Machine tool

Abstract

This invention relates to a machine tool having a tool receiving device rotatable about an output axis, wherein the tool receiving device is designed to hold a tool on the machine tool such that the output axis and the tool rotation axis are substantially coincident, wherein the tool receiving device has at least one carrying device and a clamping device movable relative to the carrying device, wherein the carrying device has at least one torque transmission region arranged spaced apart from the output axis for transmitting driving force to the tool. It is proposed that the carrying device and the clamping device are configured to extend through a slot of the tool and clamp the tool by means of the clamping device movable substantially in a radial direction along the output axis A.

Description

[0001] This application is a divisional application of application No. 201780051730.6 (international application No. PCT / EP2017 / 070312), filed on August 10, 2017, entitled "Machine Tool". Technical Field

[0002] The present invention relates to a machine tool, particularly a hand-guided machine tool, preferably an angle grinder, having a tool receiving device movable about an output axis, wherein the tool receiving device is designed to hold a tool device, particularly an insert tool, on the machine tool such that the output axis and the tool rotation axis are substantially coincident, wherein the tool receiving device has at least one carrying device and a clamping device movable relative to the carrying device, wherein the carrying device has at least one torque transmission region arranged spaced apart from the output axis for transmitting driving force to the tool device. Background Technology

[0003] DE 10 2012 007 926 A1 discloses a force-driven handheld machine tool having a housing, a spindle head, a tool spindle driveable about its longitudinal axis, a clamping device, and fastening elements. The tool spindle has a tool-side end with a holding section for the tool to be driven. The clamping device has a clamping configuration in which the tool can be secured to the tool spindle by means of the fastening elements, and a release configuration in which the tool can be released. The clamping device is configured to switch between the clamping and release configurations by means of a balanced adjusting movement. Summary of the Invention

[0004] The objective of this invention is to improve handheld machine tools with simple structural measures.

[0005] The task is solved by a machine tool, particularly a hand-guided machine tool, preferably an angle grinder, having a tool receiving device rotatable about an output axis, wherein the tool receiving device is designed to hold a tool, particularly an insert tool, on the machine tool such that the output axis and the tool rotation axis are substantially coincident, wherein the tool receiving device has at least one carrying device and a clamping device movable relative to the carrying device, wherein the carrying device has at least one torque transmission area spaced apart from the output axis for transmitting driving force to the tool.

[0006] According to the invention, the carrying device and the clamping device are provided with slots that extend through the tool device, particularly through the entire material thickness of the tool device, so as to clamp the tool device by means of the clamping device, which is substantially movable in the radial direction along the output axis. Preferably, the axis of motion of the clamping device, especially the pivot axis, is transverse to, and at least substantially perpendicular to, the output axis.

[0007] The present invention will be described below primarily using hand-guided machine tools, particularly those having a tool receiving device that rotates about an output axis. However, the limitations of the views should not be considered as limitations on the applicability of such machine tools. Instead of the term "tool receiving device," the term "tool receiving element" will be used hereafter – for simplicity. However, this should also not be considered a limitation.

[0008] A machine tool, especially a handheld machine tool, is a device having one or more drive motors and, if necessary, one or more transmission devices, and at least one output shaft having an output axis—understood in a geometrical sense. A tool receiving device is arranged indirectly or directly on the output shaft. The tool receiving device is one or more components that apply torque to the tool, especially the tool device, by means of which the torque is applied. The tool receiving device preferably—especially in the case of a hand-guided machine tool, especially a handheld machine tool—also holds the tool in place, such that the tool, especially the tool device, is both held in place and loaded to output torque solely through the tool receiving device. The terms output torque and output-based terms refer to the torque transmitted from the machine tool, especially a handheld machine tool, or a corresponding component of the machine tool, especially a handheld machine tool, to the tool, especially the tool device. The term driving torque refers to the torque received by the tool, especially the tool device. The tool device can be configured as an insert tool for grinding, splitting, or other forms of machining on a workpiece.

[0009] Hand-guided machine tools, especially handheld machine tools, have a carrying device, particularly a handle and the like, through which the machine tool, especially handheld machine tool, and the tool, especially the tool assembly, fastened thereto can be guided by operating force. Typically, hand-guided machine tools, especially handheld machine tools, are equipped with an electric drive motor, but other construction methods are also known, such as machine tools powered by an internal combustion engine, hydraulic or pneumatic operation, and can be applied within the framework of this invention.

[0010] Suitable machine tools include both stationary machine tools, such as benchtop circular saws corresponding to applications DE 102010042016 or US2062969 A, and non-stationary machine tools, such as handheld circular saws corresponding to application DE 3740200 A1, angle grinders corresponding to application DE102014210915 A1, or backpack brush cutters corresponding to application DE19616764 A1. Alternatively, hand-guided motor saws are also suitable. Non-stationary machine tools can be implemented in a hand-guided or handheld manner. The machine tool according to the invention is preferably constructed as an angle grinder.

[0011] The machine tool according to the invention, particularly the handheld machine tool, enables the tool assembly, especially for high-speed rotating applications, to be received or clamped without tools, thus eliminating the need for additional, particularly removable, safety elements, such as fastening screws, to secure the tool assembly to the tool receiving device. The machine tool is therefore configured to connect or clamp the tool assembly to the tool receiving device in a particularly quick and convenient manner, allowing the operator to change tools exceptionally quickly. It also eliminates the need for additional tools, such as wrenches or screwdrivers, to connect or detach the tool assembly from the machine tool.

[0012] The clamping device, in particular, can increase the clamping force acting on the tool device due to the centrifugal force acting on the clamping device as the rotational speed of the tool receiving device increases. Thus, the clamping force acting on the tool device increases with increasing rotational speed. This is especially noticeable in the case of high-speed rotating machine tools that are driven by rotation.

[0013] The term “movable” should be understood in particular as being supported in a movable manner and / or preferably in a manner that allows it to pivot about an axis of rotation.

[0014] The tool receiving device can be fixedly connected to the machine tool. However, the tool receiving device can also be detachably fastened to the output shaft, output spindle, or the like.

[0015] The clamping device may have at least one, and especially at least two, hook devices. Preferably, the hook device should be understood as a rotatable, pivotable, or movable device having at least one working surface for transmitting the clamping force to the tool device.

[0016] When the clamping device is implemented with at least two hook devices, the at least two hook devices are movable relative to each other, especially pivotable about a pivot axis, such that they are movable in the radial direction along the output axis. Preferably, these hook devices have a common axis of motion, especially a common pivot axis. However, it is also conceivable that the hook devices have different axes of motion, especially pivot axes that extend at least substantially parallel to each other. The axes of motion of the clamping device, especially the hook devices, and especially the pivot axes, preferably extend in a plane that extends transversely to, and especially at least substantially perpendicular to, the output axis. Preferably, the axes of motion of the clamping device, especially the pivot axes, constitute the rotation axis of the clamping device.

[0017] The at least two hook devices can be implemented to be movable relative to each other, especially about a pivot axis in an angle range of up to 50°, preferably up to 40°, preferably up to 30°, and particularly preferably up to 20°.

[0018] The clamping device, or the at least two hook devices, may be present in at least two states, namely, a tightened state or a loosened state.

[0019] In the secured state, the hook device extends radially away from the output axis, particularly such that the hook devices occupy the maximum radial extension relative to each other in the extended state. In the secured state, the clamping device can be configured to form-lock and / or force-lock the tool device along the axial direction of the output axis. In the secured state, the hook device is preferably connected to, and particularly engaged with, the tool device, especially based on the movement of the hook device along the radial direction of the output axis or about the movement axis of the clamping device. Here, the tool device can be held on the machine tool in a manner that allows it to be received in form-lock and / or force-locked manner by means of the hook device. In the secured state, the tool device is form-locked to the tool receiving device along the axial direction of the output axis. The carrying device can protrude relative to the clamping device, and particularly the holding device, along the axial direction of the output axis in the secured state. The carrying device can limit the axial extension of the tool receiving device in the secured state.

[0020] In the detached state, the clamping device, especially the at least two hooks, retracts radially along the output axis, such that the clamping device, especially the at least two hooks, has a maximum radial extension dimension, at least partially, along a direction extending at least substantially perpendicular to the output axis, which is smaller than the minimum radial extension dimension of the tool device's slot. The clamping device, especially the hooks, can protrude relative to the carrying device in the axial direction along the output axis in the detached state. The clamping device, especially the hooks, can limit the axial extension dimension of the tool receiving device in the detached state.

[0021] Preferably, the clamping device, especially the at least two hook devices, has a maximum radial extension dimension—which, in the detached state, is smaller than the minimum radial extension dimension of the tool device's slot—arranged in an axial section of the clamping device within the area of ​​the tool receiving device. This axial section protrudes or extends freely along the axial direction of the output axis and is designed to be enclosed by the tool device's slot. Preferably, this axial section—where the maximum radial extension dimension of the clamping device is arranged—is not formed by the following axial section of the clamping device, which does not protrude or is not enclosed or can be enclosed by the tool device or machine tool 360° in a plane. The clamping device, especially the at least two hook devices, can be understood as "protruding" when it protrudes or protrudes relative to a placement area for axially placing the tool device, which limits the movement of the tool device along the axial direction of the output axis in the tightened and / or detached states. The axial section can be considered as an axial shoulder of the clamping device that protrudes relative to the carrying device in the detached state.

[0022] With the clamping device in a detached state, the tool device can be placed onto the tool receiving device in at least one or at least two steps.

[0023] The tool receiving device may have a first placement area and a second placement area. The first placement area may define the axial extension dimension of the carrying device. The first placement area may define the axial extension dimension of the tool receiving device in a secured state. The second placement area may surround the first placement area, particularly in a plane, by 360°. These placement areas extend at least substantially radially along the output axis and circumferentially about the output axis. The first and second placement areas may correspondingly have first and second, particularly flat, placement surfaces. The first placement surface is spaced apart from the second placement surface along the axial direction of the output axis and is particularly parallel to it. These placement surfaces define at least one torque transmission area. These placement surfaces are oriented away from the tool receiving device.

[0024] During the placement of the tool device in a single step, the slot of the attachment device can have a boundary profile defining the slot, which is flush with the outer contours of the clamping device and the carrying device, so that the placement of the tool device along the axial direction of the output axis can be achieved in this single step. The tool device can then be supported on the clamping device, particularly the hook device. By applying an operating force along the axial direction of the output axis to the tool device, the tool device can move the clamping device, particularly the hook device, from a detached state to an operating state. The tool device can then be received by the tool receiving device. In the secured state, the tool device can be supported in a second placement area. In the secured state, the tool device is supported along the axial direction of the output axis on the tool receiving device, particularly the carrying device, and especially on the second support surface of the tool receiving device.

[0025] In the placement process of the tool device in at least two steps, in the first placement step, the slot of the attachment device of the tool device may have a boundary profile defining the slot, which is oriented in a particularly torsional manner about the output axis when the tool device is placed on the tool receiving device in the first placement step, such that the boundary profile is not flush with the outer contours of the clamping device and the carrying device. The tool device is here supported on the carrying device in the axial direction along the output axis and pre-aligned or roughly aligned in the radial direction by the clamping device. The tool device may here be supported on the first placement area. The attachment device is preferably rotatable about the output axis until the torque transmission area is shaped to engage.

[0026] The tool can rotate about the output axis in such a way that the boundary contour of the slot is flush with the outer contour of the clamping device and the carrying device.

[0027] Preferably, in the second placement step following the first placement step, the tool device can be guided along the axial direction of the output axis along the carrying device, such that the slot of the tool device at least partially, and especially completely, surrounds the clamping device and the carrying device. This allows for precise centering of the tool device, enabling it to be torsionally arranged on the tool receiving device relative to the tool receiving device, especially the carrying device and / or the clamping device, about the output axis. The tool device can be supported on the clamping device. Corresponding to the first placement step, the tool device can then be loaded with an axial operating force to move the clamping device, especially the hook device, from a loosened state to an operating state. The tool device can then be supported in the second placement area to form a particularly secure state.

[0028] The tool device is preferably placed at a location provided for clamping the card by means of the clamping device, especially in the first and / or second placement area.

[0029] The terms “output axis” and “tool rotation axis” preferably refer to the imaginary geometric rotation axis of the tool receiving device and / or the output axis of the machine tool, and the imaginary rotation axis of the tool device in its arrangement, especially fixed on the tool receiving device, respectively.

[0030] The torque transmission region of the drive mechanism has at least one output surface arranged spaced apart from the output axis, and the output surface correspondingly has a plurality of facets. The term "output surface" refers to a surface that is at least partially in contact with the tool mechanism, either indirectly or directly, at least in the fastened state of the tool mechanism, to transmit the output torque to the tool mechanism. The term "facet" is particularly geometrically understood as a point on the surface of the output surface.

[0031] The torque transmission area is configured to transmit the driving torque of the machine tool to the tool assembly in a tool arrangement, particularly when fixed to a clamping device. Conversely, the torque transmission area can also be configured to transmit torque, especially braking torque generated when braking the tool movement, from the tool assembly to the machine tool.

[0032] The dependent claims provide further, objective-compliant extensions to the machine tool according to the invention.

[0033] A desirable feature is that the tool receiving device has an axial opening configured to receive a clamping device. The opening can surround the output shaft and / or the clamping device 360° in a plane, particularly a radial plane. The radial plane should be understood as a plane extending radially along the output shaft. Preferably, the tool receiving device is at least partially arranged on the output shaft of the machine tool, particularly at least partially arranged in the internal region of the output shaft of the machine tool, which is constructed as a hollow shaft. The opening can be configured as a slot in the housing of the machine tool. The clamping device can protrude axially relative to the opening. The opening can be at least partially defined by a second mounting area. The opening can receive or support the clamping device torsionally around the output shaft. The opening can be elongated in the radial plane. Thus, the tool receiving device can be implemented in a particularly compact manner.

