at least one, particularly the aforementioned at least one operating element, particularly at least one rotation direction operating element. Preferably, at least one support element is constructed differently from at least one operating element, particularly at least one rotation direction operating element. Preferably, at least one support element is arranged spaced apart from at least one operating element, particularly at least one rotation direction operating element. Preferably, at least one operating element, particularly at least one rotation direction operating element, and the trigger switch are arranged with a maximum spacing of 5 cm, preferably a maximum of 3 cm, and especially preferably a maximum of 2 cm. This enables advantageously ergonomic machine tool gripping, thereby ensuring that the support element does not affect the motor function of the machine tool.

[0083] Furthermore, it is proposed that the handle unit has a trigger switch for starting the machine tool, wherein, viewed along the transverse axis, the housing has a convexly curved outer contour at least in the central region on the side opposite to the trigger switch. This enables an advantageous and comfortable grip on the handle unit. Preferably, the handle unit has the trigger switch described above for starting the machine tool. In particular, the trigger switch can be configured to change the speed of the electric motor of the motor unit. Preferably, the trigger switch is configured to be operated by the index finger. Preferably, the trigger switch of the handle unit is arranged on the outer side of the end of the handle unit along the depth axis of the handle unit, especially on the assumed end side of the handle unit facing the depth axis. Preferably, viewed along the transverse axis, the housing (especially the handle unit) has a convexly curved outer contour at least in the middle region (especially at least 50% of the middle, preferably at least 75% of the middle), especially on the side away from the trigger switch, and especially on the rear side. This enables an advantageously ergonomic grip on the handle unit.

[0084] Furthermore, it is proposed that the handle unit has a trigger switch for starting the machine tool, wherein, viewed along the horizontal axis, the housing has a convexly curved outer contour in the central region of the side facing the trigger switch. Preferably, viewed along the horizontal axis, the housing has a convexly curved outer contour at least in the middle region (especially at least 25% of the middle, preferably at least 40% of the middle), especially on the side facing the trigger switch, and especially on the front. Preferably, viewed along the horizontal axis, the housing has an M-shaped and / or W-shaped curved outer contour on the side facing the trigger switch, especially on the front. This enables an advantageously ergonomic grip of the handle unit.

[0085] Furthermore, it is proposed that the handle unit has a trigger switch for starting the machine tool, wherein the housing of the handle unit has a back grip element in a central region on the side opposite to the trigger switch, the back grip element being configured to be at least partially elastically deformable. This advantageously reduces the risk of slipping on the handle unit. Preferably, the housing of the handle unit has a back grip element in a central region on the side opposite to the trigger switch, the back grip element being at least partially configured to be elastically deformable. Preferably, the handle unit is at least partially constructed of an elastomeric material at the rear side of the handle unit, especially at the housing of the handle unit, particularly the same elastomeric material as at least one support element, preferably to reduce the risk of slipping on the handle unit. Preferably, the back handle element is arranged at the rear side of the handle unit, particularly as part of the housing. Preferably, the back handle element is constructed of an elastomeric material, particularly the same elastomeric material as at least one support element. This enables an advantageously anti-slip handle unit.

[0086] Furthermore, a machine tool, particularly a portable machine tool, especially a grass and / or shrub shear, is proposed, equipped with a handle unit according to the invention. This enables advantageous compatibility of the handle unit with specific guidance of the machine tool.

[0087] The proposed machine tool includes a tool receiving section, particularly the aforementioned tool receiving section, for rotatably coupling with at least one tooling device about a rotational axis, particularly about the machine tool's output rotational axis, wherein the rotational axis is oriented perpendicularly to the longitudinal axis of the housing, with a maximum deviation of 15°. Advantageously, this enables simple control of the machine tool.

[0088] The proposed machine tool includes, in particular, the aforementioned cutting device unit, having at least one rotary cutting tool, particularly a cutting blade, supported and driven about a rotation axis in a fully rotatable manner. The rotary cutting tool includes at least one cutting element, and the cutting device unit also has at least one fixed cutting tool, particularly a corresponding cutting blade. The at least one rotary cutting tool has at least three cutting elements, and viewed parallel to the rotation axis, in each rotation angle of the at least one rotary cutting tool about the rotation axis, the at least one rotary cutting tool, together with the fixed cutting tool, completely defines at least one through-hole at at least two of the at least three cutting elements. This enables advantageous torque transmission to the cut material.

[0089] The proposed machine tool includes, in particular, the aforementioned cutting device unit, having at least one rotary cutting tool, particularly a cutting blade, supported and driven rotatably about a rotation axis. The rotary cutting tool includes at least one cutting element. The cutting device unit also has at least one fixed cutting tool, particularly a corresponding cutting blade, which is supported in a rotatable manner about the rotation axis and configured to be fixed in at least two different positions around the rotation axis. This allows for an advantageous two-in-one tool configuration. In particular, the grass-cutting function can be advantageously combined with the shrub-cutting function.

[0090] Furthermore, a machine tool system is proposed, comprising at least one tooling device, particularly a cutting device according to the invention, especially having at least one rotary cutting tool, and a machine tool according to the invention. The tooling device can be configured as a cutting device, cutting disc, sawing disc, drill bit, saw blade, grinding disc, grinding disc, or similar. Advantageous compatibility of individual components can be achieved.

[0091] The handle unit, machine tool, and / or machine tool system according to the invention should not be limited to the applications and embodiments described above. In particular, the handle unit, machine tool, and / or machine tool system according to the invention can have a different number of individual elements, components, and units, and especially method steps, than those mentioned herein, to fulfill the functions described herein. Furthermore, values ​​within the numerical ranges indicated in this application, falling within the mentioned limits, are also considered disclosed and applicable to arbitrary use. Attached Figure Description

[0092] Other advantages will become apparent from the following description of the accompanying drawings, which illustrate embodiments of the invention. The drawings, description, and claims contain a combination of multiple features. Those skilled in the art can also practically consider these features individually and combine them into other meaningful combinations.

[0093] It shows:

[0094] Figure 1 The machine tool system according to the invention includes tooling devices, particularly cutting tooling devices according to the invention, and a schematic diagram of the machine tool according to the invention.

[0095] Figure 2 A schematic cross-sectional view of the cutting device according to the present invention along plane AA.

[0096] Figure 3 A partial schematic diagram of the cutting device according to the present invention.

[0097] Figure 4 A schematic diagram of the fixed cutting tool of the cutting device unit of the cutting device apparatus according to the present invention.

[0098] Figure 5 A schematic diagram of the rotary cutting tool of the cutting device unit of the cutting device apparatus according to the present invention.

[0099] Figure 6 A schematic diagram of the cutting device unit of the cutting device apparatus according to the present invention.

[0100] Figure 7 A schematic diagram of the cutting device unit of the cutting device apparatus according to the present invention.

[0101] Figure 8 A schematic diagram of the cutting device unit of the cutting device apparatus according to the present invention.

[0102] Figure 9 A schematic diagram of the method.

[0103] Figure 10 A diagram illustrating another method.

[0104] Figure 11 A schematic diagram of a machine tool system according to the present invention, a cutting device apparatus according to the present invention, and a machine tool according to the present invention.

[0105] Figure 12 A schematic diagram of a machine tool system according to the present invention, a cutting device apparatus according to the present invention, and a machine tool according to the present invention.

[0106] Figure 13 A schematic diagram of the handle unit of the machine tool according to the present invention.

[0107] Figure 14 A schematic diagram of a machine tool system according to the present invention, a cutting device apparatus according to the present invention, and a machine tool according to the present invention.

[0108] Figure 15 A schematic cross-sectional view of the handle unit of the machine tool according to the present invention along a plane perpendicular to the longitudinal axis of the handle unit.

[0109] Figure 16 A schematic cross-sectional view of the handle unit of the machine tool according to the invention along a plane perpendicular to the longitudinal axis of the handle unit, and

[0110] Figure 17 A schematic cross-sectional view of the handle unit of the machine tool according to the present invention along a plane perpendicular to the longitudinal axis of the handle unit. Detailed Implementation

[0111] Figure 1 A machine tool system 700 is shown.

[0112] The machine tool system 700 includes a tool device 702. The tool device 702 is particularly configured as a cutting device 10. The machine tool system 700 also includes a machine tool 500. The machine tool 500 is configured as a grass and shrub shear. The cutting device 10 can be attached to either the machine tool 500 or the machine tool system 700. In particular, the cutting device 10 is detachably connected to the machine tool 500, especially in a non-destructive manner.

[0113] The machine tool 500 is configured as a portable machine tool. It is a handheld machine tool. Specifically, it is a portable handheld machine tool designed for single-handed operation, and has a maximum weight of 700g, particularly when decoupled from the cutting device 10. The portable machine tool 500 is battery-powered.

[0114] The machine tool 500 includes a machine output axis. The machine tool 500 includes a tool receiving section 504. The machine tool 500 includes an orientation recess (not shown). The machine tool 500 includes a tool receiving section 504. The tool receiving section 504 is configured to couple with the tool device 702, particularly with the cutting device device 10, in a manner rotatable about the rotation axis 12. The machine tool 500 includes a handle unit 506. The machine tool 500 includes a battery unit 508. The machine tool 500 includes a machine transmission unit (not shown). The machine tool 500 includes a motor unit (not shown), particularly an electric motor. In particular, the motor unit is composed of an electric motor. The machine tool 500 has a main machine part 512, in particular the motor unit and the machine transmission unit are arranged in this main machine part. In particular, when the cutting device device 10 is coupled with the tool receiving section 504, the rotation axis 12, particularly the machine output rotation axis 502, is perpendicularly oriented to the longitudinal axis 510 of the handle unit 506, with a maximum deviation of 15°.

