EP1216769A2 - Pocédé et dispositif de fabrication d' un profilé creux fermé - Google Patents

Pocédé et dispositif de fabrication d' un profilé creux fermé Download PDF

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Publication number
EP1216769A2
EP1216769A2 EP01129173A EP01129173A EP1216769A2 EP 1216769 A2 EP1216769 A2 EP 1216769A2 EP 01129173 A EP01129173 A EP 01129173A EP 01129173 A EP01129173 A EP 01129173A EP 1216769 A2 EP1216769 A2 EP 1216769A2
Authority
EP
European Patent Office
Prior art keywords
blank
hollow profile
membrane
pressure
tool
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
EP01129173A
Other languages
German (de)
English (en)
Other versions
EP1216769A3 (fr
EP1216769B1 (fr
Inventor
Kai-Uwe Dudziak
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.)
Daimler AG
Original Assignee
DaimlerChrysler 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
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1216769A2 publication Critical patent/EP1216769A2/fr
Publication of EP1216769A3 publication Critical patent/EP1216769A3/fr
Application granted granted Critical
Publication of EP1216769B1 publication Critical patent/EP1216769B1/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
    • 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
    • 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
    • B21D26/027—Means for controlling fluid parameters, e.g. pressure or temperature
    • 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
    • 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 method for producing a comprehensive closed hollow profile according to the preamble of Claim 1 and a device for performing the same according to the preamble of claim 9.
  • a generic method or a generic device is known from EP 0913 277 A1.
  • Out of this is one Wishbone of a wheel suspension can be removed from a tube is manufactured by means of hydroforming.
  • the wishbone has various cross-sectional shapes, one being a flattened one Represents rectangle.
  • To form this form the circular cylindrical pre-bent tube into a two-part hydroforming tool inserted and during the closing process squeezed together by the two die parts. Then will when the tool is closed, the pipe is expanded using internal high pressure, until it fits the contour of the die and thus the desired rectangular flat final shape should be obtained.
  • the other is the contour of the support surface of the stamp unchangeable, so that the installation of the pipe - is it during the squeezing process or be it during the expansion phase - is never evenly distributed, which is too uneven Supporting the pipe leads and therefore to failure of the Pipe at this supported point or in the adjacent Areas to the counterhold.
  • the invention has for its object a generic Method and a corresponding generic device in this regard to further develop that in a simple manner a hollow profile is made possible, even with large Widening of the hollow profile (greater than or equal to the Elongation at break of the material) the process safety in sufficient Dimensions is guaranteed.
  • the task is according to the invention by the features of the claim 1 regarding the procedure and the characteristics of claim 9 with respect to the device.
  • the membrane becomes a flexible counter-holder trained of any shape of the hollow profile blank during the expanding forming process and also with others Forming processes true to the contour and large-area over a relative Adjust the large part circumferential area of the hollow profile blank can.
  • the contour-fitting one achieved by the external pressurization Expansion and supporting force of the membrane can be caused by the easy-to-use control parameters of the print very to be adapted precisely to the progress of forming. All in all, So through the large-scale system - when using several diaphragm distributed in the circumferential direction is more completely circumferential Plant - during every forming phase and through the exact
  • the hollow profile blank to be formed receives support force metering always the appropriate uniform support force, the failure of the blank material prevented during expansion.
  • a device 1 for producing a circumferentially closed flattened hollow profile 2 (Fig. 4) shown, which essentially consists of one divided into two side tools Internal high pressure forming tool, a membrane 12 and one Flattening device exists.
  • the side tools can each be formed in one piece, with a pressure medium supply 20 is incorporated there.
  • the side Tools also in several parts, in an upper side tool 3 and a lower side tool 4 can be divided, designed, where in the parting line of the two side tools 3 and 4 Print medium feed 20 can run.
  • a manipulator can be used with a blank 10, the blank 10 until the two pairs of side tools 3.4 closed like a jaw around the blank 10.
  • the hollow profile can be shaped into simple way when moving the side tools 3 and 4 solely by the action of gravity the forming tool be removed.
  • the upper side tool 3 with a removable cover part train so that the loading of the forming tool at up to the lid part closed side tools 3.4 over the opening of the cover part which is created in the absence of the cover part Forming tool without the use of blank-holding manipulators can be done. Only after the cover part the assembly opening closes, the forming can then begin.
