EP0940200B1 - Méthode et appareil pour l'enlèvement d'une pièce découpée d'un outil de formage par haute pression interne - Google Patents

Méthode et appareil pour l'enlèvement d'une pièce découpée d'un outil de formage par haute pression interne Download PDF

Info

Publication number
EP0940200B1
EP0940200B1 EP19990101944 EP99101944A EP0940200B1 EP 0940200 B1 EP0940200 B1 EP 0940200B1 EP 19990101944 EP19990101944 EP 19990101944 EP 99101944 A EP99101944 A EP 99101944A EP 0940200 B1 EP0940200 B1 EP 0940200B1
Authority
EP
European Patent Office
Prior art keywords
die
hole punch
tool
slug
removal tool
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.)
Expired - Lifetime
Application number
EP19990101944
Other languages
German (de)
English (en)
Other versions
EP0940200A3 (fr
EP0940200A2 (fr
Inventor
Thomas Hülsberg
Ralf Pünjer
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP0940200A2 publication Critical patent/EP0940200A2/fr
Publication of EP0940200A3 publication Critical patent/EP0940200A3/fr
Application granted granted Critical
Publication of EP0940200B1 publication Critical patent/EP0940200B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/003—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass in punching machines or punching 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
    • B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49805—Shaping by direct application of fluent pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0596—Cutting wall of hollow work