[0115] Machine tool 500 has a machine housing unit 514. The machine housing unit 514 at least partially surrounds machine tool 500. In particular, the machine housing unit 514 externally encloses machine tool 500. The machine housing unit 514 constitutes the outer shell of machine tool 500. The machine housing unit 514 is constructed of plastic material.

[0116] The machine output rotation axis 502 is centrally located on the tool receiving section 504 of the machine tool 500. The machine output rotation axis 502 is oriented perpendicular to the longitudinal axis 516 of the machine tool 500, with a maximum deviation of 20°. The machine output rotation axis 502 is spaced at least 2 cm from the rotation axis 12. The rotation axis 12 is located on the side of the machine output rotation axis 502 opposite to the battery unit 508.

[0117] The cutting device 10 is configured as a grass and shrub cutting device. The cutting device 10 is configured for use in a machine tool 500.

[0118] The cutting device apparatus 10 includes a cutting device unit 14. The cutting device unit 14 includes a rotary cutting tool 16. The rotary cutting tool 16 is supported in a manner that allows it to fully rotate about a rotation axis 12. The rotary cutting tool 16 can be driven to fully rotate about the rotation axis 12. The rotary cutting tool 16 is configured as a cutting blade. The rotary cutting tool 16 includes three cutting elements 18, 18', and 18''. The cutting device unit 14 includes exactly one fixed cutting tool 20. The cutting device unit 14 has exactly one rotary cutting tool 16.

[0119] The cutting device unit 14 includes a fixed cutting tool 20. The fixed cutting tool 20 is configured to correspond to a cutting disc. The fixed cutting tool 20, and especially the corresponding cutting disc, is rotatably supported about a rotation axis 12. The fixed cutting tool 20, and especially the corresponding cutting disc, is configured to be fixed in two different positions that the fixed cutting tool 20 can rotate about the rotation axis 12.

[0120] The cutting device 10 is a sub-component of the machine tool 500 that can be separated from the machine tool 500 as a whole, like the tool device 702. Especially when coupled to the machine tool 500 (see reference...). Figure 1 Specifically, based on the arrangement of the cutting device 10, and particularly based on the position in which the fixed cutting tool 20 is fixed, the cutting device 10 is constructed as part of the machine tool 500 for use as grass and / or shrub shears. Specifically, based on the cutting direction of the cutting device 10 relative to the longitudinal axis 516 of the machine tool 500, the cutting device 10 is constructed as part of the machine tool 500 for use as grass and / or shrub shears. The cutting device 10 is coupled to the machine tool 500 for use as grass and / or shrub shears.

[0121] The cutting device 10 has a tool interface unit 22 (see reference). Figure 2 The tool interface unit 22 is configured for particularly detachable connection with the portable machine tool 500.

[0122] In particular, the tool interface unit 22 is configured to connect, and in particular detachably connect, the cutting device unit 14, and especially the entire cutting device assembly 10, to the machine tool 500. The tool interface unit 22 has a housing unit 24.

[0123] The tool interface unit 22 has a fixing unit 26. The fixing unit 26 includes a stabilizing element 28. The stabilizing element 28 is constructed of metal. The stabilizing element 28 is completely disposed within the housing unit 24. The housing unit 24 is mostly constructed of plastic material. The stabilizing element 28 is fixedly connected to the housing unit 24, and in particular, partially screwed on.

[0124] The tool interface unit 22 has a transmission unit 30. A fixing unit 26, and particularly a stabilizing element 28, are configured to provide a particularly movable, particularly rotatable support for the transmission unit 30. The transmission unit 30 is movably supported, and particularly rotatably supported, and connected to the fixing unit 26, and particularly the stabilizing element 28.

[0125] The fixed cutting tool 20 can be connected to the fixed unit 26 immovably relative to the stabilizing element 28, and in particular, can be fixed in one position. The fixed cutting tool 20 can be fixed immovably to the fixed unit 26 relative to the stabilizing element 28 in two positions.

[0126] The fixed cutting tool 20 is configured to be fixed at two different positions, particularly relative to the stabilizing element 28 and particularly relative to the housing unit 24, where the fixed cutting tool 20 can rotate about the rotation axis 12. The fixed cutting tool 20 is configured to be fixed for rotation about the rotation axis 12, particularly to the stabilizing element 28 and particularly to the transmission unit 30. The fixed cutting tool 20 is configured to be fixed at two different positions, particularly relative to the stabilizing element 28 and particularly relative to the housing unit 24, where the fixed cutting tool 20 can rotate a maximum of 90° about the rotation axis 12.

[0127] In particular, two distinct positions, especially the positions described below, correspond to the grass cutting position (not shown) and the shrub cutting position 32, and especially the hedge cutting position 34 (see reference). Figure 1 In the aforementioned position, the fixed cutting tool 20 is configured to be fixed, particularly relative to the stabilizing element 28 and particularly relative to the housing unit 24, when the fixed cutting tool 20 is rotated a maximum of 90° around the rotation axis 12.

[0128] In particular, the grass cutting position corresponds to a position of the fixed cutting tool 20, especially the position in which the longitudinal axis 36 of the fixed cutting tool 20 is oriented at least substantially parallel to the longitudinal axis 516 of the machine tool 500.

[0129] In particular, the shrub cutting position 32, and especially the hedge cutting position 34, correspond to a position of the fixed cutting tool 20, and especially the position in which the longitudinal axis 36 of the fixed cutting tool 20 is oriented at least substantially perpendicular to the longitudinal axis 516 of the machine tool 500.

[0130] The fixed cutting tool 20 is connected to the transmission unit 30 in a manner that prevents it from rotating relative to the stabilizing element 28. The transmission unit 30 has a rotating shaft unit 38. The rotating shaft unit 38 is not constructed to drive the fixed cutting tool 20.

[0131] The fixed cutting tool 20 is connected to the transmission unit 30 in a manner decoupled from the rotating shaft unit 38, particularly to prevent the transmission of torque from the rotating shaft unit 38 to the fixed cutting tool 20. The fixed cutting tool 20 is connected to the transmission unit 30 in a manner that allows for particularly restricted torsion relative to the rotating shaft unit 38 (see reference). Figure 3 ).

[0132] The fixed cutting tool 20 is connected to the transmission unit 30 in a manner that allows for limited movement relative to the rotating shaft unit 38, particularly rotation by a maximum rotation angle. In the non-moving state of the rotating shaft unit 38, the fixed cutting tool 20 is connected to the transmission unit 30 and can rotate a maximum of 90° around the rotation axis 12 relative to the rotating shaft unit 38. The fixed cutting tool 20 can be fixedly, particularly immovably, connected to the machine tool 500.

[0133] The rotary shaft unit 38 is configured to drive the rotary cutting tool 16. The rotary shaft unit 38 is fixedly connected to the rotary cutting tool 16 and is used to drive the rotary cutting tool 16. The rotary cutting tool 16 is movably, especially fully rotatable, and especially infinitely rotatable in one direction of rotation, connected relative to the stabilizing element 28 and the fixed unit 26.

[0134] The rotary cutting tool 16 is fixedly connected to the rotary axis unit 38 relative to the rotary axis unit 38. The rotary axis unit 38 is movably connected to the fixed unit 26, especially fully rotatable, especially infinitely rotatable in one rotational direction, and is particularly supported on the fixed unit 26. The rotary axis unit 38 is movably connected to the stabilizing element 28, especially fully rotatable, especially infinitely rotatable in one rotational direction, and is particularly supported on the stabilizing element 28.

[0135] The cutting tool device 10 has, in particular, a transmission unit 30 indirectly via the tool interface unit 22. The transmission unit 30 has an output shaft 40 for driving the rotary cutting tool 16. The output shaft 40 is oriented parallel to the rotation axis 12. The output shaft 40 is arranged offset from the rotation axis 12. The rotation axis 12 does not intersect with the machine housing unit 514 (see reference). Figure 1 The machine tool 500 or cutting device 10 has a protective cap 518 (see reference). Figure 1 The protective cap 518 is designed to form an insert and snap-fit ​​connection with the fixed cutting tool 20.

[0136] Viewed particularly parallel to the axis of rotation 12, the fixed cutting tool 20 has ten tips 42 arranged opposite to each other (particularly in pairs opposite to each other), protruding radially, particularly relative to the axis of rotation 12. All ten tips 42 are arranged on an imaginary ellipse 44 that is substantially different from a circle (see reference). Figure 4 Especially when viewed parallel to the axis of rotation 12, the center point of ellipse 44 is located on the axis of rotation 12.

[0137] Viewed specifically parallel to the axis of rotation 12, the two tips 42 are arranged opposite each other, facing away from the imaginary fixing plane 46 of the fixed cutting tool 20. The fixing plane 46 is oriented perpendicular to the longitudinal axis 36 of the fixed cutting tool 20, and particularly perpendicular to the connecting axis 48 of the opposing central tips 42. In particular, the longitudinal axis 36 of the fixed cutting tool 20 can be arbitrarily oriented by changing the shape of the fixed cutting tool 20, so that the connecting axis 48 can also be regarded as a reference axis instead of the longitudinal axis 36 of the fixed cutting tool 20.

[0138] Viewed particularly parallel to the axis of rotation 12, all the tips 42 are arranged in pairs, facing away from the ground and particularly opposite to the fixing device plane 46 of the fixed cutting tool 20. Viewed particularly parallel to the axis of rotation 12, the corresponding five tips 42 are arranged on one side of the fixing device plane 46 of the fixed cutting tool 20.

