Tool-holding device, work machine with the tool-holding device, as well as a method for positioning a tool on a tool-holding device

11541524 · 2023-01-03

Assignee

Inventors

Cpc classification

International classification

Abstract

A tool-holding device (11) for holding a tool (13) on a work machine with a retaining unit (20) and with a lock unit (30). The lock unit (30) can be transferred from a receiving position into a fixing position, and the retaining unit (20) comprises a receiving section (21) for holding the lock unit (30) at least in sections. The lock unit (30) comprises a tool-holding section (33) for holding a tool (13) in a pre-positioned manner. A work machine with this tool-holding device and a method for positioning a tool (13) on a work machine are also disclosed.

Claims

1. A tool-holding device (11; 111; 211; 311) for holding a tool (13; 14; 15) on a cable processing machine, with a retaining unit (20; 120; 220; 320) and with a lock unit (30; 130; 230; 330), wherein the lock unit (30; 130; 230; 330) can be transferred from a receiving position into a fixing position and the retaining unit (20; 120; 220; 320) comprises a receiving section (21; 321) for holding the lock unit (30; 130; 230; 330) at least in sections, and the lock unit (30; 130; 230; 330) comprises a tool-holding section (33; 333) for a pre-positioned holding of a tool (13; 14; 15), wherein the tool-holding section (33: 333) holds the tool (13: 14: 15), prior to transferring the lock unit (30: 130: 230: 330) into the fixing position, independently and self-lockingly in position, wherein the lock unit (30; 130; 230; 330) comprises a fastening section (35; 335) for attaching the lock unit (30; 130; 230; 330) on the retaining unit (20; 120; 220; 320), a connection element (29; 329) is present, by which the lock unit (30; 130; 230; 330) is arranged on the retaining unit (20; 120; 220; 320) relative to this in a moveable manner, and the lock unit (30; 130; 230; 330) with the tool-holding section (33; 333) is pivotably arranged on the retaining unit (20; 120; 220; 320).

2. A tool-holding device according to claim 1, wherein the lock unit (30; 130; 230; 330) comprises an oblong hole (40; 340) with a longitudinal axis, and the lock unit (30; 130; 230; 330) can be linearly moved at least along the longitudinal axis (41; 341) of the oblong hole (40; 340).

3. The tool-holding device according to claim 1, wherein the lock unit (30; 130; 230; 330) comprises a pre-tensioning section (37; 337), the pre-tensioning section (37; 337) comprises an elastic pre-tensioning element (39; 339), and the pre-tensioning element (39; 339) is designed to position the lock unit (30; 130; 230; 330) at the fixing position and/or at the receiving position in a pre-tensioned manner.

4. The tool-holding device according to claim 3, wherein the pre-tensioning section (37) is arranged between the tool-holding section (33, 333) and a fastening section (35; 335) of the lock unit.

5. The tool-holding device according to claim 1, wherein the receiving section (21; 321) of the retaining unit (20; 120; 220; 320) fully accommodates the lock unit (30; 130; 230; 330).

6. The tool-holding device according to claim 1, wherein the receiving section (21; 321) of the retaining unit (20; 120; 220; 320) comprises a holding section (23; 323) with a fixing stop (25; 325) for temporarily fixing the tool (13; 14; 15) in the fixing position, the retaining unit (20; 120; 220; 320) comprises a receiving stop (22), and the holding section (23; 323) is wedge-shaped.

7. The tool-holding device according to claim 1, wherein the tool-holding section (33; 333) of the lock unit (30; 130; 230; 330) comprises at least one accommodating space (34; 334) for holding at least one tool (13; 14; 15), the accommodating space (34; 334) on the tool-holding section (33; 333) comprises a holding stop (36; 336), which is designed to establish an operative connection to a fixing stop (25; 325) on the holding section (23; 323) of the retaining unit (20; 120; 220; 320) at least temporarily, and the accommodating space (34; 334) on the tool-holding section (33; 333) is U-shaped.

