EP1184101B1 - Procédé pour former des articles tubulaires creux métalliques - Google Patents

Procédé pour former des articles tubulaires creux métalliques Download PDF

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Publication number
EP1184101B1
EP1184101B1 EP01117698A EP01117698A EP1184101B1 EP 1184101 B1 EP1184101 B1 EP 1184101B1 EP 01117698 A EP01117698 A EP 01117698A EP 01117698 A EP01117698 A EP 01117698A EP 1184101 B1 EP1184101 B1 EP 1184101B1
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EP
European Patent Office
Prior art keywords
hollow body
tubular hollow
accordance
phases
annealed
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.)
Expired - Lifetime
Application number
EP01117698A
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German (de)
English (en)
Other versions
EP1184101A3 (fr
EP1184101A2 (fr
Inventor
Wolfgang Dipl.-Ing. Rempe
Franz Dipl.-Ing. Steimmel
Frank Dipl.-Ing. Wähner
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.)
Hydro Aluminium Deutschland GmbH
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Hydro Aluminium Deutschland GmbH
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Filing date
Publication date
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Application filed by Hydro Aluminium Deutschland GmbH filed Critical Hydro Aluminium Deutschland GmbH
Publication of EP1184101A2 publication Critical patent/EP1184101A2/fr
Publication of EP1184101A3 publication Critical patent/EP1184101A3/fr
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02Shaping 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
    • B21D26/033Deforming tubular bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D41/00Application of procedures in order to alter the diameter of tube ends
    • B21D41/02Enlarging

Definitions

  • the invention relates to a method for deforming tubular hollow bodies made of metal according to the preamble of patent claim 1.
  • EP 0 372 360 A2 discloses mechanically pre-expanding a hollow body before it is hydro-formed. However, details of mechanical pre-expanding are not disclosed.
  • the invention is thus based on the object to enable in a simple manner larger changes in the cross section within a tubular hollow body.
  • the tubular hollow body Due to the upstream processing phase, the tubular hollow body can already be impressed with a preliminary cross-sectional shape, which tends to the final cross-sectional shape. It is achieved by the subsequent annealing that for hydro forming again the maximum Umformweg is available. In the final hydroforming, a final cross-sectional shape can thus be achieved which, compared with the original cross-sectional shape of the tubular hollow body after longitudinal seam welding, is considerably above the previously attainable maximum values.
  • the machining phases can be mechanically partially widened and soft annealing performed several times in succession. As a result, even larger forming paths can be achieved.
  • tubular hollow body can also be annealed prior to the upstream processing phase.
  • solidifications are eliminated by the forming process to a closed tube and achieved a high deformation reserve for the upstream processing phases.
  • the partial widening of the tubular hollow body can be carried out at those points where the greatest change in the cross section occurs after hydroforming in relation to the starting cross section.
  • the starting point is a tubular hollow body 10 made of aluminum with a constant circular cross-sectional area, as shown in a).
  • This hollow body 10 is now partially widened by a machining tool, here by a conical mandrel 12, which is driven axially into the hollow body 10.
  • a conical mandrel 12 which is driven axially into the hollow body 10.
  • an expandable mandrel is used, which is first inserted, then spread and then driven axially over a limited distance.
  • the expanded hollow body 10 ' as shown in b), annealed at about 300 degrees Celsius.
  • hydroforming takes place in a die 14.
  • the widened hollow body 10 ' is inserted into the die 14, the interior of which represent the future outer dimensions of the hollow body 10'.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Heat Treatment Of Articles (AREA)
  • Forging (AREA)

Claims (5)

  1. Procédé pour le moulage de pièces creuses (10) en métal ayant une forme tubulaire, en particulier en aluminium, dans lequel, postérieurement à la transformation d'un produit demi-élaboré ayant une forme de plateau en un profil transversal fermé et, une fois réalisée la couture longitudinalement soudée des arêtes situées, l'une face à l'autre, du produit demi-élaboré, la pièce creuse ayant une forme tubulaire déjà formée est détrempée et finalement, elle est hydrauliquement transformée en une matrice (14) par un moyen introduit dans la pièce creuse, caractérisé en ce que la pièce creuse, ayant une forme tubulaire, (10) est, tout d'abord, , partiellement élargie, de façon mécanique, lors d'une étape d'élaboration préalable et, par la suite, celle-ci est détrempée à la fois qu'un mandrin élargible est employé, lequel est, tout d'abord, introduit de façon axiale et, par la suite, celui-ci est élargit à la fois qu'il continue à être poussé, de façon axiale, le long d'un parcours limité.
  2. Procédé, conformément à la revendication 1, caractérisé en ce que les étapes d'élaboration de l'élargissement partiel, de forme mécanique, et le détrempage mené à bout, par la suite, sont réalisés à plusieurs reprises, de façon consécutive.
  3. Procédé, conformément aux revendications 1 ou 2, caractérisé en ce que la pièce creuse, ayant une forme tubulaire, (10) est également détrempée avant de l'étape d'élaboration préalable.
  4. Procédé, conformément à l'une des revendications 1 à 3, caractérisé en ce que l'élargissement partiel de la pièce creuse, ayant une forme tubulaire, est mené à bout à partir des positions dans lesquelles est réalisée la plus grande modification de la coupe transversale, postérieurement à la transformation hydraulique face à la section transversale initiale.
  5. Procédé, conformément à l'une des revendications 1 à 4, caractérisé en ce qu'entre l'étape d'élaboration du détrempage et la transformation hydraulique, sont menées à bout d'autres étapes d'élaboration comme le cintrage mécanique et le prémoulage mécanique.
EP01117698A 2000-08-29 2001-07-25 Procédé pour former des articles tubulaires creux métalliques Expired - Lifetime EP1184101B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10042465A DE10042465C2 (de) 2000-08-29 2000-08-29 Verfahren zum Verformen von rohrförmigen Hohlkörpern aus Metall
DE10042465 2000-08-29