[0034] It is also possible that the carrying device is configured by at least one carrying claw, particularly serving as a guide claw. The carrying device can, in particular, limit and / or at least partially arrange the opening in the radial direction along the output axis. Preferably, the carrying device can be provided with a clamping device for guiding the tool receiving device, especially when moving from a loose state to a tight state or vice versa, especially when moving at least partially in the radial direction. Movement should be understood, in particular, as relative movement. The opening can be substantially rectangular. Preferably, the at least one carrying claw serving as a guide claw can limit the opening radially along the main extension dimension of the rectangular opening. The opening can surround the output axis 360° in a plane. Preferably, the opening is arranged between at least two carrying claws of the carrying device in a direction extending transversely to, and especially at least substantially perpendicular to, the output axis. Preferably, the carrying claw limits the opening at least in a direction extending transversely to, and especially at least substantially perpendicular to, the output axis. Preferably, the clamping device is arranged at least partially in a direction extending transversely to, and especially at least at least substantially perpendicular to, the output axis between the at least two carrying claws of the carrying device.

[0035] Therefore, the carrying device can take on the additional function of guiding the clamping device, thus ensuring the compact implementation of the tool receiving device.

[0036] "Towards / away from orientation" should be understood in context as the orientation or orientation of a normal in space, such as in a three-dimensional coordinate system, which describes a vector perpendicular to a tangential plane about a reference point, reference surface, or reference device.

[0037] Furthermore, the carrying device also has at least two carrying claws arranged parallel to each other and spaced apart. Preferably, the carrying claws are torsionally connected to the output shaft. Preferably, the carrying claws can be driven to rotate about the output axis, especially together with the output shaft.

[0038] Preferably, the two driving claws are evenly distributed around the output axis, particularly symmetrically, for example, rotationally symmetrically. Preferably, the driving claws are point-symmetric relative to each other about a point arranged on the output axis. This allows for better force distribution. However, it is also conceivable that the driving claws are configured asymmetrically about at least one point arranged on the output axis, such that the driving claws are mirror-symmetric about at least one plane including the output axis, etc.

[0039] Ideally, the clamping device has at least one clamping surface for transmitting axial force to the tool device. Preferably, the clamping surface is configured to at least axially secure the tool device to the tool receiving device in the clamped state of the clamping device, particularly based on form-locking and / or force-locking connections. Preferably, the clamping surface is configured to apply a fixing force acting in a direction at least substantially parallel to the output axis to the tool device in the clamped state of the clamping device. The clamping surface may be constructed flat. The clamping surface may be constructed to be at least partially curved.

[0040] Furthermore, the tool receiving device has a flat support surface, particularly extending orthogonal to the output axis, which is configured to support the tool device axially. Preferably, the tool device, particularly with at least one abutting surface, rests against the support surface, at least when the tool device is arranged on the tool receiving device. The tool device can rest against the support surface in a tightened state. Preferably, the tool device can be pressed against the support surface by means of a clamping device, particularly in the tightened state of the clamping device. It is also desirable that the tool receiving device has a flat support surface, which is arranged radially along the output axis and spaced apart from the clamping device, particularly the clamping surface of the clamping device. The support surface can particularly extend substantially orthogonal to the output axis. The support surface can form a second mounting surface of a second mounting area. This achieves flat support of the tool device at and / or on the tool receiving device, thereby enabling the tool receiving device to operate reliably with the machine tool while adhering to the required tool device design tolerances. This allows for exceptionally high angular accuracy of the tool device relative to the tool receiving device, thereby reducing vibration and unacceptable jitter of the tool device during operation by a machine tool.

[0041] The support surface can at least partially define the opening of the tool receiving device in the radial direction along the output axis. Preferably, at least one sealing element of the tool receiving device is arranged on the opening. The sealing element is preferably provided for sealingly abutting against the inner wall of the opening defining the hollow shaft of the output shaft and sealingly abutting against the carrying device and / or clamping device. Preferably, the sealing element is provided to at least maximize the prevention of contaminants from entering the tool receiving device, especially the hollow shaft of the output shaft, through the opening. Preferably, the sealing element at least partially, especially completely, surrounds the tool receiving device, especially the carrying device and / or clamping device, in the circumferential direction. The circumferential direction preferably extends in a plane that extends at least substantially perpendicular to the output axis.

[0042] Furthermore, it is desirable that the carrying device has a maximum radial extension dimension along a direction extending transversely to, and especially at least substantially perpendicular to, the output axis, which is greater than the maximum radial extension dimension of the clamping device in the clamped state along the same direction. The maximum radial extension dimension of the carrying device is preferably configured as a diameter. The maximum radial extension dimension of the carrying device preferably has a value of less than 35 mm, preferably less than 30 mm, and particularly preferably about 29 mm, excluding manufacturing tolerances. The maximum radial extension dimension of the clamping device in the clamped state preferably extends along a direction extending transversely to, and especially at least substantially perpendicular to, the output axis and has a value of less than 34 mm, preferably less than 29 mm, and particularly preferably exactly 28.5 mm, excluding manufacturing tolerances. Preferably, the maximum radial extension dimension of the clamping device in the clamped state is arranged within a maximum diameter of 28.5 mm around the output axis, or preferably has a value of 28.5 mm. The clamping device may have a circumferential surface that at least partially limits the clamping device, particularly the at least one hook device, in the radial direction of the output axis. The circumferential surface of the clamping device may protrude relative to the carrying device in the axial direction of the output axis in the detached state. The circumferential surface of the clamping device may be angled relative to the output axis in the detached state, such that the distance between the circumferential surface and the output axis decreases or tapers in the axial direction of the output axis from the tool receiving device or the machine tool. This allows for pre-alignment of the tool device during placement on the tool receiving device, making it particularly advantageous to place the tool device on the machine tool. The circumferential surface of the clamping device may form an angle relative to the output axis in the detached state, which is 5° or more, particularly 10° or more, preferably 15° or more, preferably 20° or more, particularly preferably 25° or more and / or 60° or less, particularly 50° or less, preferably 40° or less, preferably 35° or less, particularly preferably 30° or less. The circumferential surface of the clamping device may be arranged parallel to the output axis in the tightened state. In particular, the maximum radial extension of the carrying device can be greater than the maximum radial extension of the clamping device about the output axis. Preferably, the maximum radial extension of the carrying device in the radial direction along the output axis is limited by the carrying boundary circle. Preferably, the maximum radial extension of the clamping device in the radial direction along the output axis is limited by the clamping boundary circle. The carrying boundary circle preferably has a maximum diameter that is larger than the maximum diameter of the clamping boundary circle, especially up to 5%, preferably up to 3%, and preferably up to 1%. These circles are concentric about the output axis in at least one state. Thus, the clamping device can be protected from damage, for example, when the tool receiving device collides with the workpiece during operation of the machine tool, in a particularly advantageous manner.

[0043] The tooling is preferably centered by means of the maximum diameter of the carrying device, which is such that the slot of the tooling is preferably at least approximately equal to, and in particular, exactly equal to, the maximum diameter of 29 mm, except for manufacturing tolerances, so as to achieve precise tolerances and ensure good concentricity.

[0044] Furthermore, it is desirable that the clamping device protrudes relative to the carrying device in the detached state of the tool receiving device along the axial direction of the output axis in the direction oriented away from the machine tool. The clamping device, in particular, can protrude further relative to the carrying device in the detached state of the tool receiving device, especially the clamping device, along the axial direction of the output axis in the direction oriented away from the machine tool than in the secured state of the tool receiving device, especially the clamping device. Preferably, the tool receiving device, especially the clamping device, can be implemented or arranged in a conical shape, at least substantially conical, within a conical envelope that at least partially surrounds or defines the clamping device, especially such that the tool device is first coarsely centered along the axial direction of the output axis by means of the clamping device and then finely centered by means of the carrying device during placement. Especially along the axial direction, the maximum radial extension of the clamping device in the detached state can at least partially correspond to a value of 22 mm, especially corresponding to a diameter of 22 mm of the circle extending around the output axis, so that the insertable tool can be pre-centered. This allows the tool assembly to be placed onto the carrying device of the tool receiving device along the axial direction of the output axis during placement, and pre-aligned, or coarsely aligned, in the radial direction by a clamping device protruding along the axial direction of the output axis. Alignment should be understood in particular as circumferential alignment around the output axis.

[0045] Furthermore, to achieve the desired effect, the torque transmission area of ​​the driving device has, in particular, straight or curved, output edges and / or, in particular, flat or curved, output surfaces. Thus, the output surfaces and / or output edges can contact the torque receiving area of ​​the tool device in a particularly advantageous manner, especially in point contact, preferably line contact, and most preferably surface contact. The output surfaces can be oriented, in particular, oriented circumferentially about the output axis.

[0046] Furthermore, in accordance with the objective, the at least one torque transmission region, particularly the output surface and / or output edge, is angled against the direction of rotation of the tool receiving device during machine tool operation. Preferably, the output surface and / or output edge, particularly in a plane extending at least substantially perpendicular to the output axis, forms an angle with a straight line intersecting the output axis and the output surface and / or output edge at least at one point, particularly with the radial direction, an angle particularly less than 80°, preferably less than 60°, and particularly preferably less than 45°. This reduces damage based on collisions with the workpiece.

[0047] Furthermore, the carrying device also possesses at least two torque transmission regions, each having an output edge and / or output surface, oriented apart from each other, particularly with respect to a plane including the output axis, and arranged substantially parallel to each other. Preferably, the torque receiving regions are arranged relatively spaced apart from each other with corresponding drive edges and / or drive surfaces circumferentially extending about the tool's rotation axis, wherein, in particular, the minimum circumferential spacing between torque receiving regions, especially between the drive edges and / or drive surfaces of the torque receiving regions, is particularly at least 10%, preferably at least 20%, and particularly preferably less than 60% of the total circumference of the first boundary circle.

[0048] It is also proposed that the output edge and / or output surface bend at an angle relative to the plane extending through the axial and radial directions of the output axis along the circumferential direction of the output axis and / or the radial direction of a radial axis formed around the output axis, particularly up to 50°, preferably up to 40°, more preferably up to 30°, and especially preferably up to 25°. Preferably, the output edge and / or output surface form an angle with the plane extending through the output axis and in a direction transverse to, and especially at least substantially perpendicular to, the output axis, and this angle is particularly 50° or less, preferably 40° or less, more preferably 30° or less, and especially preferably 15° or more. When the output surface and / or output edge are arranged at an angle relative to the plane extending through the output axis and in a direction transverse to, and especially at least substantially perpendicular to, the output surface and / or output edge can be minimized along the direction at least substantially perpendicular to the output axis without reducing the maximum extension of the output surface itself, so that the extension of the drive device can be implemented in a particularly compact manner. When the output surface is folded at an angle around the output axis in the circumferential direction, the radial extension dimension of the output surface and / or output edges can be minimized without reducing the extension dimension of the output surface, allowing the extension dimension of the carrying device to be implemented in a particularly compact manner. When the output surface is folded at an angle in the radial direction constituting the radial axis of the output axis, the tool device can be mounted on the tool receiving device in the axial direction in a particularly simple manner, allowing the maximum extension dimension of the output surface in the axial direction of the output axis to be implemented towards the machine tool.

[0049] The output surface can be angled against the direction of rotation of the tool receiving device during machine tool operation. Preferably, the output surface is inclined relative to the circumferential direction extending about the output axis. In particular, each output surface forms an angle different from 90° with the circumferential direction.

[0050] A tool receiving device, especially a clamping device, can meet the objective requirements by having an operating mechanism that, when operated axially with an operating force, is configured to switch the clamping device from a loose state to a tight state. In the loose state, the tool can be removed from the tool receiving device, and in the tight state, the tool is secured to the tool receiving device.

[0051] The operating device can be operated by means of a tool device, in which the tool device is loaded with an operating force such that the tool device applies the operating force to the clamping device in the axial direction of the tool axis or output axis, so as to change the clamping device from a loose state to a tight state.

[0052] The clamping device preferably has a clamping slot.

[0053] Furthermore, in accordance with the objective, the clamping device has at least one hook device with at least one radial clamping slot configured to clamp the tool device in a tightened state at least along the axial direction of the drive axis and to release it in a loosened state. The clamping slot can be configured to at least partially receive the tool device. The clamping slot can be configured to at least partially receive the tool device in the loosened state. The clamping slot can be configured to receive and hold the tool device on a tool receiving device in the tightened state. The clamping slot can at least partially protrude or project relative to the carrying device along the output axis in the axial direction in the loosened state. The clamping slot can protrude relative to the carrying device in the loosened state such that the attachment device of the tool device is received by the clamping slot. The clamping slot can be angled relative to the output axis in the loosened state such that the attachment device of the tool device can be at least partially received in the clamping slot in a form-locking manner, particularly along the radial direction of the output axis. The clamping slot can be configured as a circumferential slot. The clamping slot can be constructed such that, in the detached state, the clamping slot is at least partially open along the axial direction of the output axis to receive the tool device, especially the attachment device of the tool device.

[0054] The clamping device may have at least two hooks, each having at least one radial clamping slot. The clamping slots may extend substantially radially along the output axis in the tightened state. Preferably, the tool device is at least partially engaged in the clamping slot, at least when the tool device is secured to the tool receiving device by means of the clamping device. This provides a form-locking connection between the tool device and the machine tool in the tightened state in a particularly simple manner. The clamping device may have at least one clamping surface for transmitting axial force to the tool device, especially the attachment device of the tool device, in the tightened state. Preferably, the clamping surface contacts the tool device at least partially in point contact, preferably in line contact, and particularly preferably in surface contact. The clamping surface may be flat or, particularly at least partially, curved.

[0055] The contact area of ​​point, line, or surface contact depends on the shape and type of the torque transmission area and their combined effect. In the case of a point contact area, the contact area has a circular or elliptical extension. Point contact areas are particularly insensitive to inaccurate positioning of the tooling relative to the machine tool, which can be caused, for example, by tolerances during tooling manufacturing. In the case of a line contact area, the contact area has a large extension along the contact line and a small extension transversely to the contact line. Line contact areas provide a larger contact area than point contact areas and can transmit a larger driving force from the machine tool to the tooling. Surface contact areas provide a larger contact area than line contact areas, especially a larger contact surface, and thus can transmit a larger driving force from the machine tool to the tooling. Compared to point contact, line and surface contact require higher precision both in manufacturing the torque transmission area and in positioning the tooling on the machine tool. Torque transmission areas can be coordinated so that surface or line contact occurs only when transmitting nominal driving force, for example, when the machine tool is operating at nominal power.