[0139] Viewed particularly parallel to the axis of rotation 12, the fixed cutting tool 20 has eight capture tips 50 arranged particularly partially away from each other and projecting in the circumferential direction relative to the axis of rotation 12. All capture tips 50 project in the same circumferential direction around the axis of rotation 12. Accordingly, the next capture tip 50 directly adjacent to the next capture tip 50 is arranged away from the capture tip 50 in the circumferential direction of its projection (from which the next capture tip 50 is viewed), particularly on each side of the fixed device plane 46 as envisioned.

[0140] All the capturing tips 50 are arranged on an imaginary fixed circle 52. Specifically, viewed parallel to the axis of rotation 12, the center point of the fixed circle 52 is located on the axis of rotation 12. The radius of the fixed circle 52 is smaller than the major axis 54 of the ellipse 44. The radius of the fixed circle 52 is less than half the major axis 54 of the ellipse 44.

[0141] The rotary cutting tool 16 has three cutting elements 18, 18', 18" (see reference). Figure 5 The rotary cutting tool 16 has three tips 58. Especially when viewed along the axis of rotation 12, the three tips 58 are prominent in the circumferential direction, particularly relative to the axis of rotation 12.

[0142] The rotary cutting tool 16 has a tip 58 on each cutting element 18, 18', 18" respectively. In particular, the three tips 58 of the rotary cutting tool 16 are arranged on an imaginary rotation circle 60. In particular, when viewed parallel to the rotation axis 12, the center point of the rotation circle 60 is arranged on the rotation axis 12.

[0143] The capturing tip 50 protrudes in the opposite circumferential direction relative to the tip 58 of the rotary cutting tool 16 (see reference). Figure 6 , Figure 7 The rotating circle 60 is spaced apart from the ellipse 44, particularly radially inwardly, by at least 20% of the radius of the rotating circle 60. The rotating circle 60 is completely arranged within the ellipse 44. In particular, the imaginary fixed circle 52 and the imaginary rotating circle 60 have the same radius, with a deviation of no more than 10% of the larger radius.

[0144] In particular, the size of the rotating circle 60 is the same as that of the fixed circle 52. The radius, and especially the diameter, of the rotating circle 60 are the same as those of the fixed circle 52.

[0145] The three cutting elements 18, 18', and 18" are constructed in the same shape, and especially in the same size. The three cutting elements 18, 18', and 18" are arranged at equal intervals. The cutting elements 18, 18', and 18" are constructed in a sickle shape.

[0146] The rotary cutting tool 16 and the fixed cutting tool 20 grind in opposite directions in the circumferential direction, especially for cutting preferred grass stems, branches, shrub branches or the like.

[0147] The cutting edges 62, 62', 62" of the sickle-shaped cutting elements 18, 18', 18" are ground. Specifically, the cutting edges 62, 62', 62" of each cutting element 18, 18', 18" are the outer edges facing the axis of rotation 12 of the corresponding cutting element 18, 18', 18". The fixed cutting edge 64 of the fixed cutting tool 20 (in...) Figure 4 The reference symbol is marked once. Figure 14 The structure is ground down.

[0148] The cutting blades 62, 62', 62" of the sickle-shaped cutting elements 18, 18', 18" are shaped to generate a cutting force vector 70 (see reference) when in contact with the material 182 being cut, such as grass stems, shrub branches, or similar materials. Figure 11 The cutting force vector is centered between the tangential direction 72 of the tip 58 of the rotating cutting tool 16 on the corresponding cutting elements 18, 18', 18" and the opposite direction 74 of the cutting motion of the fixed cutting tool 20, with a maximum deviation of 15°. In particular, the opposite direction of the cutting motion 74 is oriented parallel to the connecting axis 48, with a maximum deviation of 15°. The opposite direction of the cutting motion 74 is always oriented towards the rotation axis 12. The opposite direction of the cutting motion 74 of the fixed cutting tool 20 is oriented parallel to the longitudinal axis 36 of the fixed cutting tool 20, with a maximum deviation of 30°. The opposite direction of the cutting motion 74 of the fixed cutting tool 20 is oriented perpendicular to the rotation axis 12, with a maximum deviation of 30°.

[0149] Cutting elements 18, 18', and 18" are respectively constructed for, and especially specifically shaped for, generating a cutting force vector 70 on the corresponding cutting edges 62, 62', and 62" respectively. The cutting force vector 70 is directed in a direction that is centrally oriented between the tangential direction 72 at the tip 58 on the corresponding cutting element 18, 18', and 18" and the opposite direction 74 of the cutting motion of the fixed cutting tool 20, with a maximum deviation of 15°.

[0150] The fixed cutting tool 20 is partially constructed as a hollow cylindrical disk, viewed parallel to the rotation axis 12. The hollow cylindrical disk extends in a closed manner in terms of material between a defined fixed inner radius 76 and a defined fixed outer radius 78 (see reference). Figure 4The fixed cutting tool 20 has a fixed cutting body 68, which is constructed as a hollow cylindrical disk. Viewed parallel to the rotation axis 12, the hollow cylindrical disk extends in a closed manner in terms of material between a defined imaginary fixed inner radius 76 and a defined imaginary fixed outer radius 78. Viewed parallel to the rotation axis 12, the fixed cutting body 68 completely defines exactly one recess, specifically a fastening recess 80. The fastening recess 80 is located in... Figure 4 The image is schematically and, for the purpose of rough illustration, exemplarily shown circularly. Viewed parallel to the axis of rotation 12, the fastening recess 80 is arranged at the geometric center of the fixed cutting tool 20. The imaginary fixed outer radius 78 is smaller than the radius of the rotation circle 60 and / or the fixed circle 52, particularly at least 20% smaller relative to the larger radius.

[0151] The fixed cutting tool 20 has ten radially protruding elements 82. Viewed particularly parallel to the axis of rotation 12, the fixed cutting tool 20 includes ten radially protruding elements 82 that are partially opposite to each other, particularly arranged in pairs opposite to each other, and protruding in the radial direction, particularly relative to the axis of rotation 12. Five of the radially protruding elements 82 are arranged on one side of the fixing device plane 46.

[0152] Viewed in particular parallel to the axis of rotation 12, the radial protrusions 82 partially define the cutting openings 84 between the defined fixed outer radius 78 of the fixed cutting tool 20 and the tips 42 and / or the capture tips 50 constructed on the corresponding radial protrusions 82, the cutting openings 84 being constructed in an unrestricted manner by the fixed cutting tool 20, particularly at the radial ends of the cutting openings 84.

[0153] Radial protrusions 82 extend radially from the fixed cutting body 68, particularly from the imaginary fixed outer radius 78, to the tip 42 of the fixed cutting tool 20, particularly to the imaginary ellipse 44. The fixed cutting tool 20 consists of the fixed cutting body 68 and ten radial protrusions 82. Relative to the fixing device plane 46, the four outer radial protrusions 82 are imaginarily divided into four radial protrusions 82 by the fixing device plane 46.

[0154] In particular, two, especially adjacent, radial protrusions 82 are arranged with a distance of at least 8 mm between them. The minimum spacing 86 between two of the radial protrusions 82 (in Figure 4 (Example shown once) is arranged on one of the capturing tips 50. The fixed cutting tool 20 has capturing tips 50 on eight radial protrusions 82. In particular, the fixed cutting tool 20 has eight capturing tips 50. In particular, two radial protrusions 82 are constructed to be spaced apart from each other by a maximum of 12 mm.

[0155] In particular, the fixed cutting edge 64 of the fixed cutting tool 20 is the outer edge of the fixed cutting tool 20 that is away from the rotation axis 12, and is located on the two radial protrusions 82 on the fixed cutting body 68 and between the two radial protrusions 82 respectively.

[0156] The rotary cutting tool 16 is constructed as a hollow cylindrical disk. Viewed parallel to the rotation axis 12, this hollow cylindrical disk extends in a closed manner in terms of material between a defined imaginary inner radius of rotation 88 and a defined imaginary outer radius of rotation 90 (see reference). Figure 5 The rotary cutting tool 16 has a rotary cutting body 92 constructed as a hollow cylindrical disk, viewed parallel to the rotation axis 12, which extends in a closed manner in terms of material between a defined imaginary inner radius of rotation 88 and a defined imaginary outer radius of rotation 90. The imaginary outer radius of rotation 90 is smaller than the radius of the rotation circle 60 and / or the fixed circle 52, particularly at least 20% smaller relative to the larger radius. The imaginary outer radius of rotation 90 is smaller than the imaginary fixed outer radius 78, particularly at most 20% smaller relative to the larger radius.

[0157] Viewed parallel to the axis of rotation 12, the rotating cutting body 92 is completely confined, especially around the central recess 94 of the axis of rotation 12. In particular, viewed parallel to the axis of rotation 12, the central recess 94 is arranged at the geometric center of the fixed cutting tool 20.

[0158] The rotating cutting body 92 completely defines four additional recesses 96 between the imaginary inner radius of rotation 88 and the imaginary outer radius of rotation 90. These additional recesses are particularly smaller than the central recess 94 (especially by at least a factor of ten) when viewed in particular parallel to the axis of rotation 12.

[0159] The three cutting elements 18, 18', and 18" extend from a defined imaginary outer radius of rotation 90 to a defined imaginary maximum cutting radius 98, specifically to the rotation circle 60. The three cutting elements 18, 18', and 18" extend from the defined imaginary outer radius of rotation 90 to one of the tips 58 of the rotary cutting tool 16. The cutting radius 98 is at least 140% of the defined outer radius of rotation 90. The size of the cutting radius 98 is the same as the radius of the rotation circle 60 and / or the radius of the fixed circle 52.

