EP0940200A3 - Method and device for removing a slug from an internal high-pressure forming tool - Google Patents

Method and device for removing a slug from an internal high-pressure forming tool Download PDF

Info

Publication number
EP0940200A3
EP0940200A3 EP19990101944 EP99101944A EP0940200A3 EP 0940200 A3 EP0940200 A3 EP 0940200A3 EP 19990101944 EP19990101944 EP 19990101944 EP 99101944 A EP99101944 A EP 99101944A EP 0940200 A3 EP0940200 A3 EP 0940200A3
Authority
EP
European Patent Office
Prior art keywords
slug
tool
plunger
hydroforming
hydroforming 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.)
Granted
Application number
EP19990101944
Other languages
German (de)
French (fr)
Other versions
EP0940200A2 (en
EP0940200B1 (en
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.)
Daimler 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/en
Publication of EP0940200A3 publication Critical patent/EP0940200A3/en
Application granted granted Critical
Publication of EP0940200B1 publication Critical patent/EP0940200B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Landscapes

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

Abstract

A method and a device for removal of a slug separated from a hollow profile by means of a fluidic internal pressure from a hydroforming tool. The slug is separated from the hollow profile from the inside to the outside by the retraction of a plunger integrated into the hydroforming tool and clearing a slug channel when retracted, and is forced out of the die cavity of the hydroforming tool into the slug channel. Then, with the hollow profile in a zero-pressure state, the slug, which after it is pressed in abuts the end of the plunger, is removed by a removal tool from the hydroforming tool. In order to remove slugs from the hydroforming tool in any desired position of the slug channel that leads into the die of the hydroforming tool, in which the slug is initially received after perforation, in simple fashion, the slug is held at the end of the plunger during its stay in the slug channel by an adhesion means connected with the plunger. Then, after the hydroforming tool is opened and the finished hollow profile is removed, the slug, while continuing to adhere to the end of the plunger, is guided by means of the plunger and of the removal tool designed with adhesion means into the open die cavity. The slug and the area of the removal tool on which the adhesion means acts assume a relative position opposite one another, after which the slug is separated from the plunger and then adheres to the removal tool, by means of which the adhering slug is then removed from the hydroforming tool.
EP19990101944 1998-03-05 1999-01-30 Method and device for removing a slug from an internal high-pressure forming tool Expired - Lifetime EP0940200B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19809519 1998-03-05
DE19809519A DE19809519C1 (en) 1998-03-05 1998-03-05 Method of removal of core from pressure molded hollow workpiece

Publications (3)

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

Family

ID=7859862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990101944 Expired - Lifetime EP0940200B1 (en) 1998-03-05 1999-01-30 Method and device for removing a slug from an internal high-pressure forming tool

Country Status (6)

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

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0995513B1 (en) * 1998-10-23 2006-02-22 Alcan Technology & Management AG Method and device for removing a slug from an internal high-pressure forming tool
DE19859925C2 (en) * 1998-12-23 2002-12-05 Forschungsges Umformtechnik Method and device for removing slugs
EP1274523B1 (en) * 2000-02-22 2004-05-12 Cosma International Inc. Hydroforming flush system
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
US7552535B2 (en) 2002-11-12 2009-06-30 Magna International Inc. Method of forming hydroformed member with opening
US7249480B2 (en) * 2004-09-24 2007-07-31 General Motors Corporation In-die hydropiercing device for piercing holes in hydroformed parts
DE102005033493B3 (en) * 2005-07-19 2006-09-28 Daimlerchrysler Ag Mold with a high internal pressure, where holes are punched through a hollow profile, flushes the mold zone with a fluid at atmospheric pressure to remove the hole disks with a sensor to count them according to the number of holes
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 (en) * 2006-04-29 2007-09-10 현대자동차주식회사 Hole piercing apparatus and method for tube of hydroforming
DE102007017420B4 (en) * 2007-04-13 2016-11-17 Daimler Ag Method and device for producing a hollow profile
KR20120052377A (en) * 2009-08-05 2012-05-23 지아이. 디아이. 메카니카 에스.피.에이. A method for obtaining an opening in a hollow-body member, and a hollow-body member provided with one or more openings obtained with said method
CN102172732B (en) * 2011-01-29 2013-01-16 昆山联德精密机械有限公司 Progressive die rounding and core-pulling mechanism
US9067252B2 (en) * 2013-10-30 2015-06-30 Caterpillar Inc. System and method of forming hole in blank during hydroforming process
CN106040791B (en) * 2016-07-29 2018-01-23 成都宏明双新科技股份有限公司 The mechanism and circle circle method of circle are longitudinally enclosed in a kind of progressive die using floating ladder core rod

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5398533A (en) * 1994-05-26 1995-03-21 General Motors Corporation Apparatus for piercing hydroformed part

Family Cites Families (4)

* 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 (en) * 1993-07-02 1999-07-15 Schaefer Hydroforming Gmbh Method and device for cutting out a section of a wall of a hollow body produced by the hydroforming process
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5398533A (en) * 1994-05-26 1995-03-21 General Motors Corporation Apparatus for piercing hydroformed part

Also Published As

Publication number Publication date
DE59900203D1 (en) 2001-09-27
US6006566A (en) 1999-12-28
ATE204520T1 (en) 2001-09-15
ES2162711T3 (en) 2002-01-01
DE19809519C1 (en) 1999-07-01
CA2264491A1 (en) 1999-09-05
EP0940200A2 (en) 1999-09-08
EP0940200B1 (en) 2001-08-22

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