Motor-driven guide device for machine tools

Abstract

A portable device for receiving at least one tool or at least one machine tool (5) is specified, which device comprises a guide rail (1), at least one unit (2) that can be moved along the guide rail (1), and at least one tool holder (3) that is directly or indirectly connected to the movable unit (2). At least one tool or at least one machine tool (5) can be connected to the device by means of at least one tool holder (3) in such a way that, by means of such a tool or such a machine tool (5), guided workpiece machining can be carried out along the longitudinal axis of the guide rail (1). The device is designed such that the movable unit (2) can be moved along the longitudinal axis of the guide rail (1) by means of at least one motor drive (16).

Description

[0001] The invention relates to a portable device for guiding at least one tool or at least one machine tool along a guide rail, according to the preamble of claim 1, which device is used in particular for guiding motor-operated hand-held power tools, for example designed as cut-off machines, drilling machines, milling machines, grinding machines, plasma cutters, saws, planers, multi-function tools or the like, wherein at least one tool or at least one machine tool can be connected to the device by means of at least one tool holder in such a way that, by means of such a tool or such a machine tool, guided workpiece machining can be carried out along the longitudinal axis of the guide rail.

[0002] A portable device for guiding at least one tool or at least one machine tool along a guide rail, in the sense of the present invention, describes a device which, due to its compact packing dimensions and its low overall weight, can be carried by one person and is thus suitable for mobile use.

[0003] Devices such as US2942633 or EP1418018 are known from the prior art, each of which comprises a guide rail along which a tool or a machine tool can be moved in a guided manner in order to carry out workpiece machining.

[0004] The devices known from the prior art usually comprise a guide rail that is placed on a part, which is usually also the workpiece, and are used to guide motor-driven hand-held power tools, particularly those designed as hand-held circular saws, plunge-cut saws, jigsaws, routers, or angle grinders. To prevent such a device from becoming detached from the support surface, the guide rail of the device can usually be fixed in configurations resting on the workpiece using at least one stop device.

[0005] Fixtures of this type, which enable tools or machine tools to be guided linearly along a guide rail, are primarily used in situations where on-site workpiece processing is required, such as on construction sites. This contrasts with their use in processing plants, where large quantities of workpieces are often processed in a short period of time. Furthermore, such fixtures enjoy great popularity among end users due to their compact design, low weight, and affordable purchase price.

[0006] The guided movement of the tool or machine tool along the longitudinal axis of the guide rail is initiated manually in the devices known from the state of the art. However, manual initiation of the movement of the tool or machine tool has numerous disadvantages compared to automated machining processes: Slower production speed: Manual work is generally slower than automated processes, resulting in longer processing times. Fatigue and error susceptibility: People become fatigued over the course of the workday, which can lead to decreased concentration and increased error susceptibility. This can impair the quality of the processed workpieces. Fluctuating quality: The quality of handmade products can fluctuate due to human variability. This leads to less consistency in the manufactured pieces. Health risks: Manual work can lead to health problems, especially when it requires physically strenuous or repetitive movements. Furthermore, manual processing places the operator in close proximity to the tool, which presents a potential safety hazard if, for example, it is used improperly or if unforeseen incidents occur. This can lead to lost work time and health costs. Another health risk is that the operator's close proximity to the tool exposes them to the material being removed. This material can generate dust or particles that, if inhaled, can enter the lungs, leading to respiratory problems and long-term health problems. There is also a risk that these particles could enter the eyes, causing eye irritation and injury.

[0007] Higher labor costs: Manual processing requires a larger workforce, resulting in higher labor costs. Automated systems can usually be operated with fewer personnel.

[0008] Some of these disadvantages could be eliminated by at least partially automating the processing process.

[0009] Against this background, the invention is based on the object of creating an improved device for guiding a tool or a machine tool along a guide rail, in which the guided movement of at least one tool or at least one machine tool along a guide rail takes place in a motor-driven manner, which can be used mobilely thanks to its compact dimensions and low weight and which allows an extension of the guide length of the guide rail along which the tool or the machine tool can be moved in a guided manner.

[0010] The above-mentioned object is achieved in a device of the type mentioned at the outset in that the device comprises a motor drive by means of which at least one tool or at least one machine tool can be moved along the guide rail, wherein the guide rail is designed such that it can be extended by at least one segment which increases the distance along which the displaceable unit can be moved in a guided manner, while the total weight of the device is less than 50 kg, less than 30 kg, less than 20 kg or less than 15 kg.

[0011] The device may, for example, comprise at least one movable unit whose total weight is less than 15 kg, less than 10 kg, less than 6 kg or less than 4 kg.

[0012] A motor drive that can move the movable unit along the guide rail can, in particular, be connected to the movable unit or integrated into it. Furthermore, the motor can drive at least one roller that is in contact with the guide rail or at least one element connected to the guide rail. Furthermore, the drive roller connected to the motor can represent at least part of the guide section connected to the movable unit, which forms part of the joint between the movable unit and the guide rail.

[0013] Due to the aforementioned properties, the specified device achieves increased work safety for the user and, thanks to the motor drive of the movable unit, offers a more consistent machining quality compared to the devices known from the state of the art.

[0014] The object of the invention is thus completely solved.

[0015] In an advantageous development of the invention, the motor drive, which can move the movable unit along the guide rail, can be equipped with control electronics that allow the user to adjust the direction of rotation and the rotation speed of the motor drive, and thus the feed direction and the feed speed of the movable unit along the longitudinal axis of the guide rail. This control electronics can, in particular, be designed such that the feed direction and the feed speed can be changed manually and without the use of tools.

[0016] Furthermore, the device can comprise at least one end-position sensor, which is preferably connected to the displaceable unit or integrated therein. Such an end-position sensor can, in particular, interact with the control electronics of the motor in such a way that the motor-driven movement of the displaceable unit stops after or as soon as the end-position sensor detects a nearby object. Such an end-position sensor can preferably comprise at least one proximity switch or at least one button. At least one end-position sensor can be connected to the displaceable unit in such a way that it detects at least one element connected to the guide rail, such as a longitudinal stop, as soon as the distance between the end-position sensor and the longitudinal stop falls below a defined threshold.

[0017] At least one end-of-travel sensor can include a sensitivity adjustment device. By changing the sensitivity of such an end-of-travel sensor, the maximum distance between the end-of-travel sensor and the element to be detected can be adjusted, at which the end-of-travel sensor triggers. A sensitivity adjustment device can, in particular, be designed so that the sensitivity can be changed manually and without the use of tools.

[0018] In particular, the device can comprise one or at least two end-position sensors. These end-position sensors can preferably be arranged on opposite sides of the displaceable unit and, for example, can be aligned such that they can detect objects in the direction of the longitudinal axis of the guide rail. Preferably, at least one end-position sensor can be connected to the displaceable unit in such a way that it can be fixed in various positions and / or orientations relative to the displaceable unit.

[0019] In an advantageous development of this embodiment, the motor drive of at least one tool or at least one machine tool can be connected to the control electronics in such a way that the control electronics shut off the motor drive of at least one tool or at least one machine tool after or as soon as at least one limit sensor detects a nearby object. Furthermore, the control electronics can be connected to the motor drive of at least one tool or at least one machine tool in such a way that the control electronics can be used to switch the motor drive of at least one tool or at least one machine tool on and off, as well as to adjust the speed.Furthermore, the control electronics can be designed in such a way that the motor drive of at least one tool or at least one machine tool is only switched off after the end position sensor has detected a nearby object and the motor drive, which moves the displaceable unit along the guide rail, has been stopped.

[0020] The motor drive of at least one tool or at least one machine tool can be switched on and off, for example, by switching the power supply of the tool or machine tool in question on or off.

[0021] In the context of the present invention, switching on such a power supply means that the power supply is energized, while switching off such a power supply describes a separation of the power supply from any voltage sources and thus no energization of the power supply takes place in the switched-off state.

[0022] The power supply of at least one tool or at least one machine tool can be connected, in particular, to the control electronics and the movable unit, or can be part of them. The control electronics can preferably be integrated into the movable unit or connected to it.

[0023] Furthermore, the power supply can comprise at least one plug connection capable of establishing an electrically conductive connection to the power supply of at least one tool or at least one machine tool. This plug connection can, in particular, comprise a socket and a plug. Preferably, at least one plug connection can be arranged on the rear of the movable unit. Since commercially available machine tools for domestic use usually have a grounding-contact plug, it is advisable to establish the power supply via a compatible socket or receptacle.

[0024] In particular, the power supply may comprise at least one grounded socket, which can be connected to the electrical connection of at least one tool or at least one machine tool. Such a grounded socket of the power supply may, for example, be connected to the movable unit or constitute part of it.

[0025] The guide rail of the present invention can be formed in one piece or in multiple pieces. Furthermore, a guide rail within the meaning of the present invention can comprise one or more elongated segments. At least two elongated segments of such a guide rail can, in particular, be arranged such that their longitudinal axes are aligned parallel to one another. In an advantageous development, the guide rail can comprise at least one segment, which can be connected to at least one further segment such that the resulting assembly increases the distance along which the displaceable unit can be guided.Furthermore, the guide rail of the present invention can comprise at least one segment, which can preferably be connected to any number of additional segments in order to increase the overall length of the guide rail and thus the guide length along which the displaceable unit can be moved in a guided manner. In particular, the guide rail can comprise at least two segments, which are connected by means of at least one connecting device such that their longitudinal axes are aligned parallel to one another, wherein at least one additional segment can be connected to the guide rail such that the resulting assembly increases the guide length along which the displaceable unit can be moved in a guided manner.

[0026] The guide rail can, in particular, have a higher bending resistance moment than the devices known from the prior art, and the combination of at least one tool or at least one machine tool, at least one displaceable unit and the guide rail is preferably designed such that it can withstand high torques occurring during machining and thus prevents the tool or the machine tool from being released from the guide even under high loads.

[0027] At least one tool or at least one machine tool is preferably connected to the other components of the device in such a way that the set cutting depth remains constant even under high forces and torques acting during the machining process.

[0028] This property can be achieved by making the joints between at least one tool or at least one machine tool and at least one tool holder, at least one tool holder and the displaceable unit, as well as between the displaceable unit and the guide rail more stable than in the devices known from the prior art.

[0029] In particular, the joining connections between at least one tool or at least one machine tool and at least one tool holder, between at least one tool holder and the displaceable unit, and between the displaceable unit and the guide rail can be designed in such a way that the tool or the machine tool can only be moved along the longitudinal axis of the guide rail and lifting of the tool or the machine tool is prevented as long as the components which form the said joining connections are in engagement with one another.

[0030] Preferably, the joints between at least one tool or at least one machine tool and at least one tool holder, between at least one tool holder and the displaceable unit, as well as between the displaceable unit and the guide rail can be designed such that, in the device resting on the workpiece as well as in cantilevered configurations, they can withstand a static torque of at least 20 Nm, further at least 50 Nm or at least 100 Nm acting for at least 60 seconds, without the guide play of at least one of the said joints increasing by more than 5%, without the angle of at least two parts of the device relative to each other changing by more than 5 degrees, and without any part of the device being plastically deformed in such a way that the distance between any two reference points of the said part changes by more than 1%,where changes in the specified distance of less than 0.1 mm are not taken into account.

[0031] These limit values ​​must be observed regardless of the axis and direction around which the specified torque acts on the respective joint, as well as regardless of the position of the movable unit relative to the guide rail, whereby, however, no part of the guide section connected to the movable unit projects longitudinally beyond the guide section connected to the guide rail.

[0032] In the context of the present invention, a cantilevered configuration of such a device means that at most the two ends of the guide rail which are at the greatest spatial distance from each other are fixed to other objects and the guide rail does not rest on other objects for a large part of its total length.

[0033] In the context of the present invention, configurations of the device resting on the workpiece mean arrangements of the device in which at least one part of the device, which is not part of the tool or the machine tool, touches the workpiece at at least three points.

[0034] In particular, the specified device can be designed such that it can be used in configurations resting on the workpiece, as well as in cantilevered configurations, and the permissible deflection of the guide rail in the specified configurations, due to a force of 100 N acting orthogonally to the longitudinal axis of the guide rail and acting at the center of the guide rail, is a maximum of 1%, further a maximum of 0.5%, in particular a maximum of 0.2% or a maximum of 0.1% of the total length of the guide rail. The total length of the guide rail describes the length in the direction of its greatest spatial extent.

[0035] The force vector of the force acting at the center of the guide rail lies in a plane which is aligned orthogonally to the longitudinal axis of the guide rail and is located, with a tolerance of a maximum of 1% of the total length of the guide rail, in the center of the guide rail, measured in the direction of its greatest spatial extent.

[0036] The maximum permissible deflection of the guide rail must be observed, regardless of the orientation of the specified force vector in this plane. Furthermore, the deflection in the plane in which the force vector lies, as well as in the direction of the force vector, must be determined.

[0037] These properties are achieved by using a guide rail with a high bending moment of resistance. In particular, a sufficiently high bending moment of resistance of such a guide rail can be achieved by using a guide rail with a larger cross-section than in conventional devices. Furthermore, the assembly consisting of at least one tool or at least one machine tool, the movable unit, and the guide rail is designed to withstand high torques and forces around all axes and in all directions.

[0038] Preferably, the device can be designed such that the aforementioned maximum permissible deflection of the guide rail is not exceeded in the event of the previously defined force being applied, even if the device is arranged in a cantilevered configuration in which the guide rail is not supported over a continuous section of at least 80% or at least 90% of its total length and a free space is created between the guide rail and at least one nearby object, into which free space a workpiece can be introduced and machined in the resulting position by means of at least one tool or at least one machine tool.

[0039] The guide rail of the specified invention can, for example, be designed such that the dimensions defining its cross-section are each at least 20 mm, in particular at least 30 mm, furthermore at least 40 mm, or at least 50 mm. The dimensions defining the cross-section, within the meaning of the present invention, include the overall height and the overall width of the cross-section. In particular, the guide rail can be designed as a hollow profile.

[0040] In the context of the present invention, a hollow profile means an element which comprises at least one hollow space.

[0041] By using a guide rail with a high bending resistance moment, the device of the specified invention can be used in configurations and orientations in which the use of known devices would not be practical due to the occurring deflection of the respective guide rail.

[0042] Furthermore, the guide rail can comprise at least one metal profile to achieve the desired properties. Preferably, the guide rail can comprise at least one profile with a wall thickness of at least 1 mm, at least 2 mm, or at least 3 mm.

[0043] Furthermore, the guide rail can, for example, comprise at least one profile produced by means of a pressure-forming manufacturing process, which preferably contains aluminum. In particular, such a profile can be an extruded aluminum profile.

