EP0497438A1 - Procédé et dispositif d'elargissement de profils creux tubulaires - Google Patents

Procédé et dispositif d'elargissement de profils creux tubulaires Download PDF

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Publication number
EP0497438A1
EP0497438A1 EP92250022A EP92250022A EP0497438A1 EP 0497438 A1 EP0497438 A1 EP 0497438A1 EP 92250022 A EP92250022 A EP 92250022A EP 92250022 A EP92250022 A EP 92250022A EP 0497438 A1 EP0497438 A1 EP 0497438A1
Authority
EP
European Patent Office
Prior art keywords
support
internal pressure
piston
expansion
expanded
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.)
Granted
Application number
EP92250022A
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German (de)
English (en)
Other versions
EP0497438B1 (fr
Inventor
Manfred Janssen
Friedrich Stiehle
Gerd Vogt
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25900633&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0497438(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0497438A1 publication Critical patent/EP0497438A1/fr
Application granted granted Critical
Publication of EP0497438B1 publication Critical patent/EP0497438B1/fr
Anticipated expiration legal-status Critical
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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
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • B21D53/90—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards axle-housings

Definitions

  • EP 0 372 360 discloses a method for producing tubular components, in which the difficulties described are avoided by mechanically deforming critical local deformations (small radii, unfavorable profile), for example with the aid of plungers. This allows the actual hydraulic forming to be carried out The extent to which an uncontrolled bulging cannot be expected. In order to support the desired uniform shaping, it is also proposed to apply the maximum internal pressure gradually. Since in many cases, because of the inaccessibility of the hollow profile, forming tools for the additional mechanical expansion cannot be arranged, the proposed method is not suitable for expanding elongated pipes with a large forming ratio.
  • the object of the invention is to provide an improved method for the hydraulic expansion of tubular elongated hollow profiles, with which, without an additional or additional mechanical expansion, degrees of deformation of more than 15% can be achieved without material damage.
  • the outer support is not fixed to a predetermined end position, but is continuously moved away in a controlled manner.
  • the material is constantly in contact with the support and the internal pressure is kept at the level required for further flow.
  • a split die which is known per se, is used for carrying out the method, each shaped element being connected to a piston-cylinder unit which can be controlled as a function of the path.
  • the die is placed on the initial shape of the area of the hollow profile to be formed.
  • the die is opened and each form element is controlled depending on the path in such a way that the length and circumference of the hollow profile is uniform in every phase Expansion is achieved.
  • This method has the advantage that degrees of deformation of more than 15% can be achieved without additional mechanical expansion.
  • Another advantage of the method is that not only symmetrical but also asymmetrical expansions are possible. This can be achieved by making the degree of movement of the shaped elements of the die different in order to widen a predetermined position.
  • the adjustment path of the die can be increased by carrying out a first uncritical expansion step with the die open and only then placing the die on the pre-expanded hollow profile.
  • the further expansion process up to the predetermined end position takes place in the manner already described above.
  • the advantage of the proposed method is the fact that an uncontrolled bulge (balloon effect) is prevented. In contrast to the usual free deformation, in this method the deformation is not carried out directly by the internal pressure, but by the support moving away.
  • Fig. 1 the production of an axle box is shown as an example.
  • the starting product is a seamless or welded circular tube 1, which is to be expanded into a boiler 2 in a predetermined area.
  • the tube 1 is supported by a mold 3 which is firmly attached during the expansion process abuts the outer surface of the tube 1.
  • the tube 1 is encompassed, for example, by four shaped parts 5 arranged on the circumference.
  • the number of molded parts 5 forming the die may be smaller or larger, and the molded parts need not necessarily be of the same design and have the same circumferential extent.
  • a piston-cylinder unit 4 which can be controlled as a function of the path is arranged on each molded part 5.
  • a displacement sensor 6 is arranged on the hydraulic piston 7.
  • the expansion according to the invention takes place in such a way that, before the internal pressure p is applied, the molded parts 5 of the die bear on the outer surface of the area of the original tube 1 to be formed. Thereafter, the internal pressure p is increased continuously or stepwise to a value which is close to the flow limit for the material of the tube 1 used.
  • the piston-cylinder units 4 are simultaneously raised at the same time. This continues until the predetermined end position of the expansion has been reached in the area to be formed if the material continues to flow.
  • the control of the piston-cylinder units 4 can be further improved in this way if the internal pressure p is detected with the aid of a pressure sensor (not shown here) and this is given to a control circuit together with the piston travel detected by the displacement sensor 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Joints Allowing Movement (AREA)
EP92250022A 1991-01-28 1992-01-28 Procédé et dispositif d'elargissement de profils creux tubulaires Revoked EP0497438B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4102763 1991-01-28
DE4102763 1991-01-28
DE4201819A DE4201819A1 (de) 1991-01-28 1992-01-21 Verfahren und vorrichtung zum hydraulischen aufweiten von rohrfoermigen hohlprofilen
DE4201819 1992-01-21

