DE1427330A1 - Die press - Google Patents

Description

THE LAMSOIi * SESSIONS 00ΜΡΑΝΪ

5000! Diedeman Road, Cleveland, Zone 9, Ohio / USA

Joint press

The invention "relates to a die press which has a punch part or a pair that cooperates with a die or a die, and it is an object of the invention to provide a new structure for such a die press.

It is known in the art of cold working metals that such die presses are commonly used are exposed to very heavy loads, which lead to very rapid wear and tear and frequent breakage in particular lead the punch part of the die press. If there is a slip or a break in the stamp part occurs, the stamp part must be replaced. The machine that works with the articulated press equipped, then runs empty and production time ./,ehfc lost.

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Db. the 3rd part usually as the weakest part

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the "known cold forming and cold drawing press" considered Attempts have been made to reinforce the stamp by improving the dimensions or the constructive formation of this stamp part. However, these attempts mainly led to stamp parts with specially trained li'ornien, which were expensive to manufacture. The increase in cost and the difficulty of production resulted from the production and training of the special design of the stamp part and from the increasing demand for tool steel, which is required for such specially designed punch parts is. -

The wear and tear of a stamp part usually occurs at the end that engages the workpiece arrives and because of the characteristic, non-uniform body shape of this end, which so far at Stempel- is used, these stamps usually cannot be repaired for further use will. These stamps have been scrapped. Since the metal used in such stamps is an expensive one Tool steel ", the frequent replacement of stacking parts increases the costs of the pressing work considerably,

These

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These disadvantages are eliminated or prevented by the invention in that a novel articulated press is provided which has a punch part which is made from continuous lengths of rod material of tool steel and which has a uniform dimension and a uniform cross-section which is essentially is the same as the cross section of the bar material,> ■ making it possible to implement the stamped end to end to the life of the stamp member to be increased "... and so it is possible that stack part £ vcr another Verv / ending Work up by grinding one end or both ends.

The invention provides a new -esenkpresse is also provided in which ei: .i stamp member is arranged in a holder which mmen forms a preformed composite unit with the stamp member zus &, which is so arranged that these Einhet of a support or bear or the like can be removed, and that this unit can be exchanged on a bear or the like, so dö-.ss the exchange of the stamp eil it very quickly without an ongoing interruption of the operation d; can be done by simply using a different stamp unit in the machine.

Additionally

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In addition, the invention creates a new die press created, "which is a simplified form, of a scraper has, which is assigned to a stamped.

In the figures of the drawing are exemplary embodiments of the invention shown. Show it!

3? Ig.1 an axial sectional view of the inventive die press,

a sectional view taken on the line 2-2 of the development Pig. 1, which is mainly a bottom view of the punch device of the die press,

a cross-sectional view of the stationary or emergency facility the escalator, taken along line 3-3 the

Pige4 is a partial sectional view corresponding to a rope of Fig.1 and which corresponds to the scraper of the Gesefckpresse shows on a larger scale,

a perspective view of a stamp part for the die shown in Fig. 1, wherein the punch part

is removed, _t '

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Pig. 6 is a view similar to FIG. 5 showing the insert assembly being removed is,

7 shows a sectional view corresponding to FIG. 1, showing a further exemplary embodiment of the inventive Gresenkpresse shows

Figure 8 is a sectional view taken along line 8-8 the I-'ig.? " which is mainly a bottom view the stenipelar arrangement shows

a partial elevation view taken along line 9-9 of the stationary or deployment facility;

Fig. 10 is a perspective view of a removed Stamp and

Fig.11 is a perspective view showing the counter punch the deployment facility shows.

In Fig. 1, the new Gresenk press 10 according to the invention • is shown, which has a stamp assembly 11 which carries a stamp part 12 and a stationary or so-called Binsatzeinrichtung 15 _f has a die part 14 with which the stamp part 12 works together to by means

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a cold deformation of a workpiece 15, which is arranged in the opening 16 of the die, a desired lorin. granted.

The stacking arrangement 11 is movable in the closing direction and in the opening direction with respect to the insert device 13 in that it is fastened to a movable bearing 18, which in this case is designed and set up in such a way that this carrier with the back and forth movement ...- a]? manufacturing machine such as a ^: punch press or the like, which is not shown, can be connected. The insert device 13 is attached to the stationary carrier of the manufacturing machine, such as, for example, to a mounting plate 19 which is attached to the support surface 20 of the frame part. 21 of the machine is attached.