[0160] The fixed cutting tool 20 is constructed in a double rotationally symmetrical manner about the axis of rotation 12 (see reference). Figure 4 The fixed cutting tool 20 is constructed symmetrically with respect to a 180° rotation about the axis of rotation 12. The radial protrusions 82 and the tip 42 of the fixed cutting tool 20 are each constructed in pairs, symmetrically about the axis of rotation 12. The straight outer edge of the fixed cutting tool 20, which is parallel to the connecting axis 48, can be rounded.

[0161] The rotary cutting tool 16 is configured to be rotationally symmetrical about the rotation axis 12 in three ways. The rotary cutting tool 16 is configured to be rotationally symmetrical about 120° about the rotation axis 12. The cutting elements 18, 18', 18” and the tip 58 of the rotary cutting tool 16 are configured to be rotationally symmetrical about the rotation axis 12 in three ways.

[0162] The imaginary center point of the fixed cutting tool 20 is arranged on the rotation axis 12. The imaginary center point of the rotary cutting tool 16 is also arranged on the rotation axis 12. The rotary cutting tool 16 is configured to be driven by the transmission unit 30 for rotation about the rotation axis 12, while the fixed cutting tool 20 is fixed in one of two positions, particularly the grass cutting position or the shrub cutting position 32. The rotary cutting tool 16 and the fixed cutting tool 20 are arranged parallel to (particularly along) the rotation axis 12, offset from each other, and particularly side by side.

[0163] Figure 6 The diagram illustrates the pivoting of the cutting device unit 14 of the cutting device apparatus 10 in the position of the rotating cutting tool 16 relative to the fixed cutting tool 20, particularly in perspective. In particular, Figures 6 to 8 A projection plane 102 perpendicular to the axis of rotation 12 is shown, showing the shadows cast by the rotating cutting tool 16 and the fixed cutting tool 20 through irradiation parallel to the axis of rotation 12. Figures 6 to 8 In the text, repetitive and distracting descriptions of this part are omitted, in which... Figures 6 to 8 In the figure, the same cutting device unit 14 is shown as in the previous figure.

[0164] Viewed parallel to the axis of rotation 12, at each rotation angle of the rotary cutting tool 16 around the axis of rotation 12, the rotary cutting tool 16, together with the fixed cutting tool 20, completely limits the through opening 100, especially radially, on two of the three cutting elements 18, 18', 18" (see reference). Figure 6 , Figure 7 and Figure 8 ).

[0165] The through opening 100 is partially defined by the rotary cutting tool 16 and partially by the fixed cutting tool 20. The through opening 100 is spaced apart from the central recess 94 and the fastening recess 80, and especially from the light spots of the central recess 94 and the fastening recess 80 in the projection plane 102. The central recess 94 and the fastening recess 80 are schematically represented here as circular, for illustrative purposes only, and are marked overlappingly.

[0166] The through-opening 100 is limited only by the rotary cutting tool 16 and the fixed cutting tool 20. The through-opening 100 is internally limited by the fixed cutting tool 20, and especially the fixed cutting blade 64, at the end facing the rotation axis 12, particularly in the radial direction. The through-opening 100 is externally limited by the rotary cutting tool 16, and especially the cutting blade 62, at the end opposite to the rotation axis 12, particularly in the radial direction. The through-opening 100 is limited by one of the fixed cutting blades 64 and one of the cutting blades 62.

[0167] Viewed parallel to the axis of rotation 12, the rotary cutting tool 16, together with the fixed cutting tool 20, completely defines two to four through openings 100 (see reference) on the cutting elements 18, 18', 18” at each rotation angle of the rotary cutting tool 16 around the axis of rotation 12, on all the cutting elements 18, 18', 18”, especially on the three cutting elements 18, 18', 18”, and especially radially. Figure 6 , Figure 7 and Figure 8 ).

[0168] Viewed parallel to the axis of rotation 12, and particularly in the direction of the axis of rotation 12, the rotary cutting tool 16, together with a fixed cutting tool 20, fully defines the through openings 100, particularly radially, on the two cutting elements 18, 18', 18" at at least one rotation angle of the rotary cutting tool 16 about the axis of rotation 12, wherein the through openings 100 are defined to different surfaces, particularly measured in the projection plane 102.

[0169] All two, three, or four fully penetrating openings 100, fully delimited when viewed parallel to the rotation axis 12 by the rotary cutting tool 16 and the fixed cutting tool 20, are delimited to different surfaces at at least one, and especially all, rotation angles of the rotary cutting tool 16 around the rotation axis 12. At any rotation angle of the rotary cutting tool 16 around the rotation axis 12, two fully penetrating openings 100, particularly radially delimited when viewed parallel to the rotation axis 12 by the rotary cutting tool 16 and the fixed cutting tool 20, are delimited to the same surface.

[0170] Viewed parallel to the axis of rotation 12, at at least one rotation angle of the rotary cutting tool 16 about the axis of rotation 12, the rotary cutting tool 16, together with the fixed cutting tool 20, completely demarcates the through opening 100 radially at all, especially at the three cutting elements 18, 18', 18" (see reference). Figure 6 Here, Figure 6In particular, one of the rotation angles of the rotary cutting tool 16 about the rotation axis 12 is shown, wherein, viewed parallel to the rotation axis 12, the rotary cutting tool 16, together with the fixed cutting tool 20, completely limits the penetration opening 100 in the radial direction at all, especially at the three cutting elements 18, 18', 18" of the rotary cutting tool 16.

[0171] The rotatability of the fixed cutting tool 20 is limited to a maximum angle of 90°. The fixed cutting tool 20 is movable relative to the stabilizing element 28, and is connected to the transmission unit 30 by a maximum rotation angle. The fixed cutting tool 20 is movable relative to the stabilizing element 28, and is connected to the transmission unit 30 by a maximum rotation angle (especially around the rotation axis 12). The fixed cutting tool 20 is movable relative to the housing unit 24, and is connected to the transmission unit 30 by a maximum rotation angle (especially around the rotation axis 12). The fixed cutting tool 20 is movable relative to the longitudinal axis 516 of the machine tool 500, and is connected to the transmission unit 30 by a maximum rotation angle (especially around the rotation axis 12). The two positions, especially the states, of the fixed cutting tool 20 are the end positions where the fixed cutting tool 20 rotates by a maximum rotation angle around the rotation axis 12.

[0172] The output shaft 40 is configured to drive the rotary cutting tool 16. The output shaft 40, and particularly its output shaft rotation axis 108, is oriented parallel to the rotation axis 12. Alternatively, the output shaft 40, and particularly its output shaft rotation axis 108, is arranged offset from the rotation axis 12. The output shaft 40 is partially constructed as a gear element (see reference). Figure 3 The output shaft 40 is rotatably supported on the stabilizing element 28, particularly about the machine output rotation axis 502. The output shaft 40 extends through the stabilizing element 28 (see reference). Figure 2 On the machine side 104 of the stabilizing element 28, the output shaft 40 is configured for coupling with the machine output shaft of the machine tool 500, while on the transmission side 106 of the stabilizing element 28, it is partially configured as a gear element.

[0173] The machine side 104 of the stabilizing element 28 is the side of the stabilizing element 28 facing the largest outer side of the smallest imaginary cube, which completely surrounds the stabilizing element 28. The transmission side 106 of the stabilizing element 28 is the side of the stabilizing element 28 facing the largest outer side of the smallest imaginary cube, which completely surrounds the stabilizing element 28. The machine side 104 and transmission side 106 of the stabilizing element 28 are oriented and / or arranged opposite to each other.

[0174] The transmission device 30 has a transmission gear element 110. The transmission gear element 110 is rotatably supported on the stabilizing element 28. Most of the transmission gear element 110 is arranged on the transmission side 106 of the stabilizing element 28.

[0175] The rotating shaft unit 38 is rotatably supported on the stabilizing element 28 about the rotation axis 12. The rotating shaft unit 38 is configured to connect with the rotary cutting tool 16.

[0176] The rotating shaft unit 38 is configured for torque transmission from the transmission gear element 110 to the rotary cutting tool 16. The transmission gear element 110 is rotatably supported on a stabilizing element 28 about a transmission rotation axis 112 parallel to the rotation axis 12. The transmission gear element 110 is configured, particularly shaped, to transmit torque from the output shaft 40 to the rotating shaft unit 38. The transmission gear element 110 is configured as at least one gear, and particularly exemplarily here as two gears with different radii offset along the rotation axis 12 of the transmission gear element 110. In the portion of the transmission gear element 110 configured as a gear with a larger radius, the transmission gear element 110 is configured to contact the output shaft 40. In the portion of the transmission gear element 110 configured as a gear with a smaller radius, the transmission gear element 110 is configured to contact the rotating shaft unit 38.

[0177] The rotating shaft unit 38 is partly constructed as a gear, particularly a rotating shaft gear 116, and partly as a receiving element 114, which are particularly immovably connected to each other. The rotating shaft unit 38 has four connecting elements 118, particularly locking elements, on the receiving element 114 for immovably connecting with the rotating cutting tool 16.

[0178] The connecting element 118 of the rotating shaft unit 38 is configured, and in particular shaped, for connection with an additional recess 96, which is defined by the rotating cutter body 92. The end of the rotating shaft unit 38 opposite to the connecting element 118, and in particular the locking element, is configured as a gear, and in particular a rotating shaft gear 116, which has a larger radius than other gear-configured portions of the rotating shaft unit 38 and / or than gear-configured portions of the transmission gear element 110.