Publications (2)

Publication Number Publication Date
EP0497438A1 true EP0497438A1 (fr) 1992-08-05
EP0497438B1 EP0497438B1 (fr) 1994-07-13

Family

ID=25900633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92250022A Revoked EP0497438B1 (fr) 1991-01-28 1992-01-28 Procédé et dispositif d'elargissement de profils creux tubulaires

Country Status (3)

Country Link
EP (1) EP0497438B1 (fr)
DE (2) DE4201819A1 (fr)
ES (1) ES2056688T3 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0548859A1 (fr) * 1991-12-20 1993-06-30 Bayerische Motoren Werke Aktiengesellschaft Procédé de fabrication d'éléments de support de véhicules
FR2703606A1 (fr) * 1993-04-10 1994-10-14 Gkn Automotive Ag Procédé de fabrication d'arbres creux présentant un profil.
WO1995012466A1 (fr) * 1993-11-03 1995-05-11 Friedrich Klaas Procede pour le formage par haute pression interne d'arbres creux etages en metal façonnable a froid
EP0770435A1 (fr) * 1995-09-21 1997-05-02 Benteler Ag Méthode de fabrication d'une pièce de construction et support d'essieu
WO1998046382A1 (fr) * 1997-04-16 1998-10-22 Cosma International Inc. Presse de formage hydraulique sous pression elevee
US5850695A (en) * 1993-11-26 1998-12-22 Cosma International Inc. One-piece hollow camshafts and process for producing same
US6041633A (en) * 1997-02-12 2000-03-28 Anton Bauer Werkzeug- Und Maschinenbau Gmbh & Co. Kg Forming apparatus
EP1010480A1 (fr) * 1998-12-18 2000-06-21 Tubes et Formes Procédé et dispositif de réalisation par hydroformage d'un piquage incliné à partir d'un tube métallique
EP1197274A1 (fr) * 1997-04-16 2002-04-17 Cosma International Inc. Presse de formage hydraulique sous pression élevée
EP1216769A3 (fr) * 2000-12-23 2003-11-19 DaimlerChrysler AG Pocédé et dispositif de fabrication d' un profilé creux fermé
EP2030701A1 (fr) * 2007-08-25 2009-03-04 IFUTEC Ingenieurbüro für Umformtechnik GmbH Outil et procédé destinés à la fabrication d'un élément creux
CN102886427A (zh) * 2012-09-24 2013-01-23 重庆科技学院 汽车驱动桥整体复合胀形工艺
RU2786562C1 (ru) * 2022-04-19 2022-12-22 Федеральное государственное бюджетное образовательное учреждение высшего образования "Тульский государственный университет" (ТулГУ) Устройство для получения рифлей на наружной поверхности цилиндрической оболочки

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4232161A1 (de) * 1992-09-25 1994-03-31 Audi Ag Verfahren zum Herstellen eines Hohlkörpers
DE4337242A1 (de) * 1993-10-30 1995-05-04 Opel Adam Ag Geschweißte Kraftfahrzeug-Hinterachse
DE19513444C2 (de) * 1995-04-13 1999-12-23 Konrad Schnupp Vorrichtung zum hydromechanischen Umformen
DE19719628C2 (de) * 1997-05-09 2000-07-06 Daimler Chrysler Ag Verfahren und Einrichtung zur Herstellung von ausgebauchten Hohlprofilen
WO1999020414A1 (fr) 1997-10-20 1999-04-29 Josef Worringer Procede et dispositif pour produire un arbre a partir d'un element tubulaire, et arbre a cames produit a partir d'un element tubulaire
DE19756673A1 (de) * 1997-12-19 1999-07-01 Josef Worringer Verfahren zur Herstellung einer Welle aus einem Rohrstück, Vorrichtung zur Herstellung einer Welle aus einem Rohrstück und aus einem Rohrstück hergestellte Nockenwelle
DE202017106654U1 (de) 2017-11-03 2018-01-11 Wvl-Werkzeug- Und Vorrichtungsbau Lichtenstein Gmbh Formbackensystem eines Innenhochdruck-Umformwerkzeuges

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH295158A (de) * 1950-09-18 1953-12-15 Ici Ltd Verfahren und Vorrichtung zur Herstellung von Rohrfittingen.
GB2057322A (en) * 1979-08-28 1981-04-01 Mannesmann Ag Process and apparatus for the formation of hollow objects having varying cross section
US4262517A (en) * 1978-08-07 1981-04-21 Hitachi, Ltd. Method of correcting distorted pipe end

