EP2839897B1 - Agencement de poinçonnage et son utilisation - Google Patents

Agencement de poinçonnage et son utilisation Download PDF

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Publication number
EP2839897B1
EP2839897B1 EP13181503.7A EP13181503A EP2839897B1 EP 2839897 B1 EP2839897 B1 EP 2839897B1 EP 13181503 A EP13181503 A EP 13181503A EP 2839897 B1 EP2839897 B1 EP 2839897B1
Authority
EP
European Patent Office
Prior art keywords
punching
die
screw
head
pocket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP13181503.7A
Other languages
German (de)
English (en)
Other versions
EP2839897A1 (fr
Inventor
Albrecht Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vanderpool Julia
Original Assignee
Vanderpool Julia
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vanderpool Julia filed Critical Vanderpool Julia
Priority to EP13181503.7A priority Critical patent/EP2839897B1/fr
Priority to ES13181503.7T priority patent/ES2549797T3/es
Priority to PCT/EP2014/002241 priority patent/WO2015024645A1/fr
Priority to US14/913,624 priority patent/US20160199898A1/en
Publication of EP2839897A1 publication Critical patent/EP2839897A1/fr
Application granted granted Critical
Publication of EP2839897B1 publication Critical patent/EP2839897B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/34—Perforating tools; Die holders
    • B21D28/343—Draw punches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/14—Particular arrangements for handling and holding in place complete dies