8. The tool-holding device according to claim 7, wherein the accommodating space (34; 334) on the tool-holding section (33; 333) comprises a tool coding (50; 150; 250).

9. The tool-holding device claim 1, wherein an unlocking device (45; 345) for unlocking the lock unit (30; 130; 230; 330) is present, and the unlocking device (45; 345) is designed to transfer the lock unit (30; 130; 230; 330) from the fixing position into the receiving position.

10. The tool-holding device according to claim 9, wherein the unlocking device (45; 345) comprises an unlocking pin (46; 346), which is designed to counteract a pre-tensioning force on the lock unit (30; 130; 230; 330), and the unlocking pin (46; 346) can be moved in a direction of a longitudinal axis of an oblong hole (40; 340).

11. The tool-holding device according to claim 10, wherein the unlocking device (45; 345) comprises a return element (47) for returning the unlocking pin (46; 346) from an release position to a holding position, and the return element (47; 347) is designed as a spring element (48; 348).

12. A cable processing machine (400) with a tool-holding device (11; 111; 211; 311) according to claim 1.

13. The cable processing machine according to claim 12 wherein the retaining unit (20; 120; 220; 320) of the tool-holding device (11; 111; 211; 311) is arranged in a detachable manner.

14. A method for positioning a tool (13; 14; 15) on a tool-holding device with a tool-holding device (11; 111; 211; 311) according to claim 1, wherein the method comprises the following steps: a) opening a lock unit (30; 130; 230; 330), and the lock unit (30; 130; 230; 330) is transferred from a fixing position into a receiving position for holding the tool (13; 14; 15); b) arrangement of a tool (13; 14; 15) on a tool-holding section (33; 333) of the lock unit (30; 130; 230; 330), and the tool (13; 14; 15) is then held in the tool-holding section (33; 333) in a pre-positioned manner, wherein the tool-holding section (33: 333) hold the tool (13: 14: 15), prior to transferring the lock unit (30: 130: 230: 330) into the fixing position, independently and self-lockingly in position; c) closing the lock unit (30; 130; 230; 330), and the lock unit (30; 130; 230; 330) along with the tool (13; 14; 15) arranged in the tool-holding section (33; 333) are transferred from the receiving position into the fixing position.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The figures show:

(2) FIG. 1 a first embodiment of a tool-holding device according to the invention for a first tool in a perspective view,

(3) FIG. 2 the tool-holding device in accordance with FIG. 1, wherein the lock unit is in a fixing position in a sectional view,

(4) FIG. 3 the tool-holding device in accordance with FIG. 2, wherein the lock unit is in an unlocking position in a sectional view,

(5) FIG. 4 the tool-holding device in accordance with FIG. 2, wherein the lock unit is in a receiving position in sectional view,

(6) FIG. 5 another embodiment of the tool-holding device for another tool in a perspective view,

(7) FIG. 6 the tool-holding device in accordance with FIG. 5 for the other tool in a sectional view,

(8) FIG. 7 another embodiment of the tool-holding device for another tool in a perspective view,

(9) FIG. 8 the tool-holding device in accordance with FIG. 7 for the other tool in a sectional view,

(10) FIG. 9 another embodiment of the tool-holding device for the first tool in a perspective view,

(11) FIG. 10 the tool-holding device in accordance with FIG. 9 without a tool, wherein the lock unit is in the receiving position in a sectional view,

(12) FIG. 11 the tool-holding device in accordance with FIG. 10 without tools, wherein the lock unit is in an unlocking position in a sectional view,

(13) FIG. 12 the tool-holding device in accordance with FIG. 10 without a tool, wherein the lock unit is in a fixing position in a sectional view,

(14) FIG. 13 the tool-holding device in accordance with FIG. 10 with a tool, wherein the lock unit lock unit is in the receiving position in a sectional view,

