EP1622731B1 - Tool holding fixture - Google Patents

Abstract

The invention relates to a tool-receiving device (1) comprising a tool girder (2) that is provided with a clamping device (5), a groove-shaped tool (4) seat (3) located inside the tool girder (2), especially for the top tool of a folding press, at least one locking element (39) that is movable in a tool head (50) in a direction extending perpendicular to a lateral area (41, 42) of the tool, and a retaining mechanism (14) for the tools (4). Guiding members (18) are disposed equidistant (46) from each other in a longitudinal direction (16) within a leg (19) of the tool girder (3). Said guiding members (18), inside which retaining means (15) for the tools (4) are mounted in a displaceable manner, extend perpendicular to the longitudinal direction (16).

Description

The invention relates to a tool receiving device, as described in the preamble of claim 1. Such a device is from the EP 0494714 A1 known.

From the DE 100 54 644 A1 is a plate-forming press with a clamping piece and tools for an adjustable press bar of the molding press known. In the tool a to a side surface and this in a locking position with the clamping piece engageable, biased by a compression spring locking element in the direction perpendicular to the side surface direction is arranged adjustable. In the clamping piece in an aligned arrangement with the locking element a counter to the action of a compression spring in the direction of the locking element adjustable actuating element is arranged, with which in an adjustment in the direction of the locking element out of engagement with the terminal block can be brought and thus the tool can be removed from the tool holder , The disadvantage here is the one-sided holding torque, whereby the tool is not secured against tilting before the clamping operation with the clamping piece.

From the EP 0 494 714 A1 Furthermore, a pressing tool with a tool holder for a press brake is known, wherein in the tool a side surface superior and adjustable in this direction vertical locking element is arranged, which engages to secure the tool in a receiving groove of the tool holder and the arranged via an actuating device arranged in the tool the locking position in an unlocked position in which the securing means is disengaged from the receiving groove, is adjusted. Such equipped tools require a complex design or larger dimensions and cause high basic and consequential costs due to the large number required for the assembly of a press brake tools.

The object of the invention is to provide a tool receiving device and a bending tool, which ensures a safe removal of the bending tool from the tool receiving device after releasing a bending tool for a work fixing fixture.

This object of the invention is achieved by the tool receiving device according to the characterizing features solved in claim 1. The surprising advantage of this is that with the retaining device according to the invention over a whole length of a tool bar guaranteed fall protection is achieved, the insertion and juxtaposition of tools regardless of their length and the position in the tool bar, so an exact vote of the tooling on the intended manufacturing process allows.

Advantageous are the described in claims 2 and 3, advantageous embodiments, because it over a long period of use, the required precision of the retainer is achieved.

But also advantageous is an embodiment according to claim 4, whereby over a total length of the tool bar acting without interruptions retention is achieved.

According to the advantageous development as described in claim 5, a large span is achieved, whereby a secure positioning of the tool is achieved.

The advantageous embodiments according to claims 6 and 7 ensure a cost-effective and fail-safe operation of the retaining means in a permanent restraint position, which is by a manual adjustment, in which the tools to be removed in a secure handling to pick up.

The advantageous developments according to claims 8 and 9 cause an exact positioning of the retaining means and thus the exact limitation of the tool holder in the tool bar.

Due to the advantageous embodiment described in claim 10, an interruption-free actuating surface for arranged in the tool head and this is formed on side surfaces superior locking elements.

The training described in claim 11 ensures a tilt-free retention position for the tools.

Another advantage is an embodiment according to claim 12, whereby the relative adjustability of the oppositely arranged locking elements is achieved by simple technical means and both a one-sided and on both sides needs-adjusted adjustability is given.

According to the advantageous development characterized in claim 13, a pre-positioning of the tool is achieved in the assembly of the tool bar.

The advantageous embodiment characterized in claim 14 ensures a universal use of tools in the tool bar, as they are available in standard versions.

Further advantageous embodiments describe the claims 15 and 16, whereby a simplified and inexpensive variant of the retaining device according to the invention is achieved.

By characterized in the claims 17 to 19 advantageous developments are easily and thus economically achievable elements for the realization of cooperating with the retainer according to the invention tools.

