EP0963801B1 - Press for making variable workpieces - Google Patents

Abstract

The abutment surface (45) for the catch (42) used to fix the work tool part (11, 24) in the active (working) position is divided into at least two surface regions (45a-45d), as is the counter-abutment surface (36). The press contains a work tool whose upper work tool section (4) is mounted on a movable press tappet and has at least one work tool part mounted on it, this part being switchable between active and passive positions. A locking device (42, 51) used to fix the work in the active (working) position includes a movable catch with abutment surface movable in and out of position along with a counter-abutment surface.

Description

The invention relates to a press, in particular a perforating press for shaping changeable patterns in preferably flat workpieces.

For many machining operations, especially for Punching operations are often requested by a To be able to variably design the punching patterns generated by the press. Especially in the auto industry are occasional Sheet perforations with punched openings desired, the shape of the openings from case to case can switch, so the purchase of a special tool may be non-economical. Moreover There are often cases in which small series or alternating hole patterns are to be produced in individual pieces, which, for example, are to be removed from a template.

If a flat hole pattern is to be punched out, this should be done with the simplest possible tools. On the other hand, the time required for production or machining a workpiece, i.e. for the Punching the hole pattern or other processing of a workpiece in a press must not be too high.

DE 4135787 A1 discloses a punch press with a Known tool, in its upper tool punch are arranged in two rows. The two rows are there straight and transverse to the direction of transport of a sheet to be punched. The one in the Upper tool punch held parallel to each other stand on gap, i.e. the punches of some Row are covered against the punch of the other row to the transport direction of the workpiece, for example offset by half a lateral distance.

The punches are parallel with their longitudinal direction aligned with the working direction of the upper tool and adjustable stored in it. By each one slidably mounted transversely to the punch Locking bolts are the punch in their advanced Lockable active position. The latch will be on the side the punch are released and can when the top tool moves towards the workpiece, Place on the workpiece and from there into the upper tool can be pressed without a punching process takes place.

The latches are connected to fluid cylinders that serve as a drive device. Each bar has one Contact surface on that of a corresponding counter contact surface corresponds to the punch. If the bolt is pushed forward comes the contact surface of the bolt with the Counter contact surface of the punch in contact and the Riegel acts as an abutment. If the bolt is withdrawn, the punch is released.

If more complicated hole patterns are to be punched, the individual bars are switched and thus the Release or the locking of punches in the upper Part of the press stroke, i.e. if the punches except Engagement with the workpiece. With high-speed Pressing is very much the time available here short. As a result, the latches very quickly have to be moved. After the latch naturally certain weight and therefore a not negligible have inert mass, are used to accelerate the bolt correspondingly powerful drives required. This have a build volume that is often not easy on one Tool must be accommodated.

FR 2 407 765 A is a punching device for Generation of variable hole patterns known. There is a Punching tool provided with a stamp group that is held at the top of a common pressure piece. this is a selection slide arranged on a press ram assigned that is movable transversely to the punching direction is stored. There are two rib-like ones on the selection slider Teeth formed, the corresponding groove-like Wells in the pressure piece are assigned. By moving the selection slider sideways the stamp group in question is activated or deactivated become.

In addition, DE-A-27 41 537 is a punching tool known that different punching operations, namely a contour cut and a hole punching process can execute. To perform the contour cut is a stamp vertically movably mounted in the tool provided that cuts out the outer contour of the workpiece. A smaller stamp is axial in this stamp movably mounted for punching holes in the Workpiece serves. Between the master cylinder and The two stamps are arranged with several slides activate and deactivate the individual stamps. one this slide has one with two teeth Contact surface. The assigned stationary piece of equipment has two corresponding recesses. Do they stand Teeth tooth on tooth, the contour stamp is active during only the punch is active when the teeth of the slide with the gaps of the contact piece.

Based on this, it is an object of the invention to Press to create a high stroke rate and a changeover the tool while the press is operating allowed.

This task is solved by a press that the Features of claim 1.