[0179] The rotating shaft unit 38 is constructed rotationally symmetrically about the rotation axis 12, particularly including the sharp corners of the portion of the rotating shaft unit 38 constructed as a gear (particularly the rotating shaft gear 116). The rotating shaft unit 38 is constructed mirror-symmetrically with respect to at least four different mirror planes partially opened by the rotation axis 12, particularly including the sharp corners of the portion of the rotating shaft unit 38 constructed as a gear (particularly the rotating shaft gear 116). The portion of the rotating shaft unit 38 constructed as the receiving element 114 is constructed mirror-symmetrically with respect to at least four different mirror planes partially opened by the rotation axis 12. The portion of the rotating shaft unit 38 constructed as the receiving element 114 largely defines the mirror symmetry of the rotating shaft unit 38.

[0180] The cutting device assembly 10 includes a stop unit 120. The stop unit 120 has a stop element 122. The stop element 122 is configured to prevent the rotary cutting tool 16 and the stationary cutting tool 20 from falling into the transmission unit 30. The stop unit 120 is configured as part of the transmission unit 30. The stop element 122 is configured as a pin element and / or bolt element with a screw head 124.

[0181] The stop unit 120 is rotatably, especially freely rotatably, supported on the transmission unit 30, especially on the rotating shaft unit 38. The stop unit 120 includes two rotating bearing elements 126, especially ball bearings, through which the stop unit 120 is rotatably supported on the transmission unit 30, especially on the rotating shaft unit 38.

[0182] The rotary cutting tool 16 is rotatably, and especially freely, supported on the stabilizing element 28 by two rotary bearing elements 126, particularly ball bearings, and is particularly driveable to rotate. The stop unit 120 has a locking element 128. The locking element 128 is configured to lock the rotating element 130, around which the rotating shaft unit 38 is rotatably supported, particularly radially outward, around the rotary bearing elements 126, particularly by two rotary bearing elements 126. The locking element 128 is arranged, particularly supported, particularly radially inward, within the rotating shaft unit 38 (see reference). Figure 2 The locking element 128, and especially the locking rotating element 130, are fixedly connected to the stabilizing element 28.

[0183] The rotary cutting tool 16 is rotatably supported around the locking element 128, particularly by means of the rotary bearing element 126. The stop element 122 extends through the fixed cutting tool 20, through the rotary cutting tool 16, through the rotary shaft unit 38, through the rotary bearing element 126, through the stabilizing element 28, and through the locking element 128 (particularly the locking rotary element 130), particularly along the longitudinal axis 132 of the stop element 122, and is oriented particularly parallel to the axis of rotation 12 with respect to the longitudinal axis 132 of the stop element 122.

[0184] The fixed cutting tool 20 can be fixed to the locking element 128 in two positions where it is twisted about the axis of rotation 12, especially by 90°.

[0185] The stop element 122 has a groove 134, which is arranged on the stop element 122 at one end along the longitudinal axis 132 (see reference). Figure 3 ).

[0186] The stop unit 120 has two retaining elements 136. The retaining elements 136 are configured to stop the stop element 122 on the side of the stabilizing element 28 opposite to the fixed cutting tool 20. The retaining elements 136 are each configured as retaining rings, and more particularly as washers. One of the retaining elements 136 is partially, particularly relative to the axis of rotation 12, arranged radially inward in a groove 134, particularly for axially stopping the stabilizing element 122 (see reference). Figure 2 The retaining element 136 is movably supported in the housing unit 24, particularly along the axis of rotation 12 and especially relative to the stabilizing element 28.

[0187] Unlike the groove 134, the stop element 122 is constructed such that a portion of the screw head 124 is arranged on different sides of the fixed cutting tool 20, the rotary cutting tool 16, the rotary shaft unit 38, the rotary bearing element 126, the stabilizing element 28, and the locking element 128 (especially the locking rotary element 130). The stop element 122 is constructed such that a portion of the screw head 124 is arranged on the side of the stabilizing element 28 facing the fixed cutting tool 20, especially the drive side 106. The groove 134 of the stop element 122 is arranged on the side of the stabilizing element 28 away from the fixed cutting tool 20, especially the machine side 104.

[0188] The fixing unit 120 has a spring element 138. The spring element 138 is configured to apply force to the stop element 122 along the rotation axis 12, particularly generating a pressing force between the rotary cutting tool 16 and the fixed cutting tool 20, especially from the rotary cutting tool 16 to the fixed cutting tool 20, and vice versa. The spring element 138 is configured as a helical spring, its configuration being designed to create a force through compression of the spring element 138. The spring element 138 is arranged between the locking element 128, particularly the locking rotary element 130, and the retaining element 136. The spring element 138 is configured to generate pressing forces from the fixed cutting tool 20 to the rotary cutting tool 16 and from the rotary cutting tool 16 to the fixed cutting tool 20 via the stop element 122. The spring element 138 is also configured to generate pressing forces from the fixed cutting tool 20 to the stabilizing element 28, particularly a pressing force pointing inward relative to the housing unit 24. Spring element 138 is configured to generate a preload force between the fixed cutting tool 20 and the rotary cutting tool 16 via stop element 122.

[0189] The stop element 122 is movably, especially pre-loaded and displaceable, supported along the rotation axis 12. The stop element 122 is movably, especially movably, supported on the housing unit 24 along the rotation axis 12, especially partially supported within the housing unit, particularly relative to the stabilizing element 28. The fixed cutting tool 20 is movably, especially movably, supported on the housing unit 24 along the rotation axis 12, especially partially supported within the housing unit, particularly relative to the stabilizing element 28.

[0190] The fixed unit 120 has an operating element 140 (see reference). Figure 2 and Figure 3 ,exist Figure 11 In the cutting device apparatus 10, the operating element 140 is not shown. The operating element 140 is non-rotatably connected to the fixed cutting tool 20. The operating element 140 is fixedly connected to the fixed cutting tool 20.

[0191] The longitudinal axis 142 of the operating element 140 is oriented perpendicularly to the rotation axis 12 (see reference). Figure 2 and Figure 3 The operating element 140 extends parallel to the rotation axis 12. The maximum extension 144 of the operating element 140 parallel to the rotation axis 12 is half of the maximum longitudinal extension 146 of the operating element 140.

[0192] The operating element 140 has an upper limit recess 150 on its outer surface 148, particularly a gripping recess 152, which defines a surface normal perpendicular to the axis of rotation 12 in the middle. This recess is specifically configured to make the operating element 140 grippable.

[0193] The operating element 140 comprises three plate-shaped portions 154, 156, and 158, which are integrally constructed with each other. The largest plate-shaped portion 154 has surface normals on its outermost surface, which are oriented parallel to the rotation axis 12. Two identical plate-shaped portions 156 and 158 have surface normals on their respective outermost surfaces, which are oriented perpendicular to the rotation axis 12. The two identical plate-shaped portions 156 and 158 are arranged spaced apart from each other on the largest plate-shaped portion 154. The two identical plate-shaped portions 156 and 158 are arranged spaced apart from the rotation axis 12 on the largest plate-shaped portion 154. The two identical plate-shaped portions 156 and 158 are arranged mirror-symmetrically with each other, and in particular, rotationally symmetrically about the rotation axis 12 on the largest plate-shaped portion 154. Each of the two identical plate-shaped portions 156 and 158 has a plate surface, which is oriented parallel to the rotation axis 12. The largest plate-shaped portion 154 has a plate surface oriented perpendicular to the axis of rotation 12.

[0194] Recesses 150, particularly gripping recesses 152, are arranged on two plate-shaped portions 156 and 158 of the same size on the operating element 140, especially on the radially outward side.

[0195] The stop element 122 extends through the operating element 140, particularly along the longitudinal axis 132 of the stop element 122 through the largest plate-like portion 154 of the operating element 140. The operating element 140 has a maximum longitudinal extension 146 perpendicular to the axis of rotation 12. The operating element 140 extends parallel to the axis of rotation 12 by at most one-quarter of the maximum longitudinal extension 146. The stop element 122 is connected to the operating element 140 inside the screw head 124, for example, by adhesive bonding. The operating element 140 has a maximum longitudinal extension 146 perpendicular to the axis of rotation 12, which is at most four times the maximum extension 144 of the operating element 140 parallel to the axis of rotation 12.

[0196] The stop element 122, the fixed cutting tool 20, the rotating shaft unit 38, the output shaft 40, and the transmission gear element 110 are constructed of metal. The operating element 140 is constructed of plastic.

[0197] The operating element 140 extends parallel to the rotation axis 12 at a maximum of half of its maximum longitudinal extension 146, measured at the maximum extension 144 of the operating element 140 parallel to the rotation axis 12. The operating element 140 has a maximum longitudinal extension 146 perpendicular to the rotation axis 12, which is at least three times the maximum extension 144 of the operating element 140 parallel to the rotation axis 12.

[0198] The operating element 140 has a maximum longitudinal extension 146 perpendicular to the rotation axis 12, which is at least as large as the maximum longitudinal extension 160 of the rotary cutting tool 16 perpendicular to the rotation axis 12. The maximum longitudinal extension 146 of the operating element 140 is exactly the same as the maximum longitudinal extension 160 of the rotary cutting tool 16. The edge of the operating element 140, particularly one edge, is constructed to bend away from the fixed cutting tool 20 along the longitudinal axis 142 of the operating element 140.