The stamp device 1T has a hollow stamp holder 23 which is provided with a cylindrical recess which extends axially from the lower end into the fold 23 to the. Clamping the stamp part 12 is used. The holder -23 is ai.s, a drum-shaped device is shown which has an annular side wall part 26, the inner surface of which is the cylindrical side wall 24a 909817/0008

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the recess 24 "forms. The holder 23 also has at the top a.!. Transverse wall 27, which has a surface which forms the inner end wall 24b of the recess.

The Jöusama pull-up jig 25 has a It has a frustoconical design and is provided with a central axial opening 28, which forms the stamp part 12 with Passitz takes up. The jig 25 is so arranged in the recess 24 that the wider inner end of the clamping device · against the transverse End wall 24b is seated and that the narrower outer end points towards the die 14. The injection device 25 is arranged in a central position in the recess 24, with an annular space between this clamping device and the cylindrical inner side wall 24a is provided in which a wedge member 30 is inserted.

The illustrated wedge member 30 has a ring part, which has a cylindrical outer wall which rests against the inner side wall 24a and the axial length this wedge shape is such that this is the side walls touched essentially over the entire length. The jig 25 and the wedge member have miteinbaider cooperating ring surfaces 31 and

the

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which are arranged on their adjacent sides and which are tapered surfaces that calibrate with respect to the common central axis 33 of the bracket and the recess 24 extend axially inwardly diverging. The wedge member 30 is connected to the bracket 23 connected by screws 35, which are sioh through the wedge member hindu erßreoken and who act on this wedge, in order to draw dfceees axially into the recess 24.

The illustrated clamping device 25 is in one piece formed, this clamping device 25 in The longitudinal direction of one side is split, as shown by the gap 36, this jig 25 has limited flexibility which makes this jig contractable, so that the stamped 12 in ^ beiteinetimpitt ^ gmit the after inward wedge effect can be contracted. This wedge effect is due to the one another cooperating tapered surfaces and 32 generated γ / enn the wedge member 30 by the screws 35 is pulled into the recess 24 »

V / ie shown in Mg ₉ 1, iBt a v ^ esentlicher leil the length dee Sterapelteils 12 in the opening 28 is disposed and is clamped by the chuck 25 * '· A

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A lighter IeiJJ.'der the stamp part 12 extends long away from the holder 23 and can into the Geαenk recess in ". The protruding stamp extends !! himself duroh a scraper 37 hinduroh, which is still "described will be aoll. The inner and outer end parts of the Punches 12 have end pushers 12a and 12b. in the present lalle uatsen these end bumpers flat transverse surfaces. The punch shown points over the entire length between the end parts 12a and 12b shows a cylindrical same cross-section and the Opening 2Θ in the clamping device 25 has in in the same way a cylindrical shape.

An important feature of the invention can be seen in the fact that the punch 12 is a straight individual piece, see FIG

flWtWfrterials aui tool steel is and a uniform form fairy shape and has a uniform cross-section * '"" -der is essentially the same as the cross-section of the bar stock if the punch 12 is this Uniform shape and this uniform cross-section over the full length between the end push parts 12a and 12b can weintι this stamp by cutting off from a bar material made of tool steel of the specified Cross-section size and the specified shape, being a straight piece of the predetermined L.-mge that

for

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is required for the stamp, is cut off »

In the present case, the workpiece 15, as in Figures 1 and 4 shown, a sleeve-shaped cylindrical Body part 15a which is provided with a cylindrical recess and the lower band part 15b is forked. So much for the conditions of this deficit are drawn, the punch 12 only needs the above-mentioned flat surfaces on the end parts 12a and 12a 12b have. The end parts 12a and 12b can therefore same cylindrical size and the same cylindrical Have a shape like the .middle üJeli. of the stamp, Since the The punch has a uniform size and a uniform one Cross-section on v / e, as e, p. Was mentioned above, the punch Inde can be replaced towards the end if there is wear or a break in the end part 12b occurs which comes into engagement with the workpiece. In this way, an increased service life of the stamp 12 is achieved if this stamp is uniform örsize and a uniformly dimensioned cross-section and this is an advantage that blshetr has with the Stamping could not be achieved that specially shaped and the biBher were generally used.

