DE2248392A1 - DEVICE FOR FINE PUNCHING WORKPIECES - Google Patents

Description

DR. MÜLLER-BORE DIPL-PHYS. DP. ήΛΑΝΙΤΖ ΠΙΡΙ.-CHEM. DH. DEUFEL

DlPL-ING. FiNSTERWALD DIPL.-ING. GRÄMKOW

PATENT LAWYERS

GN / Kä - G. 2280

-3. OCT. «72

The Gem / Uity Engineering Comp. Dayton, Ohio, U.S.A.

■ Device · for fine punching of Y / pieces

The invention relates to improvements in an apparatus and a method for punching Y / Erk- " pieces and in particular facilities that carry out the necessary set-up and maintenance and the Make it easier to switch between them.

Punching work pieces is a very desirable method of making parts for many articles. It reduces handling and machining, and creates better looking parts. It can be applied only to a limited v / ground, however, especially in the western ^l chen world. This affects several factors, including the following:

1. During the fine blanking parts with relatively soft '' Cutting edges produced - in contrast to the

Dr. Müller-Bora Dr. Manitz Dr. Deufel Dipl.-Ing. Finsterwald Dipl.-Ing. Grämkow Braunschweig, Am Bürgerpark 8 8 Munich 22, Robert-Koch-Strasse 1'7 Stuttgart-Bad Cannstatt, Marktstrasse Telephone (0531) 73887 _Te | _{eton (0811)} J _{936451 Τθ} , _{ΘΧ 5} _22 _{050 mbpat} Telephone (0711) 567261 Bank: Central Cash Office Bayer. Volksbanken, Munich, account no. 9822 Post check: Munich 95495

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broken jagged canteri when applied of conventional stamping equipments and processes - are the required equipments and setting up for it is very expensive and it is highly specialized and limited in use.

2. The equipment normally used for tool set-up requires considerable equipment Time, effort and cost. Pure fine blanking In addition, the cutting and shaping tools have to be sharpened very often and each one required for this Time has so far taken at least as much time as the original arrangement of the Tools was needed. The fact is that tool maintenance for fine blanking is the two-way Requires three times the time required for conventional punching operations.

3. So far, there have been no facilities for standardizing and simplifying that required for fine blanking Setting up suggested.

4. An additional loss and cost factor with conventional fine blanking is the necessity the critical distances for the tool and the setting of the closest printing position created while using any and all tools. This includes several full printing cycles with closed high settings until the exact penetration of all tools used is reached.

The invention is directed to eliminating the above-identified problems associated with the use of conventional

nellen fine blanking devices and processes exist.

The invention doesn't just make the adoption more general and the use of fine punching of workpieces is feasible, but makes this very desirable for many applications. She creates a tool or Geseiikr sentence and a method of affixing the same - which available fine blanking machines for workpieces like them Osterwalder or Hydrel fine blanking presses. represent essential Gives versatility. The use of the same also enables a significant reduction in Costs for arranging tools and changing them Fine blanking processes. . \ "" -.- ■:

A preferred embodiment of the invention includes one unique arrangement facility for the included Tool components that see through-powered, tapered, securing wrapping rings. Such rings can be quickly and easily applied to their control components and easily replaced to meet the need for a special installation. Preferred versions are characterized by a highly useful precision guide device for the materials to be processed.

Using the simple yet effective apparatus of the present invention, savings of more than 40 % of the cost of setting up for fine blanking can be made. will. In addition, a cost reduction in the production process can be in a range of 10 to 50 % depending on the production volume.

Attention is drawn to the fact that the device and. the method according to the invention in particular for the sliding Punch type of tooling is applicable,

The aim of the invention is to improve the furnishing

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to provide for the fine blanking _f to this economic for the manufacturing, more efficient and more satisfactory in use and for a wide application But Eich, without the likelihood of mistakes, customizable.

Another object of the invention is to provide a tool kit for fine blanking that extends through a Fast and precise setting device for the components, tools used and materials to be processed excels.

Another object of the invention is to provide improvements with the tool sets and their application in presses that are used for fine blanking and that Facilitate arranging the punching and / or tooling assemblies as a unit.

