EP1654080A1 - Internal high pressure shaping method for shaping conical metal tubes - Google Patents
Internal high pressure shaping method for shaping conical metal tubesInfo
- Publication number
- EP1654080A1 EP1654080A1 EP04741365A EP04741365A EP1654080A1 EP 1654080 A1 EP1654080 A1 EP 1654080A1 EP 04741365 A EP04741365 A EP 04741365A EP 04741365 A EP04741365 A EP 04741365A EP 1654080 A1 EP1654080 A1 EP 1654080A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- high pressure
- conical
- tool
- internal high
- 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.)
- Withdrawn
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
- B21D26/047—Mould construction
-
- 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
- B21D26/043—Means for controlling the axial pusher
-
- 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
- B21D51/00—Making hollow objects
- B21D51/02—Making hollow objects characterised by the structure of the objects
- B21D51/10—Making hollow objects characterised by the structure of the objects conically or cylindrically shaped objects
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49805—Shaping by direct application of fluent pressure
Definitions
- the invention relates to a method for hydroforming of conical tubes made of metal, in particular steel, in a complex contoured mold cavity having tool with two sealing dies, with which the interior of the tube to be formed is sealed at both ends by the engaging in the pipe ends sealing punch the Press pipe ends against the wall of cylindrical sections at both ends of the mold cavity.
- the invention has for its object to provide a method for hydroforming of conical tubes, which allows large degrees of deformation in complex shapes and makes less effort than the method described required.
- the internal high pressure reshaping, purely conical tube is inserted into a conventionally designed tool, wherein the A special feature is that the conical pipe ends protrude into the cylindrical end portions of the tool. Before the actual hydroforming the conical ends are pressed by the inserted sealing ram, in particular with radial widening of the smaller conical end of the cylindrical end portions of the tool to those for the
- Fig. 2 shows the cylindrical tube in the tool with inserted into the tube ends sealing punches immediately before the hydroforming
- the tool 1 has a shape-complex cavity 2, which is composed in the embodiment of conical and cylindrical sections.
- the Mold cavity 2 has cylindrical sections 2a, 2b at its two open ends.
- two sealing dies 3, 4 are matched in their dimensions.
- Each seal 3, 4 is divided into four sections.
- the largest in diameter portion 3a, 4a corresponds to the inner diameter of the cylindrical portions 2a, 2b of the workpiece 1.
- the adjoining, in the axial direction comparatively very short section 3b, 4b is conical.
- a larger conical section 3d, 4d which serves as a mandrel for radially expanding or centering the associated pipe end.
- the tube 5 is at least at its smaller end 5a, but preferably at its two ends 5a, 5b by the conical sections 3d, 4d radially expanded until it lies with its edges between the cylindrical portions 3c, 4c and the cylindrical portion 2a, 2b of the tool 1.
- the dimensioning is made so that the pipe ends are clamped.
- the sealing dies 3, 4 on the tube 5 its edges abut on the short conical sections 3b, 4b, whereby the sealing effect is further improved.
- wedge-shaped grooves, seals to be clamped in or the like can be provided to improve the sealing effect.
- the tube 5 is prepared in the tool 1 for hydroforming.
- Fig. 3 it will now be understood in a manner known per se, e.g. introduced via a channel 6 in the larger sealing die 4, a pressure medium in the sealed interior 5c of the tube 5 and an internal high pressure built up.
- This internal high pressure causes the tube 5 is widened.
- Simultaneously with the expansion of the tube is carried out by advancing the two sealing dies 3, 4, an axial compression of the tube 5.
- This axial upsetting can achieve large Aufweitgrade without unwanted material thinning takes place.