Publications (3)

Publication Number Publication Date
EP1184101A2 EP1184101A2 (fr) 2002-03-06
EP1184101A3 EP1184101A3 (fr) 2002-12-11
EP1184101B1 true EP1184101B1 (fr) 2006-07-05

Family

ID=7654222

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01117698A Expired - Lifetime EP1184101B1 (fr) 2000-08-29 2001-07-25 Procédé pour former des articles tubulaires creux métalliques

Country Status (6)

Country Link
US (1) US6826943B2 (fr)
EP (1) EP1184101B1 (fr)
AT (1) ATE332198T1 (fr)
DE (2) DE10042465C2 (fr)
DK (1) DK1184101T3 (fr)
ES (1) ES2267636T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008046052A1 (de) 2008-09-08 2010-03-18 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines rohrförmigen Stabilisators

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI111347B (fi) * 2000-01-28 2003-07-15 Uponor Innovation Ab Menetelmä ja laitteisto muhvillisen putken muodostamiseksi ja muhvillinen putki
DE10058592A1 (de) * 2000-11-25 2002-06-06 Bosch Gmbh Robert Werkstück
US7013697B2 (en) 2001-07-05 2006-03-21 Magna Structural Systems, Inc. Method for expanding a tubular blank
GB2380958B (en) * 2001-10-18 2004-12-15 Dana Corp Method of manufacturing an axially collapsible driveshaft
DE10224647A1 (de) * 2002-06-03 2003-12-18 Ulrich Huperz Schweistechnik G Lanzanfang für ein Gasleitsystem
US7140226B2 (en) * 2002-08-05 2006-11-28 Giant Manufacturing Co., Ltd. Methods for making a bicycle frame part having a disproportionally enlarged end section
US7431317B2 (en) * 2002-08-05 2008-10-07 Giant Manufacturing Co., Ltd. Bicycle frame part having a disproportionally enlarged end section and process for making the same
US7128558B2 (en) * 2002-08-09 2006-10-31 The Boeing Company Post-forming of thermoplastic ducts
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
DE10312028B4 (de) * 2003-03-18 2005-07-28 Tower Automotive Hydroforming Gmbh & Co. Kg Verfahren zur Herstellung von Bauteilen
DE102005007997B3 (de) * 2005-02-19 2005-12-08 Tower Automotive Hydroforming Gmbh & Co. Kg Verfahren und Einrichtung zur Herstellung von Bauteilen
US20070187437A1 (en) * 2006-02-10 2007-08-16 Nordson Corporation Dispensing tip for liquid dispensing systems and method of making the same
US7421359B2 (en) * 2006-06-05 2008-09-02 Seagate Technology Llc Detecting back electromotive force voltage
DE102007037835B3 (de) * 2007-08-10 2009-02-12 Deutsches Elektronen-Synchrotron Desy Verfahren und Vorrichtung zur Herstellung von schweissnahtlosen Hochfrequenzresonatoren
DE102010051997A1 (de) * 2010-11-19 2012-05-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zur Herstellung eines hohlen Bauteils und ein hohles Bauteil
DE102013109880B4 (de) 2012-09-10 2016-11-03 National Research Council Of Canada Reibungsarmer Endennachschub beim Innenhochdruckumformen
CN104646480B (zh) * 2015-03-02 2016-09-28 安徽工业大学 一种轻合金变径管成形的方法及装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1980264A (en) * 1932-01-16 1934-11-13 Fulton Sylphon Co Method of corrugating tubes
US3247581A (en) * 1962-02-05 1966-04-26 Calumet & Hecla Method of forming a conduit bend
GB1370700A (en) * 1972-03-18 1974-10-16 Gen Motors Ltd Forming transverse corrugations in a tubular blank
SU1175592A1 (ru) * 1984-02-22 1985-08-30 Anatolij G Pashkevich "cпocoб шtamпobkи пoлыx дetaлeй из tpубhыx зaгotobok"
DE3906957A1 (de) * 1988-12-05 1990-09-06 Kuhn Rainer Verfahren zur herstellung von rohrartigen bauteilen
DE4142325C2 (de) * 1991-12-20 1996-06-13 Bayerische Motoren Werke Ag Verfahren zum Herstellen von Fahrwerksträgern
DE4427201C2 (de) * 1993-11-26 1996-09-12 Ges Innenhochdruckverfahren Verfahren zur Herstellung von hohlen Nockenwellen
US6260401B1 (en) * 1997-12-15 2001-07-17 Bestex Kyoei Co., Ltd. Method of molding high expansion pipe and the high expansion pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008046052A1 (de) 2008-09-08 2010-03-18 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines rohrförmigen Stabilisators
DE102008046052B4 (de) * 2008-09-08 2011-10-20 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines rohrförmigen Stabilisators

Also Published As

Publication number Publication date
DE10042465C2 (de) 2002-08-01
ES2267636T3 (es) 2007-03-16
DK1184101T3 (da) 2006-10-23
DE10042465A1 (de) 2002-03-28
US20020073758A1 (en) 2002-06-20
DE50110386D1 (de) 2006-08-17
EP1184101A3 (fr) 2002-12-11
ATE332198T1 (de) 2006-07-15
EP1184101A2 (fr) 2002-03-06
US6826943B2 (en) 2004-12-07

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