Definitions

  • the invention relates to a punching arrangement with a punch and a holding plate for the punch and its use.
  • Punching dies are used in so-called “prog dies” and “progressive presses”. These types of tools work as kits with possibly several sister tools in high pressure punch presses. Main field of application of such punches is the automotive industry, in particular the construction of chassis and body.
  • Such a "prog die” small to medium size has external dimensions of about 1 600 mm x 1 200 mm, with a variety of dies, for example, about 20 mold punches.
  • punches are usually arranged spatially close together, surrounded by piping, which serve to monitor the pressures of built-in gas springs by means built-in pressure gauge.
  • a significantly reduced service life of the arrangement results when a play-bearing storage of the punch in the holding plate during retraction or stripping is recorded. In this case, very high bending and gravitational forces act on the connection between the punch and the retaining plate.
  • Object of the present invention is to provide a punching arrangement in which the service life of the arrangement is significantly high due to a play-free storage of the punch in the holding plate during the retraction or stripping.
  • a conical section of the pressure piece contacts a conical section of the pocket in a planar manner.
  • the punch shoulder bears against the retaining plate or pressure plate and a screw head of the retaining screw with axial clearance relative to the clamping screw is arranged.
  • the punching arrangement in particular the means for attaching the punch head to the holding plate, it is ensured that the punch with its punch shoulder is biased backlash against the holding plate or the pressure plate. During the punching stroke, it is thus ensured that the punching forces are transmitted between the punch shoulder and the holding plate or punch shoulder and pressure plate. The punching pressure is thus not absorbed by the pressure piece. Relative to the return stroke or stripping operation of the punch, this has the consequence that the holding plate and the punch are moved without play, because this backlash is guaranteed by the inventive design and arrangement of the pressure piece. There is thus no play-afflicted connection between the holding plate and punches available or it is ensured that no loose connection between the holding plate and punch sets.
  • the punching arrangement according to the invention can be by means of the clamping screw on the pressure piece such a bias between punch shoulder and plate or pressure plate produce, which guarantees that the punch still stuck to a theoretically possible setting process and thus no play between punch shoulder and plate or pressure plate can.
  • Preferably means are provided for aligning the pressure piece in a direction of rotation of the pressure piece relative to the conical portion of the pocket.
  • a loose pre-centering of the pressure piece is ensured, which can be easily ensured that when delivering the clamping screw of the conical portion of the pressure piece contacted the conical portion of the bag surface.
  • the described arrangement for holding the punch in the holding plate is provided twice.
  • two pockets are introduced into the stamp head and it interacts with the respective pocket a pressure piece and with the pressure piece a clamping screw and a retaining screw together.
  • these pockets are formed identically, further formed this clamping screws identical, further designed this pressure pieces identical and finally formed this holding screws identical.
  • the punching arrangement according to the invention is used in particular in a "punching and / or pressing tools having" Prog
  • Fig. 1 shows the top of a "prog die” punching unit 1, which is provided with a plurality of dies, specifically eighteen dies. These are stored in a common unit, which has dimensions of approx. 1,600 x 1,200 mm for small to medium size.
  • This punching unit 1 is mainly used in the automotive industry, especially in the production of chassis and body.
  • Fig. 1 It can be seen that the eighteen forming dies are arranged spatially close together, surrounded by pipes 3, for monitoring the pressures of built-in gas springs 4 are used by built-in pressure gauge in the tool.
  • Three of the forming dies used in the punching unit 1 are designed according to the punching arrangement 2 according to the invention.
  • This punch assembly 2 according to the first embodiment is in the Fig. 2 to 29 illustrated.
  • the punching arrangement 2 has a punch 5 and a holding plate 6 for the punch 5.
  • the punch 5 has a stamp part 7, by means of which the actual punching takes place, furthermore a punch head 8 connected to the stamp part 7.
  • the stamp head 8 is plate-shaped.
  • the stamp member 7 On the side facing the stamp head 8, the stamp member 7 has a punch shoulder 9.
  • the pressure plate 10 is arranged between the punch 5, specifically the punch shoulder 9, and the holding plate 6, a pressure plate 10 is arranged.
  • the pressure plate 10 has a this passing through slot 11.
  • the pressure plate is provided with recesses for receiving screws 12, wherein the unillustrated heads of these screws 12 are recessed in the region of the underside of the pressure plate 10.
  • the pressure plate 10 is fixed to the underside of the retaining plate 6, specifically screwed into located there threaded holes 13.
  • the slot 11 has such dimensions that the punch head 8 passes through the pressure plate 10 with little play in the two space coordinates running perpendicular to the insertion direction of the punch head 2.
  • the holding plate 6, the pressure plate 10 and the stamping part 7 have an identical cross-sectional shape, namely in the form of a rectangle with bevelled corners.
  • the areas seen in the punching direction of holding plate 6 and pressure plate 10 are the same, while the surface of the stamp member 7 is lower in this direction.
  • the holding plate 6 has in the region of the four corners holes for receiving screws 14, wherein the respective screw head is recessed on the pressure plate 10 facing side of the holding plate 6 in a recess.
  • the holding plate 6 is connected to a base plate 15 of the punching unit 1.
  • Two mounted in the support plate 6 pin 16 serve to guide the support plate 6 in positioning the support plate 6 with respect to the base plate 15. Accordingly, the base plate 15 is not only provided with threaded holes for screwing the screws 14, but also with receptacles for inserting the pin 16.
  • the holding plate 6 has two receptacles 17 and a web 18 arranged between them.
  • the receptacles 17 pass through the holding plate 6, while the web 18 extends only about half the thickness of the holding plate 6, in the region of the holding plate 6, which faces away from the pressure plate 10.
  • the stamp head 8 on two head portions 19, between which a recess 20 is formed.
  • the respective head portion 19 is inserted into a receptacle 17 associated therewith.
  • the web 18 passes through the recess 20.
  • the punch 5 is positioned in the two coordinate directions perpendicular to the punching largely free of play in the receptacles 17 of the support plate 6 and aligned with respect to the web 18 of the support plate 6 in the region of the punch head 8.
  • the punch 5 In the inserted into the holding plate 6 position of the punch 5, in which the punch 5 passes through the pressure plate 10 with the punch head 8 and the pressure plate 10 is screwed to the support plate 6 and this is bolted to the base plate 15 of the punching unit 1, form the mentioned Components a functional unit.