[0044] To achieve good damping properties, the guide rail can be connected to at least one vibration damper. Such a vibration damper can, for example, have a filling made of a vibration-damping material or fluid, or comprise at least one plastic- or rubber-based element. In an advantageous development of this embodiment, at least one vibration damper can, for example, be detachably connected to the guide rail to enable adjustment of the damping properties.

[0045] In particular, the specified device can comprise at least one connecting device, or can be extended by such a device, which makes it possible to connect at least one segment of the guide rail with at least one further segment in such a way that the distance along which the displaceable unit can be guided is increased.

[0046] This connecting device of the present invention can preferably be designed to be so stable that a guide rail comprising a composite of at least two segments can be used in cantilevered configurations without the machining result being visibly impaired compared to configurations resting on the workpiece.

[0047] In particular, such a connecting device can be designed such that the permissible deflection of a guide rail comprising at least two connected segments, in configurations resting on the workpiece and in cantilevered configurations, due to a force of 100 N acting orthogonally to the longitudinal axis of the guide rail and acting at the center of the guide rail, amounts to a maximum of 1%, furthermore a maximum of 0.5%, in particular a maximum of 0.2% or a maximum of 0.1% of the total length of the guide rail. The total length of a guide rail comprising at least two connected segments describes the length in the direction of the greatest spatial extent of this assembly.

[0048] The force vector of the force acting at the center of the guide rail lies in a plane which is aligned orthogonally to the longitudinal axis of the guide rail and is located, with a tolerance of a maximum of 1% of the total length of the guide rail, in the center of the guide rail, measured in the direction of its greatest spatial extent.

[0049] The maximum permissible deflection of the guide rail must be maintained regardless of the orientation of the specified force vector in this plane. Furthermore, the deflection of the guide rail in the plane in which the force vector lies, as well as in the direction of the force vector, must be determined.

[0050] According to a further embodiment of the invention, the device can be designed such that the aforementioned maximum permissible deflection of the guide rail is not exceeded in the event of the previously defined force being applied, even if the device is arranged in a cantilevered configuration and a guide rail comprising at least two segments is not supported over a continuous section of at least 80% or at least 90% of its total length, but is arranged such that a free space is created between the guide rail and at least one nearby object, into which free space a workpiece can be inserted and machined in the resulting position using the tool or machine tool. The maximum permissible deflection is to be determined according to the aforementioned criteria.

[0051] Regardless of whether the fixture is placed directly on the workpiece or mounted cantilevered, a handling mechanism is provided in which the tool or machine tool is moved relative to the workpiece to perform machining. To perform linear machining along the guide rail, the tool or machine tool is moved along the guide rail.

[0052] The length of the guide rail is typically 500–3000 mm. In particular, the length of the guide rail can be approximately 500 mm to 1000 mm, further 1000 mm to 2000 mm, or 2000 mm to 3000 mm. Furthermore, the guide rail can comprise at least two interconnected segments, each of which has a length of 500 mm to 1000 mm or 1000 mm to 2000 mm in the direction of its greatest spatial extent.

[0053] The guide rail can comprise at least one groove, in particular designed as a T-slot, on at least one, further on at least two, in particular on at least three, or on at least four sides extending along its longitudinal axis, which groove is preferably formed parallel to the longitudinal axis of the guide rail. Furthermore, at least one such groove can represent a part of the guide section connected to the guide rail.

[0054] Furthermore, the segments of the guide rail can each comprise at least one groove, in particular designed as a T-groove, on at least one, further on at least two, in particular on at least three, or on at least four sides running along their longitudinal axis, which is formed parallel to the longitudinal axis of the respective segment.

[0055] According to a further embodiment of the invention, the connecting device, which serves to connect at least two segments of the guide rail, can be designed such that it engages in at least one of the grooves of the guide rail running in the longitudinal direction of the guide rail.

[0056] In particular, the joining connection between at least two interconnected segments of the guide rail can be designed such that no part of the connecting device protrudes beyond the cross-section of the guide rail.

[0057] Whereby not projecting beyond the cross-section of the guide rail in the sense of the present invention means that the total height and the total width of the combination of guide rail and at least one connecting device correspond to the total height and total width of the guide rail without the connecting device.

[0058] Furthermore, the specified device can comprise at least one longitudinal stop which limits the maximum travel path of the displaceable unit along the longitudinal axis of the guide rail.

[0059] In particular, the longitudinal stop can be designed so that it can be fixed in various positions along the longitudinal axis of the guide rail. Furthermore, the longitudinal stop comprises at least one stop section, which preferably protrudes beyond the cross-section of the guide rail and represents a mechanical stop for the displaceable unit in the direction of the longitudinal axis of the guide rail.

[0060] In particular, the longitudinal stop can comprise at least one element engaging in at least one groove, as well as at least one stop section extending beyond the cross-section of the guide rail. The longitudinal stop can, in particular, be designed such that it engages in at least one of the grooves running along the longitudinal axis of the guide rail.

[0061] At least one tool holder of the device can in particular be designed such that at least two, at least three, or at least four different types of tools or machine tools selected from the group consisting of: cutting machines, drilling machines, milling machines, grinding machines, plasma cutters, saws, planers or multi-function tools can be fixed relative to the displaceable unit in such a way that guided workpiece machining can be carried out along the longitudinal axis of the guide rail by means of the adapted tool or the adapted machine tool.

[0062] The parts of such a tool holder are henceforth referred to as connecting parts.

[0063] At least one tool holder can be connected directly or indirectly to the movable unit.

[0064] At least one tool holder of the device comprises at least one connecting part which can fix at least one tool or machine tool relative to the displaceable unit.

[0065] At least one tool holder of the device can comprise at least one connecting part that fixes at least one tool or at least one machine tool relative to the displaceable unit. Such a connecting part can be designed as a single piece or in multiple pieces. At least one connecting part can also be designed such that it can be replaced by one or more other connecting parts that enable the adaptation of at least one different type of tool or at least one different type of machine tool.

[0066] At least one connecting part of at least one tool holder of the device can in particular be designed such that at least two different types of tools or machine tools selected from the group consisting of: cutting grinders, drilling machines, milling machines, grinding machines, plasma cutters, saws, planers or multi-function tools can be adapted such that guided workpiece machining can be carried out along the guide rail by means of the adapted tool or the adapted machine tool.

[0067] Furthermore, at least one tool holder can be designed such that at least one tool or at least one machine tool can be fixed in different positions and / or positions relative to the displaceable unit.

[0068] In particular, at least one tool holder can comprise at least one adjustment device, by means of which the position of at least one adapted tool or at least one adapted machine tool relative to the displaceable unit can be changed. Such an adjustment device can in particular be designed such that the angle between at least one tool or at least one machine tool and the displaceable unit can be changed about at least one axis, further about at least two axes, or about three axes.

[0069] Such an adjustment device for changing the position of at least one tool or at least one machine tool relative to the displaceable unit can in particular comprise at least one threaded element or at least one eccentrically designed element.

[0070] In the context of the present invention, a threaded element means an element which comprises at least one external thread or at least one internal thread.

[0071] Such a threaded element of an adjustment device for changing the position of at least one tool or at least one machine tool relative to the displaceable unit can preferably have at least one stop surface against which at least one tool or at least one machine tool can be placed in order to define the angle between at least one tool or at least one machine tool and the displaceable unit. Furthermore, the position of the stop surface of such an adjustment device relative to the displaceable unit can be changed, in particular, by rotating the threaded element.

[0072] In order to enable adaptation of the geometry of at least one tool holder to the geometry of at least two tools or at least two machine tools, at least one connecting part of such a tool holder can be designed such that it can be fixed in different positions relative to the displaceable unit.

[0073] Such a tool holder can, for example, comprise at least one prism in order to fix cylindrically shaped tools or machine tools of different diameters.

[0074] Furthermore, the joint connection between at least one tool holder and at least one tool or at least one machine tool can be designed to be detachable without the use of tools, in order to enable a quick and convenient change of at least one adapted tool or at least one adapted machine tool. Such a tool holder can preferably comprise at least one clamping device, or be connected to one, which enables manual joining and releasing of the joint connection between the tool holder and at least one tool or at least one machine tool.

[0075] Such a clamping device can in particular comprise at least one threaded element, at least one spring-actuated clamping piece or at least one eccentrically designed element.

[0076] In particular, such a clamping device can comprise at least one threaded element connected to a handle in such a way that manual insertion and removal of the threaded element is possible without the use of tools. Furthermore, this handle can be designed as a knurled knob or polygonal handle.

[0077] In an advantageous further development of this embodiment, the joining connection between the tool holder and the movable unit can be designed in such a way that the loosening and joining of this joining connection, including the adapted tool or the adapted machine tool, can take place without the use of tools.

[0078] In particular, at least one tool holder, similar to the tool holder of an angle grinder, can be designed such that disc-shaped tools such as saw blades, grinding wheels, or cutting wheels can be secured and driven by a motor. Furthermore, at least one tool holder, similar to a jaw chuck, can be designed such that cylindrical tools of different diameters can be secured and driven by a motor. Furthermore, at least one tool holder can be designed similar to a collet chuck in order to achieve particularly high concentricity of the tool.

[0079] Furthermore, the device may comprise at least one device for adjusting the cutting depth. The cutting depth can be adjusted by means of such a device, preferably manually or by motor.

[0080] By means of such a cutting depth adjustment device, the height of the tool or machine tool relative to the workpiece can preferably be adjusted. In particular, by means of such a cutting depth adjustment device, the height of the tool holder, including the adapted tool or the adapted machine tool, can be adjusted relative to the workpiece and / or the guide rail.

[0081] At least one tool holder can be connected to the movable unit or formed as part thereof, wherein the device for adjusting the cutting depth can also be connected to the movable unit or form a part thereof.

[0082] For example, such a device for adjusting the cutting depth can comprise at least one guide element and at least one clamping device, by means of which at least one tool holder can be fixed in its respective height relative to the workpiece. The clamping device of the device for adjusting the cutting depth can preferably be designed such that it fixes at least one tool holder in its respective height relative to the displaceable unit by means of at least one force-locking joint.

[0083] This clamping device can in particular comprise at least one threaded element, at least one spring-actuated clamping piece or at least one eccentrically designed element.

[0084] In particular, such a clamping device can comprise at least one threaded element connected to a handle in such a way that manual insertion and removal of the threaded element is possible without the use of tools. Furthermore, this handle can be designed as a knurled knob or polygonal handle.

[0085] Such a handle can, for example, be connected to at least one threaded element in such a way that the joint between the handle and the threaded element can be separated by lifting the handle in such a way that the handle can be rotated without the threaded element rotating as a result.

[0086] The guide element of such a device for adjusting the cutting depth can be designed, for example, as a linear guide or as a guide axis arranged eccentrically relative to the tool holder. A linear guide for adjusting the height of the tool holder can, for example, comprise at least one linear rail and at least one guide carriage, at least one shaft guide, or at least one dovetail guide. Furthermore, at least one guide axis arranged eccentrically relative to at least one tool holder can be connected to the displaceable unit, for example, in such a way that it represents a rotation axis about which at least one tool holder can be pivoted downwards or upwards relative to the workpiece.

[0087] A pivoting mechanism which allows the user to adjust the height of at least one tool holder by rotating it about at least one eccentrically arranged axis of rotation can, for example, comprise at least one carrier which is connected to at least one tool holder or forms part of it and pivots together with this tool holder about an axis of rotation which is fixed relative to the displaceable unit. This pivoting mechanism can further comprise at least one lever by means of which the cutting depth can be adjusted manually. Furthermore, such a pivoting mechanism can comprise at least one threaded element or at least one toothed element which is connected to at least one tool holder or to an element which is fixed relative to at least one tool holder.At least one tool holder or at least one element fixed relative to the tool holder can preferably be connected to at least one threaded element in such a way that the height of the tool holder can be adjusted by rotating the threaded element. At least one toothed element connected to the tool holder or to at least one element fixed relative to a tool holder can in particular be designed as a gear and, for example, represent the output gear, while at least one further toothed element such as a worm gear can represent the drive gear for initiating the pivoting movement of the tool holder. For example, the pivoting movement of the tool holder can be initiated by rotating such a toothed drive gear in order to adjust its height relative to the displaceable unit.Furthermore, such a pivoting mechanism for adjusting the cutting depth can comprise at least one clamping device by means of which the tool holder can be fixed in its respective height position relative to the displaceable unit.

[0088] Furthermore, the device for adjusting the cutting depth can comprise at least one linear guide, at least one driving toothed element, and at least one driven toothed element for adjusting the height of the tool holder along the longitudinal axis of this linear guide. At least one driven toothed element can be designed, in particular, as a rack.

[0089] At least one such rack can be aligned, in particular, parallel to the longitudinal axis of at least one linear guide involved in adjusting the cutting depth. Furthermore, such a rack can be connected to the tool holder or to at least one element that is stationary relative to at least one tool holder. At least one driving toothed element, such as a gear or worm wheel, can engage with the toothing of at least one rack and be connected, for example, to the displaceable unit, or be stationary relative to the displaceable unit. Furthermore, at least one rack can be connected to the displaceable unit, while at least one driving toothed element, which engages with the toothing of this rack, can be connected to the tool holder.In both embodiments, rotation of the driving toothed element can initiate movement of the tool holder along the longitudinal axis of the said linear guide. The toothed element, which in such a configuration represents the drive wheel, can be designed, for example, as a gear or worm gear. Furthermore, the device can comprise at least one clamping device, which secures the position of the tool holder against linear movement along the longitudinal axis of the linear guide of the device for adjusting the cutting depth by fixing at least one element connected to the tool holder in its position relative to the displaceable unit by means of a preferably force-fitting joint. This clamping device can in particular be designed such that the tool holder can be fixed in its respective vertical position without tools. For this purpose, the clamping device can preferably comprise a handle.

[0090] This handle can, for example, be connected to at least one threaded element in such a way that the joint between the handle and the threaded element can be separated by lifting the handle, allowing the handle to be rotated without causing the threaded element to rotate. In particular, the handle can have at least one clamping lever and / or at least one polygonal grip.

[0091] A linear guide for adjusting the cutting depth can, in particular, be designed such that at least one of the guide sections involved in the positive-locking joint has at least one engagement section, while the corresponding guide section has at least one raised guide element that projects into this engagement section. At least one engagement section involved in the positive-locking joint can preferably comprise at least one groove.

[0092] Preferably, at least one of the guide sections involved in the positive joining connection of the linear guide for adjusting the cutting depth can comprise at least one raised guide element which projects into at least one groove of the corresponding guide section.