[0199] The stop unit 120 has a locking element 128, especially a locking rotating element 130, around which the rotating cutting tool 16 is rotatably supported, while the fixed cutting tool 20 can be fixed to the locking element in two positions that are twisted relative to each other about the rotation axis 12.

[0200] The locking element 128 is constructed as a hollow pin element and / or a hollow bolt element, which defines a continuous locking cavity 164 along the longitudinal axis 162 of the locking element 128, and particularly has a circular outer contour (see reference). Figure 3 The locking cavity 164 is configured to receive the stop element 122.

[0201] The stop element 122 extends completely through the locking element 128 along the longitudinal axis 162. The stop element 122 is arranged in the locking element 128. The stop element 122 is rotatably supported in the locking element 128.

[0202] The stop element 122 is rotatably supported in the locking element 128 at a particularly maximum angle of 90°, for example by the stop element 166 of the stop element 122 and the locking recess 168 of the locking element 128 in the locking cavity 164 (see reference). Figure 2 ).

[0203] The fixed cutting tool 20 can be fixed to the locking element 128 in two positions, particularly in the grass cutting position and the shrub cutting position 32, and particularly in the hedge cutting position 34. The locking element 128 is connected to the stabilizing element 28 in a way that prevents it from rotating about the rotation axis 12. The locking element 128 is fixedly connected to the stabilizing element 28.

[0204] The locking element 128 has four protruding elements 170 at its end along the longitudinal axis 162 of the locking element 128. The four protruding elements 170 protrude parallel to the longitudinal axis 162 of the locking element 128, and in particular along the axis of rotation 12.

[0205] Four protruding elements 170 define four fixing cavities 172 in the circumferential direction around the rotation axis 12. These fixing cavities are specifically configured to secure the cutting tool 20 to the locking element 128 to prevent rotation about the rotation axis 12. The four protruding elements 170 are configured to be arranged in the fastening recesses 80 of the cutting tool 20. Viewed particularly parallel to the rotation axis 12, the fastening recesses 80 have at least one generally H-shaped outer contour.

[0206] Four protruding elements 170 project equally along the axis of rotation 12. The four protruding elements 170 have an extension of the same length along the axis of rotation 12.

[0207] The tool interface unit 22 is configured to be detachably connected to the particularly portable machine tool 500.

[0208] The fixing unit 26 of the tool interface unit 22 is configured for use with, in particular, a portable machine tool 500 (see reference). Figure 2 and Figure 3 In particular, the connection is detachable. The fixing unit 26 is configured to be detachably connected to the stabilizing element 28 on the side opposite to the transmission unit 30, particularly on the machine side 104, and particularly to the portable machine tool 500.

[0209] The fixing unit 26 includes a pin element 174. The pin element 174 is configured to be arranged in an orientation recess of the machine tool 500 when the machine tool 500 is connected to the cutting device assembly 10, particularly via the tool interface unit 22. The pin element 174 has a longitudinal axis 176, which is oriented parallel to the rotation axis 12. The fixing unit 26 of the tool interface unit 22 is configured at the tool receiving portion 504 of the machine tool 500 for particularly detachable connection to the particularly portable machine tool 500. The fixing unit 26 of the tool interface unit 22 is configured for particularly detachable connection to the particularly portable machine tool 500, wherein the output shaft 40 is coupled to a machine output shaft (not shown) for torque transmission. The cutting device assembly 10 can be particularly detachably connected to the particularly portable machine tool 500 via the tool interface unit 22, wherein the output shaft rotation axis 108 of the output shaft 40 is the same as the machine output rotation axis of the machine output shaft.

[0210] The fixing unit 26 includes four locking elements, particularly a fixing locking element 178, for locking connection with the machine tool 500. A plurality of movable locking elements of the machine tool 500, particularly machine-fixed locking elements (not shown), are configured to engage behind the fixing locking element 178 of the fixing unit 26. The machine-fixed locking elements of the machine tool 500 can be displaced together on the machine tool side, particularly by means of a common release element 520 of the machine tool 500 (see reference). Figure 1 ).

[0211] Four locking elements 178 are connected to the stabilizing element 28. The locking elements 178 and the stabilizing element 28 are integrally constructed. The locking elements 178 are respectively arranged on the helical recesses 180 of the stabilizing element 28. The helical recesses 180 are configured to connect the stabilizing element 28 to the housing unit 24. The stabilizing element 28 is screwed onto the housing unit 24 at multiple, especially at least five, helical recesses 180.

[0212] Machine tool 500, particularly tool receiving unit 504, has a plurality of machine locking elements, which are specifically configured to connect with locking element 178. Machine tool 500, particularly tool receiving unit 504, has a number of machine locking elements comparable to the number of locking elements 178 in fixing unit 26. The machine locking elements are configured to engage behind locking element 178 for a particularly detachable connection between cutting device 10 and machine tool 500. Machine tool 500 includes a release element 520 configured to release the connection between the machine locking elements and locking element 178. Release element 520 is configured as a lever element, particularly a bent lever element. Release element 520 is configured for common displacement, particularly movement, such as movement, of the machine locking elements.

[0213] Figure 9 A schematic diagram of a method 400 for setting the cutting function of the cutting device 10, particularly the grass or shrub trimming function of the cutting device 10, is shown.

[0214] In one process step, particularly in the pulling step 402, the stop element 122 is displaced along the rotation axis 12 against the reaction force, particularly the pressing force. In one process step, particularly in the pulling step 402, the operating element 140, which includes the stop element 122 and the fixed cutting tool 20, moves away from the rotary cutting tool 16 along the rotation axis 12 against the pressing force of the spring element 138.

[0215] In one method step, particularly in rotation step 404, the fixed cutting tool 20 is rotated 90°. In one method step, particularly in rotation step 404, the operating element 140 rotates 90° around the rotation axis 12 together with the fixed cutting tool 20, particularly from the grass cutting position to the shrub cutting position 32, or from the shrub cutting position 32 to the grass cutting position.

[0216] In one method step, particularly in the fixing step 406, the operating element 140, which includes a stop element 122 and a fixed cutting tool 20, moves along the rotation axis 12 toward the rotating cutting tool 16 by means of the pressing force of the spring element 138, particularly to the shrub cutting position 32 or the grass cutting position. In one method step, particularly in the fixing step 406, the fixed cutting tool 20 is connected to the fastening recess 80 on the protruding element 170 in the grass cutting position or the shrub cutting position 32.

[0217] Figure 10 A schematic diagram of a method 450 for cutting grass and / or shrubs by means of a cutting device 10 is shown.

[0218] In one method step, particularly in operation step 452, by rotating the rotary cutting tool 16, the cutting elements 18, 18', 18" generate a cutting force vector 70 on the cutting material 182. This cutting force vector points in the following direction, particularly the cutting force direction, which is centered between the tangential direction 72 at the tip 58 of the cutting elements 18, 18', 18" and the opposite direction of the cutting motion 74, with a maximum deviation of 15°. The opposite direction of the cutting motion 74 is oriented perpendicular to the rotation axis 12 with a maximum deviation of 30° and parallel to the longitudinal axis 36 of the fixed cutting tool 20, particularly the connecting axis 48, with a maximum deviation of 45°.

[0219] In one method step, particularly in step 452, the cutting elements 18, 18', 18" generate a cutting force vector 70 on the inner side of the cutting elements 18, 18', 18" and particularly the sickle-shaped cutting elements 18, 18', 18" by the rotation of the rotating cutting tool 16.

[0220] Figure 11 The vectors of method 450 are shown schematically. The reference numerals for method 450 play a secondary role and are not shown here for clarity.

[0221] The opposite direction of the cutting motion 74 is the opposite direction of the motion direction 184 of the machine tool 500, especially the cutting device 10, especially the cutting motion direction.

[0222] The cutting motion reverse direction 74 and the cutting motion direction, especially the motion direction 184, are oriented parallel to the longitudinal axis 36 of the fixed cutting tool 20, especially to the connecting axis 48, with a maximum deviation of 15°. The cutting motion reverse direction 74 and the cutting motion direction, especially the motion direction 184, are oriented perpendicular to the rotation axis 12 of the fixed cutting tool 20, with a maximum deviation of 15°.

[0223] The cutting force direction, especially the cutting force vector 70, points radially inward, particularly relative to the rotation axis 12.

[0224] Figure 12 A schematic side view of a machine tool 500 with a cutting device assembly 10 is shown. For clarity, most of the reference numerals for the cutting device assembly 10 are in [reference numerals]. Figures 12 to 17 It is not given in the text.

[0225] Handle unit 506 is specifically designed for use with a portable machine tool 500, particularly for portable grass and / or bush shears. Handle unit 506 is configured, and particularly designed, for ergonomic manual guidance of the machine tool 500 by both right-handed and left-handed users. Handle unit 506 includes a housing 200. Handle unit 506 includes a support element 202. Housing 200 is constructed as part of machine housing unit 514. Housing 200 is integrally constructed with machine housing unit 514. Housing 200 is largely constructed of plastic material, particularly the same plastic material as machine housing unit 514.

[0226] The housing 200 of the handle unit 506 has a varied columnar shape for constructing a pistol grip-type single-handed handle. The handle unit 506 connects the battery unit 508 to the main machine part 512, in which the motor unit, particularly the electric motor, of the machine tool 500 is arranged.

[0227] A tool receiver 504 is arranged on the main body 512 of the machine. The tool receiver 504 forms the outer side of the main body 512 of the machine. The cutting device device 10 is configured for coupling with the main body 512 of the machine, particularly by means of the tool receiver 504. The battery unit 508 has a battery interface 522. The battery unit 508 has a housing 524, which is integrally constructed with the housing 200 of the handle unit 506.