The punch 12 shown inFig.1 sits with its end part 12a against an insert 38 in the stamping device

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is provided and which rests against the stamp from behind. This insert 38 consists of a short one Length of a bar material made of tool steel, which has the same cross-sectional size and the same size, like the Yierkzeugstahlstabmatorial from which the Stamp 12 consists of '!' Anyone wishing to use this can do so immediately the transverse end wall 24b " issue. However, this insert is preferably in contact with a hardened disk 39 which is inserted into the transverse wall 27 of the holder 23 is inserted.

From the described structure of the stamp 12 and from the described attachment of the stamp in the stamp device 11 it can be seen, " ¹¹ ISS this stamp is not only reversible end to end in order to extend the life of the stamp, the end part 12a and the end portion 12b can be re-grounded by grinding if this is necessary, so that a further extension of the life of the stamp is thereby achieved Abrading sets, in which the end parts 12a and 12b are restored to the state, is compensated by the length of the insert 38 Bnd part or both end parts was shortened, the 909817/0008 additional

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additional length of use sets the punch back to its full length. When the punch 12 starts If the exact length is v / e, the etched portion 38 is removed and the end part 12a lies directly against the sole. ■ · ·

The stripper 57 has a combined housing and Abetreifformeinriehtung 4-1 (Pig.4), which 'camouflage the stamp is arranged around. Furthermore, the stripping device 37 has stripper actuation bolts 42 and 43, which extend axially

• /in . . through passages 44 and 45 of the clamping device 25 extend through. The bolts 42 and 43 have at the upper end heads 42a and 43a, which are in axial ' Bores 46 of the Uuerwandung 27 of the 'holder work uruä these heads prevent the bolts from falling out of the passages 44 and 45. The lower end parts of the Bolts 42 and 43 persuaded themselves from the Mnepannelnrichtüng 25 and are provided with cuts 42a and 43a made in one of the adjacent sides. The illustrated wiper part 41 has a die sleeve part 41a and around the top of the sleeve a side flange portion 41b.

At the upper end of the stripping device 37 is with a widened leil 47 ausor.li8te, tj, who is a Xager for the wiper part 41 forms and that in the recesses 42a

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and 43a is arranged to allow the connection dea Ab « Streif grant with the Abstreif bedbolts 42 and 43 serves. The widened part 47 shown consists of an upper and lower edge part 47a and 47b and these hanging parts surround the punch 12 and between these ring parts the ring flange 41b of the Abatreif is granted arranged. The opening of the lower sense 47b faces a sufficiently large transverse dimension so that the sleeve 41 can be received.

made sure that the part 41 was part of a scraper i weA this rope because that the sleeve 41a is partially ribev / egt into the recess 16 » as shown in Sigurs 1 and 4, like a Gresenk member when the öesenkpresse 10 in their closed position. The lower end of the sleeve 41a has such a size and a such a shape, which are suitable for a desired orientation work at the upper end of the Werlcstüokea 15 perform. In the present case, the sleeve 45a an annular lip 49 which acts on the Werketüok in order to achieve a desired depression or Fold 50 to form the inside of the upper end of the workpiece opening. When the wiper part 41 in the stamp device 11 in the manner described

arranged

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is arranged, this scraper part · 41 by the upper ring 47a during the closing movement of the Stamp device 11 a downward Exposed to pressure.

During the opening movement of the punch device 11, the lower end part of the punch 12 is pulled out of the die recess 16 and the shaped workpiece hangs on this punch and is then lifted out of the die recess. During the opening movement of the lowering device, the stripping device 37 initially moves with the punch 12 and the workpiece 15 upwards. However, the Abstreiferbolzen 42 and 43 currencies in the B _o at a desired point of the opening movement 44 and 45 NaOH below bewtgt to thereby "41 to give dtm stripper a length downward Abatreifbewegung dee die through which the workpiece 15 stripped from the punch will. The downward movement of the stripper bolts 42 and 43 can be exercised in a suitable manner by push rods 51 and 52 (Fig.i), which extend through the carrier 18, and which in the usual way during the opening movement of the stamp device directed towards the top be operated »