[0056] The clamping surface can be flat or curved. The clamping surface can be constructed in a clamping slot that is substantially radial. The clamping slot can be particularly constructed as a clamping recess or clamping indentation. The clamping surface extends substantially radially along the output axis. The clamping surface can be oriented toward the machine tool. The clamping surface can be oriented transversely to, and at least substantially perpendicular to, the output axis in the secured state of the tool receiving device.

[0057] Furthermore, it is possible to achieve the objective that the clamping device, in particular the at least one hook device of the clamping device, is pivotally supported about a rotation axis of the clamping device, which is arranged substantially orthogonally to the output axis, so that tool devices with attachment devices of different thicknesses can be clamped by means of the clamping device according to the pivot angle formed by the clamping surface of the clamping device, in particular, relative to the output axis. Thus, tool devices whose attachment device thickness, or material thickness, in the axial direction can be configured differently depending on the application and the requirements of the tool device can also be accepted.

[0058] Furthermore, it is proposed that the carrying device includes at least one assembly coding element, which is configured to cooperate with the tool assembly coding element of the tool device in the state where the tool device is arranged on the tool receiving device. Preferably, the at least one assembly coding element of the carrying device is configured to encode the arrangement or placement of the tool device on the tool receiving device, especially at or on the support surface. Preferably, the at least one assembly coding element of the carrying device is configured to encode the arrangement or placement of the tool device on the tool receiving device, especially at or on the support surface, according to the key-keyhole principle. Preferably, the at least one assembly coding element of the carrying device is integrally constructed with the carrying device, especially the carrying claw of the carrying device. However, it is also conceivable that the at least one assembly coding element of the carrying device is constructed independently of the carrying device, especially the carrying claw, and fixed to the carrying device, especially the carrying claw, by means of a connection structure deemed meaningful by a professional. Preferably, the assembly coding element is constructed as a mechanical assembly coding element, such as a slot, ridge, channel, connecting strip, etc. However, it is also conceivable that the assembly coding element is constructed as an electronic assembly coding element, such as an RFID chip, an NFC chip, a radio wave analysis processor, an electronic reader (barcode reader, QR code reader, etc.), or a combination of mechanical and electronic assembly coding elements. The tool assembly coding element of the tool device is preferably constructed correspondingly to the assembly coding element of the carrying device. When the assembly coding element is configured as a mechanical assembly coding element, the tool assembly coding element is also constructed as a mechanical tool assembly coding element, such as a notch, ridge, channel, connecting strip, etc. When the assembly coding element is configured as an electronic assembly coding element, the tool assembly coding element is also constructed as an electronic tool assembly coding element, such as an RFID chip, an NFC chip, a radio wave analysis processor, an electronic reader (barcode reader, QR code reader, etc.), or the like. Similarly, other configurations that are considered meaningful by those skilled in the art regarding the assembly coding element and the tool assembly coding element are also conceivable. Preferably, the tool receiving device includes multiple assembly coding elements, particularly at least two, preferably at least three, and especially preferably at least four. The tool device preferably includes the same number of assembly coding elements as the tool receiving device. However, it is also conceivable that the number of tool assembly coding elements in the tool device differs from, and is particularly greater than, the number of assembly coding elements in the tool receiving device. Preferably, the at least one assembly coding element of the carrying device is configured as an axial coding element, particularly an axial coding element that operates along a direction extending at least substantially parallel to the output axis. Preferably, the at least one assembly coding element of the carrying device is configured to encode the axial placement possibility of the tool device on the carrying device. With the configuration according to the invention, the misassembly of the tool device on the tool receiving device can be advantageously minimized. It can advantageously prevent the arrangement of tool devices unsuitable for the safe operation of the machine tool on the tool receiving device.It can advantageously, for example, prevent tooling devices intended for machine tools with small maximum speeds from being arranged on machine tools with large maximum speeds.

[0059] It is also proposed that the assembly coding element of the carrying device is arranged on at least one carrying jaw of the carrying device. Preferably, the assembly coding element arranged on the at least one carrying jaw of the carrying device is configured as a raised portion. Preferably, the raised assembly coding element has a primary orientation that points away from the output axis, particularly along a direction extending transversely to, and at least substantially perpendicular to, the output axis. However, it is also conceivable that the assembly coding element arranged on the at least one carrying jaw of the carrying device has other configurations that are considered meaningful by those skilled in the art. Preferably, the assembly coding element arranged on the at least one carrying jaw of the carrying device is arranged on an outer surface of the at least one carrying jaw, particularly away from the output axis. Preferably, the assembly coding element arranged on the at least one carrying jaw of the carrying device is arranged on an outer surface of the at least one carrying jaw that extends at least substantially parallel to the output axis. Alternatively or additionally, it is conceivable that the tool receiving device includes at least one assembly coding element arranged on a support surface of the tool receiving device. The assembly coding element arranged on the support surface of the tool receiving device can be configured as a mechanical or electronic assembly coding element. The configuration according to the invention reliably and advantageously minimizes the unsuitable arrangement of tool devices, especially at or on the tool receiving device. It also allows for a structurally simple configuration that enables assembly coding.

[0060] It is also proposed that the assembly coding element of the carrying device is arranged adjacent to the inner circumferential surface of the at least one carrying claw. Preferably, the assembly coding element arranged on the at least one carrying claw of the carrying device is arranged directly adjacent to the inner circumferential surface. Alternatively or additionally, it is conceivable that the assembly coding element arranged on the at least one carrying claw of the carrying device is arranged on the outer circumferential surface of the at least one carrying claw. Preferably, the surface of the assembly coding element arranged on the at least one carrying claw of the carrying device forms part of the inner or outer circumferential surface of the at least one carrying claw. With the configuration according to the invention, a simple configuration for realizing assembly coding can be achieved. Inappropriate tool device arrangements, especially those placed at or on the tool receiving device, can be reliably and advantageously avoided to the greatest extent possible.

[0061] Furthermore, it is proposed that the clamping device, particularly the at least one hook device of the clamping device, includes at least one assembly coding element. Preferably, the clamping device includes multiple assembly coding elements, particularly at least two. However, it is also conceivable that the clamping device has a different number of assembly coding elements arranged on the hook device than 1 and 2. Preferably, the at least one assembly coding element of the clamping device constitutes a fixed coding element, which is configured to encode the fastening of the tool device on the tool receiving device. Preferably, the at least one assembly coding element of the clamping device is configured to encode the fastening of the tool device on the tool receiving device according to the key-keyhole principle. The assembly coding element of the clamping device is preferably configured to at least minimize or prohibit the tool device from being fastened to the tool receiving device, particularly the support surface, by means of the clamping device when there is no corresponding assembly coding element on the tool device. When there is a corresponding assembly coding element on the tool device, it is preferable that fastening can be achieved based on the combined action of the assembly coding element of the clamping device and the corresponding assembly coding element of the tool device. It is conceivable that the tool receiving device has only one or more assembly coding elements of at least the carrying device or only one or more assembly coding elements of at least the clamping device. It is also conceivable that the tool receiving device, replacing or attached to the assembly coding element of the carrying device or the assembly coding element of the clamping device, has additional coding elements that enable coding of the arrangement of the tool device on the tool receiving device: for example, at least one coding element movable based on the arrangement of the tool device on the tool receiving device to release the arrangement of the tool device; at least one additional static coding element on the tool receiving device, for example, fitting into a slot on the tool device; at least one additional movably supported coding element, which is preferably movable after the suitable tool device is correctly arranged in the coding slot of the tool device, to, for example, unlock the start of the machine tool; or other coding elements deemed meaningful by a skilled professional. Preferably, the at least one assembly coding element of the clamping device is configured as a radial coding element, particularly as a radial coding element acting along a direction at least substantially perpendicular to the output axis. Preferably, the at least one assembly coding element of the clamping device is configured to code the radially acting fastening of the clamping device for securing the tool device to the tool receiving device. The fastening of the tool device by means of the clamping device can be advantageously coded using the configuration according to the invention. For example, in the event of an unsuitable configuration of the tool device—that is configured to lack an element corresponding to the at least one assembly coding element of the clamping device—the possibility of fastening can be prevented. Unsuitable tool devices can be reliably prevented from fastening to the tool receiving device.

[0062] It is also proposed that the assembly coding element of the clamping device is arranged in the claw, especially the clamping slot of the claw. Preferably, the at least one assembly coding element of the clamping device is integrally constructed with the claw. However, it is also conceivable that the at least one assembly coding element of the clamping device is constructed independently of the claw and fixed to the claw by means of a connection structure that is considered meaningful by a person skilled in the art. Preferably, the assembly coding element of the clamping device is arranged on the clamping surface of the clamping device, especially directly adjacent to the clamping surface, which at least partially defines the clamping slot. Preferably, the at least one assembly coding element of the clamping device is constructed as a raised portion. However, it is also conceivable that the at least one assembly coding element of the clamping device has other configurations that are considered meaningful by a person skilled in the art. The at least one assembly coding element of the clamping device can be arranged symmetrically or asymmetrically on the claw with respect to the intermediate plane, especially the plane of symmetry of the claw. Preferably, the intermediate plane, especially the plane of symmetry of the claw, extends at least substantially parallel to and / or includes the output axis. It is also conceivable that the at least one assembly coding element of the clamping device is arranged on the claw spaced apart relative to the intermediate plane, especially the plane of symmetry of the claw. A compact configuration can be advantageously achieved using the configuration according to the invention. It is advantageous to reliably protect the assembly coding elements of the clamping device from damage, particularly by arranging the at least one assembly coding element in the clamping slot of the pawl.

[0063] Furthermore, a machine tool system is proposed, comprising at least one machine tool according to the invention, the machine tool having a tool receiving device and further comprising a tool device that can be received in the tool receiving device, wherein the tool receiving device holds the tool device on the machine tool such that the output axis of the machine tool and the rotation axis of the tool are substantially coincident, particularly coaxial.

[0064] The at least one carrying device may in particular have at least one torque transmission region for transmitting torque circumferentially about the output axis to the tool device.

[0065] The tool assembly preferably includes a tool rotation axis and an attachment device with a slot for at least partially, particularly completely, surrounding the tool receiving device of the handheld machine tool in a circumferential direction about the output axis. Preferably, at least a carrying device and / or a clamping device of the tool receiving device, when arranged on the tool receiving device, at least partially engage with the slot of the attachment device. The carrying device is preferably arranged to at least partially abut against the edge region of the slot of the attachment device of the tool assembly, particularly when the tool assembly is arranged on the tool receiving device.

[0066] The tool assembly preferably has at least one torque receiving area that is radially spaced from the tool rotation axis.

[0067] Further preferably, the torque receiving region can at least partially limit the slot in the radial direction along the tool's rotation axis. Preferably, the torque receiving region of the tool device at least partially, and especially completely, limits the slot of the attachment device of the tool device.

[0068] Preferably, the carrying device and the clamping device are provided with slots for passing through the tool device and clamping the tool device with the tool receiving device by means of the clamping device which is movable in the radial direction substantially along the output axis.

[0069] Particularly preferred is that the clamping device can apply a force to the tool device in the area of ​​the clamping surface, wherein the force has at least one component in the axial direction along the tool rotation axis.

[0070] Preferably, the clamping device can be configured to prevent the tool device from accidentally detaching from the tool receiving device and to facilitate the replacement of the tool device.

[0071] Another objective is that the attachment device extends axially between the first attachment surface of the tool device and the second attachment surface opposite to the first attachment surface.

[0072] In particular, these attachment surfaces of the tool assembly are arranged orthogonally to the tool's axis of rotation.

[0073] Preferably, the spacing between the attachment surfaces, extending at least substantially parallel to the tool's rotation axis, constitutes the material thickness t of the attachment device.

[0074] Preferably, the at least one torque receiving region is arranged between the attachment surfaces of the tool assembly. Preferably, the driving surface of the limiting slot of the torque receiving region is arranged between the attachment surfaces of the tool assembly. Preferably, the driving surface of the torque receiving region is at least substantially parallel to the tool rotation axis. However, it is also conceivable that the driving surface of the torque transmission region is arranged at an angle relative to the tool rotation axis.

[0075] The first attachment surface can limit the attachment device along the output axis on the side facing the machine tool. The attachment surface can be implemented flat.

[0076] This allows for a particularly compact implementation of the tooling device along the axial direction.

[0077] Furthermore, in accordance with the objective, the attachment device of the tool assembly has at least two, and especially at least four, torque receiving regions arranged rotationally symmetrically about the tool's rotation axis. In particular, the tool receiving device has at least two, and especially at least four, torque transmitting regions arranged rotationally symmetrically about the drive axis. In particular, the torque receiving regions are constructed in a corresponding, and especially complementary, manner to the torque transmitting regions, such that they constitute a negative shape.

[0078] The torque transmission regions are arranged symmetrically around the output axis A at 90° angles, giving the tool four rotational positions through which it can be connected to the drive mechanism. This advantageously provides good operability. Preferably, the torque transmission regions are arranged with n-fold rotational symmetry about the output axis, especially at least four-fold. However, it is also conceivable that the torque transmission regions are arranged with n-fold rotational symmetry that is meaningful to a person skilled in the art, such as two-fold, three-fold, five-fold, etc., rotational symmetry about the output axis.

[0079] Furthermore, in line with the objective, the torque receiving region extends at least segmentally between first and second radial distances relative to the tool rotation axis in the radial direction of the drive axis, and at least one of the segments is designed to transmit torque from the machine tool to the tool mechanism.

[0080] The torque applied by the machine tool can be transmitted to the tool device via the tool receiving device in a particularly advantageous manner.

[0081] It is proposed that the tool receiving device has a flat, particularly annular, support surface, which is provided with at least one abutment surface and / or a first attachment surface for supporting the tool device in the axial direction, such that the support surface extends in the radial direction of the tool rotation axis between a radial inner distance and a radial outer distance relative to the output axis.

[0082] The radial inner spacing defines the inner radius of the support surface. The radial outer spacing defines the outer radius of the support surface.

[0083] Preferably, the attachment device of the tool assembly has at least one clamping wing that at least partially limits the slot in the radial direction, the clamping wing being limited substantially in the radial direction of the tool's rotation axis by a first boundary edge located on a first, particularly smallest, boundary circle about the tool's rotation axis.

