EP0879657A2 - Procédé et dispositif de fabrication d'un corps creux - Google Patents

Procédé et dispositif de fabrication d'un corps creux Download PDF

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Publication number
EP0879657A2
EP0879657A2 EP98108298A EP98108298A EP0879657A2 EP 0879657 A2 EP0879657 A2 EP 0879657A2 EP 98108298 A EP98108298 A EP 98108298A EP 98108298 A EP98108298 A EP 98108298A EP 0879657 A2 EP0879657 A2 EP 0879657A2
Authority
EP
European Patent Office
Prior art keywords
tool
boards
hollow body
ihu
docking system
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
EP98108298A
Other languages
German (de)
English (en)
Other versions
EP0879657A3 (fr
EP0879657B1 (fr
Inventor
Michael Seifert
Thomas; Dr. Werle
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
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 EP0879657A2 publication Critical patent/EP0879657A2/fr
Publication of EP0879657A3 publication Critical patent/EP0879657A3/fr
Application granted granted Critical
Publication of EP0879657B1 publication Critical patent/EP0879657B1/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
    • B21D26/023—Deforming sheet bodies including an additional treatment performed by fluid pressure, e.g. perforating
    • 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
    • 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
    • B21D26/053—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
    • 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
    • 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
    • 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
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49924—Joining by deforming of parallel side-by-side elongated members
    • 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
    • Y10T29/53—Means to assemble or disassemble