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\ The

~ 15 -

The bores 4-4 and 45 _f through which the stripper bolts 42 and 43 extend are "in the illustrated embodiment, bores which are arranged in the clamping device 25 and which have such transverse dimensions to allow the necessary play so that they can the stripper bolts can move freely in these bores when the clamping device is drawn together in such a way that it clamps the punch 12 in place , has the advantage with sif that the scraper bolts at dex ¹ point of the washouts 42a and 42b are relatively ", ssig sohwaoi ·. trained bind. In the pail that the stamping device 11 is prevented from breaking properly by the stripping device engaging a foreign body; which is on the top of the insert device 13,> the break can only be on one or both ab- "

streak or pin and occur on the weakened parts and a breakage of a substantial part of the machine does not take place. Since the Abstreiferbolzen 42 and 43 consist ltnieaüssig cheap material from a married ^ and in the l anufacturing verhültnismäoBig ⁿ are cheap, and since these bolts can easily be replaced grounded v /, a low in this li'alle occurring break only to a "? · «!« » Ver Iu et / über Iren«,

Y / ie -

¥ he figures 1, 2 and 4 show the transverse breathing of the Stamp 12 with respect to the transverse dimension of the bore of the sleeve 41a such that the stamp is relatively tight fits in the hole. This sleeve is therefore used also as mitigation and stabilization for the stamp, ■ in order to align it with the die 14 ο additionally the sleeve "" 41a-reduces the lateral deflection or bending of the stamp and thereby the likelihood of a Steiiipelbruohes is significantly reduced.

If the punch 14 should break, this break usually occurs while the punch is in engagement with the workpiece 15, as shown in Figures 1 and 4. The break is usually at the point The rupture lies in the transverse plane at the lower end of the clamping device-25. Because of the relatively tight fit of the stamp in the bore of the sleeve, this sleeve 41 lifts during the next upward movement of the carrier 18 the broken part of the punch / on and the workpiece 15 »which is attached to the broken punch is lifted out of the die 14 at the same time»

The upward movement of the carrier Ϊ8 leads to a relative Downward movement of the sleeve 41a by means of the actuating pin 42; and 43. Instead of stripping the workpiece from the punch

"" ■: will,

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is the sleeve both the broken punch wears because as AUOH ^ at this ^ workpiece lngende n downward _e This downward movement of the sleeve, the broken punch and the workpiece assigns at least some of these parts in the movement path of an associated Zuführungsejirichtung not shown, such as for example, a feed device, which is illustrated in the US Patent 3,030,834 ₉ By such Zuffthrungseinrichtung these parts can be removed. μ

The recesses 42a and 43 & of the bolts 42 and 43 form an open guide seitlioh that äbh extends transversely in a direction towards the axis of the punch 12, as shown in Figure 4. * The widened vrLrd device 47 normally in the guide, the duroh the profiles 42a and 43a formed, held by the presence of the punch 12 in the bore of the sleeve 41a. If any breakage of the punch 12 occurs, the widened parts can be removed from the guide by a removal movement of the feed device. If in this way the widened or enlarged parts 47 are removed from the recesses 42a and 43a, the sleeve 41a together with the broken part and the work piece 15 are ejected from the work zone and these parts therefore do not result in one Destruction of the escalator. j

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if

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H27330

If the Ste-.Lpeleinrichtung 11 the in the above Structure described on., Eist and the described Contains parts, namely the punch 12, the holder 23, the jig 25, the wedge member 30 and the Stripping device 37, this Steiupeleinheit can be assembled from prefabricated unit, which the holder 23 has as the outer housing. The on These wines as a prefabricated unit trained temp el of order 11 can then by comparatively simple operations can be attached to the carrier. 18 and it can be proportional to this attachment simple. Clamping devices find application, which a pair of gripping lugs 54 and 55 which on the carrier 18 by means of bolts 56 and 57 and Clamping nuts 58 and 59 fastened Bind. The approaches and "55 have suitably shaped inner end portions, which cooperate with the holder 23 in that these.in engage a groove 60 in the side wall part 25 of the holder is provided.

As stated above, the punch 12 is in the Bracket 23 arranged in such a way that it is in the common axis 33 of the bracket is located «It is important rdaas the attachment of the stamping device 11 on the carrier'18. the punch 12 is arranged in an exact axial relationship to the Ggeenkausspe.rung 16. For this purpose is the

• Carrier 18

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Carrier 18 on the underside with a recess 62 provided and a dispensed; c! irägter annular seat 63 extends around this. recess .. The recess 62 is sized to accommodate the upper end of the bracket 23 when the device 11 attached to the carrier 18 in such a position is that this can be gripped by the clamping lugs 54 and 55.