- Fig. 3 further shows, the axial advancement takes place up to the edge of the mold cavity 2. As a result, a highly deformed tube 5 * having a complex structure is obtained.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10337383A DE10337383B4 (en) | 2003-08-13 | 2003-08-13 | Process for hydroforming conical metal pipes |
PCT/EP2004/008727 WO2005018846A1 (en) | 2003-08-13 | 2004-08-04 | Internal high pressure shaping method for shaping conical metal tubes |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1654080A1 true EP1654080A1 (en) | 2006-05-10 |
Family
ID=34177549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04741365A Withdrawn EP1654080A1 (en) | 2003-08-13 | 2004-08-04 | Internal high pressure shaping method for shaping conical metal tubes |
Country Status (5)
Country | Link |
---|---|
US (1) | US7797806B2 (en) |
EP (1) | EP1654080A1 (en) |
CA (1) | CA2536076A1 (en) |
DE (1) | DE10337383B4 (en) |
WO (1) | WO2005018846A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI267410B (en) * | 2002-11-08 | 2006-12-01 | Mitsubishi Motors Corp | Deformed element pipe for hydraulic bulging, hydraulic bulging device using the element pipe, hydraulic bulging method using the element pipe, and hydraulic-bulged product |
US7827839B2 (en) | 2002-11-08 | 2010-11-09 | Sumitomo Metal Industries, Ltd. | Profile element pipe for hydraulic bulging, hydraulic bulging device using the element pipe, hydraulic bulging method using the element pipe, and hydraulically bulged product |
DE102005036419B4 (en) * | 2005-07-29 | 2015-05-21 | Tower Automotive Hydroforming Gmbh & Co. Kg | Device for producing bulged hollow profiles, in particular gas generator housings for airbag devices |
DE102005058364A1 (en) * | 2005-12-06 | 2007-06-14 | Hde Solutions Gmbh | High-pressure tube hydroforming device for metallic pipes, has mechanism that has free projecting adapter stopper, and precisely fitting adaptation area that is formed between outer and inner extent surface |
EP2110189A1 (en) | 2008-04-18 | 2009-10-21 | ETH Zürich | Method for dieless forming of sheet metal |
CN101862776B (en) * | 2009-04-17 | 2013-06-05 | 富准精密工业(深圳)有限公司 | Shell of electronic device and manufacturing method thereof |
TWI414227B (en) * | 2009-04-30 | 2013-11-01 | Foxconn Tech Co Ltd | Method for manufacturing a shell of an electronic device and a shell obtained thereby |
DE102013223272A1 (en) * | 2013-11-14 | 2015-05-21 | Bombardier Transportation Gmbh | Method for producing a tubular equipment element for a rail vehicle |
CZ2016846A3 (en) * | 2016-12-31 | 2018-07-11 | Západočeská Univerzita V Plzni | A method of hot production of hollow bodies from martensitic-austenitic AHS steels using internal overpressure with heating in the tool |
CN113441613B (en) * | 2021-07-12 | 2023-04-28 | 内蒙古工业大学 | Frock clamp for heat setting of vascular stent |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS531165A (en) | 1976-06-24 | 1978-01-07 | Sankei Giken Kogyo Kk | Method of fabricating tapered pipe having curved portion |
US4449281A (en) * | 1982-03-16 | 1984-05-22 | Kawasaki Jukogyo Kabushiki Kaisha | Method of producing multiple-wall, composite tubular structures |
US4590655A (en) * | 1984-01-26 | 1986-05-27 | Grotnes Metalforming Systems, Inc. | Method for expanding a tubular member |
US4761982A (en) * | 1986-10-01 | 1988-08-09 | General Motors Corporation | Method and apparatus for forming a heat exchanger turbulator and tube |
US5022135A (en) * | 1987-12-07 | 1991-06-11 | Brazeway, Inc. | Method of manufacturing a fluid conduit having exterior detail |
IT1240233B (en) * | 1990-02-02 | 1993-11-27 | Europa Metalli Lmi | PROCEDURE FOR THE PRODUCTION OF MONOLITHIC ELEMENTS CABLES IN METALLIC MATERIAL |
US6216509B1 (en) * | 1998-08-25 | 2001-04-17 | R.J. Tower Corporation | Hydroformed tubular member and method of hydroforming tubular members |
DE60104829T2 (en) * | 2000-02-18 | 2005-09-01 | Cosma International Inc., Concord | Method for producing a tubular part with a hydroformed connecting element |
JP4057297B2 (en) * | 2002-01-08 | 2008-03-05 | 日本発条株式会社 | Bellows and manufacturing method thereof |
US6695711B2 (en) * | 2002-01-28 | 2004-02-24 | Royal Precision, Inc. | Hydroformed metallic golf club shafts and method therefore |
TWI267410B (en) | 2002-11-08 | 2006-12-01 | Mitsubishi Motors Corp | Deformed element pipe for hydraulic bulging, hydraulic bulging device using the element pipe, hydraulic bulging method using the element pipe, and hydraulic-bulged product |
DE10357341B4 (en) * | 2003-12-09 | 2006-02-09 | Daimlerchrysler Ag | Apparatus and method for hydroforming a blank |
US7284403B2 (en) * | 2004-12-28 | 2007-10-23 | Torque-Traction Technologies Llc | Apparatus and method for performing a hydroforming process |
-
2003
- 2003-08-13 DE DE10337383A patent/DE10337383B4/en not_active Expired - Fee Related
-
2004
- 2004-08-04 CA CA002536076A patent/CA2536076A1/en not_active Abandoned
- 2004-08-04 US US10/568,265 patent/US7797806B2/en not_active Expired - Fee Related
- 2004-08-04 EP EP04741365A patent/EP1654080A1/en not_active Withdrawn
- 2004-08-04 WO PCT/EP2004/008727 patent/WO2005018846A1/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO2005018846A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20070180677A1 (en) | 2007-08-09 |
WO2005018846A1 (en) | 2005-03-03 |
DE10337383A1 (en) | 2005-03-10 |
CA2536076A1 (en) | 2005-03-03 |
US7797806B2 (en) | 2010-09-21 |
DE10337383B4 (en) | 2005-12-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20060118 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: THYSSENKRUPP STEEL AG |
|
DAX | Request for extension of the european patent (deleted) | ||
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SCHNEIDER, SVEN FRANZ-JOSEF Inventor name: SCHWARZ, STEFAN Inventor name: AUST, MATTHIAS |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20071023 |