The top tool of the press points several tool parts, e.g. B. punch, other stamps, fingers or other tool parts on the workpiece, for example a sheet metal, at a Make press strokes when they are activated are. The reshaping can consist in that Holes with any one corresponding to the punch Punched out shape, indentations or other Deformations are made. The movably mounted Tool parts are in a working position by a locking member lockable. The locking element can be a locking bolt, a locking cam or the like. His movement is correspondingly a linear movement, a rotary movement or another actuating movement. In any case, can the actuating movement is formed on the locking member Investment or restricted area with a counter abutment area in and transferred out of the plant. Are the two surface in the system, the tool part is locked in the active position. Otherwise it is released. By subdivision the contact surface and the counter contact surface in each case in at least two parts of the surface, the actuating movement of the locking member are significantly shortened, i.e. turn out short-stroke without the area of the Contact area or the counter contact area reduced overall and thus the surface pressure would be increased. The of the total area required for dimensioning is therefore on many sub-areas divided that a sufficiently short Hub is obtained. A short-stroke actuating movement enables then a faster adjustment of the locking member from its locked position to the release position and vice versa. This means that even with very high stroke rates of 250 Up to 500 strokes per minute to adjust the locking elements possible during the range of a press stroke; in to whom the tool is open, i.e. in which the top tool is out of engagement with the workpiece. For example. can they Tool parts in a period of approximately 40 milliseconds be blocked or released. The precise time value depends on the size of the tool parts and the press from, at least by the area subdivision of Contact surface and the counter contact surface an essential Shorten the required locking or release times can be achieved.

In a possible first embodiment, the Contact surface on the locking member, for example a locking bolt or a locking cam formed while the counter abutment surface on the adjustable tool part, i.e. For example, on a punch or on one with the punch connected intermediate piece (pressure member) is trained. The counter surface of the locking bolt or other locking member forms the abutment for the contact surface of the adjustable tool part. The The advantage of this embodiment is that Locking element no movement in the working direction of the Upper tool and in the direction of adjustment of the stamp or other tool part.

Alternatively, it is possible to attach the contact surface to the To provide a locking member, whereas the counter abutment surface on one immovably connected to the upper tool Part or is formed on the upper tool itself. In in this case forms a part or section of the tool part at the same time the locking element. For example. is this through formed a slide, which is facing away from the stamp Side is interrupted by recesses Has contact surface. The one provided on the top tool Counter bearing surface is also through recesses interrupted. The axial movement can be adjusted by lateral adjustment the punch and the associated locking member can now be released or blocked.

In both embodiments, each locking member be provided with its own drive device to to be able to adjust the locking member individually if necessary. Because of the adjustment movement required only in short stroke can use relatively underperforming drives Find. For example. can magnetic drives so small designed to be fully in the top tool or parts of it. This is especially true if the contact surface and the counter contact surface in more than two surface areas are divided.

A further relief of the positioning movement is also possible in that the punch or other tool parts at the time of the potential Switching the blocking elements from their blocking position in their locking position or vice versa in the active position are located, so that the path for the locking member is clear is. The locking member can thus be used on any inclined surfaces or other means are waived that derived the tool part from a movement of the locking member would push into his active position. Thereby motion stroke and drive power are also saved. The transfer of the tool parts to the active position can be caused by spring preloading of the tool parts their active position can be reached.

However, it is also possible to have a separate drive device to provide for the changeover point all moving tool parts to their active position biased and otherwise fails to do so.

Especially when the tool parts are resilient on their Biased active position, it can be advantageous be with them on their end surface facing the workpiece to provide a buffer element. This serves to prevent the punch with its cutting edges or other hard areas touches the workpiece, if he does not deform (punch) the workpiece here should. The buffer element can be a rubber buffer that if the punch in question is active from the punch is easily overcome, whereas it is his Compliancy is such that he is the weight and Inertial forces of the tool part or punch under Preventing workpiece contact can pick up when the relevant tool part is not active.

The concept according to the invention allows neighboring Punches or tool parts very close together to arrange. A big one can be on the upper tool Number of independent drive devices and corresponding Barriers are provided what the Possibility creates punch punches at lateral intervals to be arranged from each other, which correspond to their diameter. This enables continuous rows of holes to be punched become. To keep these punches apart bring about from each other, they can advantageously be arranged in a zigzag row. The punch stamp then interact with pressure members, each about as wide as a punch or if several Pressure elements should serve a larger stamp, are narrower than a punch.

The locking members interacting with the pressure members are related to the direction of adjustment of the punch For example, transversely to the direction of adjustment of the punch slidably mounted. In addition, they are in the Adjustment direction guided at least so that it can not tip sideways on its flat side.