An additional object of the invention is to provide improvements in the arrangement device for punching and tool units applicable to fine blanking to facilitate their easy installation and replacement.

The invention provides a device with a versatile tool or die set, which as Eigenart a fast-functioning sheathing ring and has the ability to quickly arrange tool or die components with extreme accuracy and precision and especially is advantageous for fine blanking of workpieces

The invention is described below on the basis of Drawing described by way of example; in this shows:

Fig. 1 is a partial section showing the application of Tool or die caps and their attachments

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arrangement according to the invention in. an Eresse used for fine blanking represents} \

Fig. 2 is a section showing the ketrieialiGhe assignment the ferkzeug- or (xeaenk sentences like » Fig. 1 shows; . '- ■ "■

Fig. 3 is a section showing details of the tool or die locating and clamping device and shows a material guide device according to the invention;

Fig. 4 is a plan view of a wrapping ring according to. the invention} " '

Fig. 5 shows a section through the enveloping ring according to Fig. 4;

Figure 6 is a section along line 6-6 in Figure 3;

Figure 7 is a section along line 7-7 in Figure 3;

Figure 8 is a section along line 8-8 in Figure 7;

Figure 9 is a section along line 9-9 in Figure 8;

Fig. 10 a section along the line 10-10 in Fig. and

11 is a partial view of the structure according to the invention.

In the figures, the same parts are given the same reference numbers marked. ■

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With reference to the illustrated but non-limiting embodiments in the drawing, Pig. 2 shows a section through a typical tool or die set according to the invention. The upper and lower halves of this set are respectively attached to a tool holder 10 and to a punch holder 12, the latter of which in turn is attached to the backplate surface provided by the upper and lower bedfiebselemente of a press used in fine blanking operations.

The lower half 14 of the stamp shown and 'the Tool assembly includes a grooving insert 16. Bio shank 17 of a stamp 18 is mounted such that it can move back and forth in a central opening in the plate 16. As shown the operating end 20 of the punch is the uppermost, which is through an upper material receiving surface 22 of the cutting insert 16 can protrude. At its end remote from the plate surface 22, the punch 18 has a widened one Part of the body, the head 24 of which has a shell-like recess 26 for an itefiffiSäVplatte 28. A saber record 32, shown at the very bottom, is secured to the head 24 by means of screws 30. This fork plate is useful set up to establish a connection to the ejection component contained in the fine blanking press, in which the tool kit can be used.

In the illustrated case, the ejector body comprises a vertically orientating through channel 34 which at one end opens to the recess 26 and at its other end from the grooving tip surface 22. Channel 34 takes one Ejector pin 36, one end of which, under the influence

From st ο ß '/ by gravity sits on the upper edge of the Ataaftialagplatte and the other or upper end can be operated under the influence of the -typlatte to provide a delayed ejection function.

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Dowel pins 38, which have a locating function, are by means of a press fit in bores in the grooving insert 16 fitted and protrude from these downwards.

Particular attention is paid to the conical, tapered circumferential surface 40 of the standing plate 16 made aware. As shown, The surface 40 converges in an upward direction. Of the The purpose of this will soon become apparent. The upper Half 42 of the tool kit includes a tool plate. 44 »whose outer circumferential surface 46 is equal to the" surface 40 is tapered, but in the opposite sense. In addition, the plate 44 also has bores which protrude Take up dowel pins 38. In this case, however, the Pins from and perpendicular to the surface 44, remote from the web plate 16.

The tool plate 44 is provided with a central opening "48 (FIG. 2) which, when arranged, is directly aligned with the central opening and the punch in the standing plate. A separating element 50 rests in and on the wall which delimits the opening 48 The head or upper end of the divider is expanded and arranged for movement within the confines of an extended upper and lower end portion 52 of the opening. The extension of the upper end of the opening creates a shoulder 54 which makes the downward movement of the divider in an obvious manner The amount of separator movement so provided is just sufficient to pick up some of the material and provide for its ejection from the die plate , which coincides with the back plate 60. These plates 58 and 60 are together by Allen head screws 62 on the toolp Latte 44 secured and arranged in relation to the tool plate by the use of dowel pins 64, the

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are fitted into aligned openings of the same.