The holder 23 has a correspondingly designed conical edge 64 and is aligned with its common axis 33 exactly to the axis of the die recess 16 when the annular conical edge is seated in the annular conical edge 63 of the carrier 18 ..nriohtung 11 to the Eighth 33 around it is IELT ^ _t when the stacking means is arranged at the carrier and through .18 Ri: i) s and hat fleeth 66 and 67 'which are arranged on the holder and on the support, as Pig .2 shows. The self-centering. The effect of the annular conical surfaces 63 and 64 and the orientation effect of the parts 66 and 67 considerably facilitate the fastening of the stamp device 11 to the carrier 18, because the previously required time-consuming alignment and checking are no longer necessary.

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The insert device 13 is in the long run. 1 and 3 shown and will now be described. The deployment facility has a support ring 69 in which the die 14 attached 1st »This attachment can be made using suitable intermediate rings '70 "and 71. The insert The device 13 also has a counter punch 72 on the upper and lower end pressure parts 72a and 72b Has. This counter-stack 72 is arranged in such a way that the upper end portion 72a extends into the die 14 and the messenger wall of the die recess is 1.6. Of the Die support ring 69 is in a suitable "Weiae -an der Auf-, clamping plate 19 attached, for example by means of ■ Einspannansätaen 75 and 76 »in the support ring 69 engage a number of points around this ring and with the platen by means of screws 77 and 78 or the like are attached, which sioh through the Sinspannari sentences extend hindu.

The counter punch 72 consists of a straight piece of a predetermined amount of a rod material made of tool steel and v / e has a full length cross-section between the band portions 72a and 72b a uniform This counterstamp is between these ends one; Identical Sorrn and these same ^ massive shape and this uniform cross-section. the same as those present in the rod material from which the piece was cut off with a pre-cut length =

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The illustrated punch 72 has a cylindrical cross section and the rod material is made of tool steel, from whichever. the counter-punch is cut off, also has such a cylindrical cross-section:) * shape .. The upper country printing part 72a in the present case has a die formation 79, which consists of an axial tongue emtxb on the flask side, which was worked out at this end part. This element extends into the die recess 16 and forms a transverse slot at the lower end of the Yiterl ^ piece 15 during its molding.

The insertion device 15 also has a holder 80 at the lower end, welohe the counter stamp 72 in the desired position with respect to your die 14 and hc.:it. The holder 80 is in the through opening 81 a sleeve 82 arranged which extends through the platen 19 hinduoh stretches. The holder shown has a holding plate 83 with a central bore 84 is provided to the lower end 72b of the G-egenstempels

72 to include. The bracket 80 also has a hardened support plate 85 which is between the BracketBplatte 83 and the Masohinengesteilteil 21 is arranged and against which the lower

End face of the Q-egenstempels 72 is supported. ^f

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The mounting plate 83 und'die support plate 85 bind connected to the Masohinengesteilteil 21, namely · for example by means of bracket bolts 86. The ' End part. 72b of the Gregensteiiipels 72 is in the mounting plate 83 held by means of a bracket cover 87, which is connected to the mounting plate by means of screws. The bracket cover 87 works with a; .. snap ring 39 together, which at the lower end part 72b

/one
is in front of, and engages in the ring groove.

In addition to your advantage that the counterstamp from a straight piece of vorbostimmenor length can be made, which of a stick maturial is cut from tool steel, there is also the advantage that the G-egenstenipel 72 by means of Appropriate labeling of the end prints it 72a v / ieöer can have been repaired to extend the service life to increase, 'when imitating such a thing. Y / ie repair is required. In order to compensate for the shortening of the counter punch 72, which extends through whose repair can result, is the insert device 13 with spacers in the form of An etch 90 provided, these inserts vorbeatimmte Have strengths and taking these stakes between the Support plate 85 and the Maöchinengo control part 21 are used. .

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The insert 90 has an axial thickness to the Shortening the G-egens temp ice 72 to compensate for that at the YiTiederinctandsetzung of the end part 72a occur can. The lifespan of the opposing tuple 72 can be In this way, installation work was repeated over and over again of the end pressure part 72a can be considerably expanded, and inserts 90 can continue with. progressively increasing Strength can be used in the insert device 13 in order to reduce the progressive shortening of the G-egenBtempels

compensate. If a completely new G-egensteinpel Arranged in the device 13, the insert be omitted.

From the structure of the Einc.tizeinrichtung 13 »as it was in the ' As described above, it can be seen that the G-egenBteinpel 72 provides essentially the same advantages for the jß-esenkpresse 10 supplies, as the punch 12 with the exception that in the illustrated embodiment the counter punch 72 is not exchangeable end to end is, since the upper end portion 72a has a tongue member 79, which forms a Gteeenkteil and there the lower end part 72b has a groove for receiving the snap ring 89.

