Driven tool unit for slotting and machine tool

Abstract

A driven tool unit (1) for slotting is proposed, wherein the tool unit (1) comprises a pusher slide (2), a tool carrier (3) and a drive shaft (4), wherein the drive shaft (4) and the pusher slide (2) are connected to each other via a transmission (6), wherein the transmission (6) comprises at least a rack (7) and at least two spur gears (8, 9), namely a feed gear (8) and a return gear (9), each of which is toothed over a partial circumference (10) of their end faces (11), wherein the feed gear (8) is configured to transmit a feed movement (12) to the pusher slide (2) and the return gear (9) is configured to transmit a return movement (13) to the pusher slide (2).

Description

[0001] The invention relates to a driven tool unit for slotting, comprising a slotting slide, a tool carrier, and a drive shaft. The invention further relates to a machine tool with such a tool unit.

[0002] Such tool units are used, for example, to produce grooves or profiles.

[0003] From DE 10 2013 218 507 A1, a device for slotting is known, comprising a housing, a drive shaft, a pusher slide and a tool carrier, wherein the drive shaft and the pusher slide are coupled to each other via a crank drive and the pusher slide driven by the drive shaft performs an oscillating movement (cutting movement and return stroke), wherein the pusher slide is received and supported in the housing, wherein a sleeve is arranged between the housing and the pusher slide, and wherein at least one seal is provided between the housing and the sleeve and / or the sleeve and the pusher slide.

[0004] From US 865 188 A, a device for slotting is known, comprising a machine for slotting a blank, in combination with means for holding the blank, a tool carrier slide for moving the tool carrier along the axis of the blank, individual tool carriers that are held radially in the slide, guides that are slidably connected to the slide and are provided with means for moving the tool radially at the same time as the movement of the slide.

[0005] From US patent 1,132,179 A, ​​a device for key milling is known, comprising a frame, a pinion rotatably mounted in this frame, means for driving the pinion in two directions, a longitudinally movable tool, a rack supporting the tool which normally meshes with the pinion and is thereby movable, wherein the rack is displaceable in the frame to a position out of engagement with the pinion, and a spring-loaded plunger attached to the rack which engages a fixed stop on the frame when the rack approaches the end of its working stroke, wherein the plunger ensures that the rack teeth remain engaged with the pinion when the direction of rotation of the pinion is reversed.

[0006] From DE 10 2008 038 927 B3, a shock unit is known comprising a shock slide guided on a housing, a gearbox driving the shock slide via an externally driven drive shaft, and a lifting mechanism in which the shock slide moves backwards at least in a partial area of ​​its return stroke transversely to the working stroke against the tool feed movement.

[0007] The object of the invention is to provide a tool unit that is an alternative to the prior art and is distinguished by its performance characteristics.

[0008] To solve the problem, a driven tool unit with the features of the independent claim directed to such a driven tool unit is proposed. Specifically, to solve the problem, a driven tool unit for slotting is proposed, comprising a slotting slide, a tool carrier, and a drive shaft. The drive shaft and the slotting slide are connected to each other via a transmission, the transmission comprising at least one rack and at least two spur gears, namely a feed gear and a return gear, each of which is toothed over a partial circumference of its end faces. The feed gear is configured to transmit a feed motion to the slotting slide. The return gear is configured to transmit a return stroke motion to the slotting slide. The transmission can be described as a rack and pinion drive.

[0009] Thus, a driven tool unit for slotting can be created in which the feed motion, i.e., a slotting action, is transmitted from the feed gear to the slotting slide. A return stroke motion to the slotting slide, on the other hand, can be transmitted by the return stroke gear. Because the spur gears are only meshed over a portion of their respective circumferences, an alternating forward and reverse motion can be achieved, while the drive shaft always rotates in one direction. The tool unit according to the invention is characterized not only by its good performance characteristics but also by its comparatively compact design. This allows the tool unit to be easily used on a machine tool even when installation space is limited.