The separator 50 is supported by an actuating pin 66, which extends the retainer plate 58 and the back plate 60 in bearing relationship.

In this case only for demonstration purposes in the example according to Pig. 2 the separator 50 with an oil seal a brake pin 68 and with another punch 70 extending therethrough in bearing relationship, wherein the head of the latter lies in the retaining plate 58 and is covered by the back plate 60.

As is evident from Fig. 2, in which a. Part 72 is shown in the process of forming from a plate material, the main punch 18 is used to determine the contours of the part while the secondary punch such as 70 is operated to obtain the desired cutouts in the part. Of course, the number and properties of the stamps can be varied to suit particular applications correspond to. "

FIG. 3 shows details of the holding and arranging device for the relevant halves of the one shown in FIG Tool or die set. The lower of these, the punch holder 12, comprises a relatively thick generally rectangular one Base plate 76, which is suitably provided with openings for screwing and / or tensioning to the Stamp part of a fine blanking press is suitable. The plate 76 has a central opening 78, which is at its top Surface 80 is substantially enlarged by a counterbore to form a circular recess inwardly thereof, formed by a relatively wide annular shoulder 82 is determined. The wall surface 84 which borders this opening is shaped such that it is conical from the

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Shoulder 8-2 expanded to the plate surface 80. The end the opening 78, which is open from the lowermost flat 86 of the plate 76, is of slight diameter expanded by G-egenbohrung in order to insert a thin sleeve-like bushing 88 therein, the inner diameter of which is slightly smaller than that of the immediately adjacent part of the recess 78.

As can be seen from Fig. 1, the socket 88 has and forms a bearing surface for the periphery of the head end of the Stamp 18 and its reciprocating element, not shown. The latter of these, provided in Connection with the punch of the associated press (not shown), is with the punch via the intermediate element ' the fork plate 32 is connected in a suitable manner known to a person skilled in the art. Details of such a connection are not required to understand the invention and therefore not shown or further explained.

As can be seen from Fig. 3, the socket 88 is provided with a Slit provided in its lower edge through which a wedge 90 is pushed which is in a matching recess is anchored in the punch head 24 to locate the punch assembly radially.

A series of cylindrically shaped recesses 92 are in the bottom surface 86 of the plate 76 on a concentric circle with the central opening 78 thereof. The top or round surface 94 of each cylindrical recess 92 has a central one. Opening which forms one end of a coaxial passage 96, the the other end of the shoulder 82 is open. At their lowermost open ends, the recesses 92 are annular plate-like inserts 97 covered, which sit in a receiving recess in the plate surface 86,

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- .10

A piston unit 98 is housed in each cylindrical recess 92. This unit comprises a piston rod 100, which carries an extended plate-like head 102 at one end, the circumference of which is recessed circumferentially to receive the inner peripheral portion of a protruding resilient ring seal 104. As from Fig. 3 can be seen, the periphery of the head 102 and the circumferentially protruding seal 104 for movement against the circumferential recess wall. The seal 104 ge, ensures a division of the recess in which the piston is received into two chambers, one of which between the piston head and the cover plate 98 and the other between the piston head and the base surface 94 the recess in question. The piston rod is shown protruding upwardly through passage 96 and rests against the wall thereof and extends outwardly over shoulder 82. The extension of the rod 100, shown in the uppermost part of Fig. 3, is reduced in diameter at the part immediately upward the Shoulder 82 protrudes and thereby shaped so that a neck part 106, the uppermost protruding end of which terminates in a relatively elongated disc-shaped button 107. As will be further described, the upwardly and outwardly protruding ends of the rods 100 serve as mutually Means for quickly releasing an envelope-like locking ring 108.