[0093] At least one raised guide element, a linear guide, the device for adjusting the cutting depth, can be designed, for example, as a sliding carriage, roller or runner.

[0094] A sliding carriage in the sense of the present invention represents at least one part of a unit that can be displaced along the guide rail, a sliding guide. In particular, such a sliding carriage can comprise at least one linear plain bearing.

[0095] In the context of the present invention, a roller describes a body which has a round cross-section and is disc-shaped or cylindrical.

[0096] In the sense of the present invention, a runner describes a body which comprises at least one sliding surface and is in particular elongated.

[0097] Preferably, the engagement section of the linear guide of the device for adjusting the cutting depth can comprise at least two grooves arranged on opposite sides of the guide section. Furthermore, at least two grooves of the engagement section can be arranged such that their openings are formed in opposite directions. At least one raised guide element of the corresponding guide section can be designed such that it engages in at least one or at least two of these grooves. Furthermore, at least two raised guide elements can be designed such that they each engage in at least one or at least two grooves.

[0098] Preferably, at least one raised guide element of the linear guide for adjusting the cutting depth is shaped such that it engages positively in at least one or at least two grooves of the corresponding guide section. In an advantageous development of this embodiment, the linear guide can comprise at least one device for adjusting the engagement depth of at least one raised guide element in at least one engagement section of the corresponding guide section.

[0099] The joining connection of the linear guide, the device for adjusting the cutting depth, can be designed such that the guide play of this joining connection can be adjusted by changing the distance between at least two parts, at least one guide section involved in this joining connection. In particular, the guide play of this joining connection can be adjusted by changing the distance between at least two raised guide elements.

[0100] Furthermore, the guide clearance can be adjusted by changing the clearance between at least two raised guide elements. At least one adjustable part of the guide section can be arranged, in particular, on the side of the device facing away from the tool holder. At least one of the guide sections of a linear guide, the device for adjusting the cutting depth, can, for example, comprise concave or convex elements.

[0101] Such a raised guide element can comprise at least one or at least two guide surfaces, wherein a guide surface within the meaning of the present invention describes a surface that touches at least one element of a corresponding guide section. Furthermore, such a raised guide element can comprise at least one spherically shaped or at least two mirror-symmetrically arranged guide surfaces that are not aligned parallel to one another.

[0102] In particular, such a raised guide element can comprise at least two guide surfaces that are not aligned parallel to one another and are preferably arranged on opposite sides of the raised guide element. Furthermore, at least two guide surfaces of at least one raised guide element can form a wedge.

[0103] In addition, the linear guide for adjusting the cutting depth can be designed such that the distance between at least one guide surface of the raised guide element and at least one guide surface of the corresponding guide section can be adjusted.

[0104] For example, the distance between at least two corresponding guide surfaces of the linear guide can be adjusted to adjust the cutting depth by changing the engagement depth of at least one raised guide element in at least one engagement part of the corresponding guide part.

[0105] This change in the engagement depth and / or the distance between the corresponding guide surfaces can be achieved by means of at least one adjusting piece. Such an adjusting piece can, for example, comprise at least one threaded element and / or at least one eccentrically designed element as well as at least one clamping device. This clamping device can, for example, comprise at least one force-locking joint, by means of which at least one adjusting piece can be fixed in its respective position. Furthermore, the clamping device can be designed such that it can fix the position of at least one raised guide element relative to the displaceable unit or relative to the tool holder.

[0106] Furthermore, such a clamping device can in particular comprise at least one threaded element, at least one spring-actuated clamping piece or at least one eccentrically designed element.

[0107] In a further embodiment of this embodiment, at least one guide surface of at least one raised guide element can be aligned parallel to at least one guide surface of the corresponding engagement part.

[0108] In particular, at least one of the guide sections involved in the linear guide of the device for adjusting the cutting depth can comprise at least one runner that positively engages at least one engagement section of the corresponding guide section. Such a runner can have at least one guide surface aligned parallel to at least one guide surface of the engagement section.

[0109] Furthermore, such a runner can comprise at least one spherically shaped or at least two mirror-symmetrically arranged guide surfaces that are not aligned parallel to each other. At least two guide surfaces of the runner can be designed such that the distance between the guide surfaces decreases or increases in the direction of the engagement section, the corresponding guide section.

[0110] The portion of such a runner that extends into the engagement portion of the corresponding guide portion can, for example, have an inclination in the direction of the engagement portion of the corresponding guide portion. The guide surfaces of such a runner can, in particular, be designed such that the portion of the runner that extends into the engagement portion of the corresponding guide portion forms a wedge, with at least two guide surfaces forming the opposite sides of the wedge. The inclination of the guide surfaces of such a runner can, in particular, be designed such that the portion of the runner with the greatest penetration depth into at least one engagement portion of the corresponding guide portion has the minimum distance between the guide surfaces.

[0111] Furthermore, at least one runner of the device for adjusting the cutting depth can comprise at least one engagement section, wherein the corresponding guide section can have at least one raised guide element. The engagement section of the runner can comprise at least one groove, while the raised guide element of the corresponding guide section can comprise at least one element that positively engages this groove. Such a raised guide element can comprise at least one spherical or cylindrical element.

[0112] In a further embodiment of the invention, the linear guide of the device for adjusting the cutting depth can have at least one guide section comprising at least one roller that interacts positively with at least one element of the corresponding guide section. Such a roller can, in particular, be designed to at least partially engage with at least one engaging section of the corresponding guide section.

[0113] Furthermore, such a roller can, for example, comprise a spherically shaped outer surface, which represents the guide surface. Furthermore, such a roller can comprise at least two mirror-symmetrical guide surfaces that are not aligned parallel to one another. At least two guide surfaces of such a roller can be designed such that their distance from one another decreases or increases in the direction of the corresponding guide section.

[0114] Such a roller can, in particular, be shaped such that its outer diameter tapers towards the end faces. At least one roller of at least one guide section of the device for adjusting the cutting depth can comprise, or be connected to, at least one adjusting piece for adjusting the engagement depth in the engagement section of the corresponding guide section. In particular, such an adjusting piece can comprise at least one eccentrically designed element or a threaded element. Such an adjusting piece can preferably be connected to a clamping device, by means of which the adjusting piece and / or at least one roller connected to an adjusting piece can be fixed in its respective position.

[0115] Such an adjusting piece can comprise at least one cylindrically shaped element, the axis of symmetry of which represents the axis of rotation for adjusting the engagement depth of at least one adjustable roller into the engagement part of the corresponding guide part.

[0116] Furthermore, such an adjustment piece can comprise at least one element eccentrically configured relative to the rotational axis of the adjustment piece, by means of which at least one roller of at least one guide section of the device for adjusting the cutting depth is aligned. Such an eccentrically configured element of an adjustment piece can be designed, for example, as a bore, axle, or pin. Furthermore, the axis of symmetry of such an eccentrically configured element of at least one adjustment piece can be aligned parallel to the rotational axis of the adjustment piece.

[0117] In particular, at least one roller of at least one guide section of the device for adjusting the cutting depth can be aligned coaxially with at least one eccentrically formed element of such an adjusting piece.

[0118] In particular, such an adjusting piece can be designed as a bushing with an eccentric bore, wherein at least one roller can be aligned coaxially to the eccentric bore of such an adjusting piece.

[0119] Furthermore, the axis of symmetry of at least one eccentric bore of such an adjusting piece designed as a bushing can be aligned parallel to the axis of rotation of the adjusting piece.

[0120] Such an adjusting piece can be connected to the displaceable unit in such a way that the position of the eccentric bores of the adjusting piece, relative to the displaceable unit, relative to at least one tool holder or relative to at least one adapter piece, can be changed by rotating the adjusting piece.

[0121] The adjustable rollers can be secured in their respective positions relative to the movable unit, relative to at least one tool holder, or relative to at least one adapter piece by securing the adjusting piece connected to the respective roller relative to at least one element connected to the adjusting piece. Such an adjusting piece can be secured, for example, by a clamping device.

[0122] Such a clamping device can in particular comprise at least one threaded element, at least one spring-actuated clamping piece or at least one eccentrically designed element in order to fix at least one adjusting piece by means of a preferably force-locking joining connection relative to the displaceable unit, relative to at least one tool holder or relative to at least one adapter piece.

[0123] At least one adjustable roller, at least one guide section of the device for adjusting the cutting depth, can be detachably connected to an adjustment piece. The joint between the respective assembly consisting of at least one roller and at least one adjustment piece can preferably be designed such that the joint between the roller and adjustment piece does not need to be released to adjust the engagement depth of the respective roller.The respective assembly consisting of at least one roller and at least one adjusting piece can preferably be designed such that adjustments of the engagement depth of at least one adjustable roller, of at least one guide section of the device for adjusting the cutting depth, in at least one engagement section of the corresponding guide section can be made, insofar as the joining connection between the respective adjusting piece and the displaceable unit, at least one tool holder or at least one adapter piece is released such that the respective adjusting piece can rotate in a mounted manner. The adjustable rollers can be locked in their respective positions by fixing the adjusting piece connected to the respective roller relative to the displaceable unit, relative to at least one tool holder or relative to at least one adapter piece.

[0124] At least one adjusting piece can have at least two surfaces that are aligned parallel to one another and whose surface normals point in opposite directions. These parallel surfaces of such an adjusting piece can, in particular, be designed such that a supported rotation of the adjusting piece can be initiated using an open-end wrench. This property can be achieved by such an adjusting piece comprising at least one segment whose cross-section forms a regular polygon. In particular, at least one adjusting piece can comprise at least one segment with a four-, six-, or eight-sided cross-section.

[0125] Furthermore, at least one guide section of the linear guide of the device for adjusting the cutting depth can comprise at least three rollers. Preferably, at least two or at least three rollers can be arranged such that their rotation axes are aligned parallel to each other. In particular, at least two of these rollers can be designed to be stationary relative to the respective element to which they are connected, while at least one roller can be designed to be adjustable in its position relative to the stationary rollers.

[0126] The joint for securing such an adjustable roller relative to the respective element to which it is connected can, in particular, be designed to be frictionally connected. Furthermore, such a roller can comprise at least one plain bearing or at least one rolling bearing. In particular, one of the guide sections involved in the linear guide of the device for adjusting the cutting depth can comprise at least one rolling bearing with a profiled outer ring.

[0127] In a further embodiment of the invention, at least one guide section of the device for adjusting the cutting depth can comprise at least four rollers. Preferably, at least four rollers can be arranged such that their axes of rotation are aligned parallel to one another. In particular, at least two of these rollers can be designed to be fixed relative to the respective element to which they are connected, while at least two rollers can be designed to be adjustable in their position relative to the fixed rollers. At least two of the adjustable rollers can be arranged, in particular, on the side of the device facing away from the tool holder.

[0128] The position of at least one adjustable roller can be adjusted using at least one adjusting piece. Such an adjusting piece can, for example, have at least one threaded element or at least one eccentrically designed element. Furthermore, the joint for securing at least one adjustable roller can preferably be designed to be force-locking.

[0129] In a further refinement of this embodiment, at least one guide section of the device for adjusting the cutting depth can comprise at least one roller having at least one groove. At least one corresponding guide section can comprise at least one raised guide element that engages in at least one groove of at least one roller. Such a raised guide element of the corresponding guide section can comprise at least one crowned or cylindrical element to form a positive-locking joint with at least one groove of at least one roller.

[0130] Such a roller with at least one groove can, for example, have at least one V-shaped or at least one U-shaped groove on its outer surface. Furthermore, such a roller with at least one groove can comprise at least two mirror-symmetrical guide surfaces that are not aligned parallel to one another. At least two guide surfaces of such a roller can be designed such that their distance from one another decreases or increases in the direction of the corresponding guide section.

[0131] In particular, such a roller with at least one groove can be shaped such that its outer diameter tapers towards the center. At least one roller with at least one groove of a guide section of the device for adjusting the cutting depth can be designed to be adjustable in its position relative to the corresponding guide section. In particular, at least one roller with at least one groove can comprise at least one adjusting piece or be connected to such an adjusting piece. In particular, such an adjusting piece can comprise at least one eccentrically designed element or a threaded element.

[0132] Furthermore, at least one guide section of the device for adjusting the cutting depth can comprise at least three rollers, each with at least one groove. Preferably, at least two of these rollers can be arranged such that their rotation axes are aligned parallel to each other. In particular, at least two of these rollers can be designed to be stationary relative to the respective element to which they are connected, while at least one roller can be designed to be adjustable in its position relative to the stationary rollers.

[0133] The joint between at least one adjustable roller with at least one groove and the respective element connected to the roller, the device for adjusting the cutting depth, can in particular be designed to be frictionally engaged. Furthermore, such a roller can comprise at least one plain bearing or at least one rolling bearing. In particular, at least one guide section of the device for adjusting the cutting depth can comprise at least one rolling bearing with a profiled outer ring. The outer ring of such a rolling bearing can, for example, have at least one V-shaped or at least one U-shaped groove.

[0134] In a further embodiment of the invention, at least one guide section of the device for adjusting the cutting depth can comprise at least four rollers, each with at least one groove. Preferably, at least four rollers, each with at least one groove, can be arranged such that their rotation axes are aligned parallel to one another. In particular, at least two of these rollers can be designed to be stationary relative to the respective element to which they are connected, while at least two rollers can be designed to be adjustable in their position relative to the stationary rollers.

[0135] The position of at least one adjustable roller with at least one groove can be adjusted using at least one adjusting piece. Such an adjusting piece can, for example, comprise at least one threaded element or at least one eccentrically designed element. Furthermore, the joint for locking the rollers in their respective positions can preferably be designed to be force-locking.

[0136] The device for adjusting the cutting depth can comprise at least one linear guide for adjusting the height of the tool holder, which comprises at least one linear rail and at least one corresponding guide carriage. In particular, the linear guide for adjusting the height of the tool holder can comprise at least one recirculating ball bearing guide. The guide carriage can, for example, be connected to the tool holder, while the linear rail represents part of the displaceable unit or can be connected to it. In a further embodiment, at least one linear rail of the linear guide for adjusting the height of the tool holder can be connected to the tool holder or represent part of it, while at least one guide carriage represents part of the displaceable unit or can be connected to it.Furthermore, the linear rail of the linear guide can comprise at least one guide shaft for adjusting the height of the tool holder.

[0137] Furthermore, a linear guide of the device for adjusting the cutting depth can comprise at least one dovetail guide.