Definitions

  • the invention relates to a method for removing a slug from an internal high pressure forming tool according to the preamble of claim 1 and a device for performing of the method according to the preamble of the claim 8th.
  • a generic method or a generic device is known from US 5,398,533.
  • the device there includes an internal high pressure forming tool that runs along the extension of the hollow profile inserted into the engraving is.
  • On the underlying flat surface of the cross section trapezoidal engraving is arranged in the recess an insert for punching the hollow profile under high internal pressure is introduced.
  • the insert closes flush with the level Surface of the engraving and has an axial bore in the Stamp is performed.
  • the bore has at its mouth a ring-shaped cutting edge for engraving. The stamp closes the mouth opening during the shaping of the hollow profile the hole.
  • the stamp withdrawn relatively suddenly, after which under the influence of internal high pressure still prevailing and due to the lack of Support of the hollow profile by the stamp the hollow profile is pressed against the cutting edge of the hole, whereupon this is cut out a slug, which is further in the perforated channel formed by the hole is pressed. Then the fluid pressure is released and the stamp wieter lowered until the one on the face of the stamp Perforated slug at the level of the surroundings of the forming tool leading transverse channel to the hole-blanket channel, after which a removal tool designed as a slide the perforated slug out of the perforated slug channel through the transverse channel promoted to the outside.
  • the stamp is otherwise mechanical by moving a ramp across the stamp which he is slidably arranged, driven by lifting.
  • a disadvantage of the described embodiment of the perforated slug disposal, i.e. removal of the slug from the forming tool, is that they only occur when they are almost vertically down Perforations can be used, otherwise the hole-slug in the perforated channel of the use of the return movement cannot follow the stamp and therefore not from the slide can be conveyed out of the forming tool. In particular this concerns the execution of several perforations on the same Hollow profile in different circumferential areas. At a Release pressure only after reaching the height of the cross channel until then it falls to the face of the stamp due to internal high pressure pressed slugs from the stamp and on the underside the cutting edge of the insert.
  • the invention has for its object a generic To further develop a method and a generic device, that removing perforated slugs from the forming tool out of any position in the engraving of the Forming tool leading perforated slug channel in which the perforated slug after the perforation is initially recorded, in simpler Way becomes possible.
  • the task is according to the invention by the features of the claim 1 regarding the procedure and the characteristics of claim 8 solved with respect to the device.
  • the perforated slug can at any time i.e. both under the influence of high pressure as well in a relaxed state of the pressure fluid captive on the stamp are kept, the course and location of the perforated channel relative to the engraving of the forming tool for the It is completely irrelevant to hold the perforated slug on the stamp.
  • the adhesive property of the removal tool of the invention can that of the stamp pushed into the mold space and on its face still without falling off sticky slugs in the axial Push the removal tool into the mold space - no matter in the circumferential position of the slug - from the stamp detached and transferable to the removal tool, which then together with the slug from the forming tool is brought out.
  • the adhesive area of the removal tool can be arranged on all sides in the circumferential direction be, which causes the transition of the hole blank from the stamp on the removal tool after a simple axial movement can.
  • the slug can be adapted to the axial position of the stamp and thus the slug also several axially spaced Areas are provided, which are also on all sides in the circumferential direction act adherent.
  • the adhesive area can also on the other hand, be locally concentrated, so that if necessary after the axial insertion of the removal tool around its own body Axis must be rotated with its sticking area to face the slug.
  • FIG. 1 shows an internal high-pressure forming tool 1, in the mold space 2 enclosed by its engraving 10 Hollow profile 3 is inserted.
  • the forming tool 1 is along the Extension of the hollow profile 3 in an upper tool 4 and Lower tool 20 divided into two.
  • the upper tool 4 there is a perforated channel 5 formed in which a stamp 6 can be moved is guided and its diameter corresponds to that of the channel 5.
  • the stamp 6 closes flush with its end face 7 in FIG. 1 with the contour of the mold space 2.
  • a stamp runs in 6 axially continuous channel 8, the side facing away from the molding space 9 is connected to the suction side of a pump and in the Face 7 of the stamp 6 opens into the mold space 2.
  • Fig. 1 for producing a perforated This becomes hollow profile by applying an internal high pressure on all sides according to the direction of the arrow until it engages with the engraving 10 expanded.
  • the stamp is now under continued high pressure 6 withdrawn according to FIG. 2 in the perforated channel 5, whereby this is released.