As can be seen in FIGS. 4 and 5 , the ring 108 has a circular ring-like shape. Both its outer circumferential surface and its inner circumferential surface 112 are designed as segments of a conical surface. The shape of the surfaces 110 and 112 is such that they converge upwardly and smoothly from a narrow base 114 of the ring 108 to the opposite surface 116 which is relatively expanded in the radial sense. It should be noted that the area

.110 is formed at the same angle as the surface ' 84 and the surface 112 is formed at an angle complementary to the lancing surface. In ring 108 is on one uniform radius a series of archers 118 attached at circular intervals provided by "the surfaces 114 and 116 from open and perpendicular to these are. At the upper ends of the same, which are open from the surface, the slots have uniform in the radial sense Broad. However-in a level immediately below of surface 116, the major extension of length is "each The width of the slot is reduced by an inwardly protruding wall segment that forms a U-shaped shoulder 120, which is recessed immediately below the surface 116 ^. In this way, the slots 118 are formed such that their main extent has a width which in this case to Receiving the neck portion 106 of a piston rod 100 is intended, while one end 122 of the same is sufficiently open, around the part of the disk-shaped bolster that protrudes as a result 107 at the upper end of the rod used.

As can be easily seen, the slots 118 create one Means by which the shroud 118 can be easily attached, removed and replaced. The ring can be arranged to bring the slot portions 122 into respective alignment with the heads 107 of the rods TOO. With this arrangement and lowering of the ring over the buttons 107 the ring can freely on the outer circumference the shoulder 82 are placed. By turning the ring slightly and quickly this can then be releasably locked. The neck portions 106 of the rods move into the narrowed parts of the Slots 118 and heads 107 wedge onto the associated one Shoulders 120. In the illustrated embodiment, the uppermost surface 116 on the ring is of a suitable one annular plate 124 of the same shape covered. Like

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and with the construction described, the hanging 108 quickly for limited movement with piston units 98 to and from shoulder 82 and the surrounding wall surface 84 can be connected.

As shown schematically in Fig. 3, hydraulic Lines 126 in a suitable manner. To each side of the piston head 102 out, which are included in a hydraulic control system and form part of the same, whereby at Actuation of a suitable conventional control fluid and from the chambers to each side of the heads in unison with the requirements for selective advancement and retraction, the piston can be moved, namely in a seemingly obvious way and too obvious appearing purpose. With regard to the hydraulic control system, the details thereof will be available to those skilled in the art known and therefore do not require any further explanation.

Fig. 3 shows that the tool holding unit 10 in the form and Structure is almost identical to the punch holding unit 12, which similarly contains piston units 98 ', which with the Units 98 are identical and how they operate, although they are arranged in reverse order with respect to the units 98 in the punch holder 12. As shown, the tool holding unit comprises 10 a relatively thick generally rectangular plate 130, necessarily the same as the plate 76, with the exception of the shape of certain excerpts present in this. In the further description of the tool plate 130 and its associated parts are included in the die holding unit and its associated elements with the same Identical parts and identical reference numerals are used, but with an additional prime symbol.

The plate 130 hat has a central opening 132 · 1ι "Enae whose shown in Fig. 3 lower end extended by Greg bore

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is to the inward of the base plate surface 134 a recess to produce the-determined by a shoulder 82 'and by a peripheral vVand 84 'is bordered, which like the / tfandflache 84 converges, but in the opposite sense. The convergence in this case is up to the base. 82 'directed. The opening 132 over shoulder 82 'is in hers. Offset in diameter to provide their smallest diameter at the top, creating a further shoulder 136 at a distance from the shoulder 82 '. In the event that the piston units 98 'receiving' cylindrical Plate 130 containing recesses 92 'inward of the uppermost surface 138 is provided, the open ends of the openings are expediently covered by an annular plate 97 ', as described with reference to the punch holder.

Looking at Figs. 6 and 7 of the drawing can be seen be that the plate 130 are provided with four openings 140 'arranged at right angles, which have relatively larger openings 140 in the plate 76 are aligned. Take the latter . the length of the same and sleeve-like protruding outward therefrom Sockets 144 on. Guide rods 146 protrude into the sockets 144, the uppermost ends of which are press-fit or otherwise suitable fastening in the openings I4O 'in the plate 130 are attached. As can be seen in FIG. 3, there are storage facilities 150 between the sleeve 144 and the parts

of the guide rods that move therein. Facilities are therefore provided in order to bring the relative and corresponding movements of the punch holder and the tool holder into a Y / exchange relationship. From Fig. 3 is also it is apparent that the protruding ends of the piston rods 100 'are arranged to form a locking ring 108 'in the manner described for ring 108 and to be releasably attached, the rings being identical in shape.