In one preferred because of its variability Embodiment are the locking members and the adjustable Tool part in separable part tools arranged, for example, in cassettes. For example different stamps, i.e. different punch diameters, Stamp forms, stamp numbers changed without the unit with the bolts and the drives switch.

Further details of advantageous embodiments the invention result from the drawing or the associated description, or from subclaims.

Fig. 1 eine erfindungsgemäße Lochstanzpresse in vereinfachter schematisierter und ausschnittsweiser Seitenansicht,

Fig. 2 ein Oberwerkzeug der Presse nach Figur 1, in einer schematisierten Seitenansicht,

Fig. 3 das Oberwerkzeug nach Figur 2, in einer schematisierten und teilweise aufgebrochenen Vorderansicht,

Fig. 4 eine Draufsicht auf das Oberwerkzeug nach Figur 3, geschnitten entlang der Linie IV-IV in Figur 3,

Fig. 5 ein Werkstück mit einer engstmöglichen Lochung, die von dem Werkzeug nach den Figuren 2 und 3 erzeugt worden ist, in einer schematisierten Draufsicht, und

Fig. 6 einen Lochstempel in einer schematisierten, teilweise geschnittenen und ausschnittsweisen Seitenansicht in einem anderen Maßstab.

An exemplary embodiment of the invention is illustrated in the drawing. Show it:

1 is a punch press according to the invention in a simplified schematic and partial side view,

2 shows an upper tool of the press according to FIG. 1, in a schematic side view,

3 shows the upper tool according to FIG. 2, in a schematic and partially broken open front view,

4 shows a plan view of the upper tool according to FIG. 3, cut along the line IV-IV in FIG. 3,

5 shows a workpiece with the narrowest possible perforation, which has been produced by the tool according to FIGS. 2 and 3, in a schematic plan view, and

Fig. 6 shows a punch in a schematic, partially cut and partial side view on a different scale.

Description:

In Figure 1, a press 1 is cut and schematically illustrated. The press is used to punch variable hole patterns in a workpiece 2, the For example, is formed by a sheet that is not one further illustrated transport device in the transport direction T gradually through a tool 3 the Press 1 is moved. The tool 3 has an upper tool 4 and a lower tool 5. While the lower tool 5 is fixedly mounted on a press table 6, is the upper tool 4 on a not illustrated Press ram held by a drive device an indicated by an arrow 7 back and forth experienced working movement. As indicated by arrow 7 indicated, the working direction (arrow 7) of the Press ram and the upper tool 4 essentially perpendicular to the transport direction T of the workpiece 2.

The upper tool 4 has two rows of punches 11, 11 'with which the desired hole pattern in the Workpiece 2 can be punched. Because of the construction of the upper tool 4, reference is made to FIG. 2. The top tool 4 is vertical and transverse to the direction of transport T directed plane E is formed symmetrically. The following description of the left-hand side in FIG Area or section of the upper tool 4 therefore applies accordingly to the right-hand section. Its parts are only for distinction with otherwise the same reference numerals as the left part the upper tool 4 provided.

The stamp 11 is in a stamp holder plate 14 displaceable with little play with respect to its axial direction 15 stored. The stamp holder plate 14 is in corresponding Sidewalls 16, 16 'of the upper tool 4 held. For this purpose, these have an approximately U-shaped cross section Recording groove 17, 17 'on, which is transverse to the direction of transport T and horizontally across the entire width of the extends each cheek. The stamp holder plate 14 has corresponding ribs 18, 18 ', which in the grooves 17, 17 'grab and store the stamp holder plate 14.

Each stamp 11 in a corresponding receiving hole the stamp holder plate 14 sits, instructs a head at its upper end facing away from the workpiece 2 21, whose diameter is slightly larger than that remaining punch 11. The head 21 forms with a corresponding ring shoulder 22 of the receiving bore Slings. Is the head 21 on the ring shoulder 22 on, the punch 11 has its most advanced Position reached. This is his working or Active position.