(15) FIG. 14 the tool-holding device in accordance with FIG. 10 with a tool, wherein the lock unit is in an unlocking position in a sectional view,

(16) FIG. 15 the tool-holding device in accordance with FIG. 10 with a tool, wherein the lock unit is in a fixing position in a sectional view, and

(17) FIG. 16 a work machine according to the invention with a tool-holding device in accordance with FIG. 1 in a perspective view.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(18) FIG. 1 to FIG. 4 show a tool-holding device 11 for holding a tool 13. The tool-holding device 11 comprises a retaining unit 20 and a lock unit 30. A receiving section 21 for holding the lock unit 30 is arranged on the retaining unit 20, wherein the receiving section 21 comprises a holding section 23 and a fixing stop 25 for temporarily fixing the lock unit 30 in a fixing position. In the fixing position, the lock unit 30 is completely arranged in the receiving section 21. The fixing stop 25 prevents an independent or undesirable opening of the lock unit 30 at a work machine during operation. The holding section 23 is wedge-shaped so that the lock unit 30 can slide along the wedge-shaped holding section 23 at least in sections when closing.

(19) Furthermore, a receiving stop 22 is provided on the retaining unit 20 for positioning the lock unit 30 in the receiving position. Thereby, the lock unit 30 is stopped when transferred to the receiving position, wherein the lock unit 30 abuts the receiving stop 22 in sections. The retaining unit 20 additionally comprises a positioning section 26 for positioning the tool-holding device 11 on a work machine. An oblong positioning hole 28 and a positioning joint 27 are present on the positioning section 26, by means of which the retaining unit 20 can be positioned along the longitudinal extension of the positioning oblong hole 28 in an adjustable and is also arranged on the work machine in a detachable manner. Furthermore, the retaining unit 20 comprises a catch section 24, on which a connection element 29 is arranged, which is designed as a bolt here.

(20) The lock unit 30 comprises a tool-holding section 33 with an accommodating space 34 for holding and the pre-positioned holding of the tool 13, which is designed here as an impact tool (see FIG. 1) in the present case. In the present case, by a pre-positioned holding, an independent holding of the tool 13 in the tool-holding section 33 of the lock unit 30 is understood, which is held in the tool-holding section 33 in a pre-positioned manner. In particular, an impact tool is designed to exert compression force onto a workpiece.

(21) The lock unit 30 furthermore comprises a fastening section 35 for attaching the lock unit 30 on the retaining unit 20, as well as a pre-tensioning section 37. In this case, the fastening section 35 is separated from the tool-holding section 33 and the pre-tensioning section 37 locally, wherein the pre-tensioning section 37 is arranged between the fastening section 35 and the tool-holding section 33.

(22) An elastic pre-tensioning element 39 is arranged in the pre-tensioning section 37. The elastic pre-tensioning element 39 is designed to position the lock unit 30 at the fixing position as well as in the receiving position in the retaining unit 30 in a pre-tensioned manner. In accordance with this embodiment of the tool-holding device 11, a helical spring is provided as an elastic pre-tensioning element 39.

(23) The lock unit 30 can be transferred from the fixing position (FIG. 2) into an unlocking position (FIG. 3) and further into a receiving position (FIG. 4) and, in reverse order, back into the fixing position. The embodiment of the tool-holding devices shown here illustrates a pivoting lock unit 30.

(24) The lock unit 30 comprises an oblong hole 40 with a longitudinal axis 41, wherein the lock unit 30 can be linearly moved along the longitudinal axis 41 of the oblong hole 40. The connection element 29 is designed as a pivoting aid, wherein the lock unit 30 is positioned on the retaining unit 30 with the aid of the connection element 29, and the lock unit 30 with the tool-holding section 33 can be pivoted around the connection element 29. The connection element 29 of the retaining unit 20 thereby engages into the oblong hole 40 of the lock unit 30 and can be moved along a defined vertical path of travel in the oblong hole 40.