But it is also an embodiment according to claim 20 of advantage, whereby the insertion of a tool in the tool bar simplified and achieved without auxiliary equipment.

According to the advantageous embodiment characterized in claims 21 and 22, the tool is pre-positioned without tension in the tool bar.

By characterized in claim 23 advantageous embodiment, a symmetrical arrangement of the locking elements in the tool head and thus an inexpensive tool production is achieved.

Finally, however, an embodiment according to claim 24 is advantageous because thereby the insertion slot of the tool holder with a slight oversize, relative to the thickness of the tool head, executable and thus the tool can be introduced with appropriate guidance in the tool holder.

For a better understanding of the invention, this will be explained in more detail with reference to the embodiments shown in FIGS.

Fig. 1

eine erfindungsgemäße Werkzeugaufnahmevorrichtung mit einem Biegewerkzeug geschnitten gemäß den Linien I-I in Fig. 2;

Fig. 2

die erfindungsgemäße Werkzeugaufnahme in Ansicht;

Fig. 3

eine detaillierte Darstellung der erfindungsgemäßen Werkzeugaufnahmevorrichtung mit dem in der Werkzeugaufnahme gespannten Werkzeug nach Fig. 1;

Fig. 4

die erfindungsgemäße Werkzeugaufnahmevorrichtung mit dem Werkzeug in Entnahmestellung, geschnitten;

Fig. 5

die erfindungsgemäße Werkzeugaufnahmevorrichtung mit dem Werkzeug in Einführposition, geschnitten;

Fig. 6

eine weitere Ausbildung der erfindungsgemäßen Werkzeugaumahmevorrichtung mit dem Werkzeug, geschnitten.

Show it:

Fig. 1

a tool receiving device according to the invention with a bending tool cut according to the lines II in Fig. 2 ;

Fig. 2

the tool holder according to the invention in view;

Fig. 3

a detailed view of the tool receiving device according to the invention with the tensioned in the tool holder tool after Fig. 1 ;

Fig. 4

the tool holding device according to the invention with the tool in the removal position, cut;

Fig. 5

the tool receiving device according to the invention with the tool in the insertion, cut;

Fig. 6

a further embodiment of the tool mounting device according to the invention with the tool cut.

By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, the disclosures contained in the entire description can be mutatis mutandis to the same parts with the same reference numerals or component names. Also, the position information selected in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and are to be transferred to a new position analogous to the new situation.

In the Fig. 1 and 2 is a tool receiving device 1 with a tool bar 2, which is movably connected to an adjustable press bar and shown with a releasably supported in a groove-shaped tool holder 3 tool 4. This is an upper one. Bending tool for forming sheet metal parts, eg in a press brake. The tool 4 is in the tool holder 3 via a known from the prior art clamping device 5, for example, at least one pressurized with a pressure medium clamping cylinder 6, positioned tensioned, wherein the clamping cylinder 6 with an adjustable wedge-shaped clamping surfaces 7 forming clamping bolt 8 in a trapezoidal cross-section having clamping groove 9 of the tool 4 engages. This is achieved in cooperation of the clamping surfaces 7 with the clamping groove 9 a backlash bearing the tool 4 on a clamping bolt 8 opposite side surface 10 and perpendicular thereto to stop surfaces 11 on both sides of the tool holder 3 of the tool 4 integrally formed shoulders 12. This training is referred to as shoulder-bearing tool positioning. For tools 4 without shoulders 12, the tool 4 is struck at the side surface 10 perpendicular to the receiving base surface 13 of the tool holder 3 and this is called head-carrying tool positioning.

To remove the tool 4 from the tool receiving device 1, it is necessary to adjust the clamping bolt 8 by an adjustment, by canceling the pressurization of the clamping cylinder 6, against the clamping direction, from the area of the tool holder 3. In order to avoid an accidental crash of the so-called hanging tool 4 from the tool holder 3 in such a process, the tool receiving device 1 is provided with a retaining device 14.