[0138] In an advantageous development of the specified invention, the device can comprise, in addition to the device for adjusting the cutting depth, a device for limiting the maximum cutting depth, which allows the user to reproduce a previously set cutting depth with high repeatability. The device for limiting the maximum cutting depth can preferably be connected to the movable unit and / or the tool holder.

[0139] In particular, the device for limiting the maximum cutting depth can be designed in such a way that a previously set cutting depth can be reproduced even if a different cutting depth setting has been made in the meantime.

[0140] This property can be achieved if the device for limiting the maximum cutting depth comprises at least one stop piece which is designed in such a way that the minimum distance between the tool or the machine tool and the workpiece surface can be limited with repeatable accuracy by means of this stop piece.

[0141] Such a stop piece can preferably comprise at least one element that forms a mechanical stop for the tool holder or at least one element connected to the tool holder and limits the minimum adjustable height of the tool holder. In particular, this stop piece can be adjusted in height and fixed in the desired position to limit the maximum cutting depth. Preferably, the device for limiting the maximum cutting depth is designed to limit the maximum cutting depth and simultaneously enable a variety of settings that result in smaller cutting depths.

[0142] In order to prevent unintentional adjustment of the stop piece, the device for limiting the maximum cutting depth can comprise at least one counter element by means of which the position of the stop part of the stop piece relative to the displaceable unit and / or the tool holder can be defined.

[0143] To enable the most precise adjustment of the maximum cutting depth, the device for limiting the maximum cutting depth can, for example, have at least one threaded element that changes the maximum adjustable cutting depth per revolution of the named threaded element by a defined amount. Such a threaded element can be connected to at least one stop piece or be formed as part of at least one stop piece. In particular, such a threaded element can be designed as an external thread.

[0144] In an advantageous further development of this embodiment, the device for limiting the maximum cutting depth can, for example, have at least one marking which allows the user to determine the degree by which the threaded element is adjusted.

[0145] Preferably, at least one threaded element of the device for limiting the maximum cutting depth comprises at least one marking which is arranged on the top or back of the device in order to ensure good readability.

[0146] At least one counter element of the device for limiting the maximum cutting depth can in particular have a threaded element which preferably comprises an internal thread.

[0147] In an advantageous development of this embodiment, at least one stop element of the device for limiting the maximum cutting depth can be connected to at least one handle in such a way that its height can be adjusted without tools using this handle. To ensure tool-free adjustment of at least one counter element, this counter element can also be connected to at least one handle.

[0148] The marking, which enables the user to adjust the threaded element by an exact degree, can, for example, be applied to a handle connected to at least one stop piece.

[0149] Furthermore, the device for limiting the maximum cutting depth can be designed such that at least one stop piece can be completely removed from the device and replaced with at least one other stop piece. By changing the stop piece, at least two previously defined cutting depth settings can be reproduced. Preferably, at least one stop piece, including at least one corresponding counter element, can be removed from the device without having to release the joint between the respective stop piece and counter element.

[0150] In particular, at least one stop piece can be designed so that it can be removed from the device without the need for tools. Furthermore, the device for limiting the maximum cutting depth can be designed so that at least one stop piece, including at least one corresponding counter element, can be removed from the device without the need for tools, without changing the relative position of the counter element to the respective stop piece in order to be able to reproduce the set cutting depth later.

[0151] The device for limiting the maximum cutting depth can further comprise at least one clamping device which allows the user to join at least one stop piece to the device without tools and to separate it from the device without tools.

[0152] This property can be achieved by connecting at least one stop piece, including at least one counter element, to the displaceable unit or the tool holder by means of at least one manually operable clamping device. Such a clamping device can preferably be designed such that the stop piece can be joined to or separated from the displaceable unit or the tool holder without the use of tools. Furthermore, such a clamping device can connect at least one stop piece, including at least one counter element, to the tool holder and / or the displaceable unit by means of a force-fitting joint. In particular, such a clamping device can comprise at least one threaded element, at least one spring-actuated clamping piece, or at least one eccentrically designed element.Furthermore, such a clamping device can comprise at least one clamping lever and / or at least one handle. Such a handle can be designed, in particular, as a knurled knob, polygonal handle, or clamping lever.

[0153] This handle can, for example, be connected to at least one threaded element in such a way that the joint between the handle and the threaded element can be separated by lifting the handle in such a way that the handle can be rotated without the threaded element rotating as a result.

[0154] Furthermore, the device for limiting the maximum cutting depth can preferably be arranged on a side of the device facing away from the tool holder, so that the user can adjust the cutting depth without working in the immediate vicinity of the tool or the machine tool.

[0155] In particular, the device for limiting the maximum cutting depth can be arranged on the back or on the top of the device.

[0156] In a further embodiment of the invention, the device can have at least one display element that indicates the set cutting depth. Such a display element can be designed, in particular, as a scale, ruler, scale, digital display, or display to allow the user to determine the set cutting depth using numerical values.

[0157] The display element is preferably arranged on a side of the device facing away from the tool holder, in particular on the rear side or on the top side of the device.

[0158] Preferably, the display element and the device for limiting the maximum cutting depth can be arranged on the same side of the device.

[0159] In an advantageous further development, such a display element can be designed in such a way that each height position of the tool holder between the two end positions of the device for adjusting the cutting depth can be defined as the zero point, so that the user can read the cutting depth relative to the defined zero point.

[0160] To define the zero point, the device can comprise at least one operating element by means of which the current height position of the tool or the machine tool can be defined as the zero point.

[0161] Furthermore, the device can comprise at least one operating element which serves as a signal generator to indicate the cutting depth in at least one other unit of measurement by means of at least one display element.

[0162] In particular, such an operating element can comprise at least one button or at least one pushbutton, which is preferably arranged near the display element to facilitate operation. Such a button or pushbutton can be arranged, for example, next to or below the display element.

[0163] Furthermore, the display element can be designed as a display, whereby changes in the cutting depth can preferably be displayed in 0.5 mm, 0.25 mm, further 0.2 mm or 0.1 mm steps.

[0164] Such a display element can, in particular, be designed such that cutting depth settings which, relative to the defined zero point, result in greater cutting depths are displayed as negative numerical values, while settings which result in smaller cutting depths relative to the defined zero point are displayed as positive numerical values. Such a display element can, furthermore, be designed such that cutting depth settings which, relative to the defined zero point, result in greater cutting depths are displayed as positive numerical values, while settings which result in smaller cutting depths relative to the defined zero point are displayed as negative numerical values.

[0165] To determine the change in cutting depth, the device may comprise at least one sensor and / or a glass scale and / or a linear encoder.

[0166] The device can, for example, be designed such that cutting depth changes are determined by means of at least one inductive sensor and / or at least one capacitive sensor and / or at least one optoelectronic sensor and / or at least one ultrasonic sensor and / or at least one Hall sensor and / or at least one inductive linear encoder and / or at least one capacitive linear encoder.

[0167] Preferably, such a sensor can be arranged fixedly relative to the displaceable unit or relative to the tool holder.

[0168] In particular, the device may comprise at least one light sensor and / or at least one inductive linear encoder and / or at least one capacitive linear encoder to detect changes in the cutting depth.

[0169] The linear guide for guiding at least one tool or at least one machine tool along the longitudinal axis of the guide rail can comprise at least two guide sections, which preferably form a positive-locking joint.

[0170] This joining connection between the displaceable unit and the guide rail can in particular be designed such that at least one of the guide parts involved in the joining connection has at least one engagement part, while the corresponding guide part has at least one raised guide element which projects at least partially into the engagement part.

[0171] Preferably, the guide section connected to the displaceable unit has at least one raised guide element that extends at least partially into at least one engagement section of the guide section connected to the guide rail. The engagement section of the guide section connected to the guide rail can, in particular, comprise at least one groove formed parallel to the longitudinal axis of the guide rail.

[0172] At least one raised guide element of the guide section connected to the displaceable unit can be designed as a sliding carriage, roller, or runner, wherein at least one engagement section of the guide section connected to the guide rail can comprise at least one groove. In particular, such a sliding carriage can comprise at least one linear plain bearing.

[0173] Preferably, such an engagement part of the guide part connected to the guide rail can comprise at least two grooves, which are preferably arranged on opposite sides of the guide rail. Furthermore, at least two grooves of the engagement part can be arranged such that their openings are formed in opposite directions. At least one raised guide element of the guide part connected to the displaceable unit can, for example, engage in at least one or at least two of the grooves of the corresponding engagement part. Preferably, the guide part connected to the displaceable unit comprises at least two raised guide elements, which are shaped such that they each engage positively in at least one groove of the guide part connected to the guide rail.In an advantageous further development of this embodiment, the device can comprise a device for adjusting the engagement depth of at least one raised guide element into at least one engagement part of the corresponding guide part.

[0174] The joint between the movable unit and the guide rail can be designed such that the guide play of this joint can be adjusted by changing the distance between at least two parts of the guide section connected to the movable unit. In particular, the guide play can be adjusted by changing the clearance between at least two raised guide elements of the guide section connected to the movable unit, which engage in the engagement section of the guide section connected to the guide rail. At least one adjustable part of the guide section connected to the movable unit can be arranged, in particular, on the side of the device facing away from the tool holder.

[0175] At least one raised guide element of the guide section connected to the displaceable unit can, for example, comprise concave or convex shaped elements.

[0176] Such a raised guide element can have at least one or at least two guide surfaces. Furthermore, at least one guide surface of at least one raised guide element can be crowned.

[0177] In particular, such a raised guide element can comprise two guide surfaces that are not aligned parallel to each other and are preferably arranged on opposite sides of the raised guide element. Furthermore, the guide surfaces of such a raised guide element can be aligned, for example, mirror-symmetrically.

[0178] In particular, at least two guide surfaces of at least one raised guide element can form at least one wedge.

[0179] Furthermore, such a raised guide element can be designed such that the distance between at least one guide surface of the raised guide element and at least one guide surface of the corresponding guide section can be adjusted.

[0180] For example, the distance between the corresponding guide surfaces of at least two guide sections can be adjusted by changing the engagement depth of at least one raised guide element of the guide section connected to the displaceable unit into at least one engagement section of the guide section connected to the guide rail.

[0181] This change in the engagement depth and / or the distance between the corresponding guide surfaces can be achieved by means of at least one adjusting piece. Such an adjusting piece can comprise a threaded element or an eccentrically designed element. To secure at least one raised guide element and / or at least one adjusting piece in the respective position, at least one guide section can comprise at least one clamping device or be connected to such a device. Such a clamping device can, for example, comprise at least one force-fitting joint. Furthermore, such a clamping device can, in particular, comprise at least one threaded element, at least one spring-actuated clamping piece, or at least one eccentrically designed element.

[0182] In a further embodiment of this embodiment, at least one guide surface of at least one raised guide element can be aligned parallel to at least one guide surface of the corresponding guide section.

[0183] In particular, the guide part connected to the displaceable unit can comprise at least one runner which engages positively in at least one engagement part of the guide part connected to the guide rail.

[0184] Furthermore, such a runner can comprise at least two mirror-symmetrical guide surfaces that are not aligned parallel to each other. At least two guide surfaces of such a runner can be designed such that the distance between the guide surfaces decreases or increases in the direction of the engagement section, the guide section connected to the guide rail. At least one guide surface of such a runner can, for example, be aligned parallel to at least one guide surface, the guide section connected to the guide rail.

[0185] The portion of such a runner which projects into the engagement portion of at least one guide portion connected to the guide rail can, for example, have an inclination in the direction of the engagement portion. The guide surfaces of such a runner can, in particular, be designed such that the portion of the runner which projects into the engagement portion of the corresponding guide portion forms a wedge, with at least two guide surfaces forming the opposite sides of the wedge. The inclination of the guide surfaces of such a runner of the guide portion connected to the displaceable unit can, in particular, be designed such that the portion of the runner with the greatest penetration depth into the engagement portion of the guide portion connected to the guide rail has the minimum distance between the guide surfaces.

[0186] Furthermore, the guide section connected to the movable unit can comprise at least one roller that engages with at least one engagement section of the guide section connected to the guide rail. At least one such roller can be shaped in such a way that a positive connection with the corresponding engagement section is created.

[0187] Furthermore, such a roller can, for example, comprise a spherically shaped outer surface, which represents the guide surface. Furthermore, such a roller can comprise at least two mirror-symmetrical guide surfaces that are not aligned parallel to each other. At least two guide surfaces of such a roller can be designed such that their distance from each other decreases or increases in the direction of the corresponding guide section.

[0188] In particular, such a roller can be shaped such that its outer diameter tapers towards the end faces. At least one roller of the guide section connected to the displaceable unit can comprise, or be connected to, at least one adjusting piece for adjusting the engagement depth in the engagement section of the corresponding guide section. In particular, such an adjusting piece can comprise at least one eccentrically designed element or a threaded element.

[0189] Furthermore, the guide section connected to the displaceable unit can comprise at least three rollers. Preferably, at least two or at least three rollers can be arranged such that their rotational axes are aligned parallel to one another. In particular, at least two of these rollers can be designed to be stationary relative to the displaceable unit, while at least one roller can be designed to be adjustable in its position relative to the fixed rollers. At least one adjustable roller of the guide section connected to the displaceable unit can be arranged, in particular, on the side of the device facing away from the tool holder.

[0190] The joint for securing at least one adjustable roller relative to the displaceable unit can, in particular, be designed to be frictionally connected. Furthermore, such a roller can comprise at least one plain bearing or at least one rolling bearing. In particular, the guide section connected to the displaceable unit can comprise at least one rolling bearing with a profiled outer ring.

[0191] In a further embodiment of the invention, the guide section connected to the displaceable unit can comprise at least four rollers. Preferably, at least four of these rollers can be arranged such that their rotation axes are aligned parallel to one another. In particular, at least two of these rollers can be designed to be fixed relative to the displaceable unit, while at least two rollers can be adjusted in their position relative to the displaceable unit. At least two adjustable rollers of the guide section connected to the displaceable unit can be arranged, in particular, on the side of the device facing away from the tool holder.

[0192] The position of at least one adjustable roller can be adjusted using at least one adjusting piece. Such an adjusting piece can, for example, have at least one threaded element or at least one eccentrically designed element. Furthermore, the joint for securing such an adjustable roller in its respective position can preferably be designed to be force-locking.

[0193] In a further embodiment of the invention, the guide section connected to the displaceable unit can comprise at least one roller having at least one groove. The corresponding guide section can comprise at least one raised guide element that engages in at least one groove of at least one roller. The raised guide element of the guide section connected to the guide rail can comprise at least one spherical or cylindrical element that forms a positive-locking joint with at least one groove of at least one roller connected to the displaceable unit.