  • This is due to the lack of support of the stamp 6 on the one hand and by the hydraulic internal high pressure on the other hand, the hollow profile 3 in the area of the mouth opening 11 of the perforated nozzle channel 5 out of the molding space 2 pressed into the channel 5, by pulling the Hollow profile material over the opening edge 12 of the mouth opening 11 a slug 13 from the hollow profile 3 from the inside to is sheared outside, which then up to the plant on the face of the stamp 7 pressed further into the perforated channel 5 becomes.
  • the slug 13 is thus from the area of the molding space 2 separated.
  • the opening edge 12 is advantageous to design as a cutting edge, so that the slug 13 clean from the hollow section 3rd is separated out.
  • the hollow section 3 is also conceivable Inward movement of the stamp 6 in the mold space 2 under counteracting High pressure to stamp a predetermined breaking point what continues to favor the separation of the slug 13 with an essentially smooth slug edge.
  • the pump is started, which causes over the channel 8 affects a suction pressure on the slug 13, the thereby adhering to the stamp face 7.
  • the suction pressure or of the hole 13 against the face 7 of the stamp 6 resulting negative pressure forms the adhesive of the stamp 6. It is beneficial to have the suction or vacuum before To build up the punching process so that the slug 13 is already one early date of the procedure on the stamp face 7 and thus a possible drop in pressure and escape of high pressure fluid avoided via the channel 8 of the stamp 6 becomes.
  • the vacuum supports the separation of the slug 13 on the side of the hollow profile facing away from the mold space 3rd
  • a removal tool designed as a rod is then used 14 for the slug 13 in the open mold space 2 introduced by means of a robot or manually. It can however, also the removal tool 14 first in the open mold space 2 are moved and only then the stamp 6 with the Perforated slugs 13 are inserted into the open mold space 2.
  • the Removal tool 14 has a central axial channel 15, from the radial transverse channels 16 (Fig. 5b).
  • the axial channel 15 is connected to the suction side of a pump, which is in operation in a similar way to the stamp 6 a suction pressure builds up.
  • the removal tool 14 is axially in the mold space 2 positioned that the area with the orifices 17 of the Cross channels 16 of the opening 11 of the perforated nozzle channel 5 in about opposite.
  • the removal tool 14 if necessary in addition to axial positioning, also around its body axis must be rotated until the mouth 17 of the Transverse channel 16 of the mouth opening 11 of the perforated nozzle channel 5 is opposite.
  • Several thin channels 16 have the advantage that the suction of the pump via the axial channel 15 is a relatively large circumferential area of the removal tool 14 extends and thus created a circumferentially extended detention area becomes. Furthermore, the thin channels 16 ensure good adhesion for the slug 13 because with this configuration the suction pressure becomes high and therefore a good suction effect is achieved.
  • training is one only channel with a large cross-sectional area 16 simple, but this configuration is less Has suction and only a limited effective adhesive surface, otherwise the slug 13 in the transverse channel 16 falls into it.
  • the pump now develops its suction power.
  • the with the stamp 6 connected pump can be switched off, so that the adhesive force on the stamp is eliminated and only the suction force acts on the slug 13 via the removal tool 14, which closes most of the orifices 17 and due to the negative pressure building up on its underside 18 adheres to the outside 19 of the removal tool 14.
  • the pump of the removal tool 14 a has greater suction than that of the stamp 6, so that the liability of the perforated slug 13 on the stamp 6 is lifted and this will become detached. Accordingly, this is from Removal tool 14 is tightened and remains on the tool 14 stick (Fig. 7a, b).
  • the stamp 6 and the removal tool 14 in rod form each form as an electromagnet. It is natural here mandatory that the hollow profile 3 and thus the perforated slug 13 made of a magnetic or magnetizable material consist. It is favorable for process security that Internal high-pressure forming tool 1 then from a non-magnetic Material exists.
  • the non-magnetic design of the Forming tool 1 can also be a shielding bushing in the perforated channel 5 be arranged, the force field of the stamp 6th keeps away from the surrounding magnetic forming tool 1.
  • the procedure with the electromagnet serving as an adhesive largely corresponds to that of the above and from the first embodiment shown in the figures, with the field of an electromagnet just as simple can be switched on like the pump for generating negative pressure.
  • the slug 13 is attracted by the electromagnetic stamp 6 and remains there until it is replaced by the stronger one magnetic field of the electromagnetic extraction tool 14 be liable. It is advantageous when using electromagnets that the removal tool 14 has no defined axial relative position to take punch 6 or slug 13, because the attraction acts over its entire axial extent and is not limited to mouth openings 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Cleaning In General (AREA)
  • Details Of Cutting Devices (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Adornments (AREA)