Definitions

  • the invention relates to a method and a device for producing a hollow body, preferably from Sheet metal, such as an automobile hood, door or Like., in which the so-called hydroforming (IHU) process is used.
  • IHU hydroforming
  • German patent application 42 32 161 describes a process for producing a hollow body under Use of a basic body made of circuit boards, in which the hollow body by a combined application of the IHU and deep drawing processes becomes.
  • This proposal is characterized in that first the base body from two identical edge dimensions having printed circuit boards is produced, the one another placed and welded together at the edge will. After inserting the base body into a mold and the closing of the base body takes place by means of the above-mentioned process to a hollow body. After the forming process is finished, more will follow Processing steps.
  • the object of the invention based on a method for producing a hollow body in view of the constantly increasing time and cost pressure, especially in the automotive industry, more efficiently and thus more cost-effective and more flexible.
  • the method according to the invention solves this problem the features of the main claim.
  • the procedure is suitable especially for the production of multi-walled components, which are particularly suitable for body construction, such as automobile hoods and doors, tailgates and roofs, and can advantageously be in just one Tool.
  • the boards in Connection area preferably in the folded corner area plastically pressed, resulting in a more reliable seal leads.
  • the special IHU tool at least one further processing step during, overlapping and / or after the IHU process carried out.
  • processing steps include punching, punching, sealing including the at least prepared attachment of Fasteners and the like.
  • FIG. 1 is a special hydroforming tool 1, namely an hydroforming (IHB) tool shown with a plunger 2 and a press table 3.
  • the plunger 2 is up and down according to arrow A. removable.
  • the plunger 2 enters at the bottom Tool upper part 4.
  • Correspondingly is on the press table 3 attached the associated lower tool part 5.
  • Tool upper 4 and lower tool part 5 form when closed IHB tool 1 the hollow body negative mold, i.e. the boundary surface against which the one to be manufactured Hollow body is pressed through the IHU process, and what it gets its final, repeatable shape. It is conceivable to use this negative form with movable counter pressure parts for variable shaping of the ones to be manufactured To design hollow bodies.
  • a pressure medium supply is furthermore in the IHB tool 1 6 integrated in the manner of a docking system, too a lance 7 and a connection 8 with one not shown media storage belongs.
  • the docking system 6 is in this embodiment in the lower tool part 5 installed that his lance 7 towards of the hollow body 9 to be produced is movable and a constant supply of pressure medium through the connection 8 is guaranteed.
  • the docking system 6 could also between Tool upper part 4 and lower part 5 arranged the medium feed from the side in the hollow body 9 would take place.
  • IHB tool 1 To carry out further processing steps in the same IHB tool 1 makes it possible to add this timed and spatially corresponding to each other integrate associated tools, such as Punching tools 11 for making perforations and / or large openings in the hollow body.
  • Punching tools 11 for making perforations and / or large openings in the hollow body.
  • These recesses can be used, for example, for attachment of lanyards, the laying of lines and in the case of fluid receiving components for the supply or Outflow of the fluids can be used. Big breakthroughs are suitable for improving the vibration properties.
  • the starting sheet metal boards - at one Automotive hood can be the outer skin board 12 and one Inner frame board 13 - on a coil system cut and if possible the front sides - Based on the hood to be manufactured -
  • the outer skin boards 12 at an angle greater than 90 ° angled. The reason for bending at an angle greater than 90 ° is explained below. Should this Bending process cannot be integrated into the coil tool be a fold after cutting in one Preforming tool possible.
  • the ones to be connected Boards 12, 13 can be inserted into the IHB tool 1 with adhesive strips on the inside of the outer skin board 12 pre-fixed on the bevelled end faces will. These adhesive strips have in addition to the pre-fixing Effect the task of sealing the boards against each other as well as absorb vibrations and corrosion to avoid between the boards.
  • the lance 7 is designed such that during the forming no pressure medium can escape from the hollow body. This is done, for example, with a conical lance end reached.
  • These processing steps include enforcement of the flanks 14 for connecting the boards 12, 13 by means of individual stamps 18 which can be moved horizontally Ledge stamp 16 stored and relative to this are also horizontally movable, for example Hole operations in the outer skin board 12 and / or in the inner frame board 13 and the insertion larger openings in the inner frame board 13, the functions of which were explained above.
  • Punching can be done in different process variants be performed. For example, here are punching "inside”, punching “outside” and punching "with slugs remaining on the component”.
  • the punching or cutting tool moves with its punch end 19 during or too after hydroforming (s) into high pressure acted upon hollow body, remains during the forming there and thereby prevents the Print medium.
  • the punched slugs then remain in the hollow body.
  • Punching "outwards” takes place in two steps.
  • the hole or cutting tool moves in a first step 19 during the IHU process against the hollow body and penetrates so far into the wall that a predetermined breaking line arises; in the second step the tool 19 at high speed with maximum internal high pressure suddenly pulled back.
  • 3 to 7 is a particularly preferred embodiment the invention shown in his essential structure although the previously described corresponds, but by changing some details brings special advantages, namely on the one hand an optimized seal at the connection areas of the boards and on the other hand a simplified, in contrast to the previously described embodiment stationary docking system.
  • the optimized sealing is in this embodiment achieved according to the invention in that a Sealing edge made in the corner of the edge (see also Fig. 6) is, namely at the transition from the so-called “Frame” (that's the angled one in the drawings sheet metal or board edge area running vertically downwards) to the actual hollow body (here bonnet).
  • This eliminates angling or folding the boards before inserting them into the IHU tool Generate the side edges 14 - rather this area accordingly during the closing of the tool deformed - as well as the stamps 15, 16 and 18, which is a considerable Saving in construction costs means and the tool both in terms of its construction and also its additional controls essential simplified.
  • This is achieved through a modified Design of both the lower tool part 5 and also the upper tool part 4, which, as shown in FIG.
  • Corner weld like the one shown in Fig. 6 Force directions show from above or below and is not reached from the side, is denser and to manufacture more precisely because otherwise a relative large area to be sealed. It can also be used Adhesive strips for fixing the relative position and / or additional Seals are dispensed with.
  • the depressions 26a adapted head (27a) in the socket 26 is screwed so that the inner board 13 in the hole area according to the representation according to Fig. 7 funnel-shaped in adaptation to the conical head 27a and the depression 26a deformed.
  • FIG. 5 shows the arrangement of two such docking points, where docking point B is venting and the docking point C filling with one of the media mentioned the one that forms between the two boards Void serves in this area, as in FIG. 6 represented by the distance between the boards given is.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Body Structure For Vehicles (AREA)
EP98108298A 1997-05-12 1998-05-07 Procédé et dispositif de fabrication d'un corps creux Expired - Lifetime EP0879657B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19719426 1997-05-12
DE19719426A DE19719426B4 (de) 1997-05-12 1997-05-12 Verfahren und Vorrichtung zum Herstellen eines Hohlkörpers

Publications (3)

Publication Number Publication Date
EP0879657A2 true EP0879657A2 (fr) 1998-11-25
EP0879657A3 EP0879657A3 (fr) 1998-12-02
EP0879657B1 EP0879657B1 (fr) 2004-07-21

Family

ID=7828981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98108298A Expired - Lifetime EP0879657B1 (fr) 1997-05-12 1998-05-07 Procédé et dispositif de fabrication d'un corps creux

Country Status (9)

Country Link
US (2) US6418607B1 (fr)
EP (1) EP0879657B1 (fr)
AT (1) ATE271431T1 (fr)
BR (1) BR9806574A (fr)
CA (1) CA2237350A1 (fr)
CZ (1) CZ294559B6 (fr)
DE (2) DE19719426B4 (fr)
ES (1) ES2224309T3 (fr)
PL (1) PL187132B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10102711A1 (de) * 2001-01-22 2002-08-01 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Herstellen eines Hohlkörpers