[0010] In an advantageous embodiment, the transmission can comprise at least one gear stage with which a rotary motion of the drive shaft can be converted into counter-rotating rotary motions of the spur gears. The tool unit itself can be without a drive. It is possible to drive the tool unit via the drive shaft using an external drive. The transmission, in particular the gear stage, can comprise bevel gears that form a bevel gear stage which transmits the rotary motion of the drive shaft at least indirectly to the return stroke gear, which generates the return stroke motion. The return stroke gear can, for example, rotate counterclockwise.

[0011] In an advantageous embodiment, at least one rack of the transmission can be connected to the pusher slide. Thus, movement of the at least one rack can be transmitted to the pusher slide.

[0012] In an advantageous embodiment, the tool unit can include a spring element with which the impact slide is spring-mounted and / or damped in at least one direction of movement. This allows, for example, the impact slide to be spring-loaded and / or damped when it strikes a housing. In particular, the spring element can be a spring-damper element. The spring-damper element can dampen and spring the movement of the impact slide, especially at at least one of its two reversal points. Furthermore, it can be provided that the impact slide is spring-loaded and / or damped in its forward movement and / or in its return stroke, for example, at both reversal points of its movement. The spring element can serve as an energy storage device to accelerate the impact slide from its rear end position in the direction of the forward movement.In one embodiment, the spring element serves as an energy storage device to accelerate the pusher slide from its forward end position in the direction of the return stroke. The feed gear can then engage with the rack on the pusher slide, which is already accelerated in the feed direction, to further drive the pusher slide. The feed gear's engagement of the moving pusher slide can prevent shocks, protect the feed gear and rack, and contribute to smoother operation of the driven tool unit. The spring element, particularly the spring-damper element, can preferably be equally relevant for both movements of the pusher slide, i.e., for the feed movement and the return stroke. For example, it can dampen both movements and / or contribute to accelerating the pusher slide from one or both reversal points to the aforementioned end positions of its movement.

[0013] The spring element can comprise at least one disc spring assembly. The disc springs of the disc spring assembly can absorb an impulse from the pusher slide when it is in its return stroke, thus decelerating the pusher slide and slowing its return stroke. The absorbed energy can be transferred back to the pusher slide to accelerate it into the feed stroke.

[0014] In an advantageous embodiment, the tool unit can include a lifting mechanism configured to perform a lifting movement of the tool holder transverse to the return stroke. The tool holder carries a tool for machining the workpiece for slotting. It is advantageous if the tool is lifted from the workpiece during the return stroke so that it does not rub against the workpiece during this movement. The lifting mechanism enables the tool to be lifted.

[0015] In an advantageous embodiment, the lifting mechanism can include a rocker arm on which the tool holder is mounted. The rocker arm is pivotally mounted on the rocker arm to execute the lifting movement of the tool holder, which is oriented transversely to the return stroke of the pusher slide. The lifting movement can be achieved particularly easily by means of the rocker arm, since the rocker arm only needs to tilt about one axis of the rocker arm to lift the tool holder from the workpiece.

[0016] In an advantageous embodiment, the lifting mechanism may comprise a linear axis and a toggle lever, the linear axis being connected to the toggle lever via the toggle lever. The toggle lever is configured to convert a linear movement of the linear axis into a lifting movement of the tool holder and is connected to the toggle lever for this purpose. Thus, a linear movement of the linear axis can be converted into a movement of the toggle lever, which ultimately, via the connection between the toggle lever and the toggle lever, leads to the lifting of the tool holder from a workpiece.

[0017] In an advantageous embodiment, the pusher slide may have a rocker arm receptacle in which the rocker arm is tiltably mounted. The rocker arm can thus be supported at two points: at the rocker arm itself and in the rocker arm receptacle. This allows the rocker arm to perform a lifting movement. The tool unit may include a sleeve that surrounds the rocker arm and / or the rocker arm receptacle. The sleeve can protect the rocker arm and / or the rocker arm receptacle from contamination and also simplify sealing of the tool unit. The rocker arm may also be tiltably mounted within the rocker arm receptacle.