[0084] Preferably, the clamping wing of the tool device, especially the first boundary edge of the clamping wing, protrudes radially inward relative to the support surface in the radial direction of the output axis when the tool device is fastened to the machine tool, especially up to 2 mm, preferably up to 1 mm, most preferably up to 0.6 mm, particularly preferably up to 0.1 mm, and / or especially at least 0.5 mm, preferably at least 0.9 mm, most preferably at least 1 mm, such that there is no support material for supporting the clamping wing in this area.

[0085] The clamping wing should not be supported radially on the support surface, especially not fully supported, so that the clamping wing can at least partially bend elastically in the axial direction. Preferably, the maximum reference parameter D of the clamping wing, equivalent to the spring stiffness, is 400,000 N / mm or less. Preferably, the maximum reference parameter D of the clamping wing, equivalent to the spring stiffness, has a value in the range of 10,000 N / mm to 350,000 N / mm. The maximum reference parameter D, equivalent to the spring stiffness, is preferably derived from the following relationship:

[0086] F = Dz, where...

[0087] Wherein, L represents the maximum average extension dimension of the clamping wing between the first and second boundary circles, b represents the maximum tangential extension dimension of the clamping wing along the second boundary circle, and h represents the maximum material thickness of the clamping wing in the axial direction along the tool rotation axis a. The maximum material thickness h can preferably correspond to a value in the range of 0.5 mm to 1.6 mm. Preferably, the clamping wings, especially in the state where the tool device is arranged on the tool receiving device and has not yet been secured by the clamping device, are arranged at least sectionally spaced relative to the support surface in a direction extending at least substantially parallel to the output axis. In particular, in the axial direction, especially when viewed towards the machine tool along the output axis, no support surface is provided under the first boundary edge of the clamping wing.

[0088] It is also proposed that when the tool device is fastened to the machine tool, the at least one torque transmission area of ​​the tool receiving device is located, in particular, between a first orthogonal plane that forms a support surface of the tool receiving device and a second orthogonal plane that limits the carrying device in the axial direction.

[0089] The opening of the tool receiving device can be configured to receive, in particular at least partially, a clamping wing that covers the opening, and to allow the clamping wing to move along the axial direction of the output axis—particularly when viewed along the output axis toward the machine tool. It is advantageous to enable elastic deformation of the at least one clamping wing oriented toward the machine tool along the axial direction of the output axis.

[0090] The first and second orthogonal planes are spaced apart from each other by a distance T. Preferably, the distance T has a ratio of up to 500%, particularly up to 350%, preferably up to 200%, more preferably up to 150%, and especially preferably up to 100% relative to the material thickness t of the attachment device of the tool, said material thickness t being limited by the maximum axial extension dimension of the torque receiving region. It is particularly advantageous to connect the tool device to the carrying device, especially for centering on the carrying device.

[0091] Furthermore, it is proposed that the tooling device has a working area designed to act on a workpiece or workpiece assembly.

[0092] The working area can be arranged on the attachment so that, in the secured state, the working area protrudes relative to the attachment along the tool rotation axis in a direction oriented toward the tool receiving device of the machine tool.

[0093] Preferably, the working area can have a contact surface that, in the secured state of the tool assembly, forms a circumferentially force-locked support with the machine tool's support surface. It is conceivable that the working area is flexibly constructed. Preferably, the working area can be constructed of a different material than the attachment device, wherein, preferably, the elasticity of the material of the working area is greater than that of the material of the attachment device. The tool assembly can be clamped onto the working area, particularly in the axial direction. Thus, the working area can dampen vibrations of the tool assembly.

[0094] It is also possible that the attachment device has at least two clamping wings that are respectively bounded by a first boundary edge that forms a circumferential extension of the clamping wings along the tool's rotation axis in a radial direction substantially along the tool's rotation axis. This first boundary edge lies on a particularly smallest first boundary circle about the tool's rotation axis.

[0095] The first boundary edge can be composed of multiple boundary edge segments. Each boundary edge segment can be substantially located on the first boundary circle and defines the minimum radial extension dimension of the clamping wing. The boundary edge can have boundary edge segments in which the tool assembly coding element is arranged. Each clamping wing can have a first boundary edge.

[0096] The clamping device, especially at least one hook device of the clamping device, may have a circumferential surface that limits the radial extension dimension of the clamping device.

[0097] Preferably, the circumferential spacing between at least two adjacent first boundary edges along the tool rotation axis can be smaller than the spacing of the circumferential surface of the clamping device along the circumferential minimum extension dimension.

[0098] This allows for particularly advantageous rough alignment or pre-alignment of tools and devices during installation.

[0099] Furthermore, it is desirable that one, preferably multiple, and particularly preferably all, torque transmission areas of the machine tool are in at least segmental point contact, preferably line contact, and particularly preferably surface contact with the torque receiving area of ​​the tool assembly. Thus, the at least one torque transmission area can advantageously contact the tool assembly.

[0100] Furthermore, a tool device is proposed, comprising: at least one working area designed to act on a workpiece or workpiece assembly; at least one attachment device designed to receive driving force; and at least one connecting area designed to transmit the driving force of the machine tool from the attachment device to the working area via the connecting area, the tool device being used in machine tool applications.

[0101] Furthermore, it is proposed that the tool device has at least one tool assembly coding element, which is configured to cooperate with at least one assembly coding element of the tool receiving device when the tool device is arranged on the tool receiving device. Preferably, the assembly coding element is constructed as a mechanical assembly coding element, such as a slot, ridge, channel, connecting strip, etc. However, it is also conceivable that the assembly coding element is constructed as an electronic assembly coding element, such as an RFID chip, NFC chip, radio wave analysis processor, electronic reader (barcode reader, QR code reader, etc.), or a combination of mechanical and electronic assembly coding elements. Preferably, the tool assembly coding element of the tool device is configured to cooperate with at least one assembly coding element of the carrying device or at least one assembly coding element of the clamping device according to the key-keyhole principle, especially when the tool device is arranged on the tool receiving device. Preferably, the tool receiving device includes a plurality of assembly coding elements, especially at least two, preferably at least three, and particularly preferably at least four. The tool device preferably includes the same number of assembly coding elements as the tool receiving device. However, it is also conceivable that the number of tool assembly coding elements in the tool device is different from the number of assembly coding elements in the tool receiving device, especially larger. The at least one tool assembly coding element of the tool device can preferably be configured as or used as a stress-relieving cutout, especially in addition to the assembly coding function. Preferably, for assembling and / or fastening the tool device to the tool receiving device, mechanical and / or electronic analysis and evaluation of the at least one tool assembly coding element of the tool device are provided, especially by means of the at least one assembly coding element of the tool receiving device, so as to preferably release the assembly and / or fastening of the tool device on the tool receiving device. It is conceivable that the movement of the clamping device until the assembly and / or fastening is released can be prevented, especially mechanically and / or electronically. It is conceivable that the at least one tool assembly coding element of the tool device is provided for actuating, especially driving, the at least one assembly coding element of the tool receiving device, especially to enable the release of the assembly and / or fastening of the tool device on the tool receiving device. Alternatively or additionally, it is conceivable that the tool device has at least one additional tool assembly coding element, especially an imprint, which is provided for actuating, especially driving, the at least one additional assembly coding element of the tool receiving device, especially movably supported on, especially a support surface, so as to enable the release of the assembly and / or fastening of the tool device on the tool receiving device. The configuration according to the invention advantageously minimizes the possibility of incorrect tool assembly being mounted on the tool receiving device. It advantageously prevents the placement of tool assemblies unsuitable for the safe operation of the machine tool on the tool receiving device. It advantageously, for example, prevents the placement of tool assemblies intended for machine tools with low maximum speeds on machine tools with high maximum speeds. It advantageously achieves high operator safety.

[0102] It is also proposed that the at least one tool assembly coding element is arranged on the at least one clamping wing of the attachment device. When the tool assembly coding element arranged on the clamping wing is configured as a slot, the tool assembly coding element is preferably machined into the clamping wing in such a way that the resistance characteristic of the clamping wing to plastic deformation due to operating load is reduced, at most reduced to the load limit of the clamping wing. It is conceivable that at least one reinforcing element, such as a reinforcing rib, is arranged on the clamping wing. The at least one tool assembly coding element arranged on the clamping wing is preferably configured to cooperate with the at least one assembly coding element of the clamping device arranged on the pawl when the tool device is arranged on the tool receiving device. With the configuration according to the invention, reliable assembly coding or fastening coding based on the key-keyhole principle can be advantageously achieved.

[0103] It is also proposed that the at least one tool assembly coding element has a maximum extension dimension along the radial axis, which is at most equivalent to the maximum distance between the first and second boundary circles of the attachment device. Preferably, the at least one tool assembly coding element arranged on the clamping wing has a maximum extension dimension along a direction extending transversely to, and especially at least substantially perpendicular to, the tool rotation axis, particularly along the radial axis of the tool device, which is equal to or less than the maximum distance between the first and second boundary circles of the tool device. Reliable and secure coding can be advantageously achieved with the configuration according to the invention.

[0104] Furthermore, it is proposed that the at least one tool assembly coding element is arranged on the at least one clamping wing of the attachment device in an angular region between the drive edge and the coding edge of the attachment device. In particular, this angular region has a maximum extension of 90° or less, preferably 60° or less, and particularly preferably 40° or less. Reliable fastening coding can be advantageously achieved with the configuration according to the invention. It can advantageously minimize the risk of the tool assembly being fastened to an unsuitable machine tool. It can advantageously prevent operator injury due to the tool assembly being fastened to an unsuitable machine tool.

[0105] Furthermore, an application of the tool device implemented as an angle grinder is proposed, wherein the tool device can operate around the output axis at a speed of 4000 rpm or more, 10000 rpm or more, or 20000 rpm or more.

[0106] "Operable" should be understood in the context as being safe to operate, such that the application of the tool device in a machine tool, especially an angle grinder, corresponds to the same or at least approximately the same operating time or service life as the tool device, such as a heated grinding disc (Fiebschleifscheibe) used in an angle grinder application. The operating time or service life should be understood in particular as the typical service life of an angle grinder-driven grinding device in the field of grinding tools.

[0107] Furthermore, the tooling device has a working area that is particularly material-locked and / or form-locked to the bearing flange for machining workpieces. This allows for a particularly advantageous separation of functions.

[0108] The tool apparatus and / or machine tool system according to the invention are not limited to the applications and embodiments described above. In particular, the tool apparatus and / or machine tool system according to the invention may have a different number of elements, components, units, and method steps than those mentioned, in order to meet the working mode described herein. Furthermore, regarding the value range given in the disclosure, values ​​within the mentioned boundaries should also be disclosed and can be used arbitrarily. Attached Figure Description

[0109] Further advantages are described in the accompanying drawings, which illustrate embodiments of the invention. The drawings, description, and claims contain multiple combinations of features. Those skilled in the art may also view these features individually and generalize them into other meaningful combinations. The drawings show:

[0110] Figure 1 A cross-sectional view of the tool receiving device and tool assembly of the handheld machine tool according to the present invention.

[0111] Figure 2 Another cross-sectional view of the tool receiving device and the tool assembly in the secured state.

[0112] Figure 3 Another cross-sectional view of the tool receiving device in the detached state.

[0113] Figure 4 Figure 1 The view of the tool receiving device,

[0114] Figure 5a Figure 4 A view of a portion of the tool receiving device.

[0115] Figure 5b A partial view of the first alternative tool receiving device.

[0116] Figure 5c A partial view of the receiving device for the second alternative tool.

[0117] Figure 5d A partial view of the third alternative tool receiving device.

[0118] Figure 5e A partial view of the fourth alternative tool receiving device.

[0119] Figure 6 Figure 3A schematic diagram of the tool receiving device.

[0120] Figure 7 Figure 2 Schematic diagram of the tool receiving device

[0121] Figure 8 Another schematic diagram of the tool receiving device,

[0122] Figure 9 Another schematic diagram of the tool receiving device and the tool device.

[0123] Figure 10 Another schematic diagram of the tool receiving device and another tool device.

[0124] Figure 11 A view of an exemplary tool device, and

[0125] Figure 12 Received in Figure 1 The tool receiving device Figure 11 A view of the tool device.

[0126] Figure 13 Tool receiving device along Figure 1 A cross-sectional view of the first orthogonal plane.

[0127] Figure 14 A bearing flange in one embodiment of the tooling device,

[0128] Figure 15 Figure 11 An enlarged view of the clamping fins of the load-bearing flange.

[0129] Figure 16a The tool device and / or tool receiving device have a configuration with at least one spring-loaded safety and / or positioning element.

[0130] Figure 16b The tool device and / or tool receiving device has at least one spring-loaded safety and / or positioning element as an alternative to Figure 16a configuration,

[0131] Figure 17 Detailed diagram of the assembly coding element on which the claw and clamping device of the tool receiving device are arranged, and

[0132] Figure 18 A tabular list of possible arrangements and configurations of tool assembly coding elements for a tooling device.

[0133] In the following figures, the same components are given the same reference numerals. Detailed Implementation

[0134] Figure 1The diagram illustrates a machine tool system, or machining system, having a tool receiving device 213 and a tool assembly 11 that are rotatable about an output axis A. The tool receiving device 213 is designed to hold the tool assembly 11 on the machine tool 211 such that the output axis A and the imaginary geometric tool rotation axis a are substantially coincident.

[0135] Tools and equipment:

[0136] like Figure 1 , Figure 2 and Figures 9 to 12 As shown, the tool device 11 can be implemented in a flat and at least substantially disc-shaped manner. The tool device 11 has an imaginary tool rotation axis a, an attachment device 113 for connecting the tool device 11 to the tool receiving device 213 of the machine tool 211, and a working area 15. The attachment device 113 and the working area 15 are preferably constructed integrally with each other, and are particularly connected to each other in a material-locking manner.

[0137] The tool rotation axis a defines the center point of the tool device 11, about which the tool device 11 rotates during the operation of the machine tool 211. The attachment device 113 is arranged in the radially inner region of the tool device 11 about the tool rotation axis a.

[0138] The attachment device 113 has a slot 17 forming a material through-hole through the tool device 11, the slot extending along the axial direction of the tool rotation axis a through the entire material thickness t of the attachment device 113. The slot 17 can be configured to completely surround the carrying device 215 and the clamping device 217 of the tool receiving device 213. The slot 17 completely surrounds the tool rotation axis a in at least one plane, for example, in an orthogonal plane extending from the tool rotation axis a.