  • the punch 5 is in the punching direction without play on the pressure plate 10 in the region of the punch shoulder 9 at.
  • the punch 5 can be dismantled or replaced without disassembly of the pressure plate 10 with respect to the support plate 6 is required.
  • the respective means 21 has a introduced into the punch head 8 pocket 22, a screwed into a threaded bore 23 of the support plate 6 clamping screw 24, a in the axial direction of the clamping screw 24 between this and the pocket 22 arranged pressure piece 25 and a retaining screw 26 for the pressure piece 25 on.
  • the retaining screw 26 passes through a bore 27 of the clamping screw 24 and is screwed with a threaded portion 28 in a threaded bore 29 of the pressure piece 25.
  • a conical portion 31 of the pressure piece 25 a conical portion 32 of the bag 22 areally.
  • a screw head 33 of the retaining screw 26 with axial play, illustrated by the gap 34, with respect to the clamping screw 24 is arranged.
  • the bag 22 remote from the end of the pressure piece 25 as a rotationally symmetrical cylinder 35 and the bag 22 facing the end of the pressure piece 25 is formed as a truncated cone 46.
  • a jacket region of the truncated cone 46 has a flat contact surface 36 in the region of its free end for the purpose of making contact with the pocket 22.
  • the pocket 22 is designed as a truncated cone recess tapering in the direction of a bottom 37 of the pocket 22 with a planar contact surface 38 arranged at least in a jacket region of the truncated cone for surface contact with the contact surface 36 of the pressure element 22.
  • the extension of the pocket 22 transversely to the punching direction of the punch 5 or in its withdrawal direction is less than the extension of the pocket 22 perpendicular to this direction. This allows a certain tolerance compensation in transverse extent, thus in the direction of the distance of the two pockets 22 in terms of manufacturing inaccuracies.
  • a surface 39 is also provided on the conical part of the pressure piece 25 in the diametrical area as well.
  • the pressure piece 22 is, in particular the Fig. 7 can be seen in the screwed position of the clamping screw 24 is arranged at a distance from the bottom 37 of the bag.
  • the clamping screw 24 has a screw head 40 with an outer polygon, which is designed as a hexagon. In the screwed-in position of the clamping screw 24, the screw head 40 protrudes beyond the holding plate 6, so that, without considerable space being required next to the punching arrangement 2, a simple actuation of the screw head 40 by means of a screwing tool is possible.
  • the retaining screw 26 has a screw head with an internal polygon, in particular hexagon, wherein the screw head 41 is disposed within the clamping screw 24.
  • Fig. 2 shows the one clamping screw 24 in its screwed position (corresponding to Fig. 7 ) and the other clamping screw 24 in a partially unscrewed position (corresponding Fig. 8 ).
  • two pockets 22 are thus introduced into the punch head 8 and it interacts with the respective pocket 22, a pressure piece 25 and with the pressure piece 25, a clamping screw 24 and a retaining screw 26 together.
  • the pockets 22 are identical, just as the clamping screws 24 are identical, the pressure pieces 25 are formed identically and the retaining screws 26 formed identical.
  • the punch 5 is inserted through the pressure plate 10 and screwed to the holding plate 6.
  • the exact positioning is done by two fits in the X and Y direction. Secured against pulling in the Z direction of the punch 5 by the two means 21.
  • This type of fuse or attachment allows quick change of the punch 5.
  • the respective pressure piece 25 abuts against the end face of the clamping screw 24 and is pressed on the external thread in the, corresponding to the geometry of the pressure piece 25 milled in the punch head 8.
  • the punch shoulder 9 is pulled against the pressure plate 10 by means of the counter-slope in the punch head 8, so that the punch 5 by means of the two provided means 21 with bias against the pressure plate 10, which can then take the punching pressure against the Punching direction can be pressed.
  • the respective clamping screw 24 is released and after contact of the lower part of the screw head 41 of the retaining screw 26 for the pressure piece 25 with the recess in the clamping screw 24, the pressure piece 25 is pulled by means of the retaining screw 26 from the milled recess in the punch head 8 , The pressure piece 25 are at further rotations of the clamping screw 24, the punch 5, specifically the punch head 8 free after the pressure piece 25 is completely moved out of the punch head 8.
  • Another function of the clamping screws 24 is the recording of Abstreifdrucks after punching when the punch 5 leaves the punched sheet in the direction of top dead center. This is done by the contact pressure of the respective head portion 19 to the opposite wall of the receptacle 17 of the holding plate 6 by means of the clamping screws 24 and by the shear resistance of the cross section of the engaged pressure pieces 25th
  • the forces occurring during stripping after punching can be up to 100 kN.
  • clamping screws in this case the two clamping screws 24, allows tight tolerance fields to dominate both in the series arrangement of the clamping screw thread in the holding plate 6, as well as the milled cuts in the punch head 8 by the bevels in the milled recess in the punch head 8 as well as the front part the pressure piece 25 are compensated without a clamping screw 24 is impaired in their function of pressing the punch shoulder 9.
  • the clamping screw 24 is, for example, a screw M 16, in the retaining screw 26 by a screw M 4.
  • the pressure piece for example, has a diameter of 13 mm, wherein the conical portion 31 extends at an angle of 5 ° to the pocket axis.
  • the oval conical pocket 22 has, for example, dimensions of 14 mm / 12 mm at a depth of 6 mm.
  • the second embodiment according to the FIGS. 30 and 31 differs from the first embodiment only in terms of the formation of the pressure piece 25 and means for loose pre-centering of the pressure piece 25. In so far, to avoid repetition, reference is made to the basic comments on the first embodiment.
  • the cylindrical portion 35 of the pressure piece with an axially extending, radially outwardly open groove 42 is provided.
  • the groove 42 is arranged such that the extension of the groove 42 coincides with a symmetry line of the contact surface 36, so that alignment of the groove 42 a corresponding orientation of the contact surface 36 corresponds.
  • a threaded pin 43 cooperates, the Has a pin 44 in the region of its end facing the pressure piece 25.
  • the diameter of the pin 44 is slightly smaller than the width of the groove 42.
  • the threaded pin 43 is screwed into a threaded bore 45 of the retaining plate 6.
  • the threaded pin 43 with pin 44 allows loose pre-centering of the pressure piece 25. This can be ensured in a simple manner that when screwing the clamping screw 24, the pressure piece 25 is aligned exactly in the region of its contact surface 36 with respect to the conical portion 32 in the pocket 22 ,
  • the respective pressure piece 25 is aligned once with its groove 42 and screwed the threaded pin 43 so far that its pin 44 engages in the groove 42 without a tension between the pin 44 and pressure piece 25 takes place.
  • the pressure piece 25 is fixed with play. Neither on the groove 42 nor on the turned-end of the threaded pin 43, thus the pin 44, a burden, since the threading of the surfaces of the pressure piece 25 in the associated pocket 22 in the holding plate 6, the function of pre-centering is met.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (15)