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From the Pig. 1, 2 and 3 it becomes obvious that if the ring 1G8 ^{1 is} missing, the upper half of the figure shown in fig. 2 tool sets 3 shown can be used as a unit in the tool holder. The tooling plate will sit on the inner peripheral portion of shoulder 82 '; the retaining plate 58 and the back plate 60 snap into the opening 132 in order to allow the latter to abut against the shoulder 136. When the ring 108 'is applied to the protruding ends of the piston rods 100 and as the rods are pulled back, the ring 108 is pulled inward towards the shoulder 82 and the wall surface 84' to adjust the position of the tool plate, the retainer plate and the Back plate to contain and fix parts contained in a clearly recognizable way. The engaging property of the surfaces 110 'and 84' ensure a smooth seating of the ring 108 ', while the inclined surface 112' of the complementary, oppositely directed circumferential surface 46 of the applied tool plate is butted and raised in order to ensure a centered and precise fit of the same.

Of course, the respective plates 130 and 76 are by the intermediary of the indicated slots and openings suitably attached to the opposite plate parts in the fine blanking press where they be applied in a conventional and obvious manner.

Therefore, through the construction described is a simple and quick arrangement of the tool set on the punch and given to the vehicle holder units. In addition, the operating equipment contained in a fine blanking press can be adjusted quickly, so that during operation of the punch and the tooling unit used here is sharp, clean and the parts are precisely forming. The representation in Fig. is only an example and should not be regarded as limiting

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ten. The stamps used depend on the requirements the respective situation.

It is important that the construction of the punch and the tool unit as they are provided here and the Means for clamping the same is simplified so that the both tool requirements for fine blanking essential as well as the time to remove and replace the relevant halves of the tool set and the tools used is significantly reduced, regardless on the purpose for which this is required. It should be clear that using the invention the Halves of the tool set can be assembled as units and simply inserted into their holding plates, whereupon the tensioning locking rings 108 and 108 'are slidably fitted, rotated, and with a simple hydraulic one Actuation of the piston units 98 and 98 'one

he
fixed, and precise backup is followed and the relevant tool elements of the same are precisely arranged. The invention enables the inclusion of any number of dimensions of tool or grooving inserts; the locking rings are dimensioned accordingly on their inner periphery. In addition, when using a clamping device with ring or other shape as described, the tool and grooving plate can be standardized, all that is required is that it be set up to accommodate a number of tools at different locations, so that it is possible to use the same plate to use for various functions. A number of interchangeable units can also be made available there, which can be interchanged using the same locking ring. In any case, the whole thing creates a great deal. versatile system for creating widespread and economical use of fine blanking processes to make workpieces.

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The invention has so far provided a unique method for daa fine Platepunches than ¹ of a mother die set facilitates the use, with only necessarily standardized interchangeable components are required to produce a certain part. Coupled with the unique principle of using easy-to-operate tapered locking shrouds to clamp and locate the tool components, this enables the extreme set-up accuracy required for puncturing workpieces. As already mentioned, the surprising, but very supportive effect is that the application of the invention in fine blanking results in a reduction of about $ 40 in the normally expected set-up costs. In terms of production costs, the savings made possible by the invention will vary in proportion to the size of the parts created, with the greatest benefit occurring as a result of the drastically reduced set-up time provided by the invention in conjunction with low volume. Those skilled in the art will easily grasp this fact. This is of extreme importance in view of the substantial occurrence of low volume series for highly complex mechanisms. The quick change possibilities according to the invention can be easily understood in that normally less than five minutes are required for set-up. The profitability achieved in this way can reduce the production costs of small quantities by up to 50 % . Where there is high volume production, the reduction in production costs is even more remarkable because fine blanking requires tool maintenance that is two to three times the rate of conventional stamping, with each sharpening requiring a new set-up. In order to achieve more quick-action height adjustments, the invention enables a standard ^ tool height within the tool

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the press nods. This enables a Press setting in a closed press division, what the complete tool penetration during the first Stamping cycle guaranteed.