(25) The accommodating space 34 on the tool-holding section 33 is U-shaped and comprises a holding stop 36 so that the lock unit 30 can be easily held in the fixing position. The holding stop 36 shown is designed as a section of the lock-unit wall 31 in the region of the accommodating space 34. The holding stop 36 is formed in order to establish an operative connection with the fixing stop 25 on the holding section 23 of the retaining unit 20 at least temporarily, i.e. at least in the fixing position of the lock unit 30. The holding stop 36 rests touching on the fixing stop 25.

(26) The tool-holding device 11 comprises an unlocking device 45 for unlocking the lock unit 30. The unlocking device 45 is arranged on the retaining unit 20 and is designed to transfer the lock unit 30 from the receiving position into the unlocking position. The unlocking device 45 comprises an unlocking pin 46, which can be transferred from a holding position (FIG. 2) into an release position (FIG. 3), and which is designed to counteract the pre-tensioning force of the elastic pre-tensioning element 39 on the lock unit 30. The unlocking pin 46 can be moved in the direction of the longitudinal axis 41 of the oblong hole 40. The unlocking pin 46 is bevelled on side facing the lock unit 30 so that the lock unit 30 can slide along the bevel 49 towards the receiving position. The unlocking device 45 here comprises a helical spring as a return element 47 for returning the unlocking pin 46 from the release position into the holding position. If the unlocking pin 46 is transferred from the holding position into release position, then, the lock unit 30 is also transferred from the fixing position to its unlocking position (see FIG. 3). An unlocking-pin safeguard 48 is arranged on the retaining unit 30 as a bolt safeguard so that an undesirable separation of the unlocking pin 46 from the retaining unit 20 can be prevented, and the bevel 49 from the unlocking pin 46 is always correctly orientated towards the lock unit 30. The previously defined vertical path of travel of the connection element 29 extends substantially along the longitudinal axis 41 in the oblong hole 40 so that the lock unit 30 can then be pivoted from the unlocking position into the receiving position.

(27) The tool 13 shown in FIG. 1 to FIG. 4 comprises a cylindrical base body 19 with a circular base-body diameter so that this can be easily arranged into the U-shaped accommodating space 34. Both the tool 13 as well as the accommodating space 34 on the tool-holding section 33 of the shown tool-holding device 11 each comprise a tool coding 50 or 51.

(28) Based on the FIGS. 2 to 4, a method for positioning a tool 13 on the tool-holding device 11 is now shown in the following.

(29) The method entails opening the lock unit 30, wherein the lock unit 30 can be transferred from the fixing position into a receiving position for holding the tool 13 (step a). During this transfer, the lock unit 30 is initially moved linearly from the fixing position (FIG. 2) into the unlocking position (FIG. 3) along the longitudinal axis 41 and then pivoted into the receiving position (FIG. 4). The transfer is carried out by means of the unlocking device 45, which is manually operated by the user of the tool-holding devices 11. For this purpose, the unlocking device 45 comprises an unlocking pin 46, which is arranged at the retaining unit 20 and by means of which the lock unit 30 is moved into the unlocking position. In this case, the unlocking pin 46 is initially in its holding position (FIG. 2), in which the lock unit 30 is held in the retaining unit 20 and is subsequently transferred into its release position (FIG. 3) where the lock unit 30 is released. During this transfer, the unlocking pin 46 counteracts the pre-tensioning force at the lock unit 30 and exceeds this pre-tensioning force. Thereby, the return element 47, which is designed as a helical spring, is compressed. Simultaneously, the elastic pre-tensioning element 39 is compressed in the pre-tensioning section 37 and the operative connection between the holding stop 36 on the tool-holding section 33 and the fixing stop 25 on the holding section 23 of the retaining unit 20 is detached (FIG. 3). Thereby, the connection element 29 is linearly moved along the oblong hole 40 towards the accommodating space 34 to the unlocking position.