  1. Agencement de poinçonnage (2) comprenant un poinçon (5) et une plaque de fixation (6) pour le poinçon (5), le poinçon (5), lors d'une course de poinçonnage, venant en contact dans la région d'un épaulement de poinçon (9) avec la plaque de fixation (6) ou une plaque de pression (10) disposée entre le poinçon (5) et la plaque de fixation (6), et le poinçon (5) présentant une tête de poinçon (8) et la plaque de fixation (6) présentant un logement (17) pour la tête de poinçon (8), et des moyens (21) étant prévus pour fixer la tête de poinçon (8) sur la plaque de fixation (6), caractérisé en ce que les moyens (21) présentent ce qui suit :
    - une cavité (22) pratiquée dans la tête de poinçon (8),
    - une vis de serrage (24) vissée dans un alésage fileté (23) de la plaque de fixation (6),
    - une pièce de pression (25) disposée dans la direction axiale de la vis de serrage (24) entre celle-ci et la cavité (22),
    - une vis de fixation (26) pour la pièce de pression (25), la vis de fixation (26) traversant un alésage (27) de la vis de serrage (24) et étant vissée avec une portion filetée (28) dans un alésage fileté (29) de la pièce de pression (25),
    une portion conique (31) de la pièce de pression (25) venant en contact à plat avec une portion conique (32) de la cavité (22) sur un côté (30) de la cavité (22) opposé à l'épaulement de poinçon (9) dans une position vissée de la vis de serrage (24), et dans cette position vissée de la vis de serrage (24), l'épaulement de poinçon (9) s'appliquant contre la plaque de fixation (6) ou la plaque de pression (10), et une tête de vis (41) de la vis de fixation (36) étant disposée avec un jeu axial (34) par rapport à la vis de serrage (24).
  2. Agencement de poinçonnage selon la revendication 1, dans lequel l'extrémité de la pièce de pression (25) tournée vers la cavité (22) est réalisée sous forme tronconique et une région d'enveloppe s'y trouvant présente, dans la région de son extrémité libre, une surface de contact aplatie (36) en vue du contact avec la cavité (22).
  3. Agencement de poinçonnage selon la revendication 1 ou 2, dans lequel la cavité (22) est réalisée sous forme d'évidement tronconique se rétrécissant dans la direction d'un fond (27) dans la cavité (22) avec au moins une surface de contact (32) disposée dans une région d'enveloppe du tronc de cône en vue du contact, notamment du contact à plat, avec la pièce de pression (25).
  4. Agencement de poinçonnage selon la revendication 3, dans lequel l'évidement tronconique présente une section transversale ovale.
  5. Agencement de poinçonnage selon l'une quelconque des revendications 1 à 4, dans lequel la pièce de pression (25), dans la position vissée de la vis de serrage (24), est disposée à distance du fond (27) de la cavité (22).
  6. Agencement de poinçonnage selon l'une quelconque des revendications 1 à 5, dans lequel des moyens (42, 44) sont prévus pour orienter la pièce de pression (25) dans un sens de rotation de la pièce de pression (25) par rapport à la portion conique (32) de la cavité (22).
  7. Agencement de poinçonnage selon l'une quelconque des revendications 1 à 6, dans lequel la vis de serrage (24) présente une tête de vis (40) avec un profilé polygonal extérieur, notamment hexagonal, destiné à coopérer avec un outil de vissage.
  8. Agencement de poinçonnage selon l'une quelconque des revendications 1 à 7, dans lequel la tête de vis (40) de la vis de serrage (24) fait saillie au-delà de la plaque de fixation (6) dans la position vissée de la vis de serrage (24).
  9. Agencement de poinçonnage selon l'une quelconque des revendications 1 à 8, dans lequel la vis de fixation (26) présente une tête de vis (41) avec un profilé polygonal intérieur, en particulier hexagonal, la tête de vis (41) étant disposée à l'intérieur de la vis de serrage (24).
  10. Agencement de poinçonnage selon l'une quelconque des revendications 1 à 9, dans lequel la plaque de pression (10) est connectée à la plaque de fixation (6) et est pourvue d'un trou oblong (11) qui traverse la tête de poinçon (8).
  11. Agencement de poinçonnage selon l'une quelconque des revendications 1 à 10, dans lequel deux cavités (22) sont pratiquées dans la tête de poinçon (8), et une pièce de pression (25) coopère avec la cavité respective (22) et une vis de serrage (24) et une vis de fixation (26) coopèrent avec la pièce de pression (25).
  12. Agencement de poinçonnage selon la revendication 11, dans lequel les cavités (22) sont réalisées de manière identique, les vis de serrage (24) sont réalisées de manière identique, les pièces de pression (25) sont réalisées de manière identique et les vis de fixation (26) sont réalisées de manière identique.
  13. Agencement de poinçonnage selon l'une quelconque des revendications 1 à 12, dans lequel la plaque de fixation (6) présente deux logements (17) et la tête de poinçon (8) présente deux portions de tête (19), la portion de tête respective (19) étant enfichée dans un logement (17) et chaque portion de tête (19) présentant une cavité (22).
  14. Agencement de poinçonnage selon l'une quelconque des revendications 1 à 13, dans lequel la tête de poinçon (8) est guidée dans la plaque de fixation (6) dans les directions spatiales disposées perpendiculairement à la direction d'enfichage dans la plaque de fixation (6).
  15. Utilisation de l'agencement de poinçonnage (2) selon l'une quelconque ou plusieurs des revendications 1 à 14, dans une unité de poinçonnage (1), en particulier dans une presse étagée ou "Prog Die", avec une force de raclage par poinçon (5) supérieure à 50 kN, en particulier avec une force de raclage allant jusqu'à 100 kN.
EP13181503.7A 2013-08-23 2013-08-23 Agencement de poinçonnage et son utilisation Not-in-force EP2839897B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP13181503.7A EP2839897B1 (fr) 2013-08-23 2013-08-23 Agencement de poinçonnage et son utilisation
ES13181503.7T ES2549797T3 (es) 2013-08-23 2013-08-23 Conjunto de estampación así como su utilización
PCT/EP2014/002241 WO2015024645A1 (fr) 2013-08-23 2014-08-15 Ensemble de découpage et utilisation dudit ensemble de découpage
US14/913,624 US20160199898A1 (en) 2013-08-23 2014-08-15 Stamping arrangement and use thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13181503.7A EP2839897B1 (fr) 2013-08-23 2013-08-23 Agencement de poinçonnage et son utilisation