Having described the primary aspect of the invention, improvements made by Direct addition and inclusion of a simple but precise guide device in the tool holder for the material to be processed were created.

A guide device for the material to be processed in the tool kit according to the invention are in accordance with the invention firmly attached to the material input side and the material output side of the tool plate 130, the forms part of the tool holder 10. In this regard, will to Figs. 3, 7 and 8 of the drawing. How As can be seen there, material guide units are arranged on the opposing plates 130 which are identical are, including an elongated, iafvesentliehen right-angled Body 150 of a length corresponding to the length of the side edge of the panel to which it is attached. Of the Body 150 includes parallel end surfaces 152 and 154, perpendicular to a flat bottom surface 156. Another right angled Body 162, which in the sense of the length of .Körpers 150 relative is narrow, is butted against surface 152 of the body and forms one. Continuation of the same. It's closed Note that in Fig. 8, the body 162 has a portion which extends downward from surface 156 of body 150. The body 162 encloses at a vertical distance orderly recesses 158 and 160. An elongated cylindrical screw -164 protrudes through the recess through an aligned slot 168 machined inwardly of the bottom of the body 150 to the length of the-

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the same. The screw 164 is lying with its head on one Disc to that between the head and the neighboring one surface of the body 162 is arranged. Likewise, a screw 166 is engaged through recess 158 it »body 162 to extend in slot 168, which is provided vertically under the screw 164. The head of the screw / is arranged in the same way and spaced apart from the body 162 by a corresponding disk-like device which provides a bearing surface.

The slots 168 open at their bottom through the surface 156 of the body 150, where the opening is formed by parallel plate elements which are fixedly attached to the surface 156 is reduced. The slot 168 takes the protrusions from the upper ends of clamping jaw parts 172, 174 in itself. Part 172 is on the volume of the body, far from the surface 152 and has a threaded hole at its uppermost end that is aligned with the recess 160 and is penetrated by the effective end of the screw 164. The jaw 174 has a threaded hole in one case, the can be aligned with the recess 158 and is threadedly engaged is penetrated by the screw 166. At its uppermost end, the jaw 174 has another recess, which receives the protruding part of the screwthread 164 that passes through it. The relevant screws 164 and 166 are 160+ in their respective receiving recesses screwed so that upon rotation of the same, depending on the direction of rotation, the jaw 172 to the jaw 174 back or from this can be moved away. Likewise, jaw 174 can be made to move toward or away from jaw 172 because of it.

It should be noted that the "cheek" 172 and 174 are so bordered and their most facing surfaces are so

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shapes and are arranged that such surfaces in the fields are exactly parallel that extend below the surface of the body 150. Suitable Iager inserts can in a manner to be assumed to be known in the adjacent material guide surfaces of the protruding parts the jaws 172 and 174 be arranged. .

As can be seen from FIGS. 8, 9 and 10, the body 162 has openings 176 which extend from the front to the rear run the same and connect the respective recesses or passages, whereby they on the one hand the recess 160 and on the other hand the recess 158 form. The one opening, which is the top one, goes into the upper part of the passage over that of the recess 160 is formed and the lowermost merges into the lower part of the passage through the recess 158 is formed. As can be seen in FIG. 10, a pin-like element 178 is arranged in this bottom opening, which has a cavity 169 which is determined by a depression in its surface part, which in the Passage that is determined by the recess 158 passes. The pin 178 has a counterbore in one end, the. defines a cylindrical recess 179, the wall of which is threaded, around a screw extension a cylindrical body extending outwardly of the recess 162 and part of a control handle 184 forms. The body of the control handle from which the Screw 182 forms an extension is relatively expanded in diameter. This makes a shoulder 188 formed, which faces the outer surface of the body 162 and a disc is between the shoulder and the. Area of the body 162 that surrounds the opening 176. The Notable Aspect of Atis Cavity 169, the is arranged transversely in the outer surface of the pin 178,