[0018] In an advantageous embodiment, the linear axis can be mounted longitudinally displaceable along a longitudinal guide on the pusher slide. Since the linear axis can be connected to the toggle lever, this longitudinally displaceable mounting allows movement of the toggle lever.

[0019] The linear axis can have two linear gear sections, for example, rack sections, one of which is associated with the feed gear and the other with the return gear. One linear gear section can thus engage with the feed gear, while the other can engage with the return gear. The linear gear section that engages with the feed gear can be larger, more robust, and / or more stable, so that it can withstand more force than, for example, the other linear gear section that engages with the return gear. This allows the linear gear section associated with the feed gear to withstand the machining forces that occur during the feed motion.

[0020] Linear gearing can be provided as a rack section comprising a series of teeth arranged along a line.

[0021] In an advantageous embodiment, the linear gears can be arranged on the linear axis such that, when the return gear engages, the linear axis is in a first end position of its longitudinal guide. In particular, when the return gear engages, the linear axis can be in a rear end position in its longitudinal guide. When the return gear engages, the offset between the linear gear for the return gear and the linear gear on the pusher slide for the return gear can be reduced to such an extent that a toggle lever movement can occur, lifting the tool holder. Additionally, the linear gears can be arranged on the linear axis such that, when the feed gear engages, the linear axis is in a second end position in its longitudinal guide.In particular, the linear axis can be arranged in its longitudinal guide in a forward end position in the thrust direction when the feed gear engages. When the feed gear engages the linear gearing, any offset between the linear gearing for the feed gear and the linear gearing on the thrust slide for the feed gear can be reduced so that the tool holder can perform the thrust movement without angular change and without lifting.

[0022] In an advantageous embodiment, the linear teeth of the linear axis can have the same tooth spacing as the at least one rack of the pusher slide. The linear teeth of the linear axis and the linear teeth of the at least one rack can thus be in overlapping contact when engaged by the same tooth of a spur gear. This allows both linear teeth to be driven by the same tooth of a spur gear edge. If the linear teeth of the linear axis for the return gear and the linear teeth of the pusher slide for the return gear have the same tooth spacing, a lever movement can occur in the toggle lever, resulting in a lifting movement.If the linear teeth of the linear axis for the feed gear and the linear teeth of the pusher slide for the feed gear have the same tooth spacing, there is no lever movement in the toggle lever and consequently the tool holder can perform a pusher movement without changing the angle and without lifting.

[0023] In an advantageous embodiment, the tool unit can have an alignment mechanism with which the angular position of the tool holder can be adjusted in at least one degree of freedom. Thus, the tool holder of the tool unit can be tilted. Alternatively or additionally, the position of the tool holder can be adjustable in at least one degree of freedom. This allows the tool holder to be advantageously finely adjusted relative to the tool unit. In particular, the angular position and / or position of the tool holder relative to a base of the tool unit can be adjustable in at least one degree of freedom. The tool holder can therefore be adjusted relative to the base of the tool unit in an angle and / or position.In particular, the angle and / or position of the tool holder relative to a base of the tool unit can be adjusted in at least one degree of freedom along a spatial axis oriented transversely to the feed movement of the pusher slide. The tool holder can therefore be finely adjusted in a movement transverse to the feed movement of the pusher slide.

[0024] In an advantageous embodiment, the alignment mechanism for positioning the tool holder can include at least one sliding block. The tool holder can, for example, be positioned relative to the sliding block by means of screws.

[0025] In an advantageous embodiment, the alignment mechanism can be configured to adjust the angular position of the tool holder about at least one spatial axis oriented transversely to the feed movement. For example, the housing can be raised or lowered at one end relative to the base. This allows for fine adjustment at an angle about at least one spatial axis, which can be oriented transversely to the feed movement.

[0026] In an advantageous embodiment, the alignment mechanism can be configured to adjust the angular position of the tool unit relative to a mounting interface of a machine tool equipped with the tool unit about a rotational axis of the tool unit's drive shaft. If an adjustment about a rotational axis of the tool unit's drive shaft is necessary, the adjustment can be made using the alignment mechanism.