With the punch 11, which is circular in cross section is an adapter or pressure member 24 in the system vertically displaceable in the direction of the longitudinal axis 15 is led. The intermediate piece 24 has, as in FIG. 4 shows a rectangular cross-section in plan view on, its narrow sides (vertical) with guide rails 25, 26 are provided. This engages in corresponding Guide grooves 27, 28 in the cheek 16 and formed opposite in a guide part 29 are. The individual intermediate pieces 24 of each punch 11 are identical to one another and, for example, by Get cut to length from a suitable profile material. They are in the guide grooves 27, 28 with little play led and have a distance of a few from each other tenths of a millimeter. With her essentially plan bottom 31 are the pressure members 24 with the end faces of the heads 21 of the punch 11 in the middle of the plant. The punch 11 is on an approximately straight one or, as can be seen from FIG. 4, zigzag-shaped row 32 arranged. The diameter the heads 21 of the punch 11 correspond approximately to that Thickness of pressure members 24.

As can be seen from Figure 2, the pressure members 24 by spring means, such as two helical springs 34, 35 biased towards the punch 11. Press with it the coil springs 34, 35 the pressure members 24 after below that the punch 11 is resilient to its working position are biased towards.

On their facing away from the respective punch 11 Side are the pressure members 24 with a counter abutment surface 36 provided by several in the present example is interrupted by three transverse recesses 37. The counter abutment surface 36 is thus by four surface areas 36a, 36b, 36c, 36d are formed, each essentially are plan and on a common level lie. The gaps between the surface areas 36a, 36b, 36c, 36d are each transverse to the longitudinal direction 15 measured about the same size as the surface areas or slightly larger than this. The depth of the gaps or recesses is at least as large as the stroke of the Punch 11 between its active position and its Passive position in which he stands, if that Upper tool 4 has reached its bottom dead center position and it does not deform the workpiece. Thus the contact surface areas 36a to 36d correspondingly at end faces Fingers trained. Are between your fingers Gaps formed that are at least as big as fingers.

A locking member 41 is assigned to the pressure member 24, which is essentially cuboid. On its top, that of the punch 11 and the Pressure member 24 rests, it lies flat on a corresponding one Sliding surface 42 of the upper tool 4. It is therefore immovable in the direction of 15. It also works with lateral ribs 43, 44 in the vertical grooves 27, 28 one and is so far led that it does not come from the disengage from the longitudinal axis 15 predetermined axis direction can. The locking member 42 is on its underside a triple interrupted contact surface 45. Between the partial surfaces 45a to 45d thus formed Contact surface 45 spaces are formed so that the contact surface areas 45a to 45d on the front Ends of corresponding fingers as flat surfaces or slightly spherical or curved surfaces are formed. The distances between the surface areas 45a to 45d are in turn dimensioned such that the end faces 36a to 36d fingers of the pressure member 24 in the gaps Drive in between the contact surface areas 45a to 45d can. The depth is the adjustment path of the punch 11 sized accordingly.

The side ribs 43, 44 and the width of the Locking member 42 are dimensioned so that this in one Figure 2 by an arrow 47 adjustment direction can be pushed back and forth at least by a width are that of the extent measured in this direction each area corresponds to 45a to 45d. The surface areas To this extent, 45a to 45d are among themselves chosen the same size.

To move the locking members 42 in the direction to cause the arrow 47, each locking member 42 is in each case connected to a drive device 51. To this belongs to one in the present embodiment Magnetic coil 52, which is arranged in a fixed manner in the side cheek 16 is. The magnet coil 52 is axially displaceable an anchor 53 connected to the locking member 42, which is drawn into the coil 42 when it is excited becomes. If the armature is polarized accordingly, it can be reverse excitation can be pushed out of the coil. Alternatively, a spring means such as a Tension spring or a spring tongue can be provided between the upper tool 4 and the locking member 42 acts. If necessary, a fluid drive can also be used.

To guide the locking member 42 in the direction of To ensure arrow 47, this is preferably with a bore 54 aligned with the armature 53, in which the armature 53 engages on the magnetic coil 52 side. A guide pin 56 can be arranged on the opposite side be that slides in a bore of the guide member 29 or sits in this and can slide in the bore 54.

As can be seen in particular from FIG. 3, the Solenoid coils 52a, 52b, 52c and thus the entire drive devices 51a, 51b, 51c two, preferably triple offset in height on the side cheek 16 arranged, making them accordingly in the middle, at the upper part or the lower part of the locking member 42 attack. This enables the outer diameter of the individual drive devices 51a to 51c, which up to is three times the corresponding thickness of the Locking members 42. If there is a further lack of space, Drive devices not only triple, but also be staggered four or more times. It will possible that existing on the side of the locking members 42 Exploit volume so that the drive devices 51st can be completely accommodated in the upper tool 4. As a result, a sheet metal holder can be guided past the upper tool 4 become.