[0228] The boundary 204 between the handle unit 506 and the battery unit 508 is oriented perpendicular to the longitudinal axis 510 of the handle unit 506 (see reference). Figure 12 The boundary 204 between the handle unit 506 and the battery unit 508 is arranged on the side of the handle unit 506 facing the battery unit 508. The boundary 204 between the handle unit 506 and the battery unit 508 is arranged such that, starting from this location, the maximum extension 208 of the handle unit 506 perpendicular to the longitudinal axis 510 of the handle unit 506 is greater than the maximum extension 210 of the handle unit 506 perpendicular to the longitudinal axis 510 of the handle unit 506 at the support element 202. The maximum extension 210 of the handle unit 506 perpendicular to the longitudinal axis 510 of the handle unit 506 at the support element 202 is the maximum extension of the handle unit 506 perpendicular to the longitudinal axis 510 of the handle unit 506, and the support element 202 constitutes a part of said maximum extension.

[0229] The boundary 206 between the handle unit 506 and the main machine part 512 is located at the point where the trigger switch 212 of the handle unit 506 ends in the direction of the rotation axis 12. The boundary 206 between the handle unit 506 and the main machine part 512 is located at a point where, from this point, the maximum extension 214 of the handle unit 506 perpendicular to the longitudinal axis 510 of the handle unit 506 is greater than the maximum extension 210 of the handle unit 506 perpendicular to the longitudinal axis 510 of the handle unit 506 at the support element 202, on the side of the trigger switch 212 away from the support element 202.

[0230] The handle unit 506, and particularly the housing 200 of the handle unit 506, defines a longitudinal axis 510 of the handle unit 506 along a main extending direction 216. The handle unit 506, and particularly the housing 200 of the handle unit 506, defines a transverse axis 526 of the handle unit 506 along the main extending direction 216, which is oriented perpendicularly to the longitudinal axis 510 of the handle unit 506 (see, in particular, reference). Figure 13 The handle unit 506 has a depth axis 528. The depth axis 528 is oriented perpendicular to the transverse axis 526 and the longitudinal axis 510 of the handle unit 506.

[0231] The longitudinal axis 510 of the handle unit 506 is oriented parallel to the longitudinal axis 516 of the machine tool 500, which in particular includes the handle unit 506, with a maximum deviation of 30°. The longitudinal axis 510 of the handle unit 506 is parallel to the connection direction 530 of the replaceable battery 532 of the battery unit 508, with a maximum deviation of 30°. The transverse axis 526 of the handle unit 506 is parallel to the longitudinal axis 36, and particularly the connecting axis 48, of the fixed cutting tool 20 in the bush cutting position 32, with a maximum deviation of 30°. The transverse axis 526 of the handle unit 506 is perpendicular to the longitudinal axis 36, and particularly the connecting axis 48, of the fixed cutting tool 20 in the grass cutting position, with a maximum deviation of 30°. The longitudinal axis 510 of the handle unit 506 is parallel to the longitudinal axis 36, and particularly the connecting axis 48, of the fixed cutting tool 20 in the grass cutting position, with a maximum deviation of 30°. The longitudinal axis 510 of the handle unit 506 is perpendicular to the longitudinal axis 36 of the fixed cutting tool 20 in the bush-cutting position 32, and particularly the connecting axis 48, with a maximum deviation of 30°. The handle unit 506, and particularly the housing 200 of the handle unit 506, has the longitudinal axis 510 of the handle unit 506, and particularly the housing 200 of the handle unit 506, has the transverse axis 526 of the handle unit 506, and particularly the housing 200 of the handle unit 506.

[0232] The handle unit 506 has two opposing, particularly mirror-symmetrically constructed recesses 218, 218' on the side of the housing 200 facing away from the transverse axis 526. The recesses 218, 218' are arranged on the handle unit 506 on the opposite side of the housing 200 along the transverse axis 526. A corresponding recess 218, 218' is arranged on the handle unit 506 at one of the sides of the housing 200 facing away from the transverse axis 526. In particular, the two recesses 218, 218' are mirror-symmetrically constructed with respect to a surface perpendicular to the transverse axis 526 of the handle unit 506.

[0233] The two depth portions 218 and 218' are each partially defined by the housing 200 of the handle unit 506. The two depth portions 218 and 218' are defined by the handle unit 506 on both sides parallel to the longitudinal axis 510 of the handle unit 506. The two depth portions 218 and 218' are each partially defined by the handle unit 506, particularly on one side, particularly in the direction towards the corresponding other depth portion 218 and 218', parallel to the transverse axis 526 of the handle unit 506. The two depth portions 218 and 218' are partially unrestricted along the depth axis 528 of the handle unit 506 on the front side 220 of the handle unit 506, particularly on the side of the handle unit 506 facing the trigger switch 212. The front side 220 of the handle unit 506 is the side of the handle unit 506 facing the trigger switch 212.

[0234] The two digging portions 218, 218' are respectively confined to the extension 222 parallel to the longitudinal axis 510 of the handle unit 506, the extension being at least 70% of the longitudinal extension 534 of the handle unit 506. The two digging portions 218, 218' are respectively confined to the extension 222 parallel to the longitudinal axis 510 of the handle unit 506, the extension being at most 80% of the longitudinal extension 534 of the handle unit 506.

[0235] On the side facing the rear 226 of the handle unit 506, particularly the side of the handle unit 506 opposite to the trigger switch 212, two recesses 218, 218' are defined in a curved shape. Specifically, the two recesses 218, 218' facing the rear 226 of the handle unit 506 are defined in a convex curved shape. In particular, the housing 200 of the handle unit 506 is constructed in a concave curved shape from the front 220 of the handle unit 506 in the direction towards the rear 226 of the handle unit 506. Viewed along the transverse axis 526 of the handle unit 506, the two recesses 218, 218' are each at least substantially circular, particularly semi-circular, in construction.

[0236] In particular, the support element 202 is configured, especially in the operating state of the machine tool 500, to support the inner surface of the hand, especially the palm, and especially according to the user's anatomy, to support the inner surface of the user's middle hand and / or the inner surface of the wrist, especially the inner surface of the thumb wrist. In particular, the support element 202 is configured to guide the handle unit 506 with minimal gap through the inner surface of the user's hand, especially the palm, especially the inner surface of the middle hand and / or the inner surface of the wrist, especially the inner surface of the thumb wrist.

[0237] Support element 202 extends partially along the transverse axis 526. Support element 202 has a longitudinal axis 228, which is oriented parallel to the transverse axis 526 of the handle unit 506. The longitudinal axis 228 of support element 202 is oriented at least substantially perpendicular to the rotation axis 12. The longitudinal axis 228 of support element 202 is at least substantially perpendicular to the longitudinal axis 510 of the handle unit 506. The longitudinal axis 228 of support element 202 is at least substantially perpendicular to the depth axis 528 of the handle unit 506. In one state, and especially in all states, support element 202 extends substantially, and especially completely, along the transverse axis 526 of the handle unit 506, particularly through the housing 200 of the handle unit 506. Viewed along the transverse axis 526 of the handle unit 506, support element 202 has a curved I-shaped and / or kidney-shaped outer contour.

[0238] The support element 202 has a maximum extension 230 parallel to the longitudinal axis 510 of the handle unit 506, which is at least 33% of the maximum extension 222 of the two digging portions 218, 218' parallel to the longitudinal axis 510 of the handle unit 506 (see reference). Figure 12 The support element 202 has a maximum extension 230 parallel to the longitudinal axis 510 of the handle unit 506, which is at most 50% of the maximum extension 222 of the two digging portions 218, 218' parallel to the longitudinal axis 510 of the handle unit 506 (see reference). Figure 12 ).

[0239] The support element 202 can be selectively, especially partially, arranged in one of the two excavation sections 218, 218' (see reference). Figures 14 to 17 In each configuration of the support element 202, the support element 202 is partially arranged in at least one of the two excavation sections 218, 218'. In particular, in one configuration of the support element 202, the support element 202 is partially arranged in exactly one of the two excavation sections 218, 218'.

[0240] The support element 202 is supported in the housing 200 of the handle unit 506 in a manner movable along the transverse axis 526. Specifically, the support element 202 is supported in the housing 200 of the handle unit 506 in a manner translatably movable along the transverse axis 526. The support element 202 is configured, particularly within the housing 200 of the handle unit 506, to be locked and / or fixed in two positions, particularly end positions 232 and 234, especially with respect to movement along the transverse axis 526 of the handle unit 506. End positions 232 and 234 are positions of the support element 202 in which movement along the transverse axis 526 of the handle unit 506 is achieved in only one direction, particularly depending on the bearings of the support element 202.

[0241] The handle unit 506 has a bearing unit (not shown) for supporting the support element 202 in a translationally movable manner on the housing 200 of the handle unit 506.

[0242] In particular, the bearing unit is configured to lock and / or fix the support element 202 in two positions, particularly end positions 232 and 234, relative to movement along the transverse axis 526 of the handle unit 506. Specifically, the bearing unit has a bearing rail on which the support element 202 is supported. Furthermore, the bearing unit has locking and / or fixing units having, for example, two locking elements on the rail element and locking recesses on the support element 202, for locking the support element 202 in two different end positions 232 and 234 on the bearing rail.

[0243] Specifically, end positions 232 and 234 are positions of the support element 202 in which it is partially arranged in exactly one of the two recesses 218 and 218', and also partially arranged within the housing 200 of the handle unit 506. The two end positions 232 and 234 correspond to either a right-handed user position or a left-handed user position of the support element 202.