[0194] Such a roller with at least one groove can, for example, have at least one V-shaped or at least one U-shaped groove on its outer surface. Furthermore, such a roller with at least one groove can comprise at least two mirror-symmetrical guide surfaces that are not aligned parallel to one another. At least two guide surfaces of such a roller can be designed such that their distance from one another decreases or increases in the direction of the corresponding guide section.

[0195] Furthermore, such a roller with at least one groove can be shaped such that the outer diameter of the roller tapers towards the center. At least one roller with at least one groove, of the guide section connected to the displaceable unit, can be designed to be adjustable in its position relative to the displaceable unit. At least one roller with at least one groove, of the guide section connected to the displaceable unit, can comprise at least one adjusting piece or be connected to such an adjusting piece. In particular, such an adjusting piece can comprise at least one eccentrically designed element or a threaded element.

[0196] Furthermore, the guide section connected to the movable unit can comprise at least three rollers, each with at least one groove. Preferably, at least two of these rollers can be arranged such that their rotation axes are aligned parallel to each other. In particular, at least two of these rollers can be designed to be stationary relative to the movable unit, while at least one roller can be adjusted in its position relative to the stationary rollers.

[0197] At least one adjustable roller with at least one groove of the guide section connected to the displaceable unit can be arranged in particular on the side of the device facing away from the tool holder.

[0198] The joint between at least one adjustable roller with at least one groove and the displaceable unit can, in particular, be frictionally connected. Furthermore, such a roller can comprise at least one plain bearing or at least one rolling bearing. In particular, the guide section connected to the displaceable unit can comprise at least one rolling bearing with a profiled outer ring. The outer ring of such a rolling bearing can, for example, have at least one V-shaped or U-shaped groove.

[0199] In a further embodiment of the invention, the guide section connected to the displaceable unit can comprise at least four rollers, each with at least one groove. Preferably, at least four rollers, each with at least one groove, can be arranged such that their axes of rotation are aligned parallel to one another. In particular, at least two of these rollers can be designed to be fixed relative to the displaceable unit, while at least two rollers can be designed to be adjustable in their position relative to the fixed rollers. At least two adjustable rollers, each with at least one groove, of the guide section connected to the displaceable unit can be arranged in particular on the side of the device facing away from the tool holder.

[0200] The position of the adjustable rollers, each with at least one groove, relative to the stationary rollers can be adjusted using at least one adjusting piece. Such an adjusting piece can, for example, comprise at least one threaded element or at least one eccentrically designed element. Furthermore, the joint for locking at least one adjustable roller in its respective position can preferably be designed to be force-locking.

[0201] The guide sections involved in the joining connection between the movable unit and the guide rail can further comprise at least one linear rail and at least one corresponding guide carriage. In particular, at least one of the guide sections involved in the joining connection between the movable unit and the guide rail can comprise at least one recirculating ball bearing guide. The guide carriage can, for example, be connected to the movable unit or form part of it, while the linear rail can form part of the guide rail or be connected to it. Furthermore, the linear rail of the guide sections involved in the joining connection between the movable unit and the guide rail can comprise at least one guide shaft.

[0202] Furthermore, the joining connection between the movable unit and the guide rail can comprise at least one dovetail guide.

[0203] In an advantageous development, the device can comprise a workpiece stop. This workpiece stop can preferably be designed such that the angle between the guide rail and the workpiece is defined by applying at least one stop surface of the workpiece stop to at least one edge of the workpiece.

[0204] Preferably, the workpiece stop can be connected to the guide rail, for example, in such a way that the position and / or orientation of the workpiece stop relative to the guide rail can be adjusted and locked in various positions. The workpiece stop can further comprise at least one adjustment element that enables the user to adjust the angle between at least one stop surface of the workpiece stop and the guide rail. By placing at least one workpiece edge against at least one stop surface of the workpiece stop, the angle between the workpiece and the guide rail can thus be adjusted. Furthermore, the workpiece stop can be designed so that it can be fixed in various longitudinal positions and orientations relative to the guide rail.The workpiece stop can, for example, have at least one element that interacts positively with at least one corresponding element of the guide rail in such a way that rotation of at least a part of the workpiece stop relative to the guide rail is prevented. Such a workpiece stop can, in particular, have at least one element that engages in at least one groove running along the longitudinal axis of the guide rail.

[0205] The workpiece stop can further comprise at least one locking device for fixing the position of the workpiece stop relative to the guide rail. Such a device for fixing the workpiece stop can, in particular, be designed such that the workpiece stop is fixed to the guide rail by means of at least one force-locking joint. The device for fixing the workpiece stop can furthermore be designed such that the workpiece stop can be positioned and fixed relative to the guide rail without the need for tools.

[0206] The device for securing the workpiece stop can, for example, comprise at least one clamping device. This clamping device can, for example, form at least one frictional connection between the workpiece stop and the guide rail. Furthermore, the clamping device can, in particular, comprise at least one threaded element, at least one spring-actuated clamping piece, or at least one eccentrically designed element. In an advantageous development of this embodiment, at least one threaded element of such a clamping device can be connected to a handle to enable tool-free joining and releasing of the clamping device.

[0207] The handle can, for example, be connected to the threaded element in such a way that the joint between the handle and the threaded element can be separated by lifting the handle, allowing the handle to be rotated without causing the threaded element to rotate. In particular, the handle can have at least one clamping lever and / or at least one handle. Furthermore, this handle can be designed as a knurled knob or polygonal handle.

[0208] To prevent an unintentional change in the position of the device relative to the workpiece, the guide rail can be fixed in its respective position relative to at least one object, in particular relative to the workpiece, by means of at least one stop device. Such a stop device can, for example, be connected to the guide rail in such a way that the position and / or orientation of the stop device relative to the guide rail can be adjusted and locked in various positions. The locking of the stop device relative to the guide rail can preferably be achieved by means of a force-locking joint.

[0209] The stop device can, in particular, be designed such that at least a portion of the stop device is positively connected to the guide rail. According to a further embodiment of the invention, the stop device can be designed such that it engages in at least one of the grooves running along the longitudinal direction of the guide rail.

[0210] In particular, the stop device can comprise at least one element engaging in a groove, as well as at least one stop part which projects beyond the cross section of the guide rail.

[0211] Furthermore, the stop device can comprise at least one, or any combination of at least two, of the following stop means: screw clamp, hold-down clamp, clamping claw, magnet, magnetic base, threaded element, suction cup, vacuum plate, or lever clamp. Furthermore, the connection between the stop device and the guide rail can preferably be designed to be detachable, so that at least part of the stop device can be replaced.

[0212] The force-locking joint for fixing the stop device relative to the guide rail can also be designed in such a way that positioning, locking and releasing of the stop device are possible without tools.

[0213] The force-locking connection for securing the anchor device can be established, for example, by at least one clamping device. Furthermore, such a clamping device can comprise, in particular, at least one threaded element, at least one spring-actuated clamping piece, or at least one eccentrically designed element. In an advantageous development of this embodiment, the clamping device can be connected to a handle to enable tool-free joining and releasing of the joining connection between the anchor device and the guide rail. Furthermore, the device for securing the anchor device can have at least one tensioning lever and / or at least one handle. In particular, at least one handle of the anchor device can be connected to a threaded element in such a way that it can be tightened or loosened manually.

[0214] Furthermore, such a handle can, for example, be connected to at least one threaded element in such a way that the joint between the handle and the threaded element can be separated by lifting the handle in such a way that the handle can be rotated without the threaded element rotating as a result.

[0215] Furthermore, the device can comprise at least one fluid supply that allows the user to supply a cooling lubricant. Such a fluid supply can comprise a connection that enables an external fluid supply and / or a container. Such a container can serve to hold a fluid such as a coolant or lubricant and have at least one opening for filling. Furthermore, at least one container of the fluid supply can be connected to the displaceable unit or integrated therein. Such a container for holding a fluid can be designed such that it can be connected to the displaceable unit in various positions and / or orientations.

[0216] The joint between the fluid supply container and the movable unit is preferably designed to be separable. Furthermore, this joint can be designed so that it can be removed without tools.

[0217] In a further embodiment, the fluid supply can have at least one line and at least one valve. The volume flow of the exiting fluid can preferably be regulated by means of at least one valve. The valve can preferably be designed such that the volume flow can be adjusted without the use of tools. Furthermore, the line can be designed such that the fluid can be discharged in a locally defined area relative to at least one part of the device.

[0218] In particular, the fluid supply line can be designed to be self-locking, allowing the outlet position and angle of the fluid to be adjusted. In the context of the present invention, self-locking means that the line can be manually aligned, which influences the outlet angle and position of the fluid to a functionally relevant extent, whereby the effect of gravity and the forces occurring during the fluid outlet have no functionally relevant impact on the line's alignment. All components of the fluid supply can be designed to be separable or inseparable from one another.

[0219] It is understood that the features of the invention mentioned above and those to be explained below can be used not only in the combination specified in each case, but also in other combinations or in isolation, without departing from the scope of the invention.

[0220] Further features and advantages of the invention will become apparent from the following description of preferred embodiments with reference to the drawings.

[0221] They show: Fig. 1 shows embodiment 1 of a device according to the invention in a perspective view from the front. Fig. 2 shows embodiment 2 of a device according to the invention in a perspective view from behind. Fig. 3 shows embodiment 3 of a device according to the invention in a perspective view from behind. Fig. 4 shows embodiment 4 of a device according to the invention in a front view. Fig. 5 shows embodiment 5 of a device according to the invention in a perspective view from behind. Fig. 6 shows embodiment 5 of a device according to the invention in side view. Example 1:

[0222] In embodiment 1, the tool or machine tool 5 is designed as a cutting disc, see Fig. 1.

[0223] The tool holder 3 is similar to the tool holder of an angle grinder, designed so that workpieces can be machined using disc-shaped tools. Using such a tool holder 3, for example, saw blades, grinding wheels, cutting discs, or grinding cups can be fixed and driven by a motor.

[0224] The movable unit 2 comprises the drive for the tool 5, which in this case is disc-shaped. Furthermore, the tool holder 3 is designed so that disc-shaped tools of different diameters can be adapted.

[0225] The tool holder 3 comprises, in particular, at least one adapter connected to at least one motor-driven shaft. The tool 5 is applied to at least one part, in particular to the adapter, of the tool holder 3 and secured by means of at least one threaded element. This threaded element is designed, in particular, as a disc with an internal thread and has at least one element that enables manual tightening and loosening or positive joining with a tool. Furthermore, such a threaded element can be designed as a nut.

[0226] Furthermore, the device comprises a device for adjusting the cutting depth 10. The cutting depth is preferably adjusted manually by means of this device.

[0227] The combination of the movable unit 2 and the tool holder 3 is designed in particular such that the height of the tool holder 3 can be adjusted relative to the workpiece 11.

[0228] The adjustment of the height of the tool holder 3 relative to the workpiece 11 can be carried out, for example, by a translational movement of the tool holder 3 along an axis which is not parallel to the longitudinal axis of the guide rail 1, or by a rotation about an axis which is fixed relative to the displaceable unit 2.

[0229] In the present embodiment, the device for adjusting the cutting depth 10 comprises a linear guide which is aligned transversely to the longitudinal axis of the guide rail 1 and at least one clamping device which serves to fix the tool holder 3 in its respective height position.

[0230] In this exemplary embodiment, the linear guide of the cutting depth adjustment device 10 comprises at least one dovetail guide along which the tool holder 3 can be guided. By means of at least one clamping device, a force-locking connection can be established between the tool holder 3 and the displaceable unit 2, which fixes the tool holder 3 in its respective position relative to the displaceable unit 2.

[0231] In an advantageous development of this embodiment, such a clamping device comprises at least one threaded element. Said threaded element is further connected to a handle to enable tool-free adjustment of the height of the tool holder 3 by manually tightening or loosening the threaded element. Furthermore, such a handle can be designed as a knurled knob, lever, or polygonal handle.

[0232] In the present embodiment, the threaded element of the cutting depth adjustment device 10 is designed as a screw connected to a handle. The handle of this clamping screw is connected to the threaded element in such a way that the joint between the handle and the threaded element can be separated by lifting the handle, allowing the handle to be rotated without causing the threaded element to rotate.

[0233] In this embodiment, the tool holder 3 is separably connected to the displaceable unit 2 and can be detached from it, for example, for maintenance purposes.

[0234] To achieve the desired bending moment and the desired damping properties, the guide rail 1 of the present embodiment 1 is designed as a hollow profile. Furthermore, the guide rail 1 is characterized by a square cross-section and a wall thickness of at least 1 mm. The total height and the total width of the cross-section of the guide rail 1 are each at least 20 mm in the present embodiment.

[0235] Furthermore, the guide rail 1 preferably comprises at least one groove on each of four sides extending along its longitudinal axis, each groove being formed parallel to the longitudinal axis of the guide rail 1. These grooves are in particular designed as T-slots. Furthermore, at least two of these grooves represent at least part of the guide section 7 connected to the guide rail 1.

[0236] In particular, the guide rail 1 comprises at least one profile produced by means of a pressure-forming manufacturing process, which preferably contains aluminum. In particular, such a profile can be an extruded aluminum profile.

[0237] In the present embodiment, the displaceable unit 2 is connected to at least one guide section 6, which can form a positive-locking joint with at least one guide section 7. The guide section 6 can be formed as part of the displaceable unit 2 or connected thereto. In particular, the guide section 6 is connected to the displaceable unit 2 in such a way that at least part of the guide section 6 can be adjusted in its position relative to the displaceable unit 2 and fixed in various positions relative to the displaceable unit 2.

[0238] The joint between the movable unit 2 and the guide rail 1 is designed in particular such that the guide play of this joint can be adjusted by changing the distance between at least two parts of the guide section 6 connected to the movable unit 2. In particular, the guide play is adjusted by changing the clear dimension between at least two raised guide elements of the guide section 6 connected to the movable unit 2, which each engage in at least one groove of the guide section 7 connected to the guide rail 1. At least one adjustable raised guide element of the guide section 6 connected to the movable unit 2 is arranged in particular on the side of the device facing away from the tool holder 3.

[0239] Furthermore, the guide section 7 can be formed as part of the guide rail 1 or connected thereto. In this exemplary embodiment, the guide section 7 comprises at least two grooves that run along the longitudinal axis of the guide rail 1 and constitute part of the guide rail 1. In particular, the guide section 7 connected to the guide rail 1 comprises at least two grooves that run parallel to the longitudinal axis of the guide rail 1, are arranged on opposite sides of the guide rail 1, and whose openings point in opposite directions.