The retaining device 14 of the tool receiving device 1 is substantially formed by retaining means 15 arranged in the direction of a length 16 arranged T-slot nuts 17, which are arranged in guides 18 in one of the tool holder 3 laterally bounding legs 19. The T-nuts 17 are in the guides 18 which are parallel to each other and at right angles to a median plane 20 of the tool holder 3 and formed by T guide grooves 21 - according to double arrow 22 - slidably mounted and strung together directly. They are formed from a T-guide projection 23 which slidably engages in the T-guide grooves 21 and which is mounted on a locking block 24 is arranged, which protrudes in a locking position in which the tool 4 is to be secured against an automatic fall, a width 25 of the tool holder 3 in the region of an insertion slot 26 for the tool 4 in the tool holder 3, that the locking block 24 has a side surface 27 of the receptacle 3 in the direction of the tool 4 surmounted by a projection 28. The arrangement of the T-nuts 21 is provided in the clamping device 5 receiving leg 19 of the tool holder 1.

The T-nuts 17 are in the locking position in which the locking block 24 projects beyond the side surface 27, by means of a spring assembly 29, in the illustrated embodiment, spring tongues 30, one attached to an outer surface 31 of the tool bar 2 spring plate 32 formed with the spring tongues 30, as a result a bias, on a face 33 of the T-nuts 17 a spring force - according to arrow 34 - in the direction of the median plane 20 exerts.

A T-guide grooves 21 and thus the adjustment of the T-nut blocks 17 in the direction of the tool holder 3 limiting abutment surface 35 is formed by a arranged in the tool holder 3 Abstreifblech 36, facing the tool holder 3, the tool 4 and the side surface 27 forming , is attached to the leg 19.

The locking block 24 projecting around the projection 28 into the region of the tool holder 3 forms a support surface 37 running parallel to the receiving base surface 13 for locking elements 39 adjustably mounted in the tool 4 in the direction perpendicular to the center plane 20 in a guide aperture 38. These are in pairs in the tool 4 arranged in the guide opening 38 and project beyond in a locking position with locking lugs 40 tool side surfaces 41, 42. This locking position is achieved by the action of a arranged between the locking elements 39 compression spring 43. The latching lugs 40 of the locking elements 39 projecting beyond the tool side surfaces 41, 42 are supported, on the one hand, on the support surface 37 of the adjustable restraining means 15 and the counteracting support surface 45 formed on a groove 44 extending in the further leg 19 of the tool receiving device 1 in the direction of the longitudinal extension , which is approximately aligned with the support surface 37.

Thus, the tool 4 is approximately symmetrical to the center plane 20 on the one hand on the support surface 37 of the retaining means 15 and on the other hand supported on the bearing surface 45 of the groove 44 of the tool holder 3 and secured against falling when loosening the clamping device 5.

Like the other Fig. 2 can be seen, a measured in the direction of the length 16 center distance 46 of the arranged in the guides 18 T-nuts 17 is equal to or slightly greater than a width 47 of the retaining means 15, z. As the T-nuts 17, in the region of the locking block 24. The retaining means 15 are thus directly lined up and arranged over the entire length 16. Thus, the retainer 14 at each selected tool length 48 and regardless of the selected position of the tool 4 in the tool holder 3 is effective.

In the Fig. 3 the tool receiving device 1 with the tool 4 is shown in detail in a clamped for the performance of a procedure in the tool holder 3 by means of the clamping device 5 position. As can be seen, has a tool head 50 of the tool 4 at its opposite tool side surfaces 41, 42 clamping grooves 51 for the engagement of the clamping bolt 8 of the clamping device 5. The clamping grooves 51 are arranged symmetrically with respect to the center plane 20, whereby the tool 4 can be clamped by a respective 180 ° turned position in the tool holder 3. As already described above, the tool 4 is clamped by means of the clamping bolt 8 against the receiving base surface 13 and the clamping bolt 8 opposite side surface 10 of the tool holder 3 and thus positioned in its position for a single operation.

Furthermore, it can be seen that when loosening the tensioning device 5, shown by the dashed line drawn retracted position of the clamping bolt 8, the tool 4 by protruding from the tool side surfaces 41, 42 with the locking lugs 40 locking elements 39, the tool 4 from an accidental crash the tool holder 3 by support on the projecting into the region of the tool holder 3 retaining means 15 and on the other hand on the bearing surface 45, which is secured in the further leg 19 groove 44 is secured.

