ATE252429T1 - METHOD AND DEVICE FOR SEALING A HOLLOW PROFILE OR THE LIKE. WORKPIECE BY INTERNAL HIGH PRESSURE FORMING - Google Patents

METHOD AND DEVICE FOR SEALING A HOLLOW PROFILE OR THE LIKE. WORKPIECE BY INTERNAL HIGH PRESSURE FORMING

Info

Publication number
ATE252429T1
ATE252429T1 AT99810889T AT99810889T ATE252429T1 AT E252429 T1 ATE252429 T1 AT E252429T1 AT 99810889 T AT99810889 T AT 99810889T AT 99810889 T AT99810889 T AT 99810889T AT E252429 T1 ATE252429 T1 AT E252429T1
Authority
AT
Austria
Prior art keywords
punch
workpiece
sealing
working fluid
cavity
Prior art date
Application number
AT99810889T
Other languages
German (de)
Inventor
Joerg Hein
Aslan Goeger
Original Assignee
Alcan Tech & Man 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
Priority claimed from DE19909949A external-priority patent/DE19909949B4/en
Application filed by Alcan Tech & Man Ag filed Critical Alcan Tech & Man Ag
Application granted granted Critical
Publication of ATE252429T1 publication Critical patent/ATE252429T1/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
    • 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.
AT99810889T 1998-10-08 1999-10-01 METHOD AND DEVICE FOR SEALING A HOLLOW PROFILE OR THE LIKE. WORKPIECE BY INTERNAL HIGH PRESSURE FORMING ATE252429T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19846467 1998-10-08
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 (1)

Publication Number Publication Date
ATE252429T1 true ATE252429T1 (en) 2003-11-15

Family

ID=26049387

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99810889T ATE252429T1 (en) 1998-10-08 1999-10-01 METHOD AND DEVICE FOR SEALING A HOLLOW PROFILE OR THE LIKE. WORKPIECE BY INTERNAL HIGH PRESSURE FORMING

Country Status (3)

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

Families Citing this family (4)

* 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

Family Cites Families (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

Also Published As

Publication number Publication date
EP0995512A3 (en) 2001-04-11
EP0995512B1 (en) 2003-10-22
ES2209372T3 (en) 2004-06-16
EP0995512A2 (en) 2000-04-26

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Legal Events

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