Claims (13)

  1. Procédé pour enlever d'un outil de reformage sous haute pression intérieure (1) une pastille de perçage (13), séparée d'un profilé creux (3) par utilisation d'une haute pression intérieure fluidique, la pastille de perçage (13) étant séparée du profilé creux (3) de l'intérieur vers l'extérieur, avec rétraction d'un poinçon (6) intégré dans l'outil de reformage (1), libérant un canal à pastilles de perçage (5) lors de la rétraction, et la pastille de perçage issue de l'espace de formage de l'outil de reformage (1) étant poussée à l'intérieur du canal à pastilles de perçage (5), la pastille de perçage (13) étant enlevée hors de l'outil de reformage (1) au moyen d'un outil de prélèvement (14), en étant plaquée sur la face frontale (7) du poinçon (6), après l'enfoncement, alors que le profilé (3) est à l'état sans pression,
    caractérisé en ce que,
    pendant son immobilisation dans le canal à pastilles de perçage (5), la pastille de perçage (13) est maintenue sur la face frontale de poinçon (7) à l'aide d'un moyen d'adhésion relié au poinçon (6), et en ce que, après ouverture de l'outil de reformage (1) et prélèvement du profilé creux (3) dont le formage est achevé, la pastille de perçage (13), restant en adhésion sur la face frontale de poinçon (7), est passée dans l'espace de formage (2) ouvert au moyen du poinçon (6) et l'outil de prélèvement (14), réalisé avec un moyen d'adhésion, est introduit dans cet espace de formage (2) ouvert, la pastille de perçage (13) et la zone de l'outil de prélèvement (14) dans laquelle agit le moyen d'adhésion prenant mutuellement une position relative de vis-à-vis, suite à quoi la pastille de perçage (13) est désolidarisée du poinçon (6) et mise en adhésion ensuite sur l'outil de prélèvement (14), au moyen duquel la pastille de perçage (13) est ensuite extraite de l'outil de reformage (1).
  2. Procédé selon la revendication 1,
    caractérisé en ce que,
    la pastille de perçage (13) ayant été préalablement mise en adhésion sur le poinçon (6) est attirée par l'outil de prélèvement (14), avec une force d'attraction agissant plus fortement que l'adhésion de la pastille de perçage (13) sur le poinçon (6), en désolidarisant la pastille de perçage (13) du poinçon (6) puis en la mettant en adhésion sur l'outil de prélèvement (14).
  3. Procédé selon la revendication 2,
    caractérisé en ce que,
    après le positionnement du poinçon (6) dans l'espace de formage (2), la force d'adhésion du moyen d'adhésion, agissant sur la pastille de perçage (13), du poinçon (6) est supprimée et la force. d'adhésion de l'outil de prélèvement (14) est simultanément établie.
  4. Procédé selon la revendication 1,
    caractérisé en ce que
    la pastille de perçage (13) est aspirée par une dépression constituant le moyen d'adhésion fourni par l'intermédiaire du poinçon (6), dépression à l'aide de laquelle la pastille de perçage (13) est maintenue sur le poinçon (6) jusqu'à sa désolidarisation.
  5. Procédé selon la revendication 1,
    caractérisé en ce que,
    dans le cas d'une pastille de perçage (13) constituée d'un matériau magnétique, celle-ci est attirée par un électro-aimant agissant en tant que moyen d'adhésion par l'intermédiaire du poinçon (6), électro-aimant au moyen d'adhésion duquel la pastille de perçage (13) est maintenue sur le poinçon (6) jusqu'à sa désolidarisation.
  6. Procédé selon la revendication 1,
    caractérisé en ce que
    l'effet d'adhésion de l'outil de prélèvement (14) est généré de façon électromagnétique.
  7. Procédé selon la revendication 1,
    caractérisé en ce que
    l'effet d'adhésion de l'outil de prélèvement (14) est généré par une dépression agissant sur ce qui sera ultérieurement le site d'adhésion de la pastille de perçage (13).
  8. Dispositif pour enlever une pastille de perçage (13), séparée d'un profilé creux (3) au moyen d'une haute pression intérieure fluidique, hors d'un outil de reformage sous haute pression intérieure (1), divisé dans la direction longitudinale du profilé creux (3), avec un poinçon (6) intégré dans l'oütil de reformage (1) et guidé de façon déplaçable dans un canal à pastilles de perçage (5) réalisé dans celui-ci, poinçon en face frontale (3) duquel est plaquée la pastille de perçage qui est séparée et extraite vers l'extérieur au moyen de la haute pression intérieure, par la rétraction du poinçon (6) hors du profilé creux (3), et avec un outil de prélèvement (14) pour enlever la pastille de perçage (13), plaquée sur le poinçon (6), hors de l'outil de reformage (1), lorsque le profilé creux (3) est sans pression, pour mettre en oeuvre le procédé selon la revendication 1,
    caractérisé en ce que
    le poinçon (6) est relié à un moyen d'adhésion au moyen duquel la pastille de perçage (13) est maintenue sur la face frontale de poinçon (7), en ce que le poinçon (6) pénètre dans l'espace libre (2) ouvert de l'outil de reformage (1), lorsque le reformage a été achevé et que l'outil de reformage (1) est ouvert, sans profilé creux, et en ce que l'outil de prélèvement (1) est susceptible d'être introduit dans l'espace de formage (2) ouvert et présente un moyen d'adhésion, au moyen duquel, lorsque l'outil de prélèvement (14) est, dans l'espace de formage (2) ouvert, en une position de vis-à-vis de la face frontale de poinçon (7) du poinçon (6) introduit, la pastille de perçage (13) est susceptible d'être captée par l'outil de prélèvement (14), en étant assurée de ne pas être perdue.
  9. Dispositif selon la revendication 8,
    caractérisé en ce que
    l'outil de prélèvement (14) est réalisé sous la forme de barre, présentant un canal axial (15) central, partant du au moins un canal transversal (16) radial, l'ouverture d'embouchure (17) du canal transversal (16), dans la position d'utilisation de l'outil de prélèvement (14), étant placée, dans l'espace de formage (2) ouvert, en face de la face frontale de poinçon (7), et en ce que le canal axial (15) est relié au côté aspiration d'une pompe, la dépression, s'établissant dans l'outil de prélèvement (14) lorsque la pompe est en fonctionnement, formant le moyen d'adhésion de l'outil de prélèvement (14).
  10. Dispositif selon la revendication 8,
    caractérisé en ce que,
    dans le cas où le profilé creux est réalisé en matériau magnétique, l'outil de prélèvement (14) est réalisé sous forme d'électroaimant en forme de barre, et en ce que l'outil de reformage sous haute pression intérieure (1) est constitué d'un matériau non magnétique.
  11. Dispositif selon la revendication 8,
    caractérisé en ce que
    dans le poinçon (6) est disposé un canal continu axialement, qui, du côté (9) opposé à l'espace de formage, est relié au côté aspiration d'une pompe, la pression d'aspiration ou dépression, produite lorsque la pompe est en fonctionnement, formant le moyen d'adhésion du poinçon (6).
  12. Dispositif selon la revendication 8,
    caractérisé en ce que,
    dans le cas d'un profilé creux réalisé en matériau magnétique, le poinçon (6) est réalisé sous la forme d'électroaimant et en ce que l'outil de reformage sous haute pression intérieure (1) est constitué d'un matériau non magnétique.
  13. Dispositif selon la revendication 8,
    caractérisé en ce que,
    dans le cas où le profilé creux est réalisé en un matériau magnétique, le poinçon (6) est réalisé sous la forme d'un électroaimant, dont le champ de force est écranté par rapport à l'outil de reformage (1) environnant.
EP19990101944 1998-03-05 1999-01-30 Méthode et appareil pour l'enlèvement d'une pièce découpée d'un outil de formage par haute pression interne Expired - Lifetime EP0940200B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19809519 1998-03-05
DE19809519A DE19809519C1 (de) 1998-03-05 1998-03-05 Verfahren und Vorrichtung zum Entfernen eines Lochbutzens aus einem Innenhochdruck-Umformwerkzeug