The retaining means 15 is guided by means of the spring tongue 30 of the spring assembly 29 in the T-guide groove 21 linearly guided in the direction of the tool 4 and with the T-guide lug 23 on stop on the arranged in the tool holder 3 Abstreifblech 33, which covers the T-guide groove 21 in the direction of the receptacle 3. The locking block 24 protruding beyond the guide projection 23 by at least the projection 28 thus forms the support surface 37.

The width 25 of the tool holder 3 corresponds to a thickness 52 of the tool 4 and the tool head 50, plus at least once the transition 28, with the resting on the support surface 37 of the locking block 24 and support surface 45 locking lugs 40 of the opposite locking elements 39, the tool side surface 42 tower over. At the same time, this projection 28 corresponds to an intended adjustment path in accordance with arrow 53, by which the locking element 39 can be adjusted against the action of the compression spring 43 in the tool head 56. The latching element 40 projecting into the groove 45 of the opposite side surface 10 projects beyond the opposite tool side surface 41 about the projection 28, whereby the support of the tool 4 with the latching lug 40 on the support surface 45 of the groove 44 is given.

As a result, regardless of the respective state of the clamping device 5 or the position of the clamping bolt 8, the retaining device 14 is effective, with the unintentional falling out of the tool from the tool holder 3, even with dissolved clamping device 5 is prevented.

On the basis of in Fig. 4 1, a removal process to remove the tool 4 from the tool holder 3 of the tool bar 2 will now be described. After retraction of the clamping bolt 8 of the clamping device 5, in which this no longer protrudes into the tool holder 3 or a tool 4 facing surface 54 of the Abstreifbleches 36 no longer surmounted, is for removing the tool 4 horizontally - according to arrow 55 - laterally in Offset by the tool side surface 42 on an end face 56 of the protruding locking block 24 this against the action of the spring tongue 30 - as arrow 57 - is adjusted until the end face 56 is aligned with the surface 54 of the Abstreifbleches 36. In this adjustment - according to arrow 57 - the locking lug 40 is simultaneously pressed by abutment against the Abstreifblech 36 against the action of the compression spring 43 - according to arrow 53 - in the tool head 50. In this position, the tool head 50 is displaced by the projection 38 and while the locking lug 40 of the oppositely disposed locking element 39 is no longer in engagement with the groove 44th

In this position, the tool 4 can be removed from the tool holder 3 - according to arrow 58.

In the Fig. 5 is now a placement process, the tool 14 provided with the securing device 14, shown. The tool 4 is introduced with the clamping head 56 in the insertion slot 26 of the tool bar 2. The tool side surfaces 41, 42 are thereby surmounted by the locking lugs 40 of the locking elements 39. A total width 59 results from the thickness 52 of the tool head 50 and the double protrusion 28, with which the locking lugs 40 project beyond the tool side surfaces 41, 42 by the action of the compression spring 43 arranged between the locking elements 39. Since a slot width 60 between a minimum dimension, corresponding to the thickness 52, and a maximum dimension, corresponding to the thickness 51, plus a projection 28, is variable, it comes when inserting into the tool holder 3 for the time being for investment of angularly formed control surfaces 61, with which the locking lugs 40 are delimited on the upper side, on opposite edges, which are preferably bevelled, the locking block 24 on the one hand and the leg 19 on the other hand, which limit the insertion slot 26 laterally. Upon exertion of pressure in the direction - according to arrow 62 - cause the angularly extending control surfaces 61 an adjustment of the detents 40 against the action of the compression spring 43 - as indicated by arrow 53 - and / or an adjustment of the T-nut 17 against the spring force of the spring tongue 30 - according to arrow 57 - with which the tool 4 can be pressed with the tool head 50 in the receptacle 3. Once this process is completed, take the locking elements 39 by the action of the compression spring 43, the locking position and is also a provision of T-slot nut 17 in the preloaded stop position on Abstreifblech 36. Thus, the retainer 14 in function and the tool 4 is secured again taken against crash in the tool holder 3.