[0240] The joint between guide section 6 and guide section 7 is designed such that at least two raised guide elements of guide section 6 each engage in at least one groove of guide section 7. In particular, at least two raised guide elements of guide section 6 each engage in at least one of the grooves of guide section 7 arranged on opposite sides of guide rail 1.

[0241] Furthermore, the joint between the movable unit 2 and the guide rail 1 is designed such that the engagement depth of at least one raised guide element of the guide section 6 into at least one groove of the guide section 7 can be changed. This change in the engagement depth is achieved in particular by changing the clearance between at least two raised guide elements of the guide section 6 connected to the movable unit 2, which each engage in at least one groove of the guide section 7 connected to the guide rail 1. In the present embodiment, this adjustment of the engagement depth is achieved by means of at least one adjusting piece 15.

[0242] The joining connection between at least one raised guide element of the guide section 6 and the displaceable unit 2 is formed in particular by at least one clamping device. Such a clamping device comprises in particular a force-locking joining connection which connects at least one raised guide element of the guide section 6 to the displaceable unit 2. Furthermore, such a clamping device preferably comprises at least one or at least two threaded elements. Furthermore, such a threaded element of the clamping device can be connected to at least one handle for securing at least one raised guide element of the guide section 6 relative to the displaceable unit 2, in order to enable manual tightening and loosening of the threaded element.

[0243] The handle can, for example, be connected to the threaded element in such a way that the joint between the handle and the threaded element can be separated by lifting the handle, allowing the handle to be rotated without causing the threaded element to rotate. In particular, the handle can have at least one clamping lever and / or at least one handle.

[0244] The raised guide elements of the guide section 6 engaging in the guide section 7 can, for example, comprise concave or convex shaped sections.

[0245] The joining connection between guide rail 1 and displaceable unit 2 is further designed such that only translational movements of the displaceable unit 2 along the longitudinal axis of the guide rail 1 are possible and movements of the displaceable unit 2 along other axes, as well as rotational movements of the displaceable unit 2 relative to the guide rail 1, in the device resting on the workpiece 11 and in the cantilevered configuration, are prevented.

[0246] The joint between guide rail 1 and movable unit 2 can be separated, for example, by moving movable unit 2 along the longitudinal axis of guide rail 1 over the entire length of guide rail 1 until guide section 6 no longer makes contact with guide section 7. In this way, the device can be disassembled without the use of tools to reduce the packing dimensions for transport.

[0247] In order to limit the maximum travel path of the movable unit 2 along the longitudinal axis of the guide rail 1, the guide rail 1 is connected to at least one longitudinal stop 4.

[0248] The longitudinal stop 4 is designed such that it can be displaced along the longitudinal axis of the guide rail 1 and can be locked in various positions. In particular, the longitudinal stop 4 is designed such that, in its respective position, it represents a mechanical stop that the displaceable unit 2 cannot overcome during its movement along the longitudinal axis of the guide rail 1. Furthermore, the longitudinal stop 4 is designed such that it at least partially engages in at least one of the grooves running along the longitudinal axis of the guide rail 1.

[0249] In particular, the longitudinal stop 4 comprises at least one element engaging in a groove, as well as at least one stop section which projects beyond the cross section of the guide rail 1.

[0250] The element of the longitudinal stop 4 engaging in the groove can, for example, comprise a sliding block, while the stop part which projects beyond the cross section of the guide rail 1 can comprise a threaded element, in particular designed as a screw.

[0251] Furthermore, the device of the present embodiment comprises at least one connecting device 9, wherein the connecting device 9 can either be connected to the guide rail 1 or form part of it. The guide rail 1 can preferably be connected to at least one further segment by means of the connecting device 9 in such a way that the resulting connection increases the effective distance along which the displaceable unit 2 can be guided.

[0252] The connecting device 9 can be designed in one part or in several parts, and is preferably designed such that the displaceable unit 2 can be moved along the longitudinal axis of the guide rail 1 over the connecting device 9 without the connecting device 9 restricting the freedom of movement of the displaceable unit 2 along the longitudinal axis of the guide rail 1.

[0253] According to a further embodiment of the invention, at least a portion of the connecting device 9 engages in at least one of the grooves extending along the longitudinal axis of the guide rail 1. In particular, the connecting device 9 is designed such that at least a portion of the connecting device 9 engages in at least two of the grooves extending along the longitudinal axis of the guide rail 1.

[0254] In the present embodiment, the connecting device 9 comprises at least two elements, each of which engages positively in at least one of the grooves running along the longitudinal axis of the guide rail 1 and can be fixed in its respective position relative to the guide rail 1.

[0255] These connecting elements can, for example, each comprise at least one T-slot nut. At least one T-slot nut, which engages in at least one groove of the guide rail 1, has at least two internal threads. These internal threads fix the T-slot nut in its respective position relative to the guide rail 1.

[0256] The stop device 8 is preferably designed such that it can be connected to the guide rail 1 in various positions and / or orientations. The stop device 8 preferably comprises at least one element which, similar to a sliding block, engages in at least one groove of the guide rail 1 and can be fixed in its respective position relative to the guide rail 1. The stop device 8 is preferably fixed relative to the guide rail 1 by means of a force-locking joint. In particular, the force-locking joint between the stop device 8 and the guide rail 1 is designed such that it can be joined and released without the use of tools.

[0257] In this exemplary embodiment, the stop device 8 comprises, for example, at least two spacers arranged at the ends of the guide rail 1 that are the most spatially spaced from one another. By means of these spacers and a force-locking joint at the respective ends of the guide rail 1, the latter is fixed, for example, to a work surface 12 in such a way that a free space is created between the device and the work surface 12, into which a workpiece 11 can be inserted.

[0258] The force-locking connection between the guide rail 1 and, in this case, the working surface 12 is formed by at least one threaded element at each end of the guide rail 1. In particular, the force-locking connection between the guide rail 1 and the working surface 12 can be formed at each end of the guide rail 1 by at least one screw and at least one slot nut, which engages in at least one groove of the guide rail 1.

[0259] In an advantageous further development of this embodiment, the stop device 8 comprises at least one adjustable element which is designed such that the position and / or the distance of the guide rail 1 relative to the object to which it is fixed can be changed.

[0260] In particular, the stop device 8 can comprise at least one element having at least two stop surfaces whose distance from one another can be adjusted. The distance between at least two stop surfaces of such an adjustable element of the stop device 8 can be adjusted, for example, by means of at least one threaded element.

[0261] The stop device 8 comprises, in particular, at least one leveling element for adjusting the position and / or distance of the guide rail 1 relative to the object to which the device is fixed. Furthermore, the stop device 8 can comprise at least two leveling elements, each arranged at the end of the guide rail 1.

[0262] These leveling elements allow the user to adjust the height as well as the inclination of the guide rail 1 relative to the object to which the device is fixed.

[0263] In the present embodiment, the work surface 12 is connected to at least one positioning element 13, against which the workpiece 11 can be placed. In this configuration, the workpiece 11 is aligned relative to the device by means of at least one positioning element 13 and, if necessary, fixed by means of at least one stop means.

[0264] In the present embodiment, the movable unit 2 is connected to at least one drive roller 16, which is connected to a motor drive and can move the movable unit 2 along the longitudinal axis of the guide rail 1. The motor drive connected to at least one drive roller 16 is in particular connected to the movable unit 2 or integrated into it.

[0265] Furthermore, the motor drive connected to at least one drive roller 16 is provided with control electronics by means of which the motor drive can be switched on and off.

[0266] Furthermore, this control electronics is connected to at least one end-position sensor 17, which is preferably connected to the movable unit 2 or integrated into it. Such an end-position sensor 17 serves in particular as a signal generator for switching off the motor drive, so that the motor-driven movement of the movable unit 2 stops after at least one end-position sensor 17 detects a nearby object. Preferably, such an end-position sensor 17 comprises at least one proximity switch or at least one button. Furthermore, at least one end-position sensor 17 comprises a device for adjusting the sensitivity. Example 2

[0267] In embodiment 2, the guide rail 1 comprises two segments and is shown in a cantilevered arrangement.

[0268] To achieve the desired bending moment and the desired damping properties, the guide rail 1 of the present embodiment 2 is designed as a solid profile. Thanks to its higher mass, this design variant offers particularly good damping properties compared to a hollow profile. Furthermore, the guide rail 1 is characterized by a square cross-section and a wall thickness of at least 1 mm. The total height and the total width of the cross-section of the guide rail 1 are each at least 30 mm in the present embodiment.

[0269] Furthermore, the guide rail 1 preferably comprises at least one groove on each of its four sides extending along its longitudinal axis, each groove being formed parallel to the longitudinal axis of the guide rail 1. These grooves are in particular designed as T-slots. Furthermore, at least two of these grooves constitute at least part of the guide section 7 connected to the guide rail 1.

[0270] In particular, the guide rail 1 comprises at least one profile produced by means of a pressure-forming manufacturing process, which preferably contains aluminum. In particular, such a profile can be an extruded aluminum profile.

[0271] In this exemplary embodiment, the stop device 8 comprises at least two magnetic elements arranged at the ends of the guide rail 1 that are spatially separated from one another in order to fix the guide rail 1 to metal objects. The two magnetic elements are arranged in particular between the guide rail 1 and at least one metal object and act as spacers to fix the assembly in a cantilevered configuration relative to at least one metal object.

[0272] At least two magnetic elements are designed, for example, such that the magnetic field strength on at least one of their stop surfaces can be adjusted via an adjustment element. The magnetic field strength is adjusted by a manually operated element, in particular designed as a switch.

[0273] The joining connection between the stop device 8 and the guide rail 1 is preferably designed such that the position and / or location of the magnetic elements relative to the guide rail 1 can be changed.

[0274] In particular, the stop device 8 is designed such that a free space is created between the guide rail 1 and at least one nearby object, into which a workpiece 11 can be introduced and machined by means of at least the tool or the machine tool 5.

[0275] The joint between the stop device 8 and the guide rail 1 is designed, for example, as a force-locking connection. In particular, the magnetic elements of the stop device 8 are each fixed to the guide rail 1 by means of at least one threaded element.

[0276] In an advantageous further development, the stop device 8 comprises at least one element which engages at least partially in at least one of the grooves running along the longitudinal direction of the guide rail 1 in order to fix the magnetic elements to the guide rail 1.

[0277] In the present embodiment, the magnetic elements of the stop device 8 are each connected to the guide rail 1 by means of at least one screw and at least one sliding block which engages in at least one groove of the guide rail 1.

[0278] In this exemplary embodiment, the guide section 7 connected to the guide rail 1 comprises at least two grooves that run parallel to the longitudinal axis of the guide rail 1, are arranged on opposite sides of the guide rail 1, and whose openings point in opposite directions. The grooves of the guide section 7 are designed, in particular, as T-slots.

[0279] The guide section 6 connected to the displaceable unit 2 comprises at least two raised guide elements, each of which engages in at least one of the grooves of the guide section 7 arranged on opposite sides of the guide rail 1. In particular, at least two raised guide elements of the guide section 6 engage in two of the grooves of the guide section 7 arranged on opposite sides of the guide rail 1.

[0280] In particular, the raised guide elements of the guide section 6 are designed as rollers, each comprising at least two inclined guide surfaces. In particular, the rollers of the guide section 6 connected to the displaceable unit 2 each have a profiled outer surface. Preferably, at least two rollers of the guide section 6 engage positively in at least two grooves of the corresponding guide section 7.

[0281] The rollers of the guide section 6 are arranged such that their rotational axes are aligned parallel to one another. Furthermore, these rollers each comprise at least two mirror-symmetrical guide surfaces that are not aligned parallel to one another. The guide surfaces of the rollers are designed in particular such that the distance between the guide surfaces decreases toward the engagement section, the guide section 7 connected to the guide rail 1.

[0282] In the present exemplary embodiment, the inclination of the guide surfaces of such a roller of the guide section 6 is designed in particular such that the section of the roller with the greatest penetration depth into at least one groove of the guide section 7 has the minimum distance between the guide surfaces.

[0283] The joint connection between the movable unit 2 and the guide rail 1 is designed in particular such that the guide play of this joint connection can be adjusted by changing the distance between at least two rollers of the guide section 6 connected to the movable unit 2.

[0284] In particular, the adjustment of the guide play of the joint connection between the movable unit 2 and the guide rail 1 is carried out by means of a change in the clear dimension between at least two rollers of the guide section 6 connected to the movable unit 2, which each engage in at least one groove of the guide section 7 connected to the guide rail 1.

[0285] Furthermore, the distance between the corresponding guide surfaces of the guide section 6 relative to the guide section 7 can be adjusted by changing the engagement depth of at least one roller of the guide section 6 in at least one groove of the guide section 7.

[0286] This change in the engagement depth and / or the distance between at least two rollers of the guide section 6 is preferably carried out by means of at least one adjusting piece 15.

[0287] Such an adjusting piece 15 comprises, for example, at least one threaded element and / or at least one eccentrically designed element. Furthermore, at least one positionally adjustable roller is connected to at least one clamping device in such a way that it can be non-positively fixed in its position relative to the displaceable unit 2 by means of such a clamping device.

[0288] In this embodiment, two adjustable rollers are each connected to an adjusting piece 15. Such an adjusting piece 15 is designed here as a bushing with an eccentric bore, with at least one adjustable roller being aligned coaxially with the eccentric bore of such an adjusting piece 15.

[0289] Furthermore, the non-driven rollers of the guide section 6 each comprise at least one plain bearing or at least one roller bearing. In particular, the guide section 6 connected to the displaceable unit 2 comprises at least four rollers with a profiled outer surface. In the present exemplary embodiment, the rollers of the guide sections 6 are designed as roller bearings with a profiled outer ring. Two of these roller bearings with a profiled outer ring are each connected to an adjusting piece 15. These adjusting pieces 15 are each designed as a bushing with an eccentric bore and are connected to the displaceable unit 2 in such a way that the position of their eccentric bores relative to the displaceable unit 2 can be changed by rotating the adjusting pieces 15.The two adjustable roller bearings are each aligned coaxially with the eccentric bores of the adjusting pieces 15 and can be adjusted in their position relative to the stationary roller bearings by rotating the adjusting pieces 15. The joints between the adjusting pieces 15 and the movable unit 2 are each designed such that the adjusting pieces 15 can be rotated about an axis if the joint is released, and rotation of the adjusting pieces 15 is prevented when they are fixed relative to the movable unit 2 by means of the joint.

[0290] At least one adjustable roller of the guide section 6 connected to the displaceable unit 2 is arranged in particular on the side of the device facing away from the tool holder 3.