Publications (3)

Publication Number Publication Date
EP0940200A2 EP0940200A2 (fr) 1999-09-08
EP0940200A3 EP0940200A3 (fr) 2000-05-03
EP0940200B1 true EP0940200B1 (fr) 2001-08-22

Family

ID=7859862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990101944 Expired - Lifetime EP0940200B1 (fr) 1998-03-05 1999-01-30 Méthode et appareil pour l'enlèvement d'une pièce découpée d'un outil de formage par haute pression interne

Country Status (6)

Country Link
US (1) US6006566A (fr)
EP (1) EP0940200B1 (fr)
AT (1) ATE204520T1 (fr)
CA (1) CA2264491A1 (fr)
DE (2) DE19809519C1 (fr)
ES (1) ES2162711T3 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59913144D1 (de) * 1998-10-23 2006-04-27 Alcan Tech & Man Ag Verfahren und Vorrichtung zum Entnehmen eines Lochbutzens aus einem Innenhochdruck-Umformwerkzeug
DE19859925C2 (de) * 1998-12-23 2002-12-05 Forschungsges Umformtechnik Verfahren und Vorrichtung zum Entfernen von Lochbutzen
EP1274523B1 (fr) * 2000-02-22 2004-05-12 Cosma International Inc. Systeme d'hydroformage avec rincage
US6662611B2 (en) 2000-02-22 2003-12-16 Magna International, Inc. Hydroforming flush system
US6401507B1 (en) * 2001-11-30 2002-06-11 General Motors Corporation Hydroforming, in-die hydropiercing and slug-ejecting method and apparatus
US6591648B1 (en) * 2002-06-24 2003-07-15 Greenville Tool & Die Company Method of stamping and piercing a tube
EP1560669B1 (fr) * 2002-11-12 2008-07-02 Magna International Inc. Procede de realisation d'article hydroforme avec ouverture
US7249480B2 (en) * 2004-09-24 2007-07-31 General Motors Corporation In-die hydropiercing device for piercing holes in hydroformed parts
DE102005033493B3 (de) * 2005-07-19 2006-09-28 Daimlerchrysler Ag Verfahren und Vorrichtung zum Entfernen eines aus einem Hohlprofil herausgetrennten Lochbutzens
US7104099B1 (en) * 2005-08-16 2006-09-12 Gm Global Technology Operations, Inc. Center support punch assembly for hydroforming die
US7111482B1 (en) * 2005-09-13 2006-09-26 Gm Global Technology Operations, Inc. Punch assembly for hydroforming die
KR100757595B1 (ko) * 2006-04-29 2007-09-10 현대자동차주식회사 하이드로포밍용 튜브의 피어싱 장치 및 방법
DE102007017420B4 (de) * 2007-04-13 2016-11-17 Daimler Ag Verfahren und Vorrichtung zur Herstellung eines Hohlprofils
BR112012002455B1 (pt) * 2009-08-05 2019-11-05 Gi Di Mecc S P A método para obter uma abertura em um membro de corpo oco e equipamento para implementação do método
CN102172732B (zh) * 2011-01-29 2013-01-16 昆山联德精密机械有限公司 级进模卷圆抽芯机构
US9067252B2 (en) * 2013-10-30 2015-06-30 Caterpillar Inc. System and method of forming hole in blank during hydroforming process
CN106040791B (zh) * 2016-07-29 2018-01-23 成都宏明双新科技股份有限公司 一种级进模内利用浮动阶梯模芯纵向圈圆的机构及圈圆方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991456A (en) * 1972-04-10 1976-11-16 Stanray Corporation Method of forming valve bodies
US4989482A (en) * 1989-11-17 1991-02-05 Ti Corporate Services Limited Method and apparatus for punching a hole in sheet material
DE4322063C2 (de) * 1993-07-02 1999-07-15 Schaefer Hydroforming Gmbh Verfahren und Vorrichtung zum Ausschneiden eines Ausschnittes aus einer Wandung eines nach dem Innenhochdruck-Umformverfahren hergestellten Hohlkörpers
US5398533A (en) * 1994-05-26 1995-03-21 General Motors Corporation Apparatus for piercing hydroformed part
US5816089A (en) * 1996-11-26 1998-10-06 Dana Corporation Hydroforming apparatus having in-die hole piercing capabilities and a slug ejection system using hydroforming fluid