[0139] The attachment device 113 can be fastened to the tool receiving device 213 such that the output axis A of the drive shaft and the tool rotation axis a of the tool device 11 are substantially coincident.

[0140] The attachment device 113 also has four clamping wings 19 that extend radially along the tool rotation axis a and radially limit the slot 17 of the attachment device 113 at least partially, such as Figure 11 and 12 As shown. The clamping wings 19 are defined primarily along the radial direction of the tool rotation axis a by each of the first boundary edges 21, which lie on the first, particularly smallest, boundary circle 23 about the tool rotation axis a. Alternatively, the attachment device 113 may have fewer than four clamping wings 19, such as two clamping wings 19, or more than four clamping wings 19, such as six clamping wings 19.

[0141] The clamping wing 19 is primarily bounded by second boundary edges 25 along the radial and / or circumferential directions of the tool rotation axis a, the second boundary edges being located on the second, and particularly the largest, boundary circle 27 about the tool rotation axis a. Specifically, the diameter of the first boundary circle 23 is smaller than the diameter of the second boundary circle 27. Preferably, the first and second boundary edges 25 at least partially bound the notch 17 along the radial direction of the tool rotation axis a. The first boundary circle 23 is arranged concentrically with the second boundary circle 27 about the tool rotation axis a. The first diameter of the first boundary circle 23 is approximately 22 mm, thereby adapting the tool assembly 11 to conventional hand-held machine tools, particularly angle grinders, ensuring backward compatibility. Alternatively, the first diameter of the first boundary circle 23 can be smaller than 22 mm, allowing the tool assembly 11 to also be adapted to smaller conventional hand-held machine tools, particularly angle grinders.

[0142] The second boundary edge 25 can be designed to center and support the tool device 11 in the radial direction.

[0143] The first boundary edge 21 can be bent around the tool rotation axis a, corresponding to the arc direction of the boundary circle 23. The second boundary edge 25 can be bent around the tool rotation axis a, corresponding to the arc direction of the boundary circle 27.

[0144] The attachment device 113 has a torque receiving region 40. The torque receiving region 40 has a particularly straight or curved drive edge 40a and / or a particularly flat or curved drive surface 40b. Thus, the torque receiving region 40 of the tool device 11 can contact the torque transmission region 219 of the tool receiving device 213, particularly in point contact, preferably in line contact, and most preferably in surface contact. The torque transmission region 219 is arranged spaced apart from the tool rotation axis a.

[0145] The torque receiving region 40 of the attachment device 113 is configured to transmit driving force from the machine tool 211 to the tool device 11. The torque receiving regions 40 are arranged axially along the tool rotation axis a between slots 17 extending through the entire material thickness t of the tool device 11. Each slot 17 has at least four torque receiving regions 40, which are arranged rotationally symmetrically about the tool rotation axis a, particularly n-fold rotationally symmetrical. However, it is also conceivable that the tool device has a different number of torque receiving regions 40 than four, such as two, three, or more than four.

[0146] The drive surface 40b, particularly the drive surface region of the drive surface 40b, is provided for providing a form-locking and / or force-locking connection with the tool receiving device 213 of the handheld machine tool 211, particularly enabling the tool device 11 to be rotated. The drive surface 40b is defined by at least the drive edge 40a along the axial direction of the tool rotation axis a. At least the drive surface region of the drive surface 40b is implemented in a flat manner.

[0147] The driving surface 40b is angled relative to the radial direction of the radial axis r constituting the tool rotation axis a, especially up to 30°, for example 25°, as... Figure 11 and 12 As shown.

[0148] The attachment device 113 has a first attachment surface 49 and a second attachment surface 50 opposite to the first attachment surface 49. The attachment surfaces 49 and 50 are arranged orthogonally to the tool rotation axis a and preferably limit the material thickness t of the attachment device 113. The at least one torque receiving region 40 extends between the attachment surfaces 49 and 50.

[0149] The first boundary edge 21 extends circumferentially about the tool rotation axis a through the coding edge 35, particularly the coding edge region of the coding edge 35, and the driving edge 40a, particularly the driving edge region of the driving edge 40a, as a boundary. Figure 11 Or as shown in Figure 12. At least the driving edge region of the driving edge 40a is constructed in a straight line. At least the encoded edge region of the encoded edge 35 is constructed in a straight line. At least the encoded edge 35 is constructed substantially curved.

[0150] Encoding edge 35 connects the first boundary edge 21 to the second boundary edge 25. Driving edge 40a connects the first boundary edge 21 to the adjacent second boundary edge 25. Encoding edge 35 and driving edge 40a extend transversely to the tool rotation axis a in an orthogonal plane, particularly substantially in the radial direction. This orthogonal plane extends substantially orthogonally to the tool rotation axis a.

[0151] The first boundary circle 23 has at least one imaginary projected edge 22 located between two circumferentially adjacent first boundary edges 21, the projected edge being located on the first boundary circle 23 and extending concentrically with the first boundary circle 23 in the circumferential direction about the tool rotation axis a. Here, the circumferential extension dimension of the at least one first boundary edge 21 located on the first boundary circle 23 is larger than the extension dimension of the adjacent imaginary projected edge 22 located on the first boundary circle 23, by up to 10%. Preferably, one, especially each, the projected edge 22 is smaller than the first boundary edge 21 adjacent to the projected edge 22. This allows for particularly advantageous centering of the tool device 11, especially pre-centering or coarse centering.

[0152] The clamping wing 19 can be limited, particularly substantially, in a radial direction relative to the tool rotation axis a by each of a second boundary edge 25, the second boundary edge being located on the second, particularly largest, boundary circle 27 about the tool rotation axis a.

[0153] Boundary edges 21 and 25, coding edge 35, and driving edge 40a constitute the boundary profile of slot 17. In particular, the first boundary edge 21, coding edge 35, and driving edge 40a form the profile of clamping wing 19. Driving edge 40a and coding edge 35 define and connect the first boundary edge 21 along the circumferential boundary about the tool rotation axis a.

[0154] The clamping wings 19 are arranged symmetrically around the tool's rotation axis a. Alternatively, the clamping wings 19 may be staggered by 90° around the tool's rotation axis a, resulting in four rotational positions within a 360° rotation of the tool assembly 11 around the tool's rotation axis a. Or, the clamping wings 19 may be staggered by 180° or 60° around the tool's rotation axis a, resulting in two or six rotational positions within a 360° rotation of the tool assembly 11 around the tool's rotation axis a.

[0155] The clamping wing 19 extends at least substantially along an orthogonal plane extending radially along the tool's rotation axis a. In particular, this orthogonal plane extends substantially orthogonally to the tool's rotation axis a.

[0156] The boundary profile of the slot 17, in particular, at least in sections, has a coding portion implemented as a coding edge 35a, which is symmetrically implemented about the tool rotation axis a. The boundary profile can advantageously be implemented asymmetrically, especially non-axially symmetrically, about the tool rotation axis. In accordance with... Figure 11 and 12 In an advantageous implementation, the boundary profile can be implemented symmetrically about the tool rotation axis a, especially according to n-fold rotational symmetry.

[0157] exist Figure 11 and Figure 12 In the embodiment shown, the clamping wing 19 extends at least substantially along an orthogonal plane of the tool rotation axis a and is symmetrical about the radial direction of the radial axis r of the tool rotation axis a, which is a plane that unfolds through the radial and axial directions of the tool rotation axis a.

[0158] In an alternative embodiment, the clamping wing 19 can be symmetrical about a plane of symmetry that unfolds in the radial and axial directions via the tool rotation axis a, especially mirror symmetry.

[0159] In embodiments not shown in detail, the clamping wing 19 extends at least substantially along an orthogonal plane of the tool rotation axis a and is asymmetrical about the radial direction of the constitutive radial axis r of the tool rotation axis a about a symmetrical plane that unfolds through the radial and axial directions of the tool rotation axis a. In particular, it is not axially symmetrical.

[0160] The tool device 11 has a first side 45, which is oriented toward the handheld machine tool 211 in a secured state on the tool receiving device 213. The tool device 11 has a second side 47 opposite to the first side 45, which is oriented away from the handheld machine tool 211 in a secured state. The first side 45 and the second side 47 limit the tool device 11 in the axial direction along the tool rotation axis a.

[0161] The first side 45 of the tool assembly 11 has a radially inward first side region 46, which is provided to form a contact surface for support on the tool receiving device 213 of the machine tool 211.

[0162] The working area 15 is implemented in a disc shape and flat. The working area 15 is located radially outward and limits the radial extension dimension of the tool assembly 11. The working area 15 can be implemented as a grinding tool having at least one grinding element configured as an abrasive grain or grinding edge, or as a dividing tool configured with a cutting edge or at least one cutting tooth. However, this should not be limiting, as other working areas known to a person skilled in the art can also be configured.

[0163] The attachment device 113, designed to receive driving force, is connected to the working area 15 via a connection area 55, particularly a material locking connection, which is designed to transfer the driving force of the machine tool 211 from the attachment device 113 to the working area 15.

[0164] Machine tools and machine tool systems:

[0165] The tool receiving device 213 has at least a carrying device 215 and a clamping device 217 movable relative to the carrying device 215.

[0166] The clamping device 217 has two hook devices 217a and 217b configured as claws 218a and 218b, which are rotatably supported relative to each other about the clamping device rotation axis k of the clamping device 217.

[0167] Hooks 218a and 218b are in Figure 1For better illustration, the claws are arranged in a hypothetical state, namely, in a tightened state (right claw 218a) and a loosened state (left claw 218b). This hypothetical state of the claws 218a and 218b is preferably not achievable in the handheld machine tool 211 according to the invention, because both claws 218a and 218b are either both arranged in the tightened state or both arranged in the loosened state.

[0168] In the disengaged state of the clamping device 217, the hooks 218a and 218b protrude relative to the driving device 215 in the axial direction along the output axis A, for example in Figure 3 As can be seen at the left pawl 218a. It can be seen that the pawls 218a and 218b protrude much more along the axial direction of the output axis A relative to the carrying device 215 in the detached state of the tool receiving device 213 than in the tightened state.

[0169] The hypothetical state of the pawls 218a and 218b is preferably not achievable in the machine tool 211 according to the invention, because the machine tool 211 has a guiding device that guides the movement of the pawls 218a and 218b in such a way that the movement of the two pawls 218a and 218b is substantially symmetrical to each other.

[0170] The term "guiding device" here should particularly define a device configured to apply a force, at least axially and / or radially along the clamping direction of the clamping device, to the clamping device 217 along the output axis A to pre-determine the movement of the clamping device 217 along the clamping direction. For this purpose, the guiding device has at least one guiding element configured as a guide pin 285 on or about which the clamping device 217 is guided, and at least one support element configured as a support pin 286, which is configured to support the claws 218a, 218b in a manner rotatable about the clamping device rotation axis k of the support pin 286.

[0171] The guiding device has two guide slots configured as guide channels 281a and 281b, which respectively form guide rails for guiding the claws 218a and 218b.

[0172] Two hooks 218a and 218b each have guide channels 281a and 281b, respectively, which are configured to guide the hooks 218a and 218b by means of guide pins 285. The two hooks 218a and 218b are implemented symmetrically to each other. The guide channels 281a and 281b of the hooks 218a and 218b are implemented symmetrically to each other. Preferably, the movement of the two hooks 218a and 218b is substantially symmetrical, such that both hooks 218a and 218b are either both arranged in the fastened position or both arranged in the loosened position.

[0173] In the disengaged state of the clamping device 217—in which the hooks 218a and 218b are arranged in the disengaged position—they protrude relative to the carrying device 215 in the axial direction along the output axis A, for example in… Figure 2 Or Figure 1 As can be seen at the left hook 218a. Figure 1 The right pawl 218b is in the tightened state of the clamping device 217. The pawls 218a and 218b protrude much along the axial direction of the output axis A relative to the carrying device 215 in the detached state of the tool receiving device 213 than in the tightened state, in which the pawls 218a and 218b are arranged in the tightened position.

[0174] Guide pin 285 extends orthogonally to output axis A. Guide pin 285 has a clamping device rotation axis k, and guide pin 285 specifically constitutes the clamping device rotation axis k. Claws 218a and 218b are pivotally supported about the clamping device rotation axis k.

[0175] By means of the hooks 218a and 218b, the tool device 11 with different material thicknesses t can be clamped in the tool receiving device 213 according to the pivot angle formed by the clamping surface 233 of the clamping device 217 relative to the output axis A.

[0176] The claws 218a and 218b each have at least one radial clamping slot 231, configured to clamp the tool assembly 11 in a tightened state at least along the axial direction of the output axis A and to release it in a loosened state. Each clamping slot 231 has at least one clamping surface 233 for transmitting at least axial force to the tool assembly 11. The clamping slot 231 is implemented as a clamping recess extending radially along the output axis A. The clamping surface 233 extends substantially radially along the tool rotation axis a in the tightened state. The clamping surface 233 is oriented toward the machine tool 211 in the axial direction of the output axis A. The clamping surface 233 is implemented flat. The clamping surface 233 may be implemented with at least partial bending. Preferably, the clamping surface 233 contacts the attachment device 113 of the tool assembly 11 at least partially in point contact, preferably in line contact, and particularly preferably in surface contact. Here, the form of contact can be changed according to the material thickness t of the attachment device 113 to be connected to the tool receiving device 213 in the tool receiving device 213. In particular, the form of contact can be changed according to the elastic deflection of the clamping wing 19 of the tool device 11 in the axial direction along the output axis A.

[0177] The pawls 218a and 218b cover the clamping wing 19 in a tightened state along the radial direction of the output axis A up to 4 mm, and more particularly up to 3 mm.

[0178] The clamping device 217 has pawls 218a and 218b, each having at least one circumferential surface 245 that limits the maximum radial extension of the pawls 218a and 218b. The circumferential surfaces 245 of the pawls 218a and 218b are oriented apart from each other. The pawls 218a and 218b each have a first circumferential surface 245a and a second circumferential surface 245b, which are separated in the axial direction by a clamping slot 231. The first and second circumferential surfaces 245a and 245b limit the radial extension of the clamping slot 231 corresponding to the circumferential surfaces 245a and 245b. The first circumferential surface 245a is bent at least about the output axis A.