(30) Subsequently, the lock unit 30 slides along the wedge-shaped holding section 23 of the retaining unit 20 in its receiving position, wherein the pivot movement of the lock unit 30 by the receiving stop 22 of the retaining unit 20 is stopped. In the following, the unlocking pin 46 is subsequently transferred with the aid of the return element 47 from its release position (FIG. 3) in its holding position (FIG. 4), wherein the return element 47 is relaxed. When sliding the lock unit 30 along the wedge-shaped holding section 23 of the retaining unit 20, the connection element 29 moves linearly along the oblong hole 40 in the opposite direction away from the accommodating space 34, wherein the elastic pre-tensioning element 39 is relaxed.

(31) Subsequently, the tool 13 is arranged on the tool-holding section 33 of the lock unit 30, wherein the tool 13 is held in the tool-holding section 33 in a pre-positioned manner ((step b); FIG. 4). A tool 13 held in a pre-positioned manner in the accommodating space 34 of the tool-holding section 33 is shown in the FIG. 1.

(32) Finally, the closing of the lock unit 30 is carried out, wherein the lock unit 30 is transferred along with the tool 13 arranged in the tool-holding section 33 are transferred from the receiving position (FIG. 4) into the fixing position (FIG. 2) (step c). Thereby, the lock unit 30 with the tool 13 arranged therein initially slides along the wedge-shaped holding section 23 into the unlocking position (FIG. 3) and is then moved linearly with the aid of the elastic pre-tensioning element 39 into the fixing position (FIG. 2).

(33) The previously shown method for positioning a tool 13 on a work machine with a tool-holding device 11 can be carried out both with the aid of the tool-holding device 11 in accordance with FIGS. 1 to 4, as well as with the aid of the tool-holding device 111 in accordance with FIG. 5 and FIG. 6, or the tool-holding device 211 in accordance with FIG. 7 and FIG. 8.

(34) FIG. 5 and FIG. 6 show another tool-holding device 111, which is essentially designed as the previously described tool-holding device 11. The tool-holding device 111 in accordance with FIG. 5 and FIG. 6 differs, for example, from the tool-holding device 11 in accordance with FIG. 1 to FIG. 4 in that a different tool 14 can be arranged in the accommodating space 134 of the lock unit 130. The lock unit 130 is arranged in the retaining unit 120 of the tool-holding device 111, wherein the retaining unit 120 has constructional differences to the retaining unit 20. Otherwise, this tool-holding device 111 has the previously described constructive and functional features to a great extent. The tool shown here 14 also comprises a cylindrical base body 14a with a circular base-body diameter so that this can be easily arranged in the U-shaped accommodating space 134. The tool codings 150 and 151 on the tool-holding devices 111 are complementary to each other so that only one tool 14 with its corresponding tool codings 150 can be arranged in the accommodating space 134 with the tool codings 151. In other words, no tools are accepted in the accommodating space 134, which comprise a tool coding 150 that is non-complementary to tool coding 151. The shown tool coding 150 on the tool 14 is designed with different diameters on the cylindrical base body of the tool 14. The shown tool coding 151 in the accommodating space 134 is formed by the projections complementary thereto in the accommodating space 134. The previously described unlocking device 145 is arranged on the retaining unit 120.

(35) FIG. 7 and FIG. 8 show another tool-holding device 211, which is essentially designed as the previously described tool-holding device 11 or 111. The tool-holding device 211 in accordance with FIG. 7 and FIG. 8 differs, for example, from the tool-holding device 11 in accordance with FIG. 1 to FIG. 4 in that a different tool can be arranged in the accommodating space 234 of the lock unit 230. Otherwise, this tool-holding device 211 largely comprises the previously described features. The lock unit 230 is arranged in the retaining unit 220 of the tool-holding device 211. The accommodating space 234 of the lock unit 230 comprises another tool coding 250 or 251 with two projections 252 and 253, which extend towards the accommodating-space centre of the accommodating space 234. The two projections 252 and 253 have different projection thicknesses, whereby the tool coding 250 is specified. The shown tool 15 comprises two recesses 17 and 18 on its cylindrical base body 16, which are complementary to the projections 252 and 253. The previously described unlocking device 245 is arranged on the retaining unit 220.