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it is that its main body is shaped like an arc and has a larger radius than the screw 166 on the part that protrudes through the body 162 «When turning of the handle 184 in one direction or the other, which is secured against elongate movement in a suitable manner is, the associated screw will in turn push the pin into its cavity 169 with respect to the lower Move part of the screw 166 that sits in it. As especially in Pig. 11 can be seen needs "when the plague setting with the screw in a certain position, just turn the control handle to turn the pin in to bring a position in which one end of the cavity wall is wedges against screw 166. This facility enables simple and positive locking of the Screw, once it is obviously adjusted, around the G-thread engaging jaw to adjust.

The upper control for locking the screw 164 is designed in the same way and at an upper peripheral The surface of the portion of the screw 164 that passes through the aligned opening of the upper passage or recess in the body 162 passes.

From the foregoing it can be seen that in each of the relevant opposite input and output side of the plate 130 a guide device is firmly incorporated, which has a very simple construction in which each protruding material guide jaw is precisely and individually arranged can be. Furthermore, a very simple but effective tool for securing a screw is given, to prevent their rotation once the position of the jaws has been determined.

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Through the physical inclusion of the protruding Jaws 172 and 174 into plate 130, the sons and can be easily oriented, a device is created with which the material feed to and between a punch and the tool elements of the tool set is guided accurately and precisely. This enables an optimal arrangement of the to be processed Material and a maximum use of the material in creating the desired parts.

While the guidance facility can be operated independently in other areas, it is of particular importance when this is incorporated into the stationary plate 130 of the punch part of the tool kit described. It enables a complete and useful unit to be achieved in a very economical manner. Further The controls and operations provided enable even inexperienced persons to operate them easily can. It is of the utmost importance that the material guides be universal in application as they are just as good can work when changing the facility. Changing the setting does not set particularly constructed Guided tours ahead, "as is normally required for every different fine dance.

Patent claims,

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Claims (25)