[0027] In an advantageous embodiment, the tool unit can have a base for connecting it to a mounting interface of a machine tool, with the drive shaft being arranged on the base. The base can therefore be mounted on a drive shaft extending from a motor. The base can be fastened to the machine tool using screws.

[0028] To solve the problem, a machine tool with the features of the independent claim directed to such a machine tool is also proposed. Specifically, to solve the problem, a machine tool with a tool unit according to one of the claims directed to such a unit is proposed.

[0029] To solve the problem, a method for slotting with a tool unit according to one of the previously described embodiments is further proposed, comprising at least the following steps: - Transmission of a drive motion, in particular a rotary motion, of a spur gear toothed at least over a partial circumference to a rack, wherein the rack is connected to the slide; - linear movement of the pusher slide along the longitudinal axis of the tool unit; - Damping of the linear movement of the impact slide by the damping element, in particular at least one disc spring.

[0030] The invention is described in more detail below with reference to an exemplary embodiment, but is not limited to this embodiment. Further exemplary embodiments result from combining the features of one or more claims with each other and / or with one or more features of the exemplary embodiment.

[0031] They show Fig. 1 a tool unit in perspective view, Fig. 2 the tool unit from Fig. 1 in perspective exploded view, Fig. 3 a part of the tool unit in perspective view from below, Fig. 4 the tool unit from Fig. 1-3 in a side view from below, Fig. 5 the tool unit from Fig. 1-4 in a sectional view from below, Fig. 6 the tool unit from Fig. 1-5 in a side view from the front, Fig. 7 the tool unit from Fig. 1-6 in a sectional view from above, Fig. 8 the tool unit from Fig. 1-7 in a side sectional view, Fig. 9 the tool unit from Fig. 1-8 in a further lateral sectional view and Fig. 10 a detailed view of the tool unit from Fig. 9.

[0032] Fig. Figure 1 shows the driven tool unit 1, designated in its entirety as 1. The tool unit 1 comprises a pusher slide 2, a tool carrier 3, and a drive shaft 4. The drive shaft 4 transmits a rotary motion 5 from the drive shaft 4 to the pusher slide 2, with the drive shaft 4 and the pusher slide 2 being connected to each other via a gearbox 6. The gearbox 6 comprises a rack 7 and two spur gears 8 and 9. These are configured as a feed gear 8 and a return gear 9. The feed gear 8 and the return gear 9 are meshed over a partial circumference 10 of their respective end faces 11. The feed gear 8 transmits a feed motion 12 to the pusher slide 2. The return gear 9 transmits a return motion 13 to the pusher slide 2.

[0033] A rotary motion 5 of the drive shaft 4 is converted by a gear stage 14 of the gearbox 6 into a counter-rotating motion 15, 16 of the spur gears 8, 9. In the illustrated embodiment, the feed gear 8 rotates clockwise 15, while the return gear 9 rotates counter-clockwise 16.

[0034] The rack 7 of the gearbox 6 is connected to the pusher slide 2.

[0035] The tool unit 1 comprises a spring element 17 with which a return stroke movement 13 of the impact slide 2 is spring-mounted, wherein the spring element 17 comprises several disc spring assemblies 18.

[0036] To execute a lifting movement 19 of the tool carrier 3, the tool unit 1 includes a lifting mechanism 20. The lifting movement 19 of the tool carrier 3 is transverse to the return stroke movement 13.

[0037] The lifting mechanism 20 comprises a rocker arm 21 on which the tool carrier 3 is arranged. The rocker arm 21 is mounted on the rocker arm 2 in such a way that it can be tilted to execute the lifting movement 19 of the tool carrier 3, which is oriented transversely to the return stroke movement 13 of the pusher slide 2.

[0038] The lifting mechanism 20 has a linear axis 22 and a toggle lever 23. The linear axis 22 is connected to the rocker arm 21 via the toggle lever 23. The toggle lever 23 is configured to convert a linear movement 24 of the linear axis 22 into the lifting movement 19 of the tool holder 3.

[0039] The pusher slide 2 has a rocker arm receptacle 51 in which the rocker arm 21 is mounted in a tiltable manner.