[0179] In the disengaged state, the peripheral surfaces 245 of the claws 218a and 218b protrude relative to the carrying claws 216a and 216b along the axial direction of the output axis A. In the disengaged state, the peripheral surfaces 245 of the claws 218a and 218b are angled relative to the output axis A, such that the distance between the peripheral surfaces and the output axis A decreases along the axial direction from the tool receiving device or the machine tool as it leaves the output axis A. The peripheral surface 245 of the clamping device 217 can form an angle λ relative to the output axis A in the disengaged state. Figure 1 The angle is between 20° and 30°.

[0180] The clamping slot 231 is configured to receive at least a portion of the tool assembly. The clamping slot 231 is configured to receive at least a portion of the tool assembly in a detached state. The clamping slot 231 is configured to receive and hold the tool assembly on a tool receiving device in a secured state. In the detached state, the clamping slot 231 protrudes at least partially relative to the carrying jaws 216a, 216b in the axial direction. The clamping slot 231 protrudes relative to the carrying jaws 216a, 216b in the detached state such that the attachment device 113 of the tool assembly is received by the clamping slot 231. In the detached state, the clamping slot 231 is angled relative to the output axis A, such that the attachment device 113 of the tool assembly 11 is received by the clamping slot 231. The clamping slot 231 is constructed as a circumferential slot. The clamping slot 231 may be constructed such that, in the detached state, the clamping slot 231 is at least partially open along the axial direction of the output axis A to receive the tool device 11, and in particular the attachment device 113 of the tool device 11.

[0181] The tool receiving device 213 has a generally rectangular opening 225, which is configured to receive and movably support the claws 218a and 218b, particularly along the axial direction of the output axis A. The opening 225 surrounds the claws 218a and 218b up to 360° in an orthogonal plane.

[0182] The claws 218a and 218b protrude axially relative to the opening. The opening 225 is at least partially defined by the second mounting surface. The opening 225 can receive or support the claws 218a and 218b torsionally about the output axis A. The opening 225 can be elongated in the radial plane.

[0183] The carrying device 215 and the clamping device 217 are designed to pass through the extension of the tool device 11 through the single slot 17 that covers the entire material thickness t of the tool device 11 and clamp the tool device 11 with the tool receiving device 213 by means of hooks 218a, 218b that are movable in a radial direction substantially along the output axis A.

[0184] like Figure 4 As shown, the drive mechanism 215 has four torque transmission regions 219 arranged in a star shape, spaced apart from the output axis A, for transmitting driving force to the tool device 11. At least one torque transmission region 219 may be configured as a straight output edge 219a, particularly the output edge region, or as a flat output surface 219b, particularly the output surface region. The output edge 219a and the output surface 219b extend at least substantially parallel to the radial direction of the output axis A.

[0185] The output surface 219b of the torque transmission region 219 is angled in the opposite direction of rotation of the tool receiving device 213 during the operation of the machine tool 211.

[0186] Two driven claws 216a and 216b have an output surface 219b parallel to the other driven claw 216a and 216b.

[0187] In the detached state, claws 218a and 218b protrude relative to the carrying claws 216a and 216b along the axial direction of the output axis A. The axial extension dimension of the clearance tool receiving device is also present in the detached state. In the secured state, carrying claws 216a and 216b protrude relative to the claws 218a and 216b along the axial direction of the output axis A. The axial extension dimension of the clearance tool receiving device is also present in the secured state.

[0188] The driving claws 216a and 216b each have two radial ridges, and the radial ridges shown are configured as torque transmission regions 219.

[0189] When the tool device 11 is fastened to the machine tool 211, the torque transmission region 219 of the tool receiving device 213 is located between the first orthogonal plane 235 and the second orthogonal plane 237 of the tool receiving device 213.

[0190] The first orthogonal plane 235 limits the tool receiving device 213 along the direction of the output axis A on the side facing the machine tool 211, and the second orthogonal plane 237 limits the tool receiving device 213 on the side away from the machine tool 211.

[0191] The torque receiving region 40 extends at least in sections along the radial direction of the output axis A between the first and second radial distances relative to the tool rotation axis a, wherein at least one of the sections is designed for torque transmission 219 from the machine tool 211 to the tool assembly 11.

[0192] Preferably, one torque transmission region 219 of the machine tool 211, preferably multiple, and particularly preferably all torque transmission regions 219 are in point contact with the torque receiving region 40 of the tool device 11 at least in sections, preferably in line contact and particularly preferably in surface contact.

[0193] The tool receiving device 213 has two carrying claws 216a and 216b, each having two torque transmission regions 219. The carrying claws are arranged rotationally symmetrically about the output axis A. The torque transmission regions 219 are arranged symmetrically about each other at 90° angles around the output axis A, so that the tool device can be connected to the tool receiving device 213 in four rotational positions.

[0194] The output surface 219b and the output edge 219a are angled against the direction of rotation of the tool receiving device during the operation of the machine tool 211.

[0195] The output surface 219b and the output edge 219a are folded around the output axis A in an angle β up to 30°, and more particularly up to 25°, relative to the plane unfolded in the axial and radial directions through the output axis A.

[0196] The outer peripheral surface 239 is circumferentially connected to the output surface 219b. The outer peripheral surface 239 is configured to center the tool assembly 11 on the second boundary edge 25 in the fastened state. In particular, the outer peripheral surface 239 is folded at an angle of about 1° circumferentially around the radial axis of the output axis A relative to the plane unfolded in the axial and radial directions through the output axis A, which makes the radial tolerance narrower when the tool assembly 11 is axially inserted into the tool receiving device 213 and allows the tool assembly 11 to be placed more precisely.

[0197] The carrying jaws 216a and 216b each have an inner circumferential surface 240, which lies on an inner circumferential circle 243 about the output axis A in at least a first orthogonal plane 235. The carrying jaws 216a and 216b each have two outer circumferential surfaces 239, which lie on an outer circumferential circle 245c about the output axis A in at least a first orthogonal plane 235, specifically defining the circumferential surface 245. The inner circumferential circle 243 is concentric with the outer circumferential circle 245c. The inner circumferential circle 243 has a diameter of 22 mm about the output axis A, such that the minimum diameter of the slot 17 of the attachment device 113 (approximately 22.2 mm), and especially the first boundary edge 21 of the clamping wing 19, achieves backward compatibility with conventional machine tools 211.

[0198] The carrying claws 216a and 216b have a width b of 10 mm.

[0199] An encoding surface 241 is connected to at least one outer peripheral surface 239 of the carrying claws 216a and 216b, which connects the inner peripheral surface 240 and the outer peripheral surface 239.

[0200] At least the inner circumferential surface 240, the outer circumferential surface 239, the encoding surface 241, and the output surface 219b will at least partially limit the carrying claws 216a and 216b in the radial direction along the output axis A.

[0201] The carrying device 215 is constructed of two carrying claws 216a and 216b, particularly serving as guide claws. These carrying claws are configured to guide the hooks 218a and 218b radially, in such a way that the hooks 218a and 218b can move radially about the clamping device rotation axis k along the output axis A and perpendicular to the radial direction limit. The carrying claws 216a and 216b limit the opening 225 along the main extension dimension of the substantially rectangular opening 225 in the radial direction along the tool rotation axis a.

[0202] Figure 4 In particular, a tool receiving device 213 is shown, having a flat, annular support surface 261 configured to support the tool device 11, and in particular at least its contact surface 61, in the axial direction. The support surface 261 is arranged radially spaced from the claws 218a and 218b and surrounds the claws 218a and 218b 360° in at least one plane. The support surface 261 extends orthogonally to the output axis A.

[0203] Figure 2The working area 15 of the tool assembly 11 is shown in section. This working area is arranged on the attachment device 113 such that, in the fastened state, the working area 15 protrudes relative to the attachment device 113 along the tool rotation axis a in a direction oriented toward the tool receiving device 213 of the machine tool 211. Here, the contact surface 61 of the working area 15 can contact the support surface 261 of the machine tool 211 in the fastened state and form a force-locked connection with respect to the machine tool 211 in the circumferential direction along the tool rotation axis a.

[0204] In the secured state of the tool device 11, the contact surface 61 forms a circumferential force-locked support with the support surface 261 of the machine tool 211. This allows for additional vibration damping in the axial direction even within the elastic working area 61. It also enables axial pre-tensioning of the clamping wing 19.

[0205] The support surface 261 extends radially along the output axis A between a first radial inner distance Ri and a second radial outer distance Ra, wherein the first radial inner distance Ri is smaller than the second radial outer distance Ra. The first radial inner distance Ri constitutes the inner radius of the limiting support surface 261. The second radial outer distance Ra constitutes the outer radius of the limiting support surface 261.

[0206] In the tightened state, the first boundary edge 21 of the clamping wing 19 of the tool device 11 protrudes radially along the output axis A relative to the first radial inward distance Ri of the support surface 261, particularly up to 2 mm. The clamping wing 19 protrudes from the support surface 261 in such a way that in this region, particularly at least in the region of the first boundary edge 21, there is no support surface 261 or no support material for axially supporting the clamping wing 19.

[0207] The clamping wing 19 is not supported on the support surface 261 in the radial direction, and in particular, is not fully supported on the support surface 261, so that the clamping wing 19 can be elastically bent at least in sections in the axial direction. In particular, the support surface 261 is not provided directly under the first boundary edge 22 of the clamping wing 19 in the axial direction. In particular, the support surface 261 is not provided directly under the second boundary edge 24 of the clamping wing 19 in the axial direction. Therefore, the first boundary edge 22 and / or the second boundary edge 24 of the tool device 11 have a maximum radial extension dimension in the tightened state, which is smaller than the minimum extension dimension of the support surface 261, or the first radial inner distance Ri.

[0208] The carrying device 215 can be configured as a protective device. The maximum radial extension dimension of the carrying device 215 is greater than the maximum radial extension dimension of the clamping device 217 in the tightened state. Thus, the carrying claws 216a and 216b, which protrude radially along the output axis A when the rotating drive tool receiving device 213 is driven, ensure the protection of the hooks 218a and 218b in such a way that the hooks 218a and 218b protect the hook devices 217a and 217b by the carrying claws 216a and 216b when the hooks 218a and 218b accidentally come into contact with the workpiece during the operation of the machine tool 211.

[0209] In particular, the claws 218a and 218b can protrude relative to the carrying claws 216a and 216b in the axial direction of the output axis A in the direction of directional orientation away from the tool receiving device 213 when the tool receiving device 213 is in the detached state.

[0210] In particular, the projected edge 22 of the attachment device 113 of the tool device 11 is shorter in the circumferential direction than the minimum extension dimension of the circumferential surface 245 in the circumferential direction around the output axis A, by a minimum of up to 70%, preferably up to 50%, most preferably up to 30%, particularly preferably up to 20%, and even more preferably up to 10%, so that the tool receiving device 213 can be pre-aligned or coarsely aligned around the hooks 218a and 218b during the placement of the tool device 11 in a detached state.

[0211] The tool receiving device has a first placement area and a second placement area. The first placement area is constructed as a flat first placement surface. The second placement area is constructed as a flat second placement surface. The first placement surface limits the axial extension dimension of the carrying device. The first placement surface limits the axial extension dimension of the tool receiving device in the tightened state. The second placement surface surrounds the first placement area, particularly surrounding 360° in a plane. The placement surface extends at least substantially radially along the output axis and circumferentially about the output axis. The first placement surface is spaced apart from the second placement surface in the axial direction of the output axis and is arranged, in particular, parallel to it. The placement surface limits the output surface 219b and the output edge 219a. The placement surface is oriented away from the tool receiving device. The tool device is located on the second placement surface in the tightened state. The tool device can be located on the first placement surface in the loosened state. The second placement surface can be a support surface.

[0212] The carrying device 217 has a circumferential boundary profile that limits the radial extension dimensions of the carrying device 217, especially the carrying claws 216a and 216b.

[0213] The circumferential boundary contour of the carrying device 217 forms the encoding device 251, which is implemented as a protruding section of the tool receiving device 213 in the region of the output axis A. The encoding device 251 is designed to fit into the slot 17 of the tool device 11, such as... Figure 12As shown. The encoding device 251 is substantially corresponding to the negative shape of the boundary profile of the slot 17 of the attachment device 113, thereby enabling a shape-locking connection between the tool device 11 and the tool receiving device 213.

[0214] However, it is also possible for the slot 17 to have a shape different from the negative shape, the shape having at least a segmental radial extension dimension that is larger than the inner circumference 243 of the carrying claws 216a, 216b, and especially larger than the outer circumference 245c.

[0215] The encoding device 251 is composed of the peripheral surfaces (inner peripheral surface 240, outer peripheral surface 239, encoding surface 241 and output surface 219b) of the carrying claws 216a and 216b.

[0216] The encoding device 251 is rotationally symmetric about the output axis A, especially according to n-fold rotational symmetry. However, it is also conceivable that the encoding device 251 has a configuration different from the rotationally symmetric configuration, such as an asymmetrical configuration.

[0217] Furthermore, the tool device 11 can also be used with the aid of a machine tool 211, particularly an angle grinder, for the application of a conventional tool receiving device 213 for receiving the tool device 11, for example, by means of a tightening device (not shown further), which includes at least one fastening screw, washer, and nut component. The tool device 11 is held on the machine tool 211 by means of a fastening screw, which applies its force to the tool device 11 via the washer. The transmission of driving force from the machine tool 211 to the tool device 11 is essentially achieved through the shape-locking interlocking of the torque transmission region 219 and the torque receiving region 40. Here, the tool device 11 is held on the machine tool 211 such that the tool rotation axis a and the output axis A are substantially coincident. The tool device 11 is driven rotatably about the output axis A.

[0218] Figure 5b Images 5c, 5d, and 5e show alternative configurations of the tool receiving device 213 for receiving the tool device 11, the attachment device 113 of which has a symmetrical configuration. Figure 5b The tool receiving device 213 shown in 5c, 5d and 5e has at least substantially similar to the previous figures, especially in Figure 5a The configuration of the tool receiving device 213 shown is different from that shown in the previous figure. Figure 5b The tool receiving device 213 shown in 5c, 5d, and 5e has a carrying device 215 symmetrically configured about a plane of symmetry extending at least substantially parallel to the output axis A. Preferably, the output axis A extends in this plane of symmetry, and the carrying device 215 is symmetrically configured about this plane of symmetry.

