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 FORMINGInfo
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Gasket Seals (AREA)
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.
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 (5)
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 |
CN117619984B (en) * | 2024-01-25 | 2024-05-07 | 维格斯(上海)流体技术有限公司 | Water expansion forming machine for stainless steel tube processing |
Family Cites Families (3)
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 |
-
1999
- 1999-10-01 AT AT99810889T patent/ATE252429T1/en not_active IP Right Cessation
- 1999-10-01 ES ES99810889T patent/ES2209372T3/en not_active Expired - Lifetime
- 1999-10-01 EP EP99810889A patent/EP0995512B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2209372T3 (en) | 2004-06-16 |
EP0995512B1 (en) | 2003-10-22 |
EP0995512A3 (en) | 2001-04-11 |
EP0995512A2 (en) | 2000-04-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
REN | Ceased due to non-payment of the annual fee |