[0040] To protect the rocker arm 21 and the rocker arm receptacle 51, the tool unit 1 has a sleeve 25 that surrounds the rocker arm 21 and the rocker arm receptacle 51.

[0041] The linear axis 22 is mounted longitudinally displaceable along a longitudinal guide 26 on the pusher slide 2. The linear axis 22 has two linear gear teeth 27, 28, one of which, 27, is associated with the feed gear 8 and the other, 28, with the return gear 9. Thus, 27 engages with the feed gear 8, while 28 engages with the return gear 9.

[0042] The linear gears 27, 28 are arranged such that when the return gear 9 engages, the linear axis 22 is in a rear end position 30 in its longitudinal guide 26 on the pusher slide 2 in the direction of impact 29. When the feed gear 8 engages, the linear axis 22 is in a front end position 31 in the direction of impact 29 within its longitudinal guide 26. Fig. Figure 3 shows the arrangement of the linear axis 22 in the pusher slide 2 in a forward end position 31 in the direction of impact. Since the linear axis 22 is connected to the toggle lever 23, the previously described linear displacement of the linear axis 22 in its longitudinal guide 26 on the pusher slide 2 leads to a corresponding deflection of the toggle lever 23. The deflection of the toggle lever 23 then causes a corresponding tilting movement of the rocker arm 21, which, in the return stroke of the pusher slide 2, ultimately results in the execution of the lifting movement 19 of the tool carrier 3. At this point, the linear axis 22 is arranged in its longitudinal guide 26 on the pusher slide 2 in the rear end position 30 in the direction of impact 29.

[0043] The linear gears 27, 28 of the linear axis 22 have the same tooth spacing as the racks 32, 33 of the pusher slide 2. The rack 32 of the pusher slide 2 for the feed gear 8 corresponds to the linear gear 27 of the linear axis 22 for the feed gear 8. The rack 33 of the pusher slide 2 for the return gear 9 corresponds to the linear gear 28 of the linear axis 22 for the return gear. Thus, the spur gears 8, 9 can engage with the racks 32, 33 of the pusher slide 2 and with the linear gears 27, 28 of the linear axis 22.

[0044] The tool unit 1 has an alignment mechanism 34 with which an angular position and a position of the tool carrier 3 relative to a base 35 of the tool unit 1 can be adjusted.

[0045] For positioning the tool carrier 3, the alignment mechanism 34 has at least one sliding block 38. The alignment mechanism 34 can position the tool carrier 3 relative to a housing 42 of the tool unit 1. Fig. Figure 6 shows the sliding block 38, with which the tool carrier 3 can be positioned along a spatial axis 37 transverse to the feed movement 12.

[0046] The alignment mechanism 34 can adjust the angular position of the tool carrier 3 about a spatial axis oriented transversely to the feed movement 12. For example, the tool carrier 3 can be tilted about the spatial axis 37.

[0047] The alignment mechanism 34 can also adjust the angular position of the tool unit 1 relative to a mounting interface 39 of a machine tool (not shown) equipped with the tool unit 1 about a rotational axis 40 of the drive shaft 4 of the tool unit 1. In the embodiment shown in the figures, the rotational axis 40 of the drive shaft 4 is oriented in the direction of the spatial axis 36.

[0048] For connecting the tool unit 1 to a mounting interface of the machine tool, the tool unit 1 has a base 35. The drive shaft 4 is arranged on the base 35.

[0049] The tool unit 1 is used as intended on a machine tool not shown in the figures.

[0050] Fig. Figure 4 shows a further sliding block 43 of the alignment mechanism 34, wherein the sliding block 43 is arranged at the base 35 and enables the positioning of the tool unit 1 and the tool carrier 3 transverse to the feed movement 12.

[0051] The pusher slide 2 is guided in the housing 42 by a linear guide 41.

[0052] Fig. Figure 5 shows a sectional view of the gear stage 14. The drive shaft 4 transmits its rotary motion 5 via a bevel gear stage 44, which comprises two bevel gears, to a shaft 52, on which the return stroke gear 9 is also located. The shaft 52 carries a spur gear 53, which meshes with another spur gear 54 to transmit torque to a second shaft 55. The feed gear 8 is located on the second shaft 55.

