EP1000677A3 - Method for forming a workpiece by application of a high internal pressure - Google Patents

Method for forming a workpiece by application of a high internal pressure Download PDF

Info

Publication number
EP1000677A3
EP1000677A3 EP99120812A EP99120812A EP1000677A3 EP 1000677 A3 EP1000677 A3 EP 1000677A3 EP 99120812 A EP99120812 A EP 99120812A EP 99120812 A EP99120812 A EP 99120812A EP 1000677 A3 EP1000677 A3 EP 1000677A3
Authority
EP
European Patent Office
Prior art keywords
workpiece
forming
application
internal pressure
high internal
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
EP99120812A
Other languages
German (de)
French (fr)
Other versions
EP1000677B1 (en
EP1000677A2 (en
Inventor
Conrad Dipl.-Ing. Oehlerking
Frank Dr. Welsch
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.)
Volkswagen AG
Original Assignee
Volkswagen 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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP1000677A2 publication Critical patent/EP1000677A2/en
Publication of EP1000677A3 publication Critical patent/EP1000677A3/en
Application granted granted Critical
Publication of EP1000677B1 publication Critical patent/EP1000677B1/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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/051—Deforming double-walled bodies
    • 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
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods

Abstract

The deformation process produces the part from a tube with at least one sector of different wall thickness to the rest of it. An assembled tube (10) is used. An outer tube sector (12) is pushed onto an inner tube (11) of uniform wall thickness in order to create the sector of different wall thickness. The parts are bonded to each other by the molding process.
EP99120812A 1998-11-09 1999-10-21 Method for forming a workpiece by application of a high internal pressure Expired - Lifetime EP1000677B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19851492A DE19851492A1 (en) 1998-11-09 1998-11-09 Process for producing a component by means of hydroforming
DE19851492 1998-11-09

Publications (3)

Publication Number Publication Date
EP1000677A2 EP1000677A2 (en) 2000-05-17
EP1000677A3 true EP1000677A3 (en) 2001-04-25
EP1000677B1 EP1000677B1 (en) 2004-02-18

Family

ID=7887103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99120812A Expired - Lifetime EP1000677B1 (en) 1998-11-09 1999-10-21 Method for forming a workpiece by application of a high internal pressure

Country Status (3)

Country Link
EP (1) EP1000677B1 (en)
AT (1) ATE259685T1 (en)
DE (2) DE19851492A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6609301B1 (en) * 1999-09-08 2003-08-26 Magna International Inc. Reinforced hydroformed members and methods of making the same
DE10221880B4 (en) * 2002-05-16 2007-03-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for producing a reinforced pipe, such a pipe and its use
DE10230284B4 (en) * 2002-07-05 2008-10-16 Daimler Ag Method and device for attaching components to circumferentially closed hollow sections
DE10357671A1 (en) * 2003-12-05 2005-07-07 Deutsches Zentrum für Luft- und Raumfahrt e.V. Manufacturing method for a multilayer pipe for guiding a heat transfer fluid and multilayer pipe
DE102009032045A1 (en) * 2009-07-07 2011-01-20 Elb-Form Gmbh Double-walled pipe, process for its preparation and its use
GB2486224B8 (en) * 2010-12-07 2013-06-19 Europ Technical Ct Etc Steering Nsk Deutschland Gmbh Tailored thickness steering tube
DE102011113662A1 (en) * 2011-09-19 2013-03-21 Benteler Automobiltechnik Gmbh Structural component for motor vehicle, has hollow-shaped base profile and reinforcing profiles that are flared together by internal high-pressure impingement
CN113664064A (en) * 2021-08-13 2021-11-19 山东钢铁集团日照有限公司 Method for manufacturing differential thickness pipe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE548576C (en) * 1928-03-01 1933-02-03 Richard Krauss Dipl Ing Process for the production of iron high pressure pipes
EP0015712A1 (en) * 1979-02-28 1980-09-17 Kawasaki Jukogyo Kabushiki Kaisha Method of producing multiple-wall composite pipes
DE3616901A1 (en) * 1985-05-21 1986-11-27 Musashi Seimitsu Kogyo K.K., Toyohashi, Aichi METHOD FOR PRODUCING A BUILD-UP CAMSHAFT
US4759111A (en) * 1987-08-27 1988-07-26 Ti Automotive Division Of Ti Canada Inc. Method of forming reinforced box-selection frame members
DE19511970A1 (en) * 1995-04-18 1996-10-24 Werdau Fahrzeugwerk Forming double=walled tubing for air ducting or car industry

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2709633C3 (en) * 1976-03-26 1981-04-23 Combustion Engineering, Inc., 06095 Windsor, Conn. Device for fastening a sleeve in a pipeline
DE19617219C2 (en) * 1996-04-30 1998-04-30 Daimler Benz Ag Method of making a hollow shaft

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE548576C (en) * 1928-03-01 1933-02-03 Richard Krauss Dipl Ing Process for the production of iron high pressure pipes
EP0015712A1 (en) * 1979-02-28 1980-09-17 Kawasaki Jukogyo Kabushiki Kaisha Method of producing multiple-wall composite pipes
DE3616901A1 (en) * 1985-05-21 1986-11-27 Musashi Seimitsu Kogyo K.K., Toyohashi, Aichi METHOD FOR PRODUCING A BUILD-UP CAMSHAFT
US4759111A (en) * 1987-08-27 1988-07-26 Ti Automotive Division Of Ti Canada Inc. Method of forming reinforced box-selection frame members
DE19511970A1 (en) * 1995-04-18 1996-10-24 Werdau Fahrzeugwerk Forming double=walled tubing for air ducting or car industry

Also Published As

Publication number Publication date
ATE259685T1 (en) 2004-03-15
EP1000677B1 (en) 2004-02-18
EP1000677A2 (en) 2000-05-17
DE19851492A1 (en) 2000-05-11
DE59908570D1 (en) 2004-03-25

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