The punch 11, 11 'of the two rows 32, 32' are transverse to the direction of transport T against each other offset half a punch distance. With that leaves as will be seen later, not only a variable hole pattern, but if necessary also a achieve a continuous cut on the workpiece 2.

In Figure 6, a single punch 11 is cut out illustrated. The punch 11 is a essentially cylindrical or otherwise in cross section trained rod with its head 21 in the Stamp holder plate 14 is mounted. At its bottom The punch has a free end essentially aligned orthogonally to its longitudinal central axis 15 End surface 61, which is surrounded by a cutting edge 62 is. The end surface 61 is approximately in the middle of a blind bore 63 interrupted, in which a rubber buffer 64 sits. This is made of a wear and abrasion resistant elastic Material formed from the blind bore 63rd preferably protrudes in a curvature. The elasticity and the size of the rubber buffer 64 are such that the cutting edge 62 of the punch 11 the workpiece 2 not touched when the punch 11 is not in his Working position is locked. However, it is in this locked, the rubber buffer 64 can by the force of Punch 11 can be easily overcome, so that Cutting edge 62 penetrates the workpiece 2 unhindered.

The press 1 described so far works like follows:

For the description, it is initially assumed that that all locking members 42 (42 ') are illustrated in the one shown in FIG Position. The press runs well, the upper tool 4 leads one in the direction of the arrow 7 reciprocating swinging motion, the Punches 11, 11 'with each downward stroke of the upper tool 4 penetrate the sheet 2 and a corresponding one Punch out the row of holes. During each upward stroke of the Upper tool 4, the sheet to a desired Distance further conveyed so that in the next downward stroke a new row of holes is created.

If one or more punches 11, 11 'of the Upper tool 4 inactive for a next press stroke can be switched without braking the press respectively. It is only used during the upward stroke of the Press as soon as the punch 11, 11 'out of engagement with the workpiece, the corresponding drive devices 51, 51 'the punch 11, 11' driven, which are to be switched passive or inactive. As a result, the corresponding magnet armatures 53, 53 'in the solenoids 52, 52 'are drawn in, and the locking members 42, 42 'are in the direction of arrow 47, 47' postponed. The displacement path corresponds to that in Direction of arrow 47, 47 'measured width of the counter abutment surface areas 45a to 45d (45a 'to 45d'). In order to the counter abutment surfaces arrive at their end faces 45a to 45d fingers of the locking member 42 which mirror-symmetrical to corresponding fingers of the pressure member 24 are formed in front of the gaps 37 of the pressure member 24. The punch 11 in question is now released.

The rubber buffers set on the next downward stroke of the press 64 on the workpiece 2 and presses the punch 11 with little force upwards. The one from that Rubber buffer 64 is applied elastic force, however larger than that for braking the pressure member 24 and the Hole punch 11 needed to overcome the inertia Force plus that of the coil springs 34, 35 exerted force. So neither the cutting edge gets 62 another section or part of the punch 11 in engagement with the workpiece 2. The punch 11 presses near the bottom dead center of the upper tool 4 the pressure member 24 briefly upwards, so that his fingers in the interstices of the locking member 42 drive. As soon as the upper tool 4 is up again moved, the coil springs 34, 35 relax again and the pressure member 24 sets with its lower flat surface on the punch holder plate 14. The head 21 of the relevant punch 24 is now on the ring shoulder 22 on and is thus taken up again. The same applies to the active punch 11, 11 ' by placing the head 21 on the annular shoulder 22 the holes they punched are pulled out.

Should inactive punch 11, 11 'be active again are switched, the corresponding drive devices 51 controlled the other way round or if spring means are available, only released. The coil springs 34, 35 also hold the pressure member 24 during the braking phase of the upper tool 4 in the direction of its top dead center towards its bottom position, so that the way for the locking member 42 is free and the Brought contact surface 45 over the counter-contact surface 37 can be without the fingers of the pressure member and the Locking member stick together.

With the present press 1 and the associated one Tool 3 creates new hole patterns with every press stroke generate, making overall relatively complicated and almost any hole pattern within the hole punch have the specified grid generated. Next any hole patterns can be because of the overlap the punch in the transport direction T and at the corresponding Control of a feed with half steps also produce larger through openings, whose outer boundary is programmable. The programming can, for example, by reading a template using a scanner and a corresponding control unit.