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DE19907247C2 (de) * 1999-02-19 2001-08-23 Meleghy Hydroforming Gmbh & Co Vorrichtung zur Herstellung insbesondere bauchiger hinterschnittener Hohlkörper
DE19938847C2 (de) * 1999-08-17 2002-09-12 Alcan Gmbh Verfahren zur Herstellung eines Hohlkörpers
US20020003054A1 (en) * 2000-07-10 2002-01-10 Teruo Kamada Vehicular body panel or component part and method for manufacturing same
DE10047770A1 (de) * 2000-09-27 2002-04-11 Bayerische Motoren Werke Ag Rahmenstruktur, insbesondere Lehnenrahmen für einen Fahrzeugstuhl, umfassend wenigstens zwei Seitenholme und einen diese verbindenden oberen Querträger, jeweils aus Hohlprofilen
JP4082070B2 (ja) * 2001-05-10 2008-04-30 住友金属工業株式会社 金属板の液圧バルジ成形方法、金型および成形品
DE10162394A1 (de) * 2001-12-19 2003-07-03 Bayerische Motoren Werke Ag Fertigungsverfahren und Innenhochdruckumformwerkzeug zur Durchführung des Fertigungsverfahrens
US6672121B2 (en) * 2002-04-15 2004-01-06 General Motors Corporation Flat pinch hemming of aluminum panels
US6694790B2 (en) * 2002-04-17 2004-02-24 General Motors Corporation Mid plate process and equipment for the superplastic forming of parts from plural sheets
EP1560669B1 (fr) * 2002-11-12 2008-07-02 Magna International Inc. Procede de realisation d'article hydroforme avec ouverture
US6952941B2 (en) * 2003-12-05 2005-10-11 Ford Global Technologies, Llc Apparatus and method for forming an article and performing a secondary operation in-situ
DE10358500B4 (de) * 2003-12-13 2007-09-20 Daimlerchrysler Ag Lochstempel zum Herstellen von Lochungen in der Wandung von mit Innenhochdruck beaufschlagten hohlen Bauteilen
US7222912B2 (en) 2004-11-23 2007-05-29 Ford Global Technologies, Llc Automotive vehicle body with hydroformed cowl
DE102005047852B4 (de) * 2005-10-05 2007-07-26 Thyssenkrupp Drauz Nothelfer Gmbh Werkzeug und Verfahren zur Herstellung von Hohlräumen aufweisenden Blechteilen
DE102005055452B4 (de) * 2005-11-21 2008-09-25 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zum Hochdruckumformen
US7316150B1 (en) 2006-11-07 2008-01-08 Ford Motor Company Impact reduction apparatus for stretch draw dies
JP4448182B2 (ja) * 2008-05-22 2010-04-07 本田技研工業株式会社 パネル一体化方法
DE102011105282A1 (de) * 2011-06-10 2012-12-13 Claas Selbstfahrende Erntemaschinen Gmbh Verfahren und Vorrichtung zum Fertigen von mehrschaligen Bauteilen
US10189227B2 (en) * 2015-10-14 2019-01-29 GM Global Technology Operations LLC Tailored panel assembly and method of manufacturing the same
DE102016216255B4 (de) 2016-08-30 2025-09-11 Bayerische Motoren Werke Aktiengesellschaft Schneidwerkzeug, Befestigungssystem, Formwerkzeug und Verwendung eines Schneidwerkzeugs
CN112371841A (zh) * 2020-10-22 2021-02-19 中国航发贵州黎阳航空动力有限公司 一种高温合金波纹筒体隔热屏的成型方法
CN117862331B (zh) * 2024-03-11 2024-05-17 成都优拓优联科技有限公司 一种石油开采用封隔器本体的生产装置及方法

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10102711A1 (de) * 2001-01-22 2002-08-01 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Herstellen eines Hohlkörpers
DE10102711B4 (de) * 2001-01-22 2005-09-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zum Herstellen eines Hohlkörpers

Also Published As

Publication number Publication date
DE59811682D1 (de) 2004-08-26
PL187132B1 (pl) 2004-05-31
BR9806574A (pt) 2000-02-22
CZ294559B6 (cs) 2005-02-16
US20020042980A1 (en) 2002-04-18
CZ144398A3 (cs) 1999-08-11
ATE271431T1 (de) 2004-08-15
CA2237350A1 (fr) 1998-11-12
DE19719426A1 (de) 1998-11-19
EP0879657A3 (fr) 1998-12-02
PL326264A1 (en) 1998-11-23
DE19719426B4 (de) 2005-06-16
ES2224309T3 (es) 2005-03-01
EP0879657B1 (fr) 2004-07-21
US6820449B2 (en) 2004-11-23
US6418607B1 (en) 2002-07-16

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