[0053] The directions of rotation 15, 16 of the spur gears 8, 9 are in Fig. Figure 8 is shown with curved arrows. The return stroke gear 9, with its teeth 45 and toothed over a partial circumference 10, is also visible. The teeth 45 of the return stroke gear 9 engage with the rack 33 of the pusher slide 2 and move the pusher slide 2 in a return stroke movement 13.

[0054] Fig. Figure 9 shows how the teeth 46 of the feed gear 8 engage in the rack 32 of the slide 2 for the feed gear.

[0055] The in Fig.Figure 10, a detailed view of the alignment mechanism 34, shows that a screw 47 can be screwed into the base 35 on one side of the housing 42 facing away from the tool carrier 3, in order to tilt the housing 42 at an angle about the spatial axis 37. The spatial axis 37 can correspond to the axis of rotation of the shaft 52. Screwing in the screw 47 causes a sliding block 48, which has a sliding ramp 49, to be moved in one direction of the feed movement 12. A corresponding sliding block 50, on which the housing 42 is supported, moves along the sliding ramp 49 and is thereby lifted, tilting the housing 42 about the spatial axis 37.

[0056] A driven tool unit 1 for slotting is proposed, wherein the tool unit 1 comprises a pusher slide 2, a tool carrier 3 and a drive shaft 4, wherein the drive shaft 4 and the pusher slide 2 are connected to each other via a gearbox 6, wherein the gearbox 6 comprises at least a rack 7 and at least two spur gears 8, 9, namely a feed gear 8 and a return gear 9, each of which is toothed over a partial circumference 10 of their end faces 11, wherein the feed gear 8 is configured to transmit a feed movement 12 to the pusher slide 2 and the return gear 9 is configured to transmit a return movement 13 to the pusher slide 2. Reference symbol list 1 tool unit 2 push sleds 3 tool carriers 4 drive shaft 5. Rotational movement of the drive shaft 6 gearboxes 7 Rack 8 Spur gear, feed gear 9 Spur gear, return stroke gear 10 Partial scope 11 end faces 12 Feed movement 13 Return stroke 14 gear stages 15. Rotational movement, clockwise 16. Rotational movement, counterclockwise 17 Spring element 18 Belleville spring pack 19 Lift-off movement 20 Lifting mechanism 21 rocker arms 22 Linear axis 23 Knee levers 24 linear movement of the linear axis 25 sleeve 26 Longitudinal guidance 27 Linear gearing for the feed gear 28 Linear gear teeth for the return stroke gear 29 Direction of thrust 30 rear end position 31 front end position 32 Rack of the pusher slide for the feed gear 33 Rack of the pusher slide for the return stroke gear 34 Alignment mechanism 35 base 36 Spatial axis 37 Spatial axis 38 sliding block 39 Mounting interface 40 Rotation axis of the drive shaft 41 Linear guide 42 cases 43 sliding block 44 bevel gear stage 45 teeth of the return stroke gear 46 teeth of the feed gear 47 screw 48 sliding stone 49 Sliding slope 50 sliding stone 51 rocker arm mount 52 wave 53 Spur gear 54 Spur gear 55 wave

Claims

[1] A driven tool unit (1) for slotting comprising a pusher slide (2), a tool carrier (3) and a drive shaft (4), wherein the drive shaft (4) and the pusher slide (2) are connected to each other via a transmission (6), wherein the transmission (6) comprises at least a rack (7) and at least two spur gears (8, 9), namely a feed gear (8) and a return gear (9), each of which is toothed over a partial circumference (10) of their end faces (11), wherein the feed gear (8) is configured to transmit a feed movement (12) to the pusher slide (2) and the return gear (9) is configured to transmit a return movement (13) to the pusher slide (2). [2] Tool unit (1) according to claim 1, wherein the transmission (6) comprises at least one transmission stage (14) with which a rotary motion (5) of the drive shaft (4) can be converted into counter-rotating rotary motions (15, 16) of the spur gears (8, 9). [3] Tool unit (1) according to one of claims 1 or 2, wherein at least one rack (7) of the transmission (6) is connected to the pusher slide (2). [4] Tool unit (1) according to any one of the preceding claims, characterized by , that the tool unit (1) comprises a spring element (17), in particular a spring-damper element, with which the pusher slide (2), in particular in its feed movement (12) and / or in its return stroke movement (13), is spring-loaded and / or damped, preferably wherein the spring element (17) comprises at least one disc spring assembly (18). [5] Tool unit (1) according to any one of the preceding claims, characterized by , that the tool unit (1) includes a lifting mechanism (20) which is designed to perform a lifting movement (19) of the tool carrier (3) transverse to the return stroke movement (13). [6] Tool unit (1) according to the previous claim, wherein the lifting mechanism (20) comprises a rocker arm (21) on which the tool carrier (3) is arranged and which is tiltably mounted on the rocker arm (2) to execute the lifting movement (19) of the tool carrier (3) directed transversely to the return stroke movement (13) of the pusher slide (2). [7] Tool unit (1) according to the previous claim, wherein the lifting mechanism (20) has a linear axis (22) and a toggle lever (23), wherein the linear axis (22) is connected to the rocker arm (21) via the toggle lever (23) and the toggle lever (23) is configured to convert a linear movement of the linear axis (22) into the lifting movement (19) of the tool carrier (3). [8] Tool unit (1) according to the previous claim, wherein the pusher slide (2) has a rocker arm receptacle (51) in which the rocker arm (21) is tiltably mounted, and / or wherein the tool unit (1) has a sleeve (25) that surrounds the rocker arm (21) and / or the rocker arm receptacle (51). [9] Tool unit (1) according to one of the two preceding claims, wherein the linear axis (22) is mounted longitudinally displaceable along a longitudinal guide (26) on the pusher slide (2) and / or wherein the linear axis (22) has two linear gears (27, 28), one of which is associated with the feed gear (8) and one with the return stroke gear (9). [10] Tool unit (1) according to the previous claim, wherein the linear gears (27, 28) are arranged on the linear axis (22) such that the linear axis (22) is arranged in its longitudinal guide (26) when the return stroke gear (9) engages in a first end position, in particular in a rear end position (30) in the direction of impact (29), and is arranged in its longitudinal guide (26) when the feed gear (8) engages in a second end position, in particular in a front end position (31) in the direction of impact (29). [11] Tool unit (1) according to one of the two preceding claims, wherein the linear gears (27, 28) of the linear axis (22) have the same tooth spacing as the at least one rack (32) of the push slide (2). [12] Tool unit (1) according to any one of the preceding claims, characterized by, that the tool unit (1) has an alignment mechanism (34) with which an angular position and / or position of the tool carrier (3), in particular relative to a base (35) of the tool unit (1), can be adjusted in at least one degree of freedom, in particular in a spatial axis (36,37) oriented transversely to the feed movement (12) of the pusher slide (2). [13] Tool unit (1) according to the previous claim, wherein the alignment mechanism (34) for positioning the tool carrier (3) has at least one sliding block (38,43,48,50). [14] Tool unit (1) according to one of the two preceding claims, wherein the alignment mechanism (34) is configured to set an angular position of the tool carrier (3) about at least one spatial axis (36, 37) oriented transversely to the feed movement (12). [15] Tool unit (1) according to one of the three preceding claims, wherein the alignment mechanism (34) is configured to set an angular position of the tool unit (1) relative to a mounting interface (39) of a machine tool equipped with the tool unit (1) about a rotational axis (40) of the drive shaft (4) of the tool unit (1). [16] Tool unit (1) according to any one of the preceding claims, characterized by , that the tool unit (1) has a base (35) for connecting the tool unit (1) to a mounting interface (39) of a machine tool, wherein the drive shaft (4) is arranged on the base (35). [17] Machine tool comprising a tool unit (1) according to any of the preceding claims.

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