FIGS. 7 to 11 is a modified die press- $ 2. shown which in general of the voefcejienden

described

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■ described G-esenkpresse equals 10, "in which, however, the punch 93 of the stamping device 11a and the G-egenstempel 94 of Sins at ζ device 13a a non-circular cross section? / Iron _e In the illustrated Ausführungs'beispier have this stamp a

. polygonal cross-section, namely a rectangular cross-section. The stamp 93 and the G-egenstempel are both made of a rod material made of tool steel " manufactured. Each punch consists of a straight one. Piece of predetermined length, which of a such rod material has been cut off and each punch has a uniform size and a uniformly shaped cross-section - these G-sizes being essentially the same,

"As with the rod material from which these pieces were cut are. . -

The stamping device 11a has parts that the Parts of the stamping device 11 correspond to that described above and the same Reference numbers or the same lettered reference numbers are used to denote the different parts corresponding to each other mark. ' The contractible jig ■ 25a of the stamp device 1 ta differs from the Einspaniieinrichtung 25, which in the above

Described 9098 17/0008 .. ^ ^ T

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described isj ^ daA & n that these are two complementary segments 95 and 96 having between them a passage 97 of suitable cross-sectional size and Form "in order to receive the stamp 93 can. The segments 95 and 96 can be closed from opposite sides in the clamped position with respect to the S.tömpel 93 namely by a wedge effect which is exerted on these segments by means of the wedge member 30a

In the modified stamp device 11a, the upper end portion 93a of the stamp has a flat end surface on. The end part 93b. At the lower end is, however, provided with a die which is suitable

χ to form a workpiece 100 which is in the recess of the die 102 is arranged. As shown in FIGS. 7 and 7, the mold in this case has a transverse shape extending axial central rib 104 and transverse grooves 105 which run parallel to the rib and which are arranged on opposite sides of the rib.

Since the counter punch 94 of the insert device 13a a right-angled (cross-sons, the die 102 is equipped with a passage 106, which has a corresponding has a right-angled cross-section. The upper end portion 94a of the extends in this passage

Counterstamp »

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Blessing temp els. In the illustrated embodiment ^: the upper end part of the counter punch 94 is equipped with a flat end surface HOY instead of a press mold and this flat surface forms the bathing surface of the counter recess 101.

The insertion device 13a corresponds essentially to the insertion device 13 which is described above and the same reference symbols or the same reference symbols with letters are used to identify the parts which correspond to one another or which essentially correspond to one another. The lower end part 94b of the counter-punch 94 is fastened and held in a holder 80, specifically in a manner which corresponds to that which has been described above for the lower end part 7.2b of the counter-punch of the pig _e 1 However, if the counter-punch 94 has a square cross-section, instead of a snap ring, it is provided with lateral projections 108 which are arranged on opposite sides. "

The projections 108 on the counter-stack 94 can thereby trained selil that approaches to opposite Sides of the piece of bar material made of T / tool steel, from which the stamp is formed, welded or

- soldered on

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soldered to / earth. The lugs' 108 are in recesses 109 of the mounting plate 83 and v / ground through a bracket cover 87 is held.

In the modified die-sink press 92, the inserts are used 58a and 90 of the stamp device 11a and the insert device 11b for the same purpose and enable the the same advantages as set out in the foregoing "with respect to the inserts 38 and 90 of the G-esonk press 10 became. During operation of the die press 92 hangs during the workpiece 100 on the punch 93 during the opening movement and is thereby lifted out of the counter recess 101. The workpiece 100 can be removed from the punch 93 by means of known devices suitable for this purpose subtracted from.

From the above description and the figures of Drawing it can be seen that a new die press is created by the invention, which in economic Way with stamps and reverse buckles can be fitted 'and these hatchets can be used in kept in a usable state during an extended service life by virtue of the fact that this Punches and stamping parts straight pieces of predetermined Length of one bar /: erial made of tool steel are, where the uniform shape and the

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uniformly dimensioned cross-sectional dimension of the rod material were retained. It can also be seen that the invention creates a new die-die press in which the stamping device consists of a previously assembled unit, the stamping device being fastened as a unit to and removed from a movable carrier, and this unit being automatic arranges the punch in exactly aligned position with respect to the die. In addition, it should be noted that the invention creates a new wiper device on a stamp device which has advantages over previously used wiper devices ₀ .

