EP0995512A3 - Method and device for sealing a hollow profile or similar workpiece in high pressure forming - Google Patents

Method and device for sealing a hollow profile or similar workpiece in high pressure forming Download PDF

Info

Publication number
EP0995512A3
EP0995512A3 EP99810889A EP99810889A EP0995512A3 EP 0995512 A3 EP0995512 A3 EP 0995512A3 EP 99810889 A EP99810889 A EP 99810889A EP 99810889 A EP99810889 A EP 99810889A EP 0995512 A3 EP0995512 A3 EP 0995512A3
Authority
EP
European Patent Office
Prior art keywords
punch
sealing
working fluid
cavity
high pressure
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
EP99810889A
Other languages
German (de)
French (fr)
Other versions
EP0995512A2 (en
EP0995512B1 (en
Inventor
Jörg Hein
Aslan Göger
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.)
3A Composites International AG
Original Assignee
Alusuisse Technology and Management Ltd
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
Priority claimed from DE19909949A external-priority patent/DE19909949B4/en
Application filed by Alusuisse Technology and Management Ltd filed Critical Alusuisse Technology and Management Ltd
Publication of EP0995512A2 publication Critical patent/EP0995512A2/en
Publication of EP0995512A3 publication Critical patent/EP0995512A3/en
Application granted granted Critical
Publication of EP0995512B1 publication Critical patent/EP0995512B1/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
    • B21D26/045—Closing or sealing means

Abstract

The deformation process comprises deforming the workpiece (10) with working fluid flowing through its cavity (12) by a punch (16). At least one sealing element (26) is taken outward radially through the working fluid and is laid against a joint (36) between the strip and the punch. The working fluid is taken out of the cavity for the sealing element and into the strip cavity. An Independent claim is also included for a device to implement the process, comprising a punch extension made as a separate part, joined to the head part of the punch which forms the radial shoulder surface. The annular groove may project in an axially parallel direction part of the way into the shoulder surface.
EP99810889A 1998-10-08 1999-10-01 Method and device for sealing a hollow profile or similar workpiece in high pressure forming Expired - Lifetime EP0995512B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19846467 1998-10-08
DE19846467 1998-10-08
DE19909949 1999-03-06
DE19909949A DE19909949B4 (en) 1998-10-08 1999-03-06 Device and method for reshaping a hollow profile or the like workpiece by means of hydroforming

Publications (3)

Publication Number Publication Date
EP0995512A2 EP0995512A2 (en) 2000-04-26
EP0995512A3 true EP0995512A3 (en) 2001-04-11
EP0995512B1 EP0995512B1 (en) 2003-10-22

Family

ID=26049387

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810889A Expired - Lifetime EP0995512B1 (en) 1998-10-08 1999-10-01 Method and device for sealing a hollow profile or similar workpiece in high pressure forming

Country Status (3)

Country Link
EP (1) EP0995512B1 (en)
AT (1) ATE252429T1 (en)
ES (1) ES2209372T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10056610A1 (en) * 2000-11-15 2002-05-23 Schuler Hydroforming Gmbh & Co High-pressure bulge-forming apparatus for producing complex-shaped hollow articles, has fasteners that releasably secure heads on stems of actuators aligned with cavity ends of multipart die assembly
DE10134321C1 (en) * 2001-07-14 2002-07-25 Benteler Automobiltechnik Gmbh Sealing device, for sealing end sector of tubular workpiece, has effective piston area of compression piston in chamber greater than cross section area inside end of workpiece
DE10311180B3 (en) * 2003-03-12 2004-02-12 Forschungsgesellschaft Umformtechnik Mbh Internal high-pressure deformation device for sealing ends of tubes has tube end fitted between seal body and clamping insert
CN114618933A (en) * 2022-03-01 2022-06-14 哈尔滨工业大学（威海） Combined type inflation sealing method and device for pipe stamping deformation process
CN117619984A (en) * 2024-01-25 2024-03-01 维格斯(上海)流体技术有限公司 Water expansion forming machine for stainless steel tube processing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1245164A (en) * 1959-01-09 1960-11-04 Process for manufacturing round tubes and device for carrying out this process
US3625040A (en) * 1969-08-06 1971-12-07 Koppy Tool Corp Method and apparatus for forming articles from a tubular blank
JPS57165134A (en) * 1981-04-03 1982-10-12 Hitachi Ltd Hydraulic bulge working device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1245164A (en) * 1959-01-09 1960-11-04 Process for manufacturing round tubes and device for carrying out this process
US3625040A (en) * 1969-08-06 1971-12-07 Koppy Tool Corp Method and apparatus for forming articles from a tubular blank
JPS57165134A (en) * 1981-04-03 1982-10-12 Hitachi Ltd Hydraulic bulge working device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 005 (M - 184) 11 January 1983 (1983-01-11) *

Also Published As

Publication number Publication date
ATE252429T1 (en) 2003-11-15
EP0995512A2 (en) 2000-04-26
ES2209372T3 (en) 2004-06-16
EP0995512B1 (en) 2003-10-22

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