(36) Tool codings, which are designed differently to the previously shown tool codings, can also be used in the embodiments of the tool-holding device shown here. In particular, if the accommodating space on the lock unit is, for example, square-shaped and/or polygonal. For example, a tool with a base body that has a corresponding square or rectangular base-body cross-section can be arranged (not shown).

(37) FIG. 9 to FIG. 15 show a tool-holding device 311 as another embodiment of the tool-holding device 11 in accordance with FIG. 1 to FIG. 4. Thereby, this tool-holding device 311 largely comprises the same features or components, as already shown previously. The tool-holding device 311 does not show a receiving stop, wherein, however, this could also be present on this tool-holding device 311. The tool-holding device 311 comprises an unlocking device 345, which differs from the previously shown unlocking device in accordance with FIG. 1 to FIG. 4 with regard to its structure, however not with regards to its functionality. The unlocking device 345 is arranged here on the lock unit 330.

(38) Based on the FIG. 10 to FIG. 15, another method for positioning a tool 13 on a tool-holding device 311 is now shown in the following. In this case, the tool-holding device 311, as previously shown, comprises a lock unit 330 and a retaining unit 220, wherein the lock unit 330 is arranged in its fixing position in the receiving section 321 of the retaining unit. The method shown in the following for positioning a tool 13 on a work machine with a tool-holding device 311 can be carried out both with the aid of the tool-holding device 11 in accordance with FIGS. 1 to 4, as well as with the aid of the tool-holding device 111 in accordance with FIG. 5 and FIG. 6, or the tool-holding device 211 in accordance with FIG. 7 and FIG. 8.

(39) The method entails opening the lock unit 330, wherein the lock unit 330 can be transferred from the fixing position into a receiving position for holding the tool 13 (step a). During this transfer, the lock unit 330 is initially moved linearly from the fixing position (FIG. 10) into the unlocking position (FIG. 11) along the longitudinal axis 341 and then pivoted into the receiving position (FIG. 12). The transfer is carried out by means of the unlocking device 345, which is manually operated by the user of the tool-holding devices 311. The unlocking device 345 comprises an unlocking pin 346, which is arranged on the lock unit 330 and by means of which the lock unit 330 is moved into the unlocking position. Thereby, the pre-tensioning element 339, which is designed here as a helical spring, is compressed in the pre-tensioning section 337 and the operative connection between the holding stop 336 at the tool-holding section 333 and the fixing stop 325 on the holding section 323 of the retaining unit 320 is detached (FIG. 11). The pre-tensioning section 337 is arranged between the fastening section 335 and the tool-holding section 333 at the lock unit 330.

(40) Simultaneously, the connection element 329 is linearly moved along the oblong hole 340 in the direction of the accommodating space 334 towards the unlocking position.

(41) Subsequently, the lock unit 330 slides along the wedge-shaped holding section 323 of the retaining unit 320 in its receiving position. In this case, the wedge-shaped holding section 323 comprises a wedge angle α, wherein the lock unit 330 slides along the wedge-shaped holding section 323 when transferring into the receiving position with the lock-unit wall 331. When opening, the lock unit 330 is thereby pivoted from the unlocking position to the receiving position along the opening angle. The opening angle β is described with the aid of the lock-unit wall thickness d, the accommodating-space diameter c, the wedge angle α and the lock-unit length e, wherein the opening angle β is defined with

(42) opening angle β > tan - 1 ( accommodating - space diameter c + lock - unit wall thickness d lock - unit length e ) .

