ATE203937T1 - METHOD AND DEVICE FOR PUNCHING A WORKPIECE - Google Patents

METHOD AND DEVICE FOR PUNCHING A WORKPIECE

Info

Publication number
ATE203937T1
ATE203937T1 AT98120235T AT98120235T ATE203937T1 AT E203937 T1 ATE203937 T1 AT E203937T1 AT 98120235 T AT98120235 T AT 98120235T AT 98120235 T AT98120235 T AT 98120235T AT E203937 T1 ATE203937 T1 AT E203937T1
Authority
AT
Austria
Prior art keywords
workpiece
wall
high pressure
punching
medium
Prior art date
Application number
AT98120235T
Other languages
German (de)
Inventor
Aribert Prof Dr-Ing H Schwager
Klaus Prof Dr-Ing Siegert
Ralf Dipl-Ing Rieger
Original Assignee
Fgu Forschungsgesellschaft Umf
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 Fgu Forschungsgesellschaft Umf filed Critical Fgu Forschungsgesellschaft Umf
Application granted granted Critical
Publication of ATE203937T1 publication Critical patent/ATE203937T1/en

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

The punch (10) advances to cut the wall of the workpiece (8), and returns to free the rotating cutting edge (22) of the tool (2). The movement is superimposed by an oscillating motion, and/or the high pressure engaging on the wall of the workpiece is applied by the pressure medium (D) in the same rhythm as the vibrations. Punching takes place during non/oscillating de/increasing high pressure of the medium.
AT98120235T 1997-10-28 1998-10-28 METHOD AND DEVICE FOR PUNCHING A WORKPIECE ATE203937T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19747607A DE19747607A1 (en) 1997-10-28 1997-10-28 Punching method for hollow workpieces

Publications (1)

Publication Number Publication Date
ATE203937T1 true ATE203937T1 (en) 2001-08-15

Family

ID=7846886

Family Applications (1)

Application Number Title Priority Date Filing Date
AT98120235T ATE203937T1 (en) 1997-10-28 1998-10-28 METHOD AND DEVICE FOR PUNCHING A WORKPIECE

Country Status (4)

Country Link
EP (1) EP0920932B1 (en)
AT (1) ATE203937T1 (en)
DE (2) DE19747607A1 (en)
ES (1) ES2162380T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10360738B4 (en) * 2003-12-23 2006-02-02 Daimlerchrysler Ag Method and forming tool for cutting a hollow profile
DE102015106859B4 (en) * 2015-05-04 2018-06-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for shearing high-strength materials and cutting tool arrangement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4989482A (en) * 1989-11-17 1991-02-05 Ti Corporate Services Limited Method and apparatus for punching a hole in sheet material
DE4035625A1 (en) * 1990-11-09 1992-05-14 Audi Ag METHOD FOR PRODUCING A BREAKTHROUGH IN THE WALL OF A WORKPIECE DESIGNED AS A HOLLOW BODY, AND TOOL FOR CARRYING OUT THE METHOD
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
US5398533A (en) * 1994-05-26 1995-03-21 General Motors Corporation Apparatus for piercing hydroformed part
DE4441192C2 (en) * 1994-11-18 1998-05-20 Schnupp Gmbh & Co Hydraulik Kg Process for hydroforming
DE19506067C1 (en) * 1995-02-22 1996-06-20 Krupp Ag Hoesch Krupp Aperture cutter for pressure moulded items

Also Published As

Publication number Publication date
ES2162380T3 (en) 2001-12-16
DE19747607A1 (en) 1999-05-06
EP0920932A1 (en) 1999-06-09
EP0920932B1 (en) 2001-08-08
DE59801162D1 (en) 2001-09-13

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee