EP1029611B1 - Dispositif pour la fabrication de produits creux courbes contre-dépouillés par hydroformage - Google Patents

Dispositif pour la fabrication de produits creux courbes contre-dépouillés par hydroformage Download PDF

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Publication number
EP1029611B1
EP1029611B1 EP00103174A EP00103174A EP1029611B1 EP 1029611 B1 EP1029611 B1 EP 1029611B1 EP 00103174 A EP00103174 A EP 00103174A EP 00103174 A EP00103174 A EP 00103174A EP 1029611 B1 EP1029611 B1 EP 1029611B1
Authority
EP
European Patent Office
Prior art keywords
parts
work piece
workpiece
flange
area
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
EP00103174A
Other languages
German (de)
English (en)
Other versions
EP1029611A3 (fr
EP1029611A2 (fr
Inventor
Bernd Dr. Ing. Schulze
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.)
Dr Meleghy Hydroforming GmbH and Co KG
Original Assignee
Dr Meleghy Hydroforming GmbH and Co KG
Meleghy 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
Application filed by Dr Meleghy Hydroforming GmbH and Co KG, Meleghy Hydroforming GmbH and Co KG filed Critical Dr Meleghy Hydroforming GmbH and Co KG
Publication of EP1029611A2 publication Critical patent/EP1029611A2/fr
Publication of EP1029611A3 publication Critical patent/EP1029611A3/fr
Application granted granted Critical
Publication of EP1029611B1 publication Critical patent/EP1029611B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21D26/021—Deforming sheet bodies
    • B21D26/029—Closing or sealing means
    • 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
    • B21D26/021—Deforming sheet bodies
    • B21D26/031—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
    • B21D26/053—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 characterised by the material of the blanks
    • B21D26/059—Layered blanks
    • 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 device for production especially bellied undercut hollow body the preamble of the 1st claim and finds for the production of workpieces Hydroforming process (IHV) application that a large cross-section change at the IHV necessary.
  • IHV workpieces Hydroforming process
  • WO 98/24569 it is known for the production of tubular hollow bodies with a flange accordingly to use preformed starting parts, their molded and welded flange area for tension in the Forming tool is used. Are two starting parts used, these can by the welded connection in the Flange area not separated from each other again be processed further.
  • the variety of parts that can be produced is limited to tubular bodies.
  • Cup-shaped preformed starting parts are used at the IHU WO 97/29869 used.
  • the parts become area by area bulged by IHU according to the tool engraving.
  • DE 195 35 870 A1 discloses a method for manufacturing of hollow bodies or molded parts, in which two sheet-shaped Workpiece parts welded in the area of a flange and deformed together by hydroforming, the deformation takes place against two partial engravings, the release the workpiece after shaping. With this However, procedures are not using bulbous hollow bodies Make undercut, since the device only in parallel planes is divided.
  • the object of the invention is a device for To develop hydroforming that enable a large variety of parts, especially of bulbous ones To produce workpieces, it should also be possible Workpiece parts produced jointly by IHV according to the IHV if necessary, to be processed separately or together and the separately processed workpiece parts again add to a hollow body exactly fixed to each other can.
  • the device is according to the one to be generated Workpiece shape and the number of workpiece parts in different tool levels divided and points in closed state corresponding to a closed engraving the workpiece shape to be generated. It is still a Docking system for pressure medium supply for the generation of the Internal high pressure provided.
  • One or more Tool levels can be in accordance with the workpiece shape different segments can be divided into Demolding of the workpiece can be moved away from the workpiece are to create bulbous undercut To ensure workpieces.
  • the device has embossing elements that in the areas of the flanges of the workpiece parts e.g. Generate expressions that help to fix each other and / or seal the workpiece parts.
  • the tool levels for inserting the workpiece with the Tool levels for removing the workpiece can match or be different.
  • the hydroforming process for manufacturing find bulbous, preferably closed hollow body at least two workpiece parts application, one of which at least one can be pre-shaped and one Has flange for sealing.
  • the workpiece parts are pressure-tight in the forming tool in the area of the flange pressed together by the hydroforming process deformed and separately using the hydroforming process or further processed together, the deformation against an engraving takes place, the parts of which after being deformed intersecting axes are movable away from each other.
  • there can also more than two workpiece parts one above the other in the Forming tool inserted and in the flange area with each other can be clamped and reshaped in a pressure-tight manner.
  • the invention creates a solution for the first time with which very bulbous undercut hollow body through IHV can be produced and which ensures that several workpiece parts can be created at the same time, which can then be edited either separately or together are. With separate processing of the workpiece parts and the subsequent joining to a hollow body is the Positioning advantageous.
  • the device is a deep-drawn part 1 Bowl and as workpiece part 2 a flat sheet round used.
  • the device consists of three in different areas of the tool upper area E1, middle area E2 and lower area Area E3.
  • the first division level T1 between the first Area E1 and the second area B2 lie between the Flanges 1.1 and 2.1 of the workpiece parts to be clamped 1 and 2.
  • In the upper area E1 there is an engraving 3, in the middle area E2 an engraving 4 and in the lower area an engraving 5, which together the correspond to the shape of the workpiece to be produced.
  • the engraving 3 forms the shape for the sheet metal blank (workpiece part 2) engravings 4 and 5 the bulged shape for the bowl (Output part 1).
  • the second division level T2 lies between areas E2 and E3 in the outermost Engraving point 4 and 5.
  • An additional shaped element F is in the engraving 5 arranged.
  • a pressure medium supply 6 is in the area E3 provided in the manner of a docking system.
  • Fig. 1 were both workpiece parts 1, 2 inserted into the device and the three areas E1, E2, E3 are closed. All Areas E1, E2, E3 are braced against each other and the Flanges 1.1 and 2.1 pressed in a pressure-tight manner.
  • the two Workpiece parts are not in contact with each other e.g. connected by welding or flanging, but are only mutually pressure-tight over the closing force of the System compressed to be pressure-tight.
  • FIG. 3 and 4 the upper region E1 in the direction of the axis A of Valuable parts 1, 2 vertically upwards.
  • the middle one Area E3 consists of four segments S1, S2, S3, S4 in this case horizontal (perpendicular to axis A of Workpiece parts 1, 2 to the outside, i.e. of the Workpiece parts 1, 2 are opened. Now he can high pressure formed hollow body W, which from the two workpiece parts 1 and 2 is formed from the Device can be removed. The two workpiece parts 1, 2 can now be processed separately or together become.
  • Form element F2 e.g. generated by embossing. (See Fig. 5). This is in the direction of the flanges 1.1 and 2.1 facing areas E1 and E2 a recess 7 and a corresponding embossing mold 8 is provided.
  • both can Workpiece parts 1 and 2 machined separately and are then added again to the hollow body W, whereby an exact position determination by the embossing guaranteed between the two workpiece parts 1 and 2 becomes.
  • the flange can also be used to seal other components be used, which is usually formed at IHV Components not possible due to the missing flange is.
  • the two starting parts can also be flanged in Flange area are non-detachably connected.
  • FIG. 6 A possible design variant after Hydroforming is shown in Fig. 6.
  • workpiece parts 1 and 2 in the form of deep-drawn bowls (dashed in the starting position Shown) application. These lie with their flanges 1.1, 2.1 to each other and are in this area pressed together to be pressure-tight.
  • the pressure medium supply takes place via a docking system 6, which between leads through the two flanges 1.1, 2.1.
  • the tool is divided into 4 areas.
  • the area E1 is in the representation acc. Fig. 6 in the top position.
  • area E2 on which the flange 2.1 of the second bowl (second Workpiece part 2) is applied.
  • area E3 arranged through which the flange 1.1 of the first Workpiece part 1 (bowl) is added.
  • the Areas E1 and E2 have an overall engraving 3 and both areas E3 and E4 an engraving 4, which the Determine the final shape of workpiece parts 1 and 2.
  • the Division level T1 lies between the areas E1 and E2 and the division level T3 lies between the areas E3 and E4 each in the area of the engravings 3, 4 with the largest External dimensions to ensure demolding.
  • the division level T2 lies in areas E2 and E3 the flanges 1.1 and 2.1 of the workpiece parts too be picked up and pressed.
  • the division levels T1 to T3 are perpendicular to the axis A of the workpiece parts 1 and 2.
  • the individual areas E1 to E4 can also in several segments S can be divided.
  • the two flanges 1.1 and 2.1 are also pressed fluid-tight and the two workpiece parts 1, 2 by pressurizing with the printing medium D formed.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Claims (6)

  1. Dispositif de fabrication, notamment de corps creux bombés en contre-dépouille avec ou sans rebord, au moyen d'un procédé de mise en forme sous haute pression interne, divisé, en fonction de la forme à donner à la pièce et du nombre de pièces à usiner (1, 2), en sections outil (E1, E2, E3, E4) situées dans différents plans, avec un système d'alimentation en moyens de pression, caractérisé en ce qu'une ou plusieurs sections outil (E1, E2, E3, E4) sont divisées, en fonction de la forme de la pièce, en différents segments (S, S1, S2, S3, S4) aptes à être écartés, selon des axes concourants, du corps creux (W) formé pour permettre d'en retirer celui-ci.
  2. Dispositif selon la revendication 1, caractérisé en ce qu'entre les sections outil (E1, E2, E3, E4) sont disposés des plans de joint (T1, T2, T3) situés dans les zones de gravure (3, 4) présentant les plus grandes dimensions extérieures.
  3. Dispositif selon la revendication 2, caractérisé en ce que les plans de joint (T1, T2, T3) sont perpendiculaires à l'axe de la pièce (A).
  4. Dispositif selon l'une ou plusieurs des revendications 1 à 3, caractérisé en ce que les sections outil (E1, E2, E3, E4) sont aptes à être écartées de la pièce selon une direction parallèle à l'axe de la pièce (A).
  5. Dispositif selon l'une ou plusieurs des revendications 1 à 4, caractérisé en ce que les segments (S) sont aptes à être écartés de la pièce selon une direction perpendiculaire à l'axe de la pièce (A).
  6. Dispositif selon l'une ou plusieurs des revendications 1 à 5, caractérisé en ce qu'il comporte des éléments d'estampage prévus dans la région du rebord (1.1, 2.1).
EP00103174A 1999-02-19 2000-02-16 Dispositif pour la fabrication de produits creux courbes contre-dépouillés par hydroformage Expired - Lifetime EP1029611B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19907247 1999-02-19
DE19907247A DE19907247C2 (de) 1999-02-19 1999-02-19 Vorrichtung zur Herstellung insbesondere bauchiger hinterschnittener Hohlkörper

Publications (3)

Publication Number Publication Date
EP1029611A2 EP1029611A2 (fr) 2000-08-23
EP1029611A3 EP1029611A3 (fr) 2001-05-23
EP1029611B1 true EP1029611B1 (fr) 2003-05-14

Family

ID=7898224

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00103174A Expired - Lifetime EP1029611B1 (fr) 1999-02-19 2000-02-16 Dispositif pour la fabrication de produits creux courbes contre-dépouillés par hydroformage

Country Status (4)

Country Link
US (1) US6966209B1 (fr)
EP (1) EP1029611B1 (fr)
AT (1) ATE240170T1 (fr)
DE (2) DE19907247C2 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20100568U1 (de) * 2001-01-13 2001-03-08 Erlau Ag Eisen Drahtwerk Abschlußprofil für eine Trag- und/oder Haltefläche sowie Objektmöbel mit einem solchen Abschlußprofil
DE10141503C1 (de) * 2001-08-24 2002-10-10 Audi Ag Verfahren zur Herstellung eines länglichen Hohlkörpers
DE10249601B3 (de) * 2002-10-18 2004-05-06 Brandenburgische Technische Universität Cottbus Stabförmiges Trägerelement
CN100458351C (zh) 2003-10-02 2009-02-04 贝洱两合公司 用于汽车的增压空气冷却器
DE10350145B4 (de) * 2003-10-28 2006-04-13 Daimlerchrysler Ag Erzeugen von IHU-Bauteilen mit Flansch
US7251973B2 (en) * 2005-09-12 2007-08-07 Gharib Mohamed T Hydroforming apparatus
TWI383847B (zh) * 2009-12-31 2013-02-01 Metal Ind Res & Dev Ct 用以製造金屬殼的模具以及金屬殼的製造方法
US8683837B2 (en) * 2010-01-12 2014-04-01 Novelis Inc. Methods of pressure forming metal containers and the like from preforms having wall thickness gradient
CA2839983C (fr) 2011-08-19 2019-01-15 Magna International Inc. Insert retractable a auto-compensation pour outils de formage a temperature elevee
DE102016220221A1 (de) 2016-10-17 2018-04-19 Bayerische Motoren Werke Aktiengesellschaft Werkzeug zum Innenhochdruckumformen sowie Verfahren zum Umformen eines Werkstücks durch Innenhochdruckumformen
DE102018203987B3 (de) * 2018-03-15 2019-03-21 Bayerische Motoren Werke Aktiengesellschaft Werkzeug zum Umformen sowie Verfahren zum Herstellen eines Bauteils und Verwendung eines Werkzeugs

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2728317A (en) * 1951-10-23 1955-12-27 Walton S Clevenger Apparatus for hydraulic die forming
DE2361215A1 (de) * 1973-12-08 1975-06-12 Volkswagenwerk Ag Verfahren zur herstellung von hohlkoerpern
US4331284A (en) * 1980-03-14 1982-05-25 Rockwell International Corporation Method of making diffusion bonded and superplastically formed structures
JPS5966941A (ja) * 1982-10-07 1984-04-16 Mitsubishi Heavy Ind Ltd モ−ルドの製造方法
DE19535870C2 (de) * 1995-07-24 2002-07-11 Blz Gmbh Verfahren zum Herstellen von schalenförmigen Hohlstrukturen aus gedoppelten Blechzuschnitten mittels Innenhochdruckumformen
US5671629A (en) * 1996-02-15 1997-09-30 Valyi; Emery I. Hydrostatic forming device and process
US5692406A (en) * 1996-09-27 1997-12-02 Mcdonnell Douglas Corporation Gas inlet for a superplastic forming die and method of use
BR9714374A (pt) * 1996-12-03 2000-03-21 Elpatronic Ag Processo para a fabricação de uma peça perfilada a
DE19651658A1 (de) * 1996-12-12 1998-06-18 Krupp Ag Hoesch Krupp Verfahren zum Herstellen von Formteilen
DE19719426B4 (de) * 1997-05-12 2005-06-16 Dr. Meleghy Hydroforming Gmbh & Co. Kg Verfahren und Vorrichtung zum Herstellen eines Hohlkörpers
DE19732413B4 (de) * 1997-07-28 2005-03-24 Forschungsgesellschaft Umformtechnik Mbh Verfahren und Vorrichtung zum kombinierten Hydro-Umformen von Metallblech

Also Published As

Publication number Publication date
EP1029611A3 (fr) 2001-05-23
US6966209B1 (en) 2005-11-22
DE19907247C2 (de) 2001-08-23
ATE240170T1 (de) 2003-05-15
EP1029611A2 (fr) 2000-08-23
DE50002132D1 (de) 2003-06-18
DE19907247A1 (de) 2000-08-31

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