Furthermore, the basis of the Fig. 5 still on a possible formation of a stop and rotation 63 for the tool head 50 in a guide opening 64, such as a bore 65, slidably mounted locking element 39 received. After a preferred Training the locking elements 39 are formed by cylindrical pins 66, the tool side surfaces 41, 42 superior end portions are formed as the locking lugs 40 with the control surfaces 61. In the bore 65, a guide groove 67 is arranged in the direction perpendicular to the median plane 20, in the guide pins 68 of the locking elements 39 protrude and thus secure against rotation. To limit the projection 28, the guide groove 67 in the area of the tool side surfaces 41, 42 is closed by way of example, for which various technical possibilities exist and need not be discussed further.

In the Fig. 6 a further embodiment of the tool receiving device 1 according to the invention is shown, for example, on a head-carrying tool 4, the tool head 50 is supported on the receiving base 13 in the tool holder 3.

Furthermore, in this embodiment a turning possibility of the tool 4 in the tool holder 3 is not provided and therefore, according to this embodiment, one or more adjustable locking elements 39 are provided on only one of the tool side surfaces 41, 42 in the tool head 50. On the opposite tool side surface 42, 41, however, a fixed locking lug or locking bar 69 is provided. The application in such an embodiment provides to use the tool 4 according to the inventive solution in only one position in which the one or more adjustable locking elements 39 associated with the retaining means 15 of the retainer 14 and thus a common adjustment of the locking element 39 and the retaining means 15 is given for the insertion or removal of the tool 4. The locking element 39 is guided in this embodiment, for example in a blind bore 70 and biased by the compression spring 43 and the stop and rotation 63 held in position in which the locking lug 40 projects beyond the tool side surface 41 to the supernatant 28. By means of the latching lug 40 and arranged on the opposite tool side surface 42 and projecting into the groove 44 locking strip 69, the tool 4 is kept secured against falling even when loosening the tensioning device 5. The removal of the tool 4, as well as the insertion is carried out as already in the previously described figures. It is essential that the width 25 of the tool holder 3 at least the thickness 52 of the tool head 50 plus the projection 28 of the locking bar 69 corresponds, wherein preferably the projection 28 of the locking lug 40 and the locking bar 69 will be the same size.

The embodiments show possible embodiments of the tool receiving device 1, wherein it should be noted at this point that the invention is not limited to the specifically illustrated embodiments thereof, but in the context of claim 1, rather, various combinations of the individual embodiments are possible with each other. Within the scope of claim 1, therefore, also all conceivable design variants, which are possible by combinations of individual details of the embodiment variant shown and described, are included in the scope of protection.

For the sake of order, it should finally be pointed out that, for better understanding of the structure of the tool receiving device 1, these or their components have been shown partially unevenly and / or enlarged and / or reduced in size.

The task underlying the independent inventive solutions can be taken from the description.

REFERENCE NUMBERS

1

Tool-holding device

2

tool bar

3

tool holder

4

Tool

5

jig

6

clamping cylinder

7

clamping surface

8th

clamping bolt

9

clamping groove

10

side surface

11

stop surface

12

shoulder

13

Pick-up base

14

Restraint

15

Retention means

16

length

17

T-nut

18

guide

19

leg

20

midplane

21

T-guide

22

double arrow

23

T-leadership approach

24

latch block

25

width

26

insertion

27

side surface

28

Got over

29

spring assembly

30

spring tongue

31

outer surface

32

spring plate

33

face

34

arrow

35

stop surface

36

stripper

37

support surface

38

Management breakthrough

39

locking element

40

locking lug

41

Tool side face

42

Tool side face

43

compression spring

44

groove

45

bearing surface

46

center distance

47

width

48

tool length

49

50

tool head

51

clamping groove

52

thickness

53

arrow

54

surface

55

arrow

56

face

57

arrow

58

arrow

59

overall width

60

slot width

61

control surface

62

arrow

63

Stop and anti-twist device

64

Management breakthrough

65

drilling

66

straight pin

67

guide

68

guide pin

69

locking strip

70

blind hole

Claims (24)