For a press 1 with adjustable tool parts 11, for example, punching is preferably each tool part 11 each assigned a locking member 42, the Locking member 42 has a locking and a release position. A contact surface 45 is provided on the locking member 42, which are divided into surface areas 45a to 45d is. Are between the surface areas 45a to 45d Recesses formed. The essentially flat and if necessary, slightly beveled contact surfaces at their edges 45a to 45d thus form the end faces of one Toothing. A complementary toothing is on that Tool part 11 or one in connection with this standing pressure member 24 formed. The required Stroke of the locking element when it is transferred from Sperrin Release position and vice versa can thus on the Teeth width can be limited. This in turn enables it, particularly narrow locking members or locking bolts 42 too create the, although they are narrow in the longitudinal direction The contact surface can be adjusted with a short adjustment stroke and thus with a light, small adjustment drive get along. This in turn enables a special one fast adjustment and large press stroke rates with Adjustment with every stroke.

Claims (16)

1. Press (1), in particular a perforating press for punching or forming variable patterns in planar workpieces (2),
   having a tool (3), the top tool (4) of which is held on a press ram, which is driven in working direction (7) by a press drive for performing a working movement,
   having a plurality of tool parts (11, 24, 11', 24') which are provided on the top tool (4) and which can each be changed over between an active state and a passive state, in which case they are each arrested in a moving direction in their active state, and
   having arresting devices (42, 51) which are individually assigned to the tool parts and with which the tool parts (11, 24) can each be arrested in a working position and which each have a movable locking member (42) and a drive device (51) which is individually assigned to the latter and can be activated at random, the said locking member (42)
   having a bearing surface (45) which can be shifted to bring it into contact with and disengage it from an opposing bearing surface (36),
   characterized in that the bearing surface (45) of each locking member (42) is in each case subdivided into at least two surface regions (45a, 45b), and in that the respective opposing bearing surface (36) is likewise subdivided into at least two surface regions (36a, 36b).
2. Press according to Claim 1, characterized in that the locking member (42) is movable transversely (47) to the adjusting direction of the tool part (11, 24).
3. Press according to Claim 1, characterized in that the bearing surface (45) and the opposing bearing surface (36) are subdivided in a direction (47) which is oriented transversely to the adjusting direction (15) of the tool part (11, 24).
4. Press according to Claim 1, characterized in that belonging to the tool part (11, 24) is a punch (11) whose longitudinal direction (15) coincides with the adjusting direction.
5. Press according to Claim 1, characterized in that belonging to the tool part (11, 24) is a pressure member (24) on which the opposing bearing surface (36) is formed, which can be shifted to bring it into contact with the bearing surface (45) of the locking member (42).
6. Press according to Claim 1 or 5, characterized in that the opposing bearing surface (36) is formed on the tool part (11, 24), in particular the pressure member (24).
7. Press according to Claim 1, characterized in that the opposing bearing surface (36) is designed to be in a fixed position with regard to the adjustable tool part (11, 24).
8. Press according to Claim 1, characterized in that the tool part (11, 24) is spring-preloaded towards its position which it assumes in its active state.
9. Press according to Claim 1, characterized in that the tool part (11, 24) has a cushion element (64) on its end surface facing the workpiece (2).
10. Press according to Claim 1, characterized in that the cushion element (64) is a rubber cushion.
11. Press according to Claim 1, characterized in that the tool parts (11) are arranged in a row (32), for example in a straight row or in a zigzag row.
12. Press according to Claim 1, characterized in that the row (32) is oriented essentially transversely with regard to a direction of movement (T) of the workpiece.
13. Press according to Claim 11, characterized in that each locking member (42) is connected in each case to a drive device (51), and in that the drive devices (51a, 51b, 51c) of adjacent locking members (42) are arranged offset from one another, preferably with regard to the adjusting direction of the tool parts (11).
14. Press according to Claim 1, characterized in that the locking members (42) and the adjustable tool parts (11, 24) are arranged in sectional tools (14, 16, 29) which can be separated from one another.
15. Press according to Claim 1, characterized in that the locking members (42) are guided in the adjusting direction (15), i.e. transversely to their own direction of movement (47).
16. Press according to Claim 1, characterized in that the adjusting direction of the tool parts (11, 24) coincides with the working direction (7) of the top tool (4).

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