[0291] In the present embodiment, the movable unit 2 is connected to at least one drive roller 16, which is connected to a motor drive and can move the movable unit 2 along the longitudinal axis of the guide rail 1. The motor drive connected to at least one drive roller 16 is in particular connected to the movable unit 2 or integrated into it.

[0292] Furthermore, the motor drive, connected to at least one drive roller 16, is provided with control electronics that allow the user to adjust the direction of rotation and the rotation speed of the motor drive and thus the feed direction and the feed speed of the displaceable unit 2 along the longitudinal axis of the guide rail 1. This control electronics is particularly designed such that the feed direction and the feed speed can be changed manually and without the use of tools.

[0293] Furthermore, this control electronics is connected to at least one end-position sensor 17, which is preferably connected to the movable unit 2 or integrated into it. Such an end-position sensor 17 serves in particular as a signal generator for switching off the motor drive, so that the motor-driven movement of the movable unit 2 stops after at least one end-position sensor 17 detects a nearby object. Preferably, such an end-position sensor 17 comprises at least one proximity switch or at least one button. Furthermore, at least one end-position sensor 17 comprises a device for adjusting the sensitivity.

[0294] In the present embodiment 2, the longitudinal stop 4 is connected to a handle such that it can be adjusted without the use of tools and fixed in its respective position relative to the guide rail 1. The handle is particularly connected to a threaded element such that it can be manually tightened or loosened. Furthermore, this handle can be designed as a knurled knob, lever, or polygonal handle.

[0295] This handle can, for example, be connected to the threaded element in such a way that the joint between the handle and the threaded element can be separated by lifting the handle in such a way that the handle can be rotated without the threaded element rotating as a result.

[0296] In the present embodiment 2, the device has a display element that indicates the set cutting depth. This display element is designed, in particular, as a scale or display to allow the user to draw conclusions about the set cutting depth of the tool or machine tool 5 using a numerical value.

[0297] The display element is preferably arranged on a side of the device facing away from the tool holder 3, in particular on the upper side of the displaceable unit 2.

[0298] Preferably, the display element and the device for limiting the maximum cutting depth 14 are arranged in close proximity to one another in order to facilitate operation.

[0299] Furthermore, the display element is designed such that each height position of the tool holder 3 between the two end positions of the adjustment device can be defined as the zero point, so that the user can read the cutting depth relative to the defined zero point. Example 3:

[0300] To achieve the desired damping properties, the guide rail 1 of the present embodiment 3 is designed as a hollow profile with a filling made of a vibration-damping material. Thanks to its higher mass, this design variant offers particularly good damping properties compared to a hollow profile without a filling. This filling can, for example, comprise a granular material such as sand, plastic, or glass beads.

[0301] In this embodiment, the guide section 6 connected to the displaceable unit 2 comprises at least three rollers, each of which engages in at least one of the grooves of the guide section 7 running along the longitudinal axis of the guide rail 1.

[0302] The rollers of the guide section 6 are arranged such that their rotation axes are aligned parallel to each other. In particular, two of these rollers are stationary relative to the movable unit 2, while at least one roller can be adjusted in its position relative to the stationary rollers. At least one such adjustable roller of the guide section 6 connected to the movable unit 2 is arranged in particular on the side of the movable unit 2 facing away from the tool holder 3.

[0303] The engagement depth of at least one roller of the guide section 6 into at least one groove of the guide section 7 can be adjusted by means of at least one adjusting piece 15. The adjustment of the engagement depth of the adjustable rollers of the guide section 6 into at least one groove of the guide section 7 is carried out in particular by rotating the adjusting piece 15 connected to the respective roller.

[0304] Such an adjusting piece 15 comprises at least one cylindrically shaped element, the axis of symmetry of which represents the axis of rotation for adjusting the engagement depth of at least one adjustable roller of the guide section 6 connected to the displaceable unit 2.

[0305] Such an adjusting piece 15 further comprises at least one element eccentrically formed to its rotational axis, by means of which at least one roller of the guide section 6 is aligned. Such an eccentrically formed element can be designed, for example, as a bore, axle, or pin.

[0306] In the present embodiment, at least one adjusting piece 15 is designed as a bushing with an eccentrically arranged bore, wherein at least one adjustable roller of the guide section 6 is aligned coaxially to the eccentric bore of the adjusting piece 15.

[0307] In the present embodiment, the adjustable rollers of the guide section 6 are each detachably connected to an adjusting piece 15. The joint between the respective assembly consisting of roller and adjusting piece 15 does not need to be released to adjust the engagement depth of the respective roller into at least one groove of the guide section 7. To adjust the engagement depth of an adjustable roller of the guide section 6, the joint between the adjusting piece 15 connected to the respective roller and the movable unit 2 is released so that the respective adjusting piece 15 can rotate while mounted relative to the movable unit 2. By rotating the adjusting piece 15, the engagement depth of the roller of the guide section 6, connected to the respective adjusting piece 15, into at least one groove of the guide section 7 changes.

[0308] The adjustable rollers are locked in their respective positions relative to the movable unit 2 by securing the adjusting piece 15 connected to the respective roller relative to the movable unit 2. Such an adjusting piece 15 is secured by a clamping device, which in particular comprises at least one threaded element. In the present embodiment, such a threaded element is designed as a screw with a handle.

[0309] At least one adjusting piece 15 of the present embodiment has at least two surfaces that are aligned parallel to one another and whose surface normals point in opposite directions. These surfaces of such an adjusting piece 15 are particularly designed so that a supported rotation of the adjusting piece 15 can be initiated using an open-end wrench. This property is achieved in that such an adjusting piece 15 comprises at least one segment whose cross-section forms a regular polygon. In particular, at least one adjusting piece 15 of the present embodiment has at least one segment with a four-, six-, or eight-sided cross-section.

[0310] Furthermore, the non-driven rollers of the guide section 6 each comprise at least one plain bearing or at least one roller bearing. In the present embodiment, the guide section 6 connected to the displaceable unit 2 comprises at least three rollers with a profiled outer surface. In the present embodiment, the non-driven rollers of the guide sections 6 are designed as roller bearings with a profiled outer ring.

[0311] In the present embodiment, one of the fixed rollers of the guide section 6 is designed as a drive roller 16. The drive roller 16 is connected to the motor drive and can move the movable unit 2 in a guided manner along the guide rail 1.

[0312] In the present embodiment, the movable unit 2 is connected to at least one drive roller 16, which is connected to a motor drive. The motor drive connected to at least one drive roller 16 is in particular connected to the movable unit 2 or integrated into it.

[0313] Furthermore, the motor drive, connected to at least one drive roller 16, is provided with control electronics that allow the user to adjust the direction of rotation and the rotation speed of the motor drive and thus the feed direction and the feed speed of the displaceable unit 2 along the longitudinal axis of the guide rail 1. This control electronics is particularly designed such that the feed direction and the feed speed can be changed manually and without the use of tools.

[0314] Furthermore, this control electronics is connected to at least two end-position sensors 17, which are preferably connected to the movable unit 2 or integrated into it. These end-position sensors 17 are preferably arranged on opposite sides of the movable unit 2 and, for example, are aligned such that they can detect objects in the direction of the longitudinal axis of the guide rail 1. Such an end-position sensor 17 serves in particular as a signal generator for switching off the motor drive, so that the motor-driven movement of the movable unit 2 stops after at least one end-position sensor 17 detects a nearby object. Preferably, such an end-position sensor 17 comprises at least one proximity switch or at least one button. Furthermore, at least one such end-position sensor 17 comprises a device for adjusting the sensitivity.

[0315] In an advantageous further development of this embodiment, the motor drive of at least one tool or at least one machine tool 5 is connected to these control electronics in such a way that the control electronics switch off the motor drive of at least one tool or at least one machine tool 5 after at least one end position sensor 17 has detected a nearby object and the motor drive, which moves the displaceable unit 2 along the guide rail 1, has been stopped. Furthermore, the control electronics are connected to the motor drive of at least one tool or at least one machine tool 5 in such a way that the control electronics can be used to switch the motor drive of at least one tool or at least one machine tool 5 on and off, as well as to adjust the speed.

[0316] The longitudinal stop 4 is connected to a handle in such a way that its position relative to the guide rail 1 can be adjusted and fixed in various positions without the use of tools. The clamping force for fixing the longitudinal stop 4 in its respective position relative to the guide rail 1 is preferably initiated manually by flipping a lever clamp. The lever clamp is preferably connected to at least one other element of the longitudinal stop 4 in such a way that the joint between the aforementioned elements represents an axis around which the lever of the lever clamp can rotate.

[0317] In particular, the lever clamp has at least one section that is eccentrically designed relative to this rotational axis. In a further embodiment of this design, the lever clamp is connected to a threaded element in such a way that the latter is fixed in its respective position relative to the guide rail 1 by moving the lever.

[0318] In the present exemplary embodiment, the lever clamp is connected to a threaded element, which is in turn connected to an element that positively engages in at least one groove running along the longitudinal axis of the guide rail 1. The joining connection between the threaded element and the element that positively engages in at least one groove running along the longitudinal axis of the guide rail 1 is in particular designed to be releasable. Furthermore, the element that positively engages in at least one groove running along the longitudinal axis of the guide rail 1 comprises an internal thread, which represents part of the joining connection to the threaded element connected to the lever clamp. The element that positively engages in at least one groove running along the longitudinal axis of the guide rail 1 is preferably designed as a sliding block.

[0319] By turning the lever, the joint between the threaded element and the lever clamp moves in the axial direction of the threaded element, while at least part of the lever moves in the opposite direction and thus introduces the clamping force to prevent displacement of the longitudinal stop 4. The threaded element connected to the lever of the lever clamp is designed in particular as a screw, threaded pin, threaded bolt or threaded rod. In the present exemplary embodiment, this threaded element is preferably detachably connected to a sliding block which engages at least partially in at least one of the grooves running along the longitudinal axis of the guide rail 1. In particular, this sliding block engages in a groove running along the longitudinal axis of the guide rail 1, which groove is arranged, for example, on the upper side of the guide rail 1.

[0320] In an advantageous development of the specified invention, the device comprises, in addition to the device for adjusting the cutting depth 10, a device for limiting the maximum cutting depth 14, which allows the user to reproduce a previously set cutting depth with high repeatability. In the present embodiment, the device for limiting the maximum cutting depth 14 is connected to the movable unit 2.

[0321] In particular, the device for limiting the maximum cutting depth 14 is designed such that a previously set cutting depth can be reproduced even if a different cutting depth setting has been made in the meantime.

[0322] This property is achieved in that the device for limiting the maximum cutting depth 14 comprises at least one stop piece which is designed such that, with the aid of this stop piece, the minimum distance between the tool or the machine tool 5 and the workpiece surface can be limited with repeatable accuracy.

[0323] The stop piece of the device for limiting the maximum cutting depth 14 preferably comprises at least one element that forms a mechanical stop for the tool holder 3 or at least one element connected to the tool holder 3 and limits the minimum adjustable height of the tool holder 3. In particular, this stop piece is designed to be adjustable in its respective height relative to the displaceable unit 2 or the tool holder 3 and to be lockable in various positions in order to adjust the maximum cutting depth as required. Preferably, the device for limiting the maximum cutting depth 14 is designed such that it limits the maximum cutting depth and, at the same time, enables a variety of settings that result in smaller cutting depths.

[0324] In order to prevent unintentional adjustment of the stop piece, the device for limiting the maximum cutting depth 14 comprises at least one counter element, by means of which the position of the stop part of the stop piece relative to the displaceable unit 2 or the tool holder 3 can be defined.

[0325] To enable the most precise adjustment of the cutting depth, the device for limiting the maximum cutting depth 14 in the present embodiment has at least one threaded element that changes the maximum cutting depth per revolution by the pitch of the threaded element. This threaded element is connected to the stop piece of the device for limiting the maximum cutting depth 14.

[0326] In the present embodiment, the threaded element connected to the stop piece is provided with a handle to enable manual adjustment of the maximum cutting depth.

[0327] The threaded element of the device for limiting the maximum cutting depth 14 is connected to a handle designed such that the threaded element can be rotated without the use of tools. Furthermore, this handle can be designed as a knurled knob or a polygonal handle.

[0328] In an advantageous development of this design, the handle has at least one marking that allows the user to determine the degree by which the threaded element is rotated. This marking can be in the form of a line or dot, for example.

[0329] The marking, which allows the user to adjust the threaded element by an exact degree, is arranged, for example, on the front side of the handle.

[0330] The locking element for securing the stop piece of the device for limiting the maximum cutting depth 14 comprises, in particular, at least one threaded element. In the present embodiment, the threaded element of this locking element is designed as an internal thread.

[0331] To ensure tool-free adjustment of the locking element, it is also equipped with at least one grip. Furthermore, the grip of the locking element can be designed as a knurled knob or a polygonal grip.

[0332] Furthermore, the device for limiting the maximum cutting depth 14 is designed such that at least one stop piece can be completely removed from the device and replaced with at least one other stop piece. By changing the stop piece, at least two previously defined cutting depth settings can be reproduced. Preferably, the stop piece can be removed together with the counter element without having to loosen the joint between the respective stop piece and counter element.

[0333] In particular, the joint that fixes the stop piece relative to the movable unit 2 or the tool holder 3 is designed such that it can be removed from the device without the need for tools. Furthermore, the device for limiting the maximum cutting depth 14 is designed such that at least one stop piece, including the counter element, can be removed without tools, without changing the relative position of the counter element to the respective stop piece during this process, in order to be able to reproduce the set height of the tool holder 3 later.

[0334] This property is achieved by at least one stop piece including at least one counter element being connected to the displaceable unit 2 or the tool holder 3 by means of at least one clamping device. This clamping device is preferably designed such that the stop piece can be joined to or separated from the displaceable unit 2 or the tool holder 3 without the use of tools. By means of this clamping device, at least one stop piece including at least one counter element can be joined, preferably force-fitting, to the displaceable unit 2 or the tool holder 3. Furthermore, this clamping device comprises in particular at least one threaded element, at least one spring-actuated clamping piece or at least one eccentrically designed element. Furthermore, the clamping device comprises at least one handle. This handle can in particular be designed as a knurled knob, lever or polygonal handle.

[0335] For example, the handle is connected to the threaded element in such a way that the joint between the handle and the threaded element can be separated by lifting the handle so that the handle can be rotated without the threaded element rotating as a result.

[0336] The counter element of the device for limiting the maximum cutting depth 14 can in particular be designed to be self-locking or self-locking, or can be connected to the stop piece by means of a force-locking joint.

