EP1654080A1 - Procede pour le formage a haute pression interne de tubes coniques en metal - Google Patents

Procede pour le formage a haute pression interne de tubes coniques en metal

Info

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Withdrawn
Application number
EP04741365A
Other languages
German (de)
English (en)
Inventor
Stefan Schwarz
Sven Franz-Josef Schneider
Matthias Aust
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.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Stahl AG
ThyssenKrupp Steel 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 ThyssenKrupp Stahl AG, ThyssenKrupp Steel AG filed Critical ThyssenKrupp Stahl AG
Publication of EP1654080A1 publication Critical patent/EP1654080A1/fr
Withdrawn legal-status Critical Current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
    • B21D26/047—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

L'invention concerne un procédé pour le formage à haute pression interne de tubes coniques (5) en métal, notamment en acier, dans un outil (1) présentant une empreinte de moule à contour complexe (2). L'empreinte de moule (2) présente des segments cylindriques (2a, 2b) à ses deux extrémités opposées. Dans une telle empreinte de moule, le tube conique sur toute sa longueur est introduit de façon que ses extrémités (5a, 5b) soient placées dans la zone des segments cylindriques (2a, 2b). Les extrémités (5a, 5b) sont pressées au moyen des poinçons étanches contre les segments cylindriques (2a, 2b), éventuellement avec un évasement radial, de sorte qu'elles sont coincées entre la paroi des segments cylindriques (2a, 2b) et les poinçons étanches. Le tube (5) est repoussé contre le contour complexe de l'empreinte de moule (2) par mise sous haute pression interne du tube (5) et refoulement axial simultané du tube (5).
EP04741365A 2003-08-13 2004-08-04 Procede pour le formage a haute pression interne de tubes coniques en metal Withdrawn EP1654080A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10337383A DE10337383B4 (de) 2003-08-13 2003-08-13 Verfahren zum Innenhochdruckumformen von konischen Rohren aus Metall
PCT/EP2004/008727 WO2005018846A1 (fr) 2003-08-13 2004-08-04 Procede pour le formage a haute pression interne de tubes coniques en metal

Publications (1)

Publication Number Publication Date
EP1654080A1 true EP1654080A1 (fr) 2006-05-10

Family

ID=34177549

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04741365A Withdrawn EP1654080A1 (fr) 2003-08-13 2004-08-04 Procede pour le formage a haute pression interne de tubes coniques en metal

Country Status (5)

Country Link
US (1) US7797806B2 (fr)
EP (1) EP1654080A1 (fr)
CA (1) CA2536076A1 (fr)
DE (1) DE10337383B4 (fr)
WO (1) WO2005018846A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
DE102005036419B4 (de) * 2005-07-29 2015-05-21 Tower Automotive Hydroforming Gmbh & Co. Kg Vorrichtung zur Herstellung ausgebauchter Hohlprofile, insbesondere von Gasgeneratorgehäusen für Airbageinrichtungen
DE102005058364A1 (de) * 2005-12-06 2007-06-14 Hde Solutions Gmbh Vorrichtung zur Innenhochdruckumformung von metallischen Rohren
EP2110189A1 (fr) 2008-04-18 2009-10-21 ETH Zürich Procédé de formage de tôle sans outil
CN101862776B (zh) * 2009-04-17 2013-06-05 富准精密工业(深圳)有限公司 电子装置的壳体及其制造方法
TWI414227B (zh) * 2009-04-30 2013-11-01 Foxconn Tech Co Ltd 電子裝置之殼體及其製造方法
DE102013223272A1 (de) * 2013-11-14 2015-05-21 Bombardier Transportation Gmbh Verfahren zur Herstellung eines rohrförmigen Ausstattungselements für ein Schienenfahrzeug
CZ307376B6 (cs) * 2016-12-31 2018-07-11 Západočeská Univerzita V Plzni Způsob výroby dutých těles z martenziticko-austenitických AHS ocelí zatepla vnitřním přetlakem s ohřevem v nástroji
CN113441613B (zh) * 2021-07-12 2023-04-28 内蒙古工业大学 一种血管支架热定型用工装夹具

Family Cites Families (13)

* Cited by examiner, † Cited by third party
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 (it) * 1990-02-02 1993-11-27 Europa Metalli Lmi Procedimento per la realizzazione di elementi monolitici cavi in materiale metallico
US6216509B1 (en) * 1998-08-25 2001-04-17 R.J. Tower Corporation Hydroformed tubular member and method of hydroforming tubular members
MXPA02008003A (es) * 2000-02-18 2003-05-23 Cosma Int Inc Montaje tubular que tiene un miembro de interconexion hidroconformado y metodo para fabricar el mismo.
JP4057297B2 (ja) * 2002-01-08 2008-03-05 日本発条株式会社 ベローズ及びその製造方法
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 (de) * 2003-12-09 2006-02-09 Daimlerchrysler Ag Vorrichtung und Verfahren zur Innenhochdruckumformung eines Rohlings
US7284403B2 (en) * 2004-12-28 2007-10-23 Torque-Traction Technologies Llc Apparatus and method for performing a hydroforming process

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005018846A1 *

Also Published As

Publication number Publication date
US20070180677A1 (en) 2007-08-09
WO2005018846A1 (fr) 2005-03-03
DE10337383A1 (de) 2005-03-10
US7797806B2 (en) 2010-09-21
DE10337383B4 (de) 2005-12-08
CA2536076A1 (fr) 2005-03-03

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