[0219] Figure 5b The carrying device 215 shown preferably has carrying claws 216a and 216b with mutually symmetrical configurations. In particular, the carrying claws 216a and 216b are configured as mirror images of each other, especially with respect to a plane of symmetry including the output axis A. Preferably, the carrying claws 216a and 216b are configured as mirror images of each other with respect to a plane extending at least substantially perpendicular to this plane of symmetry. Preferably, at least one guide slot of the carrying device 215 is arranged on each of the carrying claws 216a and 216b. Figure 5b Not shown in detail and with Figure 5b The tool receiving device 213 is correspondingly constructed such that the clamping wings of the tool device 11, having a particularly rectangular, preferably trapezoidal, cross-section, can be inserted into and / or arranged in the guide slot. In particular, the carrying claws 216a and 216b each have at least one guide ramp. The guide ramps are arranged on the outer surfaces of the carrying claws 216a and 216b that at least partially demarcate the guide slot.

[0220] Figure 5c The illustrated carrying device 215 preferably has carrying claws 216a and 216b with mutually symmetrical configurations. In particular, the carrying claws 216a and 216b are mirror-symmetrically configured, especially with respect to a plane of symmetry including the output axis A. Preferably, the carrying claws 216a and 216b are mirror-symmetrically configured with respect to a plane extending at least substantially perpendicular to this plane of symmetry. The carrying claws 216a and 216b each have a rectangular basic shape with at least two chamfered edges. On the outer side of each carrying claw 216a and 216b connecting the two chamfered edges, the carrying claws 216a and 216b each include a protrusion. The protrusions of each carrying claw 216a and 216b are preferably fan-shaped. The protrusions of each carrying claw 216a and 216b can, for example, be configured as... Figure 5c The tool receiving device 213 shown is equipped with an encoding element. Preferably, the clamping device 217 is at least substantially perpendicular to... Figure 10 The clamping surface 233 of the clamping device 217 of the tool receiving device 213 shown has a fan-shaped ridge extending from its inner surface. The ridge of the clamping device 217 can, for example, be configured as... Figure 5c The tool receiving device 213 shown has a fastening coding element. Preferably, it can be advantageously achieved by means of... Figure 5c The clamping device 217 of the tool receiving device 213 shown minimizes the use of tool devices with slots that do not correspond to the protrusions of the clamping device 217. Figure 5c (Not shown in detail) Fastening. Preferably, the protrusions of the carrying claws 216a, 216b and the protrusion of the clamping device 217 form four circumferential profiles of the tool receiving device 213 in a plane extending at least substantially perpendicular to the output axis A.

[0221] Figure 5d The illustrated carrying device 215 preferably has carrying claws 216a and 216b with mutually symmetrical configurations. In particular, the carrying claws 216a and 216b are mirror-symmetrically configured, especially with respect to a plane of symmetry including the output axis A. Preferably, the carrying claws 216a and 216b are mirror-symmetrically configured with respect to a plane extending at least substantially perpendicular to this plane of symmetry. Preferably, each carrying claw 216a and 216b has at least two [unclear characters - likely referring to a specific configuration or arrangement]. Figure 5d The clamping wing 19 of the tool device 11 shown corresponds to the carrying and / or encoding profile. Preferably, the carrying and / or encoding profile is constructed as a recess in the outer contour of the carrying device 215, especially when viewed in a plane that extends at least substantially perpendicular to the output axis A. Figure 5d The tool receiving device 213 shown includes a clamping device 217 comprising an inner surface extending at least substantially perpendicular to the clamping surface 233 of the clamping device 217. Viewed in a plane extending at least substantially perpendicular to the output axis A, this inner surface has a orientation similar to the carrying and / or encoding profile. Preferably, the carrying and / or encoding profiles of the carrying claws 216a, 216b and the inner surface of the clamping device 217 form six circumferential profiles of the tool receiving device 213 in a plane extending at least substantially perpendicular to the output axis A.

[0222] Figure 5e The carrying device 215 shown preferably has carrying claws 216a and 216b with mutually symmetrical construction, especially carrying claws 216a and 216b with mutually point-symmetric construction. On the carrying device 215, preferably each carrying claw 216a and 216b is arranged with at least two assembly coding elements 300, 302, 308, and 310 of the tool receiving device 213. It is conceivable, alternatively or additionally, that each of the two assembly coding elements 300, 302, 308, and 310 of the tool receiving device 213 is arranged at least substantially similarly on the hook devices 217a and 217b. The at least two assembly coding elements 300, 302, 308, and 310 of the tool receiving device 213 arranged on each carrying claw 216a and 216b preferably each have a maximum circumferential extension dimension less than or equal to 17 mm. Preferably, the at least two assembly coding elements 300, 302, 308, 310 of the tool receiving device 213 arranged on each of the carrying claws 216a, 216b are particularly commonly arranged on the corresponding carrying claws 216a, 216b within an angular region having values ​​in the range of 10° to 40°.

[0223] Figures 13 to 18 Additional detailed views of the machine tool system are shown, with the additional details in front. Figures 1 to 12 For clarity reasons, it is not shown, in order to achieve Figures 1 to 12 Simple and readable. For Figures 13 to 18Publicly available features can be similarly transferred to Figures 1 to 12 .

[0224] The tool device 11 includes at least one tool assembly coding element 304, 306, 312, 314, which is configured to cooperate with at least one assembly coding element 300, 302, 308, 310 of the tool receiving device 213 when the tool device 11 is arranged on the tool receiving device 213. The at least one tool assembly coding element 304, 306, 312, 314 of the tool device 11 and the at least one assembly coding element 300, 302, 308, 310 of the tool receiving device 213 are constructed in particular corresponding manner. Preferably, the at least one assembly coding element 300, 302, 308, 310 of the tool receiving device 213 is configured to encode the arrangement, fixation, or placement of the tool device 11 on or on the tool receiving device 213, particularly the support surface 261. Preferably, the at least one assembly coding element 300, 302, 308, 310da of the tool receiving device 213 is configured to encode the arrangement, fixation or placement of the tool device 11 on or on the tool receiving device 213, particularly the support surface 261, according to the key-keyhole principle.

[0225] The carrying device 215 includes at least one assembly coding element 300, 302, which is configured to cooperate with at least one tool assembly coding element 304, 306 of the tool device 11 in the state where the tool device 11 is arranged on the tool receiving device 213. The at least one assembly coding element 300, 302 of the carrying device 215 is arranged on at least one carrying claw 216a, 216b of the carrying device 215 (see...). Figure 13 ).

[0226] The at least one assembly coding element 300, 302 of the carrying device 215 is configured as a mechanical assembly coding element. The at least one assembly coding element 300, 302 of the carrying device 215 is integrally constructed with the carrying claws 216a, 216b. The at least one assembly coding element 300, 302 of the carrying device 215 is configured as a raised portion. However, it is also conceivable that the at least one assembly coding element 300, 302 of the carrying device 215 may have other configurations that are considered meaningful by a person skilled in the art, such as slots, connecting strips, etc. The at least one assembly coding element 300, 302 of the carrying device 215 preferably extends at least along a direction that extends transversely to, and at least substantially perpendicular to, the tool rotation axis a of the tool device 11. The at least one assembly coding element 300, 302 of the carrying device 215 is arranged adjacent to the inner circumferential surface 240 of the at least one carrying claw 216a, 216b. The at least one assembly coding element 300, 302 of the carrying device 215 extends from the inner circumferential surface 240 of the at least one carrying claw 216a, 216b, particularly in a direction pointing away from the tool rotation axis a, and extends at most to the circumferential surface 245 bounded by the outer circumferential circle 245c (see...). Figure 12 and 13 ).

[0227] Viewed circumferentially, the at least one assembly coding element 300, 302 of the carrying device 215 is preferably arranged between the output edge 219a and / or the output surface 219b and the carrying claw 216a, 216b on the side opposite to the output edge 219a and / or the output surface 219b. Preferably, the at least one assembly coding element 300, 302 of the carrying device 215 has a maximum extension dimension along the circumferential direction, which is smaller than the maximum circumferential spacing between the output edge 219a and / or the output surface 219b and the carrying claw 216a, 216b on the side opposite to the output edge 219a and / or the output surface 219b. Preferably, the at least one assembly coding element 300, 302 of the carrying device 215 is arranged in an angular region of less than 60° between the output edge 219a and / or the output surface 219b and the carrying claw 216a, 216b on the side opposite to the output edge 219a and / or the output surface 219b.

[0228] The at least one assembly coding element 300, 302 of the carrying device 215 can have any configuration that is considered meaningful by a person skilled in the art. For example, it is conceivable that the at least one assembly coding element 300, 302 of the carrying device 215, especially when viewed in the first orthogonal plane 235, has a polygonal (square, rectangle, triangle, deformed, etc.) or circular (semicircular, semicircular with a wavy outer perimeter, etc.) cross-section, as exemplarily also from Figure 15As derived therein, the at least one tool assembly coding element 304, 306, 312, 314 of the tool device 11 is preferably constructed correspondingly to at least one assembly coding element 300, 302, 308, 310 of the tool receiving device 213. However, it is also conceivable that the at least one tool assembly coding element 304, 306, 312, 314 of the tool device 11 and the at least one assembly coding element 300, 302, 308, 310 of the tool receiving device 213 are constructed differently, particularly in terms of size. For example, it is conceivable that the at least one tool assembly coding element 304, 306, 312, 314 of the tool device 11 has a maximum extension dimension along the circumferential or radial direction, which is many times the maximum extension dimension of the at least one assembly coding element 300, 302, 308, 310 of the tool receiving device 213, etc.

[0229] Preferably, at least one assembly coding element 300, 302 is arranged on each of the carrying claws 216a, 216b of the carrying device 215 (see [link]). Figure 13 However, it is also conceivable that each of the carrying claws 216a and 216b may have more than one assembly coding element 300 or 302, for example, each of the carrying claws 216a and 216b may have at least two, at least three, at least four, or more assembly coding elements 300 or 302. The assembly coding elements 300 or 302 arranged on the carrying claws 216a and 216b may have particularly similar configurations. Different configurations of the assembly coding elements 300 or 302 are also conceivable.

[0230] Preferably, the assembly coding elements 300, 302 of the carrying device 215 arranged on the carrying claws 216a, 216b are arranged asymmetrically about a plane including the output axis A. However, it is also conceivable that the assembly coding elements 300, 302 of the carrying device 215 arranged on the carrying claws 216a, 216b are arranged symmetrically about a plane including the output axis A, as particularly exemplary by means of Figure 1 The possible corresponding arrangements of the tool assembly coding elements 304, 306, 312, 314 can be derived as follows.

[0231] The clamping device 217, and in particular at least the hook devices 217a and 217b of the clamping device 217, includes at least one mounting coding element 308 or 310 (see [link]). Figure 13 and 17The assembly coding elements 308, 310 of the clamping device 217 are preferably arranged on the claws 218a, 218b, particularly in the clamping slots 231 of the claws 218a, 218b. Preferably, the clamping device 217 includes a plurality of assembly coding elements 308, 310, particularly at least two. However, it is also conceivable that the clamping device 217 has a different number of assembly coding elements 308, 310 arranged on the claws 217a, 217b than in 1 and 2. Preferably, the at least one assembly coding element 308, 310 of the clamping device 217 constitutes a fixed coding element, which is configured to encode the fastening of the tool device 11 on the tool receiving device 213. Preferably, the at least one assembly coding element 308, 310 of the clamping device 217 is configured to encode the fastening of the tool device 11 on the tool receiving device 217 according to a key-keyhole principle.

[0232] Preferably, the at least one assembly coding element 308, 310 of the clamping device 217 is integrally constructed with the claws 218a, 218b. However, it is also conceivable that the at least one assembly coding element 308, 310 of the clamping device 217 is constructed independently of the claws 218a, 218b and fixed to the claws 218a, 218b by means of a connection deemed meaningful by a person skilled in the art. Preferably, the at least one assembly coding element 308, 310 of the clamping device 217 is arranged on the clamping surface 233 of the clamping device 217, particularly directly adjacent to the clamping surface 233, which at least partially defines the clamping slot 231. The at least one assembly coding element 308, 310 of the clamping device 217 has a maximum extension dimension within the clamping slot 231 that is smaller than the maximum extension dimension of the clamping surface 233 of the clamping device 217. Preferably, the at least one assembly coding element 308, 310 of the clamping device 217 is constructed as a raised portion. However, it is also conceivable that the at least one assembly coding element 308, 310 of the clamping device 217 may have other configurations that are considered meaningful by a person skilled in the art, such as slots, channels, connecting strips, serrated profiles, etc. The at least one assembly coding element 308, 310 of the clamping device 217 may be arranged symmetrically or asymmetrically on the hooks 218a, 218b with respect to the intermediate plane, especially the symmetrical plane, of the hooks 218a, 218b, as particularly exemplary by means of Figure 18 The possible corresponding arrangements of the tool assembly coding elements 304, 306, 312, and 314 can be derived as follows.

[0233] Preferably, the intermediate plane, especially the plane of symmetry, of the claws 218a and 218b extends substantially parallel to and / or includes the output axis A, except for the arranged assembly coding elements 308 and 310. It is also conceivable that the at least one assembly coding element 308 and 310 of the clamping device 217 is arranged spaced apart on the claws 218a and 218b relative to the intermediate plane, especially the plane of symmetry.