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE938606C (de) * 1950-09-18 1956-02-02 Ici Ltd Verfahren und Einrichtung zur Herstellung eines verzweigten Rohranschlusses
DE3906957A1 (de) * 1988-12-05 1990-09-06 Kuhn Rainer Verfahren zur herstellung von rohrartigen bauteilen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH295158A (de) * 1950-09-18 1953-12-15 Ici Ltd Verfahren und Vorrichtung zur Herstellung von Rohrfittingen.
US4262517A (en) * 1978-08-07 1981-04-21 Hitachi, Ltd. Method of correcting distorted pipe end
GB2057322A (en) * 1979-08-28 1981-04-01 Mannesmann Ag Process and apparatus for the formation of hollow objects having varying cross section

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0548859A1 (fr) * 1991-12-20 1993-06-30 Bayerische Motoren Werke Aktiengesellschaft Procédé de fabrication d'éléments de support de véhicules
US5802899A (en) * 1993-03-11 1998-09-08 Friedrich Klaas Method for internal high-pressure deforming of hollow offset shafts made of cold-deformable metal
FR2703606A1 (fr) * 1993-04-10 1994-10-14 Gkn Automotive Ag Procédé de fabrication d'arbres creux présentant un profil.
WO1995012466A1 (fr) * 1993-11-03 1995-05-11 Friedrich Klaas Procede pour le formage par haute pression interne d'arbres creux etages en metal façonnable a froid
CN1057029C (zh) * 1993-11-03 2000-10-04 费里德里希·克拉斯 可冷成型金属制空心阶梯轴内高压成型的方法
US5850695A (en) * 1993-11-26 1998-12-22 Cosma International Inc. One-piece hollow camshafts and process for producing same
US5960660A (en) * 1993-11-26 1999-10-05 Cosma International Inc. One-piece hollow camshafts and process for producing same
EP0770435A1 (fr) * 1995-09-21 1997-05-02 Benteler Ag Méthode de fabrication d'une pièce de construction et support d'essieu
US6041633A (en) * 1997-02-12 2000-03-28 Anton Bauer Werkzeug- Und Maschinenbau Gmbh & Co. Kg Forming apparatus
CN1087666C (zh) * 1997-04-16 2002-07-17 科西马国际公司 高压液压成形压机
US6014879A (en) * 1997-04-16 2000-01-18 Cosma International Inc. High pressure hydroforming press
EP1197274A1 (fr) * 1997-04-16 2002-04-17 Cosma International Inc. Presse de formage hydraulique sous pression élevée
WO1998046382A1 (fr) * 1997-04-16 1998-10-22 Cosma International Inc. Presse de formage hydraulique sous pression elevee
EP1010480A1 (fr) * 1998-12-18 2000-06-21 Tubes et Formes Procédé et dispositif de réalisation par hydroformage d'un piquage incliné à partir d'un tube métallique
FR2787357A1 (fr) * 1998-12-18 2000-06-23 Tubes Et Formes Procede et dispositif de realisation par hydroformage d'un piquage incline a partir d'un tube metallique
US6202460B1 (en) 1998-12-18 2001-03-20 Tubes Et Formes Method and device for producing a Y-fitting from a metal tube by hydroforming
EP1216769A3 (fr) * 2000-12-23 2003-11-19 DaimlerChrysler AG Pocédé et dispositif de fabrication d' un profilé creux fermé
EP2030701A1 (fr) * 2007-08-25 2009-03-04 IFUTEC Ingenieurbüro für Umformtechnik GmbH Outil et procédé destinés à la fabrication d'un élément creux
WO2009027789A2 (fr) 2007-08-25 2009-03-05 IFUTEC Ingenieurbüro für Umformtechnik GmbH Outil et procédé pour produire un élément creux
WO2009027789A3 (fr) * 2007-08-25 2009-07-02 Ifutec Ingenieurbuero Fuer Umf Outil et procédé pour produire un élément creux
CN102886427A (zh) * 2012-09-24 2013-01-23 重庆科技学院 汽车驱动桥整体复合胀形工艺
CN102886427B (zh) * 2012-09-24 2014-10-22 重庆科技学院 汽车驱动桥整体复合胀形工艺
RU2786562C1 (ru) * 2022-04-19 2022-12-22 Федеральное государственное бюджетное образовательное учреждение высшего образования "Тульский государственный университет" (ТулГУ) Устройство для получения рифлей на наружной поверхности цилиндрической оболочки

Also Published As

Publication number Publication date
DE4201819A1 (de) 1992-07-30
DE59200269D1 (de) 1994-08-18
ES2056688T3 (es) 1994-10-01
EP0497438B1 (fr) 1994-07-13

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