[0244] The support element 202 is partially and elastically deformable. The support element 202 is partially, particularly externally, constructed of an elastomeric material that forms the structured surface of the support element 202. The support element 202 has two end faces 236, 236', which are arranged opposite to each other along the transverse axis 526 of the handle unit 506. The support element 202 is partially arched, particularly inwardly arched, at the end faces 236, 236'.

[0245] The two end faces 236, 236' are the sides of the support element 202, which are arranged opposite to each other along the transverse axis 526 of the handle unit 506. The two end faces 236, 236' are constructed to arch inward toward the center of the respective end faces 236, 236'. The support element 202 is constructed in a partially contoured manner, especially on the two end faces 236, 236'.

[0246] The support element 202 has a longitudinal extension 224 oriented parallel to the transverse axis 526 of the handle unit 506. The support element 202 has a maximum longitudinal extension 224 along the transverse axis 526 of the handle unit 506, said maximum longitudinal extension being at most 125% of the maximum lateral extension 238 of the housing 200 along the transverse axis 526 of the handle unit 506. The support element 202 has a maximum longitudinal extension 224 parallel to the transverse axis 526 of the handle unit 506, said maximum longitudinal extension being at least 0.6 times the maximum lateral extension 238 of the housing 200 along the transverse axis 526 of the handle unit 506.

[0247] In particular, when viewed perpendicular to the projection plane, at one of the end positions 232 and 234 of the support element 202, at least 75% of the projected shadow of the support element 202 within the projection plane opened by the longitudinal axis and the transverse axis 526 is arranged within the projected shadow of the housing 200 of the handle unit 506 within the projection plane (see reference). Figure 16 ).

[0248] The support element 202 is constructed differently from the release element and / or the rotation direction selection element of the machine tool 500.

[0249] Handle unit 506 has a trigger switch 212 for starting machine tool 500. Trigger switch 212 is configured to change the rotational speed of the electric motor in motor unit 506. In particular, trigger switch 212 is configured for operation by the index finger. The trigger switch 212 of handle unit 506 is arranged on the outer side of the end of handle unit 506 along the depth axis 528 of handle unit 506, particularly on the hypothetical end of handle unit 506 facing the depth axis 528.

[0250] When viewed along the horizontal axis 526, the housing 200, particularly the handle unit 506, has a convexly curved outer profile in the central region 240, particularly in the middle 50% of the side facing away from the trigger switch 212, and particularly on the rear side 226. Viewed along the horizontal axis 526, the housing 200 has a convexly curved outer profile in the central region 242, particularly in the middle 25% of the side facing the trigger switch 212, and particularly on the front side 220. Viewed along the horizontal axis 526, the housing 200 has an M-shaped or W-shaped curved outer profile on the side facing the trigger switch 212, particularly on the front side 220 (see reference). Figure 1 , Figure 12or Figure 13 ).

[0251] The housing 200, and especially the handle unit 506, has a back grip element 244 in the central region 240 on the side opposite to the trigger switch 212. The back grip element 244 is constructed in a way that allows for elastic deformation.

[0252] The handle unit 506 is constructed of an elastomeric material, particularly the same elastomeric material as the support element 202, at its rear side 226, and especially at the housing 200, to reduce the risk of slipping off the handle unit 506. A back grip element 244 is arranged at the rear side 226 of the handle unit 506, particularly as part of the housing 200. The back grip element 244 is also constructed of an elastomeric material, particularly the same elastomeric material as the support element 202.

Claims

1. A handle unit for a machine tool (500), wherein, The handle unit (506) is provided with ergonomic manual guidance for right-handed and left-handed users of the machine tool (500), wherein the handle unit (506) includes a housing (200) having a varying column shape, wherein the handle unit (506) defines a longitudinal axis (510) and a transverse axis (526) along a main extension direction (216), wherein the handle unit (506) has two opposing digging portions (218, 218') on a side of the housing (200) opposite to the transverse axis (526), ​​characterized in that the handle unit (506) has at least one support element (202) which can be selectively arranged in at least one of the at least two digging portions (218, 218') and extends at least partially along the transverse axis (526).

2. The handle unit according to claim 1, characterized in that, The machine tool (500) is a portable machine tool.

3. The handle unit according to claim 1, characterized in that, The machine tool (500) is a grass and / or shrub shear.

4. The handle unit according to claim 1, characterized in that, The varied column shape is used to construct a pistol grip-style one-handed handle.

5. The handle unit according to claim 1, characterized in that, The excavated section (218, 218') is constructed radially symmetrically.

6. The handle unit according to claim 1, characterized in that, The support element (202) is used to support the inside of the user's hand.

7. The handle unit according to any one of claims 1 to 6, characterized in that, The at least one support element (202) is supported in the handle unit (506) in a manner that allows it to move along the transverse axis (526).

8. The handle unit according to claim 7, characterized in that, The at least one support element (202) is supported in the handle unit (506) in such a way that it can translate along the transverse axis (526).

9. The handle unit according to claim 7, characterized in that, The at least one support element (202) is configured to be able to lock and / or be fixed in at least two positions.

10. The handle unit according to claim 7, characterized in that, The at least one support element (202) is configured to be able to lock and / or be fixed in the end position (232, 234).

11. The handle unit according to any one of claims 1 to 6, characterized in that, The at least one support element (202) is at least partially elastically deformable in configuration and / or shape.

12. The handle unit according to claim 11, characterized in that, The at least one support element (202) is arched at the end face (236, 236').

13. The handle unit according to any one of claims 1 to 6, characterized in that, The at least one support element (202) has a maximum longitudinal extension (224) along the transverse axis (526) of the handle unit (506), which is at most 125% of the maximum lateral extension (238) of the housing (200) along the transverse axis (526) of the handle unit (506).

14. The handle unit according to any one of claims 1 to 6, characterized in that, The at least one support element (202) has a maximum longitudinal extension (224) along the transverse axis (526) of the handle unit (506), the maximum longitudinal extension being at least 0.6 times the size of the maximum lateral extension (238) of the housing (200) along the transverse axis (526) of the handle unit (506).

15. The handle unit according to any one of claims 1 to 5, characterized in that, Viewed perpendicularly to the projection plane opened by the longitudinal axis and the transverse axis (526), ​​the projection shadow of the at least one support element (202) in the projection plane is arranged at least 75% of the end position (232, 234) of the at least one support element (202) inside the projection shadow of the housing (200) in the projection plane.

16. The handle unit according to any one of claims 1 to 6, characterized in that, The at least one support element (202) is constructed differently for the machine tool (500) from the release element and / or from the rotation direction selection element.

17. The handle unit according to any one of claims 1 to 6, characterized in that, The handle unit (506) has a trigger switch (212) for turning on the machine tool (500), wherein the housing (200) has a convexly curved outer contour in the middle region (240) at least on the side opposite to the trigger switch (212) when viewed along the transverse axis (526).

18. The handle unit according to any one of claims 1 to 6, characterized in that, The handle unit (506) has a trigger switch (212) for turning on the machine tool (500), wherein the housing (200) has a convexly curved outer contour in the middle region (242) of the side facing the trigger switch (212) along the transverse axis (526).

19. The handle unit according to any one of claims 1 to 6, characterized in that, The handle unit (506) has a trigger switch (212) for turning on the machine tool (500), wherein the housing (200) has a back grip element (244) in the middle region (240) on the side opposite to the trigger switch (212), the back grip element being at least partially elastically deformable.

20. A machine tool (500) having a handle unit (506) according to any one of claims 1 to 19.

21. The machine tool according to claim 20, characterized in that, The machine tool (500) is a portable machine tool.

22. The machine tool according to claim 20, characterized in that, The machine tool (500) is a grass and / or shrub shear.

23. The machine tool according to claim 20, characterized in that, A tool receiving section (504) is provided for coupling with at least one tool device (702) in a manner rotatable about a rotation axis (12), wherein the rotation axis (12) is oriented perpendicular to the longitudinal axis (510) of the handle unit (506) at a maximum deviation of 15°.

24. The machine tool according to claim 20, characterized in that, A cutting device unit (14) is provided, the cutting device unit having at least one rotary cutting tool (16) that is rotatably supported and driven about a rotation axis (12), the rotary cutting tool including at least one cutting element (18, 18', 18''), the cutting device unit also having at least one fixed cutting tool (20), wherein the at least one rotary cutting tool (16) has at least three cutting elements (18, 18', 18'') and is viewed parallel to the rotation axis (12) at each rotation angle of the at least one rotary cutting tool (16) about the rotation axis (12), together with the fixed cutting tool (20), completely defining at least one through opening (100) at at least two of the at least three cutting elements (18, 18', 18'').

25. The machine tool according to claim 20, characterized in that, A cutting device unit (14) is provided, the cutting device unit having at least one rotary cutting tool (16) that is rotatably supported and driven about a rotation axis (12), the rotary cutting tool including at least one cutting element (18, 18', 18''), the cutting device unit also having at least one fixed cutting tool (20), wherein the fixed cutting tool (20) is supported in a manner rotatable about the rotation axis (12) and configured to be fixed in at least two different positions that the fixed cutting tool (20) can rotate about the rotation axis (12).

26. The machine tool according to claim 24 or 25, characterized in that, The rotary cutting tool (16) is a cutting disc.

27. The machine tool according to claim 24 or 25, characterized in that, The fixed cutting tool (20) is the corresponding cutting disc.

28. A machine tool system having at least one tooling device and a machine tool (500) according to claim 20.

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