[0337] In particular, the device for adjusting the cutting depth 10 and the device for limiting the maximum cutting depth 14 are arranged on the rear side of the device so that the user can adjust the cutting depth without working in the immediate vicinity of the tool or the machine tool 5.

[0338] Furthermore, the device of the present embodiment comprises a fluid supply, which allows the user to supply a fluid such as a cooling lubricant. The fluid supply comprises at least one container, at least one valve, and at least one line. The container serves to hold a fluid such as a coolant or lubricant and comprises at least one opening with a closure.

[0339] The fluid supply valve serves to regulate the volume flow of the escaping fluid. The valve is preferably designed such that the volume flow can be changed without the use of a tool. The line is connected to at least one valve and is arranged, for example, on a side of the movable unit 2, which is oriented orthogonally to the longitudinal axis of the guide rail 1. The line is designed such that the fluid can be discharged in a locally defined area relative to the tool or machine tool 5.

[0340] Furthermore, the line is designed to be self-perpetuating, thus enabling permanent adjustment of the outlet position and the outlet angle of the fluid relative to the tool or machine tool 5. Example 4:

[0341] In embodiment 4, the stop device 8 comprises, for example, at least one screw clamp, which can fix the guide rail 1 of the device in resting on the workpiece 11 or in cantilevered configurations.

[0342] Furthermore, the guide rail 1 has at least one groove on each of the four sides running along the longitudinal axis, which grooves are aligned parallel to the longitudinal axis of the guide rail 1. These grooves are designed, in particular, as T-slots.

[0343] The screw clamp of the stop device 8 has at least one engaging piece that engages in at least one of these T-slots running along the longitudinal axis of the guide rail 1. Thus, at least one screw clamp of the stop device 8 can be fixed in various positions and / or orientations relative to the guide rail 1.

[0344] The connecting device 9 comprises four T-nuts, which are designed to engage positively in four of the T-slots running along the longitudinal axis of the guide rail 1. Furthermore, the T-nuts of the connecting device 9 are arranged to engage in the T-slots of at least two segments of the guide rail 1 in order to connect them to one another. The T-nuts of the connecting device 9 each comprise at least two internal threads, by means of which their position can be fixed relative to the guide rail 1.

[0345] The guide section 6, connected to the movable unit 2, comprises at least three rollers, each of which engages in at least one of the T-slots of the guide section 7 extending along the longitudinal axis of the guide rail 1. The rollers of the guide section 6 are arranged such that their rotation axes are aligned parallel to each other. In particular, at least two of these rollers are stationary relative to the movable unit 2, while at least one roller can be adjusted in its position relative to the stationary rollers.

[0346] The engagement depth of at least one roller of the guide section 6 into at least one groove of the guide section 7 can be changed by means of at least one adjusting piece 15. The adjustment of the engagement depth of at least one roller of the guide section 6 into at least one groove of the guide section 7 is carried out in particular by rotating the adjusting piece 15 connected to the respective roller.

[0347] Such an adjusting piece 15 comprises at least one cylindrically shaped element, the axis of symmetry of which represents the axis of rotation for adjusting the engagement depth of at least one adjustable roller of the guide section 6 connected to the displaceable unit 2.

[0348] Such an adjusting piece 15 further comprises at least one element eccentrically formed relative to the rotational axis of the adjusting piece 15, by means of which at least one roller of the guide section 6 is aligned. Such an eccentrically formed element can be formed, for example, as a bore, axle, or pin.

[0349] In the present embodiment, at least one adjusting piece 15 is designed as a bushing with an eccentric bore, wherein the axis of symmetry of this bore is aligned parallel to the axis of rotation of the adjusting piece 15 and at least one roller is aligned coaxially to the eccentric bore of the adjusting piece 15.

[0350] In the present exemplary embodiment, the adjustable rollers of the guide section 6 are each detachably connected to an adjusting piece 15. The joint between the respective assembly consisting of roller and adjusting piece 15 does not need to be released to adjust the engagement depth of the respective roller. To adjust the engagement depth of an adjustable roller of the guide section 6, the joint between the adjusting piece 15 connected to the respective roller and the displaceable unit 2 is released so that the respective adjusting piece 15 can rotate while mounted relative to the displaceable unit 2. This rotation of the adjusting piece 15 changes the engagement depth of the roller of the guide section 6, connected to the respective adjusting piece 15, in at least one groove of the guide section 7.The adjustable rollers are locked in their respective positions by fixing the adjusting piece 15 connected to the respective roller relative to the displaceable unit 2.

[0351] At least one adjusting piece 15 of the present embodiment has at least two surfaces that are aligned parallel to one another and whose surface normals point in opposite directions. These surfaces of such an adjusting piece 15 are particularly designed so that a supported rotation of the adjusting piece 15 can be initiated using an open-end wrench. This property is achieved in that such an adjusting piece 15 comprises at least one segment whose cross-section forms a regular polygon. In particular, at least one adjusting piece 15 of the present embodiment has at least one segment with a four-, six-, or eight-sided cross-section.

[0352] Furthermore, the non-driven rollers of the guide section 6 each comprise at least one plain bearing or at least one rolling bearing.

[0353] In the present embodiment, one of the fixed rollers of the guide section 6 is designed as a drive roller 16. The drive roller 16 is connected to the motor drive and can move the movable unit 2 in a guided manner along the guide rail 1.

[0354] In the present embodiment, the movable unit 2 is connected to at least one drive roller 16, which is connected to a motor drive. The motor drive connected to at least one drive roller 16 is in particular connected to the movable unit 2 or integrated into it.

[0355] Furthermore, the motor drive, connected to at least one drive roller 16, is provided with control electronics that allow the user to adjust the direction of rotation and the rotation speed of the motor drive and thus the feed direction and the feed speed of the displaceable unit 2 along the longitudinal axis of the guide rail 1. This control electronics is particularly designed such that the feed direction and the feed speed can be changed manually and without the use of tools.

[0356] Furthermore, this control electronics is connected to at least two end-position sensors 17, which are preferably connected to the movable unit 2 or integrated into it. Such an end-position sensor 17 serves in particular as a signal generator for switching off the motor drive, so that the motor-driven movement of the movable unit 2 stops after at least one end-position sensor 17 detects a nearby object. Preferably, such an end-position sensor 17 comprises at least one proximity switch or at least one button. Furthermore, at least one such end-position sensor 17 comprises a device for adjusting the sensitivity. Example 5:

[0357] In embodiment 5, the tool or machine tool 5 is designed as an angle grinder and is connected to the displaceable unit 2 by means of the tool holder 3.

[0358] In this embodiment, the joint connection between the tool holder 3 and the displaceable unit 2 is designed to be separable and can be released, for example, if a different tool or a different machine tool 5 is to be adapted.

[0359] The tool holder 3 of the device comprises a connecting part that can fix at least one tool or machine tool 5 relative to the displaceable unit 2. In the present exemplary embodiment, the tool holder 3 comprises several connecting parts. The connecting parts of the tool holder 3 are further designed such that at least one connecting part can be replaced by at least one other connecting part, and the resulting configuration enables adaptation of at least one different type of tool or at least one different type of machine tool 5.

[0360] Furthermore, the tool holder 3 is designed such that at least one tool or at least one machine tool 5 can be fixed in different positions and / or positions relative to the displaceable unit 2.

[0361] In particular, the tool holder 3 of the present embodiment is designed such that the angle of at least one adapted tool or at least one adapted machine tool 5 relative to the displaceable unit 2 can be changed about at least three axes.

[0362] In order to enable adaptation of the geometry of the tool holder 3 to the geometry of different tools or machine tools 5, at least one element of the tool holder 3 is designed such that it can be fixed in different positions relative to the displaceable unit 2.

[0363] In this embodiment, the device for adjusting the cutting depth 10 comprises a dovetail guide along which the tool holder 3 can be guided. A clamping device can be used to establish a force-locking connection between the tool holder 3 and the displaceable unit 2, which fixes the tool holder 3 in its respective position relative to the displaceable unit 2.

[0364] In the present embodiment, the device for adjusting the cutting depth 10 comprises a dovetail guide which is aligned transversely to the longitudinal axis of the guide rail 1.

[0365] In this exemplary embodiment, the stop device 8 comprises two vacuum plates, which are arranged at the ends and on the underside of the guide rail 1. These vacuum plates each have at least one opening on the underside, which serves to at least partially evacuate at least one hollow space between the respective vacuum plate and the surface against which it rests. Furthermore, the vacuum plates each have at least one connection, which preferably establishes a connection to a hose, by means of which at least part of the fluid between the vacuum plate and the surface against which it rests can be evacuated.

[0366] In the present embodiment, the vacuum plates of the stop device 8 are each fastened to the underside of the guide rail 1 by means of at least one screw and at least one sliding block which engages in at least one groove of the guide rail 1.

[0367] In the present embodiment, the guide section 6 connected to the movable unit 2 comprises at least four rollers, each of which engages in at least one of the grooves of the guide section 7 extending along the longitudinal axis of the guide rail 1. The engagement depth of at least two rollers of the guide section 6 in at least one groove of the guide section 7 can be changed by means of at least one adjusting piece 15. The adjustment of the engagement depth of at least one roller of the guide section 6 is achieved in particular by rotating the adjusting piece 15 connected to the respective roller.

[0368] In the present embodiment, at least one adjusting piece 15 is designed as a bushing with an eccentric bore, wherein the axis of symmetry of this bore is aligned parallel to the axis of rotation of the adjusting piece 15 and at least one roller is aligned coaxially to the eccentric bore of the adjusting piece 15.

[0369] In the present embodiment, one of the fixed rollers of the guide section 6 is designed as a drive roller 16. The drive roller 16 is connected to a motor drive and can move the movable unit 2 in a guided manner along the guide rail 1.

[0370] In the present embodiment, the movable unit 2 is connected to at least one drive roller 16, which is connected to a motor drive. The motor drive connected to at least one drive roller 16 is in particular connected to the movable unit 2 or integrated into it.

[0371] Furthermore, the motor drive, connected to at least one drive roller 16, is provided with control electronics that allow the user to adjust the direction of rotation and the rotation speed of the motor drive and thus the feed direction and the feed speed of the displaceable unit 2 along the longitudinal axis of the guide rail 1. This control electronics is particularly designed such that the feed direction and the feed speed can be changed manually and without the use of tools.

[0372] Furthermore, this control electronics is connected to at least two end-position sensors 17, which are preferably connected to or integrated into the movable unit 2. Such an end-position sensor 17 serves, in particular, as a signal generator for shutting off the motor drive, so that the motor-driven movement of the movable unit 2 is stopped by the control electronics after at least one end-position sensor 17 detects a nearby object.

[0373] Furthermore, the control electronics are designed such that the motor drive of at least one tool or at least one machine tool 5 is only switched off after the end position sensor 17 has detected a nearby object and the motor drive, which moves the displaceable unit 2 along the guide rail 1, has been stopped.

[0374] Preferably, such an end-position sensor 17 comprises at least one proximity switch or at least one pushbutton. Furthermore, at least one such end-position sensor 17 comprises a device for adjusting the sensitivity. At least one end-position sensor 17 is connected to the displaceable unit 2 in such a way that it can be fixed in various positions and / or orientations relative to the displaceable unit 2.

[0375] The motor drive of at least one tool or at least one machine tool 5 is switched on and off by switching the power supply 18 of the respective tool or machine tool 5 on or off. The power supply 18 of at least one tool or at least one machine tool 5 is connected in particular to the control electronics and to the movable unit 2, or represents a part thereof. In the present exemplary embodiment, the power supply 18 comprises a protective contact socket which can be connected to the electrical connection of at least one tool or at least one machine tool 5. The protective contact socket of the power supply 18 is connected to the movable unit 2 and is arranged, for example, on the rear of the movable unit 2. List of reference symbols: 1 guide rail 2 Movable unit 3 tool holder 4 Longitudinal stop 5 Tool or machine tool 6 leading game 7 leading game 8 Anchor device 9 Connecting device 10 Device for adjusting the cutting depth 11 Workpiece 12 work surface 13 Positioning element 14 Device for limiting the maximum cutting depth 15 Adjustment piece 16 drive roller 17 End position sensor 18 Power supply QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] US 2942633

[0003] EP 1418018

[0003]

Claims

[1] Device for receiving at least one tool or at least one machine tool (5) which comprises at least one guide rail (1), at least one unit (2) displaceable along the guide rail (1) and at least one tool holder (3) connected to the displaceable unit (2), wherein the device can be fixed to a workpiece (11) or in the working area by means of at least one stop device (8), characterized by that the device comprises a motor drive which can move the displaceable unit (2) along the guide rail (1). [2] Device according to claim 1, characterized by that the motor drive, which can move the displaceable unit (2) along the guide rail (1), is provided with control electronics by means of which at least the direction of rotation and the rotation speed of the motor drive can be adjusted. [3] Device according to claim 2, characterized by that the motor drive, which can move the displaceable unit (2) along the guide rail (1), is connected to the displaceable unit (2) or is integrated into it. [4] Device according to claim 3, characterized by that the motor drive is connected to at least one roller, the rotation of which moves the displaceable unit (2) along the guide rail (1). [5] Device according to at least one of the preceding claims, characterized by that the device comprises at least one end position sensor (17), the signal of which can trigger a shutdown of the motor drive which can move the displaceable unit (2) along the guide rail (1). [6] Device according to at least one of the preceding claims, characterized bythat the control electronics connected to the motor drive of the displaceable unit (2) are connected to at least one voltage supply (18) which can be switched on and off and / or energized and disconnected from the power supply by means of this control electronics. [7] Device according to at least one of the preceding claims, characterized by that the power supply (18) comprises at least one plug connection by means of which an electrically conductive connection can be established between the control electronics connected to the motor drive of the displaceable unit (2) and the power connection of at least one tool or machine tool (5). [8] Device according to claim 1 or 2, characterized bythat the guide rail (1) comprises at least one segment which can be connected to at least one further segment by means of at least one connecting device (9) in such a way that the resulting assembly increases the guide length along which the displaceable unit (2) can be moved in a guided manner. [9] Device according to at least one of the preceding claims, characterized by that the guide part (7) comprises at least two grooves which run parallel to the longitudinal axis of the guide rail (1), are arranged on opposite sides of the guide rail (1), and whose openings point in opposite directions, wherein one part or more parts of the guide part (6) engage in at least two grooves of the guide part (7), whose openings point in opposite directions. [10] Device according to at least one of the preceding claims, characterized bythat the position of at least one roller of the guide section (6) relative to the displaceable unit (2) can be changed by means of at least one adjusting piece (15).

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