Claims

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Claims (1)

-29- H 27330 Pat entan. sayings Die press with a stationary device which has an embossing device and a die arranged thereon, which has an opening which is intended to receive a workpiece "and with a punch and a (carrier, which is movable towards and away from the die device" and which has holders for clamping the punch, characterized in that the punch is a straight individual piece of a predetermined length of a rod material made of tool steel, that the punch has constant dimensions and a uniformly shaped cross-section over its entire length, so that the opposite end portions of which are the same and that the punch is reversible in such a way that it can cooperate with the die for each end portion, that backing inserts are provided in the holder which engage one end of the punch so that the punch can be repaired by grinding its end portions is and that the inserts are axial Have dimension to compensate for the shortening of the punch caused by the grinding. 909917/0008 Die press according to claim 1, characterized in that, that the stationary device has a Gegenstenipel or a die stone pel, which is an end part which engages the workpiece and which extends i ± m into the die and which 'forms at least part of the bottom wall of the die opening / that this punch a straight single piece of before "a certain length of a StaTomaterials made from tool steel is that this one Stamp by grinding the end part that comes with the workpiece comes into engagement, reinstandsetzfcar is that more holders for the counter punch are provided, the further deposit ^ inserts have which towards the opposite end portion of the counter punch and that these inserts have a thickness dimension that allows for the shortening of the counter punch compensates for the grinding of the end part, which comes into engagement with the workpiece, is evoked ». . 3 «Die press according to claim 2, characterized in that that the opposite end of the Gegensteinpels with a recess is provided and that the bracket for this stamp has a snap ring, which in this Mute intervenes » 909817/0066 H27330 4. Die press according to one of the preceding claims, characterized in that the stamp, the gtempelhalterung and the deposit inserts form a pre-assembled unit "and that this unit is detachably connected to the carrier " 5. G-esenkpresse according to claim 1 to 31 characterized by a wiper device which has a sleeve which surrounds the punch, actuating bolts, which are arranged displaceably in the punch holder and which have parts that are to be opposite one another Sides of the punch extend away from the punch mount with the protruding stud portions in the opposite pages Have recesses and by means that are arranged in the recesses and with the Sleeve are connected to hold them and to transmit a stripping movement to this. 6. Q-esenkpresse according to claim 5 _t characterized,: d, aas the punch, the punch holder, the backing • inserts and dfe Ab stripping device form a pre-assembled unit and that this unit is connected in a detachable Yfeise with the firäger is. 909817/0006 . : 7p G-esenkpresse according to claim 5 and 6, characterized in that, that the recesses of the wiper bolts form a path that extends across the Axis of the stamp extends and out of which . ' the sleeve holder tion by means of an "assigned Feeder is movable when a break of the punch occurs so that the sleeve and the ΐΒϋι. · ^ · 3Μϋ1 of the broken punch can be ejected from the working zone of the G-esenlrpresse. 8 »G-esenkpresse according to one of the preceding claims, characterized in that the holder for the Stamp has a hollow holder which is provided with a recess and a side wall, which extends around the AusBpaimg, the one contractible clamping device in the recess is arranged to receive a rope of the punch, that a wedge member is arranged in the space between the clamping device and the Seifönwandung that the adjacent sides of the wedge member and the jig have conical annular surfaces that löioh co divergingly extend into the recess and £ ° which are mutually arranged in such a way that this one ^ Cause the clamping device to contract, lim ο to clamp the punch and around the clamping device ' ο "to keep in the recess and that with estigjitigsein-. directions provided bind that are effective to the : ''' Wedge link To move the wedge member into ^ the interior of the recess, 9e die press according to claim 8 _f, characterized in that the clamping device has openings in which the actuating bolts of the stripping device are arranged with such a clearance that jamming of the bolts is prevented by contraction of the clamping device » 10. Ö-esenkpresse according to claim 8, characterized in that that the holder is sleeve-shaped 11. Die press according to claim 8, characterized in that that the wedge link is shaped like a circle 12. Gresenk press according to claim 8, characterized in that that the hollow holder is sleeve-shaped, that the stamp, the stamp holder, the deposit besät ze j the clamping device and the wedge member form a unit that can be assembled beforehand and that the unit can be attached to the carrier in a detachable manner. 909817/0006