EP1336439A1 - Procédé et dispositif pour la production de pièces par hydroformage - Google Patents

Procédé et dispositif pour la production de pièces par hydroformage Download PDF

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Publication number
EP1336439A1
EP1336439A1 EP03002366A EP03002366A EP1336439A1 EP 1336439 A1 EP1336439 A1 EP 1336439A1 EP 03002366 A EP03002366 A EP 03002366A EP 03002366 A EP03002366 A EP 03002366A EP 1336439 A1 EP1336439 A1 EP 1336439A1
Authority
EP
European Patent Office
Prior art keywords
tool
geometry
workpiece
pipe section
sealing
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Withdrawn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
EP03002366A
Other languages
German (de)
English (en)
Inventor
Matthias Dr.-Ing. Prier
Tobias Dipl.-Ing. Gummersbach
Bernd Dr.-Ing. Engel
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.)
Schuler Hydroforming GmbH and Co KG
Original Assignee
Schuler Hydroforming GmbH and Co KG
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
Priority claimed from DE10211087A external-priority patent/DE10211087A1/de
Application filed by Schuler Hydroforming GmbH and Co KG filed Critical Schuler Hydroforming GmbH and Co KG
Publication of EP1336439A1 publication Critical patent/EP1336439A1/fr
Withdrawn legal-status Critical Current

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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

Definitions

  • the invention relates to a method and an apparatus for producing Workpieces according to the hydroforming process from one to the Tool having a workpiece geometry inserted pipe section, the at least during the expansion in the forming zone of the tool geometry from one end by means of a sealing plunger, via which the pressure medium in reaches the interior of the pipe section, is axially compressed.
  • the hydroforming process is well known in the prior art and described in the relevant literature (see VDI, progress reports, Row 2, No. 142, VDI Verlag 1987). It is preferably different for manufacturing shaped hollow body from a semi-finished product, for example a tubular one Workpiece, applied.
  • a pipe section e.g. made of steel, aluminum or copper, in a multi-part internal high-pressure forming tool Without a fixed inner die with forming plungers or sealing punches and inserted an internal high pressure source connected to this.
  • the ends of the pipe section with the sealing or forming stamp the pipe section with the help of a suitable pressure medium with high internal pressure acted upon and with simultaneous application of axial pressure (formed by at least one of the two sealing punches) on the pipe wall.
  • the axial pressure and the internal pressure cause the pipe section to adhere the inner contour or wall having the final shape of the hollow body creates according to the tool geometry of the forming tool.
  • For hydroforming the material is brought into the plastic state, during the entire forming process, taking material hardening into account and any tool forces are maintained.
  • the invention is therefore based on the object of a method and a device of the type mentioned at the outset, which also make it possible To produce workpieces that clearly exceed the usual length own expanded area.
  • the tool is arranged in an axially movable slide with a sleeve is provided, which dips into the tool and at its front, the tool geometry facing end with a complementary to the tool geometry Workpiece part geometry is formed, and in opposite directions Movement of the slide and sealing stamp occurs in the pipe section growing free expansion area of the forming zone of the tool geometry on.
  • the one built around the tool or its two tool halves Slider not only enables the necessary travel movements in a simple manner, but it also picks up the sleeve on the front End is provided with the complementary tool part geometry, so that at the opposite movement of the slide and sealing stamp when the Slide the tube out of the slide into its free position Expanding area of the forming zone from tool and sleeve part geometry grows. This does not mean that it will be a large-length expansion area from the outset reshaped what would cause the kink stability problems rather, it is first expanded in a forming zone that is as small as usual and then this forming zone gradually grows up to the final contour on.
  • the sealing stamp is located here only growing with a short length End of the pipe section.
  • FIGS. 1 to 3 An internal high-pressure forming machine or press are shown in FIGS. 1 to 3 as a detail, only a tool consisting of two tool halves 1a, 1b 1 shown, that with a forming zone 2 for expanding a into the tool 1 inserted tube section 3 representing workpiece geometry 4 is.
  • the tool 1 is in a by means of a with its plunger 11 engaging Adjustment drive 10 arranged linearly movable slide 5.
  • Adjustment drive 10 arranged linearly movable slide 5.
  • This carries a sleeve 6 immersed in the tool 1, which at its front end with a workpiece part geometry that is complementary to the workpiece geometry 4 of the tool 1 7 is designed.
  • the expansion area extending over a long length is the Slider 5 via the adjusting drive 10 engaging with its tappet 11 and the Move sealing plunger 9 in the same direction - here according to arrow 12 to the left.
  • the length of the plugged into the sleeve 6 of the slide 5 remains Pipe section 3 the same at all times, since no relative movement between the Seal 9 and the slide 5 takes place. As soon as that shown in Fig.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP03002366A 2002-02-13 2003-02-04 Procédé et dispositif pour la production de pièces par hydroformage Withdrawn EP1336439A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10206094 2002-02-13
DE10206094 2002-02-13
DE10211087 2002-03-14
DE10211087A DE10211087A1 (de) 2002-02-13 2002-03-14 Verfahren und Vorrichtung zum Herstellen von Werkstücken nach dem Innenhochdruck-Umformverfahren

Publications (1)

Publication Number Publication Date
EP1336439A1 true EP1336439A1 (fr) 2003-08-20

Family

ID=27623840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03002366A Withdrawn EP1336439A1 (fr) 2002-02-13 2003-02-04 Procédé et dispositif pour la production de pièces par hydroformage

Country Status (1)

Country Link
EP (1) EP1336439A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111774468A (zh) * 2020-07-27 2020-10-16 佛山市永恒液压机械有限公司 一种用于单卡卡压管成型的模具
CN111974866A (zh) * 2020-07-27 2020-11-24 佛山市永恒液压机械有限公司 一种用于双卡卡压管成型的模具

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4317348A (en) * 1979-08-28 1982-03-02 Mannesmann Aktiengesellschaft Making contoured hollows
DE4103082A1 (de) * 1991-02-01 1992-08-27 Eichelberg & Co Gmbh H D Verfahren zum hydrostatischen umformen von hohlkoerpern aus kaltumformbarem metall und vorrichtung zur durchfuehrung des verfahrens
EP0873802A1 (fr) * 1997-04-25 1998-10-28 Sumitomo Metal Industries, Ltd. Procédé et dispositif pour l'hydroformage d'un tube

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4317348A (en) * 1979-08-28 1982-03-02 Mannesmann Aktiengesellschaft Making contoured hollows
DE4103082A1 (de) * 1991-02-01 1992-08-27 Eichelberg & Co Gmbh H D Verfahren zum hydrostatischen umformen von hohlkoerpern aus kaltumformbarem metall und vorrichtung zur durchfuehrung des verfahrens
EP0873802A1 (fr) * 1997-04-25 1998-10-28 Sumitomo Metal Industries, Ltd. Procédé et dispositif pour l'hydroformage d'un tube

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111774468A (zh) * 2020-07-27 2020-10-16 佛山市永恒液压机械有限公司 一种用于单卡卡压管成型的模具
CN111974866A (zh) * 2020-07-27 2020-11-24 佛山市永恒液压机械有限公司 一种用于双卡卡压管成型的模具
CN111774468B (zh) * 2020-07-27 2024-05-10 佛山市永恒液压机械有限公司 一种用于单卡卡压管成型的模具
CN111974866B (zh) * 2020-07-27 2024-05-10 佛山市永恒液压机械有限公司 一种用于双卡卡压管成型的模具

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