Claims J Die device, in particular for the fine blanking of workpieces, characterized by a tool or die holder unit with a plate-like base body which has a surface part for the application of a tool or die plate, by means of a device which is arranged on the periphery of the applied tool or die plate »I» ßXtw execution detachably to be attached, which stood in a JCltipistt · stand with the tool or die plate and can be moved out of this in order to fix it in a usual position on the base body, and by means of a device for controlling the position of the clamping device used and the die or die plate. 2. Vorriphtung according to claim 1, characterized in that the devices arranged on the circumference at intervals provided places on the base body fin are ordered. 3. Apparatus according to claim 2, characterized in that the devices arranged on the circumference are rod-like Include elements that relate to the base body are designed to be extendable and retractable and that The bath protruding from the rod-like elements fet Ie fifr 'a optional coupling with the clamp inpiotituiif 4. Apparatus according to claim 3, characterized in that "nil" eiiihiiet, that the clamping device has a central opening Uficl tine 309815/0844 Means for forming an enclosure for the used Has tool or die plate, wherein the clamping device has parts designed in such a way that they can be detached by the protruding end parts of the rod-like Elements in engagement 'can be brought. 5. Apparatus according to claim 4, characterized in that the clamping device and the protruding end parts of the rod-like elements have a device for locking that, when the relative rotation of the one to the other is effective. 6. Apparatus according to claim 5, characterized in that the clamping device forms an annular shape and one Tool * - or die plate with a circular outer circumference lies on the base body surface, and that peripheral parts of each of the clamping devices and the tool or die plate have a complementary shape, whereby when the rod-like elements are withdrawn the Ring holds the tool or die plate firmly and centered. · 7. Apparatus according to claim 6, characterized in that that the rod-like elements form part of piston devices which are contained in the base body, 8. Apparatus according to claim 6, characterized in that that the surfaces of the complementary shape are bevelled in the opposite direction in such a way that they would take one in the other provide. 9. Apparatus according to claim 8, characterized in that the base and the clamping device surfaces widen the partial insertion of the clamping device 3098 1 S / 0844 engage with each other and that the engaging surfaces are beveled in the same sense, 10. The device according to claim 9 »characterized in that the tool or G-esenkplatte in connection with. this has cutting and / or separating elements and these are integrated in order to be applied as a unit on the base body to be, whereupon the clamping device releasably connected to the rod-like elements and in a Clamping and centering relationship can be brought to the unit. 11. The device according to claim 1, characterized in that the clamping device has a frame-like shape and that a tool or die plate is complementary to the inner circumferential shape of the tool or die plate has complementary outer circumferential shape, the shapes are such that when pulling down one relative to the other, the clamping device has a centering function exercises. 12. The device according to claim 11, characterized in that the Grundkörj) he £ lächen tell (Tin the peripheral wall part has a recess / of / angular shape and - the outer periphery of the clamping device has the same angular shape _t thereby exercising a centering function on it when the clamping device is pulled down will. 13. The apparatus according to claim 12, characterized in that the die plate forms part of an integrated ..Werk- Eeugeinheit with a tool holder, a retaining and a back plate, and that the base body is designed for sliding insertion on this unit, whereupon the Clamping device releasable in one 309815/0844 centering, clamping relationship to the plate, if -It is placed on the base body. 14. The device according to claim 12, characterized in that the tool plate is part of an integrated Forms unit with tool elements and that the base body for a sliding fit with respect to the whole Unit is formed, and that a clamping device is designed for a sliding fit on the device arranged on the circumference and thereby in a clamping position for the tool plate is movable. 15. Device according to claim 1, characterized in that . that the plate-like base body has a material inlet side and a material outlet side and that on Material guide devices included on each side are, and that the management facilities several cooperating Clamping means comprise clamping jaws extending from the operating surface of the plate-like base body protrude and that each of the jaw devices are connected to devices for their independent adjustment are. , 16. The device according to claim 15, characterized in that that the material guiding device is formed by a body which has a device for attaching the same on the main body indicates that the body is relatively has opposing jaw members projecting generally perpendicularly therefrom, and that there is means in the body which are fan dependent on the jaw means are in an operational relationship for the purpose of fine-tuning the same. 30 9 8 IS / 08 44 17. The device according to claim 16, characterized in that the Peineinstelleinrichtung parallel screw elements which are fixed for rotation in the body and with means for locking the same in a desired position. 18. The device according to claim 17, characterized in that the locking device is an adjustable Comprises control member having a cavity for receiving a portion of the screw device and optionally by a slightly increasing movement of the same to free the associated screw direction, for turning or wedging the same. against rotation, is adjustable. 19. The device according to claim 15, characterized in that the material guiding device has a general rectangular block comprising a pair of spaced apart, longitudinally extending Comprises bores and by a device rotatable in the bores and coupled to the clamping jaw device, for the independent and relative adjustment of the clamping jaws. 20. Die device with an upper and a lower half, one half of which as a tool holder and the other than die holders, characterized in that at least one of the tool and die holders includes a plate-like insert and means movable to and from the insert for donning the same and the device includes a retainer that engages the insert is to be brought to this in its desired use 309815/0844 position. 21. The apparatus according to claim 20, characterized in that the retaining device contains parts that are so are adapted to be aligned with and engaged with the peripheral portions of the insert to lock the insert in place. 22 * Device according to claim 20, characterized in that that the device comprises a liquid actuatable device for moving the plague holding device in the Engagement with and out of the peripheral portions of the insert. · 23. The device according to claim 20, characterized in that that the insert with a tapered peripheral edge portion is formed, and that the retaining device is locked on this H /.^ st. '24. Device according to Claim 21, characterized in that the insert and the retaining device have parts which are positively and negatively matched to one another and which fit into one another intervene to the position of the bet to be determined. 25. The device according to claim 20, characterized in that that each of the tool and die holders has a plate-like insert with a tapered peripheral edge portion include, and that the retaining device is powered is to move to and from the tapered peripheral edge portion of each insert, releasably around it to lock in its place. 26, device according to claim 25 »characterized in that 309815/0844 26th that the retaining device and the associated inserts have associated surfaces that are used for relative bearings on one another are set up to automatically place the inserts after they have been fixed in their places to center. 309815/0844 e e r e i t e