(43) When sliding the lock unit 330 along the wedge angle a, the elastic pre-tensioning element 339 is pushed apart again so that the connection element 329 is moved along the longitudinal axis 341 in the oblong hole 340. This previously described construction of the retaining unit 330 including the functional features can also be used in the embodiments of the tool-holding devices in accordance with FIG. 1 to FIG. 8 and complement the previously described methods.

(44) Subsequently, the tool 13 is arranged on the tool-holding section 333 of the lock unit 330, wherein the tool 13 is held in the tool-holding section 333 in a pre-positioned manner (step b); (FIG. 13). A tool 13 held in a self-locking manner in the accommodating space 334 of the tool-holding section 333 is shown in the FIG. 9.

(45) In conclusion, the closing of the lock unit 330 takes place, wherein the lock unit 330 along with the tool 13 arranged in the tool-holding section 333 are transferred from the receiving position (FIG. 13) into the fixing position (FIG. 15) (step c). Thereby, the lock unit 330 initially slides along the wedge-shaped holding section 323 into the unlocking position (FIG. 14) and is then moved linearly with the aid of the elastic pre-tensioning element 339 into the fixing position (FIG. 15).

(46) FIG. 15 shows the tool-holding device 311, wherein the lock unit 330 along with the tool 13 are in the fixing position. Thereby, the tool 13 is held in the tool-holding device 311 in the fixing position with the aid of a three-point support. A first support point A is on the holding section 323 of the retaining unit 320, wherein the tool 13 is pressed to the first support point A in the fixing position. Further support points B and C are in the accommodating space 334 of the lock unit 330, wherein the tool 13 is thereby pressed in the fixing position onto the support points B and C. This structure along with the three-point support of the tool in the fixing position can also be present in the aforementioned embodiments of the tool-holding device 11 or 111 or 211.

(47) FIG. 16 shows a cable processing machine 400 as a work machine with the tool-holding device 111 in accordance with FIG. 5 to FIG. 6 and with a fastening device 401. Alternatively to this, the previously shown tool-holding device 11 or 211 or 311 can also be arranged on the fastening device 401. The tool-holding device 111 comprises the retaining unit 120 and the lock unit 130 as well as the unlocking device 145, as described above, and is arranged on the fastening device 401 of the cable processing machine 400 in a detachable manner, wherein fastening means 402 are present for detaching the tool-holding device 111.

Reference List

(48) 11 tool-holding device 13 tool 14 other tool 14a cylindrical base body of 14 15 other tool 16 cylindrical base body of 15 17 first recess of 15 18 second recess of 15 19 cylindrical base body of 13 20 retaining unit 21 receiving section 22 receiving stop 23 holding section 24 catch section 25 fixing stop 26 positioning section 27 positioning joint 28 oblong positioning hole 29 connection element 30 lock unit 31 lock-unit wall 33 tool-holding section 34 accommodating space 35 fastening section 36 first holding stop 37 pre-tensioning section 38 39 elastic pre-tensioning element 40 oblong hole 41 longitudinal axis 45 unlocking device 46 unlocking pin 47 return element 48 unlocking-pin safeguard 49 bevel of 46 50 tool coding in 34 51 tool coding of 13 111 tool-holding device 120 retaining unit 130 lock unit 134 accommodating space 145 unlocking device 150 tool coding in 134 151 tool coding of 14 211 tool-holding device 220 retaining unit 230 lock unit 234 accommodating space 245 unlocking device 250 tool coding in 134 251 tool coding of 15 252 first projection of 251 253 second projection of 251 311 tool-holding device 320 retaining unit 321 receiving section 323 holding section 325 fixing stop 329 connection element 330 lock unit 333 tool-holding section 334 accommodating space 335 fastening section 336 holding stop 337 pre-tensioning section 339 elastic pre-tensioning element 340 oblong hole 341 longitudinal axis 346 unlocking pin 400 work machine 401 fastening device 402 fastening means α wedge angle β opening angle c accommodating-space diameter d lock-unit wall thickness e lock-unit length A-C support points