1. Tool holding fixture (1) with a tool beam (2), a clamping mechanism (5) and a groove-shaped tool holder (3) in the tool beam (2) for tools (4), in particular a top tool of a bending press, with at least one lock element (39) which can be displaced in a tool head (50) in a direction perpendicular to a tool side face (41, 42), and with a retaining mechanism (14) for the tools (4), characterised in that disposed in one of the legs (19) of the tool beam (2) bounding either side of the tool holder (3) in the direction of a length (16) are guides (18) disposed at a mid-distance (46) from one another extending in the direction perpendicular to the length (16), in which retaining means (15) for the tools (4) are displaceably mounted.
2. Tool holding fixture as claimed in claim 1, characterised in that the guides (18) are provided in the form of T-shaped guide grooves.
3. Tool holding fixture as claimed in claim 1 or 2, characterised in that the retaining means (15) are provided in the form of T-shaped blocks (17) forming a T-shaped guide shoulder (23), which is provided with a locking block (24) extending across the T-shaped guide shoulder (23) in the direction of the tool holder (3).
4. Tool holding fixture as claimed in claim 1 or 2, characterised in that the mid-distance (46) between the T-shaped guide grooves (21) disposed adjacent to one another corresponds to a width (47) of the T-shaped blocks (17).
5. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that the T-shaped blocks (17) and the locking block (24) form a stop surface (11) for a shoulder (12) of the tool (4) in a plane extending perpendicular to a side face (10) of the tool holder (3).
6. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that the T-shaped blocks (17) are biased in the direction of the tool holder (3) by means of a spring arrangement (29).
7. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that the spring arrangement (29) is provided in the form of a spring plate (32) disposed on a side face (27) of the tool beam (2), which biases the T-shaped blocks against a stop by means of spring blades (30).
8. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that a displacement path of the T-shaped block (17) in the direction of the tool holder (3) is restricted by the stop.
9. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that the stop is provided in the form of a wiper plate (36) disposed in the tool holder (3) extending parallel with the tool side face (41, 42), which forms a stop surface (35) for the T-shaped guide shoulder (23).
10. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that the locking block (24) extends across a surface (54) of the wiper plate (36).
11. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that at least one guide orifice (38) is provided in the tool head, with a flush arrangement of two locking elements (39) extending across opposing tool side faces (41, 42) with catch lugs (40).
12. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that the lock elements (39) are biased into a locking position in which the catch lugs (40) extend across the tool side faces (41, 42) by means of a compression spring (43) disposed between them in the guide orifice (38).
13. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that a slot width (60) of a lead-in slot (26) between the side face (56) of the locking block (24) facing the tool (4) when in a retaining position and a side face (10) of the leg (19) of the tool holder (3) lying opposite the end face (56) approximately corresponds to a thickness (52) of the tool head (50) of the tool (4).
14. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that a groove (44) extending in the direction of the length (16) of the tool beam (2) is disposed in the side face (10) of the tool holder (3) lying opposite the retaining means (15).
15. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that at least one lock element (39) is provided in the tool head (50) extending across the tool side face (41, 42) with the catch lug (40) due to the action of a compression spring (43).
16. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that the tool side face (41) opposite the tool side face (42) across which the catch lug (40) extends is provided with a catch shoulder, preferably a catch ledge (69).
17. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that the lock element (39) is provided in the form of a cylindrical pin (66).
18. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that a stop and anti-rotation lock (63) for the lock element (39) is provided in the guide orifice (38).
19. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that the stop and anti-rotation lock (63) for the lock element (39) is provided in the form of a guide groove (67) disposed in the guide orifice (38, 64) and a guide pin (68) inserted in the lock element (39) and extending into the guide groove (67).
20. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that the catch lug (40) of the lock element (39) facing a holder base surface (13) of the tool holder (3) is provided with a control surface (61) extending at an angle.
21. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that a width (25) of the tool holder (3) corresponds to the thickness (52) of the tool (4) or tool head (50) plus the single projection length (28) of the catch lug (40).
22. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that a depth of the groove (44) is the same as or bigger than the projection length (28) of the catch lug (40).
23. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that the locking block (24) of the retaining means (15) and the groove (44) form a support surface (37) and a bearing surface (45) for the catch lugs in a plane extending perpendicular to a mid-plane (20) extending vertically and symmetrically with respect to the tool head (50).
24. Tool holding fixture as claimed in one or more of the preceding claims, characterised in that a total displacement path of the lock elements (39) corresponds to twice the projection length (28) of the catch lug (40).

Images