Also Published As

Publication number Publication date
DE59900203D1 (de) 2001-09-27
ATE204520T1 (de) 2001-09-15
US6006566A (en) 1999-12-28
CA2264491A1 (fr) 1999-09-05
ES2162711T3 (es) 2002-01-01
DE19809519C1 (de) 1999-07-01
EP0940200A3 (fr) 2000-05-03
EP0940200A2 (fr) 1999-09-08

Similar Documents

Publication Publication Date Title
EP0940200B1 (fr) Méthode et appareil pour l'enlèvement d'une pièce découpée d'un outil de formage par haute pression interne
DE60002726T2 (de) Verfahren und vorrichtung zum formen von gegenüberliegenden löchern in einer seitenwand eines rohrförmigen werkstückes
EP2140954A1 (fr) Procédé et dispositif de fabrication de parties coupantes fines d'une bande de matériau
DE3446978A1 (de) Verfahren und vorrichtung zum befestigen eines hohlkoerperteils an einer tafel
DE19752171A1 (de) Hydroforming-Vorrichtung
DE69620854T2 (de) Vorrichtung zum schrittweise Zuführen sowie Lochen von blattförmigen Materialien
DE19639122A1 (de) Vorrichtung zum Klemmen und Bohren
DE19647962C1 (de) Verfahren und Einrichtung zum Herstellen von Löchern am Umfang eines Hohlprofiles
DE2727445C2 (de) Verfahren und Vorrichtung zum Ausschneiden und/oder Lochen von Werkstücken aus metallischen Flachwerkstoffen
DE19855919A1 (de) Preßvorrichtung
DE102016204209B4 (de) Einsetzvorrichtung und Verfahren zum Einsetzen eines Rondenrings in einen Außenring einer Ronde
CH655024A5 (de) Einrichtung zum herstellen von durchzuegen an aus blech bestehenden werkstuecken auf einer schneidpresse.
EP2335841A1 (fr) Procédé de fabrication de pièces pliées et outil correspondant
DE102011103745B4 (de) Verfahren und Preßwerkzeug zum isostatischen Pressen
DE3423543A1 (de) Presse und verfahren zur herstellung derselben
DE2637085C3 (de) Vorrichtung zum Ausstoßen des Stanzabfalles oder Stanzteils mittels Druckluft
DE102006053223B3 (de) Loch- und Durchzugsstempel
EP1307316B1 (fr) Dispositif d'element fonctionnel, outil destine a etre employe avec le dispositif d'element fonctionnel et procede destine a inserer le dispositif d'element fonctionnel dans un composant
EP2093030B1 (fr) Procédé et dispositif destinés au retrait de déchets d'une presse
EP0995513B1 (fr) Porcédé et dispositif pour l'enlèvement d'une pièce découpée d'un outil de formage par haute pression interne
DE19911125C1 (de) Verfahren und Vorrichtung zum Trennen oder Lochen eines Werkstücks unter Einfluß eines unter Hochdruck stehenden Druckmediums
DE2803725A1 (de) Anbringvorrichtung fuer ein befestigungselement
DE10260979A1 (de) Vorrichtung zum Herstellen eines Werkstückes aus einem metallischen Rohling mit zumindest einem in den Rohling eingebrachten Niet
DE19859925C2 (de) Verfahren und Vorrichtung zum Entfernen von Lochbutzen
DE2631818A1 (de) Perforiereinrichtung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT DE ES FR GB IT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20000401

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

AKX Designation fees paid

Free format text: AT DE ES FR GB IT SE

17Q First examination report despatched

Effective date: 20001215

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE ES FR GB IT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20010822

REF Corresponds to:

Ref document number: 204520

Country of ref document: AT

Date of ref document: 20010915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59900203

Country of ref document: DE

Date of ref document: 20010927

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20011005

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20011122

ET Fr: translation filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2162711

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020130

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20070110

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20070119

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20070130

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20070111

Year of fee payment: 9

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20080130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20081029

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080130

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20080131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080131

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

Ref country code: FR

Ref legal event code: CA