Publications (2)

Publication Number Publication Date
EP2839897A1 EP2839897A1 (fr) 2015-02-25
EP2839897B1 true EP2839897B1 (fr) 2015-07-08

Family

ID=49084756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13181503.7A Not-in-force EP2839897B1 (fr) 2013-08-23 2013-08-23 Agencement de poinçonnage et son utilisation

Country Status (4)

Country Link
US (1) US20160199898A1 (fr)
EP (1) EP2839897B1 (fr)
ES (1) ES2549797T3 (fr)
WO (1) WO2015024645A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113245427A (zh) * 2021-07-12 2021-08-13 大连理工江苏研究院有限公司 一种具有清理废屑装置的金属冲压设备及清理方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3494033A (en) * 1968-01-26 1970-02-10 Andrew J Bosco Portable panel punch
US4166403A (en) * 1977-08-10 1979-09-04 Houdaille Industries, Inc. Method of making a rigidly supported molded plastics material punch guide and stripper
GB2038690A (en) * 1978-11-20 1980-07-30 Mercer Nairne & Co Ltd Improved punch assembly
US7578223B2 (en) * 2003-03-10 2009-08-25 Superior Cam, Inc. Modular die press assembly
JP2010089133A (ja) * 2008-10-09 2010-04-22 Takahisa Yamamoto パンチボディの位置を調整できるパンチ金型

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113245427A (zh) * 2021-07-12 2021-08-13 大连理工江苏研究院有限公司 一种具有清理废屑装置的金属冲压设备及清理方法

Also Published As

Publication number Publication date
WO2015024645A1 (fr) 2015-02-26
EP2839897A1 (fr) 2015-02-25
US20160199898A1 (en) 2016-07-14
ES2549797T3 (es) 2015-11-02

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