[0234] The attachment device 113 of the tool device 11 has at least one tool assembly coding element 304, 306, 312, 314, which is configured to cooperate with at least one assembly coding element 300, 302, 308, 310 of the tool receiving device 213 when the tool device 11 is arranged on the tool receiving device 213. The at least one tool assembly coding element 304, 306, 312, 314 is arranged on at least one clamping wing 19 of the attachment device 113 (see...). Figure 18 The at least one tool assembly coding element 304, 306, 312, 314 has a maximum extension dimension along the radial axis that corresponds to the maximum spacing between the first boundary circle 23 and the second boundary circle 27 of the attachment device 113, as exemplarily from... Figure 18 Different implementation possibilities of the attachment device 113 can be derived. The at least one tool assembly coding element 304, 306, 312, 314 is preferably arranged on the clamping wing 19 of the attachment device 113 in an angular region between the drive edge 40a and the coding edge 35. In particular, this angular region has a maximum extension dimension of 90° or less, preferably 60° or less, and particularly preferably 40° or less. The maximum extension dimension of the at least one tool assembly coding element 304, 306, 312, 314 along the circumferential direction is preferably smaller than the maximum distance between the drive edge 40a and the coding edge 35 of the attachment device 113. In particular, the at least one tool assembly coding element 304, 306, 312, 314 extends circumferentially in the region between the drive edge 40a and the coding edge 35. The region between the drive edge 40a and the coding edge 35 is preferably arranged within the first boundary circle 23 and the second boundary circle 27 of the attachment device 113. Preferably, the region is composed of sub-regions of an annulus bounded by a first boundary circle 23 and a second boundary circle 27 of the attachment device 113, as exemplarily from... Figure 18 As can be seen from the different implementation possibilities in the table list, combinations of the implementation possibilities shown can also be envisioned. The attachment device 113 preferably includes a plurality of tool assembly coding elements 304, 306, 312, 314, which can be arranged symmetrically, especially with n-fold rotational symmetry or asymmetrically on the attachment device 113, especially on the clamping wing 19.

[0235] Figure 14 An embodiment of the tool device 11 according to the invention is shown, which has at least one tool assembly coding element 304, 306, 312, 314, configured to cooperate with at least one assembly coding element 300, 302, 308, 310 of the tool receiving device 213 in a state where the tool device 11 is arranged on the tool receiving device 213. The at least one tool assembly coding element 304, 306, 312, 314 is arranged on at least one clamping wing 19 of the attachment device 113. The at least one tool assembly coding element 304, 306, 312, 314 has a maximum extension dimension along the radial axis r, which is at most equivalent to the maximum distance between the first boundary circle 23 and the second boundary circle 27 of the attachment device 113, as exemplarily achievable from the attachment device 113. Figure 18 As derived from the different implementation possibilities. The at least one tool assembly coding element 304, 306, 312, 314 is preferably arranged on the clamping wing 19 of the attachment device 113 in an angular region between the drive edge 40a and the coding edge 35 of the attachment device 113.

[0236] Figure 14 The illustrated tool device 11, replacing or additional to the at least one tool assembly coding element 304, 306, 312, 314, includes at least one additional tool assembly coding element 316, 318, 320, 322, configured to receive a safety and / or positioning element 324 (e.g., in...) movably supported on the tool receiving device 213. Figure 16a and 16b (As shown in the diagram). The safety and / or positioning element 324 of the tool receiving device 213, which is movably supported, can be configured, for example, as a spring-loaded locking pin or the like. The at least one additional tool assembly coding element 316, 318, 320, 322 is preferably arranged on the clamping wing 19. Preferably, the at least one additional tool assembly coding element 316, 318, 320, 322 is configured as a material-free through-hole in the clamping wing 19, particularly a slot extending completely through the maximum material thickness h of the clamping wing 19. However, it is also conceivable that the additional tool assembly coding elements 316, 318, 320, 322 are configured as recesses on the clamping wing 19 and / or the bearing flange 14, for example, recesses manufactured by an embossing method, such as exemplarily in Figure 16a and 16b As shown in the figure. The bearing flange 14 can be integrally constructed with the working area 15 or connected to the working area 15 by means of fastening elements, particularly manufactured by an embossing method, for form-locking and / or force-locking (see Figure 15). Figure 16a and 16b ).

[0237] The maximum diameter dw of the at least one additional tool assembly coding element 316, 318, 320, 322 preferably corresponds to a value in the range of 0.8 mm to 1.6 mm. Preferably, the at least one additional tool assembly coding element 316, 318, 320, 322 is arranged on the clamping wing 19 in the radial region between the first boundary circle 23 and the second boundary circle 27. However, it is also conceivable that the at least one additional tool assembly coding element 316, 318, 320, 322 is arranged in other regions of the tool device 11. Advantageously, the tool device 11 includes a plurality of additional tool assembly coding elements 316, 318, 320, 322, which are preferably evenly distributed on the tool device 11, and in particular on the bearing flange 14 of the tool device 11. In particular, the additional tool assembly coding elements 316, 318, 320, 322 are arranged on a common ring 326 having a maximum diameter in the range of 23 mm to 28 mm. The common ring preferably has a center point arranged on the tool's rotation axis a.

[0238] Figure 15 A detailed view of one of the clamping wings 19 is shown. Preferably, the clamping wing 19 has a maximum reference parameter D corresponding to the spring stiffness, the value of which comes from a range of 10,000 N / mm to 350,000 N / mm. The maximum reference parameter D of the clamping wing corresponding to the spring stiffness is preferably obtained by the following relationship.

[0239] F = Dz, where...

[0240] Wherein, L represents the maximum average extension dimension of the clamping wing 19 between the first boundary circle 23 and the second boundary circle 27, particularly along the direction extending at least substantially parallel to the radial axis r; b represents the maximum tangential extension dimension of the clamping wing 19 along the second boundary circle 27; and h represents the maximum material thickness of the clamping wing 19 in the axial direction along the tool rotation axis a. The maximum material thickness h can preferably correspond to a value from the range of 0.5 mm to 1.6 mm.

[0241] Exemplary implementation possibilities of attachment device 113 Figure 18The table list shown—particularly regarding the implementation possibilities of tool assembly coding elements 304, 306, 312, 314—shows possible embodiments of tool assembly coding elements 304, 306, 312, 314 in terms of size, particularly length, width, etc. The second column shows possible embodiments of tool assembly coding elements 304, 306, 312, 314 in terms of shape—e.g., polygonal, circular, etc. The third column shows possible embodiments of tool assembly coding elements 304, 306, 312, 314 in terms of arrangement relative to the radial axis r or a plane including the tool rotation axis a, such as symmetrical arrangement about the radial axis r, single-sided arrangement about the radial axis r, n-fold rotational symmetry, etc. Figure 18 In the accompanying drawings, reference numerals only indicate possible implementations to improve the readability of the table list. However, the attachment 113... Figure 18 The implementation possibilities shown, particularly in relation to the tool assembly coding elements 304, 306, 312, 314, should not be considered as limitations, as the tool assembly coding elements 304, 306, 312, 314 may have additional implementation possibilities that are of interest to a person skilled in the art.

Claims

1. A machine tool having a tool receptacle (213) which can be moved in rotation about an output axis (A), wherein The tool receiving device (213) is designed to hold the tool device (11) on the machine tool (211) such that the output axis (A) and the tool rotation axis (a) coincide, wherein the tool receiving device (213) has at least one carrying device (215) and a clamping device movable relative to the carrying device (215), wherein the carrying device (215) has at least one torque transmission region (219) spaced apart from the output axis (A) for transmitting driving force to the tool device (11). Its features are, The carrying device (215) and the clamping device are configured to pass through a slot (17) of the tool device (11) and clamp the tool device (11) by means of a clamping device that can move in a radial direction relative to the output axis (A). The tool receiving device (213) has an axial opening (225) configured to receive the clamping device. The carrying device (215) is constructed by at least one carrying claw serving as a guide claw that limits the opening (225) at least partially in the radial direction of the output axis (A). The carrying claw is configured to guide the clamping device of the tool receiving device (213) in the radial direction.

2. Machine tool according to claim 1, characterized in that The carrying device (215) and the clamping device are provided with a single slot (17) for passing through the tool device (11).

3. Machine tool according to claim 1 or 2, characterized in that The carrying device (215) has a maximum radial extension dimension of the output axis (A), which is greater than the maximum radial extension dimension of the clamping device in the fastened state.

4. Machine tool according to claim 1 or 2, characterized in that The clamping device protrudes relative to the carrying device (215) in the detached state of the tool receiving device (213) along the axial direction of the output axis (A) in a direction oriented away from the machine tool (211) to facilitate pre-aligning the tool device (11) in the radial direction.

5. The machine tool according to claim 1 or 2, characterized in that, The at least one torque transmission region (219) is angled against the direction of rotation of the tool receiving device (213) during the operation of the machine tool (211).

6. The machine tool according to claim 1 or 2, characterized in that, The tool receiving device (213) has an operating device (229) which is configured to switch the clamping device from a loose state to a tight state when the operating device (229) is axially operated by means of an operating force.

7. The machine tool according to claim 1 or 2, characterized in that, The clamping device has at least one radial clamping slot (231) configured to clamp the tool device (11) in a fastened state at least along the axial direction of the output axis (A) and release it in a detached state.

8. The machine tool according to claim 1 or 2, characterized in that, The carrying device (215) includes at least one assembly coding element, which is configured to cooperate with the tool assembly coding element of the tool device (11) in a state in which the tool device (11) is arranged on the tool receiving device (213); and / or The assembly coding element of the carrying device (215) is arranged on at least one carrying claw of the carrying device (215); and / or The assembly coding element of the carrying device (215) is arranged adjacent to the inner peripheral surface (240) of the at least one carrying claw.

9. The machine tool according to claim 1 or 2, characterized in that, The clamping device includes at least one assembly coding element; The clamping device has a clamping slot (231), and the assembly coding element is arranged in the clamping slot (231).

10. The machine tool according to claim 1 or 2, characterized in that, The machine tool in question is a hand-guided machine tool; The tool device (11) is an insert tool; The slot extends through the entire material thickness of the tool device (11).

11. The machine tool according to claim 1 or 2, characterized in that, The machine tool in question is an angle grinder.

12. The machine tool according to claim 5, characterized in that, The torque transmission area (219) is folded into an angle of up to 50°.

13. The machine tool according to claim 5, characterized in that, The torque transmission area (219) is folded into an angle of up to 40°.

14. The machine tool according to claim 5, characterized in that, The torque transmission area (219) is folded into an angle of up to 30°.

15. The machine tool according to claim 5, characterized in that, The torque transmission area (219) is folded into an angle of up to 25°.

16. A machine tool system comprising at least one machine tool (211) according to any one of claims 1 to 15 and at least one tooling device (11) capable of being received by said machine tool (211), characterized in that, The tool device (11) has a carrying device (215) for the machine tool (211) and a slot for the clamping device.

17. The machine tool system according to claim 16, characterized in that, The tool device (11) has a tool rotation axis (a) and an attachment device (113) having a slot (17) configured to at least partially surround the tool receiving device (213) of the machine tool (211) circumferentially along the output axis (A), and the tool device (11) has at least one torque receiving area (40) that at least partially limits the slot (17) radially along the tool rotation axis (a), the attachment device (113) 13) Extending axially between a first attachment surface (49) and a second attachment surface (50) opposite to the first attachment surface (49), and the first attachment surface (49) and the second attachment surface (50) are arranged orthogonally to the tool rotation axis (a), and the first attachment surface (49) and the second attachment surface (50) constitute the material thickness t of the attachment device (113), and the at least one torque receiving area (40) is arranged between the first attachment surface (49) and the second attachment surface (50); and / or The clamping device includes at least one assembly coding element configured to encode the fastening of the tool device on the tool receiving device (213), wherein the tool device (11) has at least one tool assembly coding element configured to cooperate with at least one assembly coding element of the tool receiving device (213) in a state in which the tool device (11) is arranged on the tool receiving device (213), wherein the at least one tool assembly coding element is arranged on at least one clamping wing (19) of the attachment device (113) of the tool device (11).

18. The machine tool system according to claim 16 or 17, characterized in that, The tool receiving device (213) has a flat support surface (261) configured to support at least one abutment surface (61) of the tool device (11) in the axial direction, and the support surface (261) extends in the radial direction of the tool rotation axis (a) between a radial inner distance (Ri) and a radial outer distance (Ra) relative to the output axis (A), and the attachment device (113) of the tool device (11) has at least one clamping wing (19) that at least partially defines the slot (17) in the radial direction, the clamping wing being defined by a first boundary edge (21) in the radial direction of the tool rotation axis (a), and the clamping wing (19) protruding in the radial direction of the output axis (A) relative to the radial inner distance (Ri) of the support surface (261) in the fastened state of the tool device (11) and the machine tool (211), such that there is no support material for supporting the clamping wing (19) in this area.

19. The machine tool system according to claim 17, characterized in that, The attachment device (113) has at least two clamping wings (19) that are respectively bounded by a first boundary edge (21) that constitutes the circumferential extension of the clamping wings along the tool rotation axis (a) in the radial direction. The first boundary edge is located on the smallest first boundary circle (23) about the tool rotation axis (a). The clamping device has a circumferential surface (245) that defines the radial extension of the clamping device. The distance between at least two adjacent first boundary edges (21) along the tool rotation axis (a) in the circumferential direction is less than the distance between the smallest extension of the circumferential surface (245) of the clamping device in the circumferential direction.

20. The machine tool system according to claim 17, characterized in that, The at least one tool assembly coding element is arranged on the clamping wing (19) of the attachment device (113) in an angular region between the drive edge (40a) and the coding edge (35) of the attachment device (113); and / or The clamping wing (19) extends along an orthogonal plane to the tool rotation axis (a) and is asymmetrical about the radial direction of the radial axis (r) formed by the tool rotation axis (a) about the radial and axial directions of the tool rotation axis (a); and / or The at least one tool assembly coding element is arranged on at least one clamping wing (19) of the attachment device (113) and / or the at least one tool assembly coding element has a maximum extension dimension along the radial axis (r), which is at most equivalent to the maximum distance between the first boundary circle (23) and the second boundary circle (27) of the attachment device (113).

21. The machine tool system according to claim 17, characterized in that, The slot is configured to completely surround the tool receiving device (213) of the machine tool (211) circumferentially along the output axis (A).

22. The machine tool system according to claim 18, characterized in that, The support surface (261) is annular; The first boundary edge (21) protrudes radially along the output axis (A) relative to the radial inner distance (Ri) of the support surface (261) in the fastened state of the tool device (11) and the machine tool (211), such that there is no support material for supporting the clamping wing (19) in this region.

23. The machine tool system according to claim 20, characterized in that, The clamping wing (19) is not axisymmetric about the radial direction.

Images