  • the finished hollow profile can be removed in the same way as in the variant of the forming tool described above by gravity.
  • the flattening device is the pair of side tools 3 and / or the pair of side tools 4 by means of a corresponding designed engraving itself can be included in the present Embodiment
  • the flattening device two opposite one another stamps 6 and 7 aligned with one another, which in Bushings 8 of the upper pair of side tools 3 and lower pairs of side tools 4 are slidably guided and the ones formed by the side tools 3 and 4 Molding space 9, in which the initially circular cylindrical cross-section equipped hollow profile blank 10 is accommodated, are retractable, whereby they squeeze the blank 10 can.
  • Stamp is also conceivable Stamp.
  • the stamps 6 and 7 can be adapted to the longitudinal extent of the hydroforming tool and thus to the entire deformable part of the hollow profile blank 10 continuously trained or alternatively only locally to act on a Part of the blank 10 may be arranged.
  • the stamp 6.7 have a flat end face so that on the one hand the required flat final shape of the hollow profile 2 is reached and on the other hand, on the blank 10, no process security hazards Notches due to sharp-edged unevenness on the stamp surface arise.
  • the stamp 6 and 7 is to the side of the field of engagement trending, which can be identical to the mold space 9, at the Tool inner side 11 an elastic membrane 12, for example consisting of an elastomer or a rubber attached.
  • the membrane 12 can be fastened in a variety of ways be, for example, insoluble by gluing, screwing, Riveting and the like.
  • the membrane 12 advantageously replaceable when worn both transverse to the longitudinal extension of the tool and parallel to the stamps 6 and 7 lying flange-like ends 13 in each a holder 14 added.
  • the holder 14 is detachable on the inside 11 of the tool attached, the holder 14 an open to the inside 11 has the recess for the membrane 12 forming recess 15, between their walls and the opposite wall section 16 the inside of the tool 11 the membrane flanges 13 are trapped.
  • the membrane 12 between its flanges 13 in non-use position, i.e. in a relaxed location the membrane 12 is U-shaped, in order to have a greater range for the method explained later to get into the mold space 9.
  • the shape of the Membrane 12 is longitudinal in the inside 11 of the tool of the central part 17 of the membrane 12 extending recess 18th incorporated to accommodate the membrane 12 so far that in the Non-use position of the membrane 12 and in the last forming phase of the blank 10 the mold space 9 membrane-free and thus the membrane 12 on the one hand when loading the molding space 9 with a blank 10 is not a hindrance and on the other hand during withdraw the deformation of the blank 10 from the molding space 9 can.
  • a channel-like pressure medium feed opens into the recess base 19 20 from the one located outside the tool Pressure generator is connected.
  • the membrane 12 covers thus the recess 18 including the mouth of the pressure medium supply 20 high pressure tight, which means when the pressure medium is introduced between the recess reason 19 and the one facing it Outside 21 of the membrane 12, a pressure chamber 22 is formed becomes. Due to the formation of the recess 18, the over the pressure medium conveyed pressure evenly over the entire - with the exception of the clamped flanges 13 - membrane 12 distributed, so that local damage-related stretching of the membrane 12 avoided when pressurized and the desired System to the hollow section blank 10 to a sufficient extent a partial circumferential area of the blank 10 can be reached.
  • the Pressure medium can be gaseous, but is due to this of its incompressible properties that support it are very advantageous during the forming of the blank 10, a pressurized fluid.
  • the blank 10 only on several of each other spaced longitudinal sections by expanding and flattening to be reshaped.
  • the blank 10 can be defined by blank section specific Pressure controls of the pressure fluid each different according to the desired hollow profile cross-sectional shape be strongly supported.
  • the membrane 12, however, can also in a low-cost manner along the entire molding space of the tool, even where only one of the two forming steps, expansion and flattening, or also no reshaping takes place.
  • the hollow profile blank 10 is thus over its entire longitudinal extent from the membrane 12 supported.
  • the pressure in the pressure chamber 22 is dependent on the progress of the forming controllable. This can be done by controlling the pressure generator or by controlling a pressure relief valve.
  • the hydroforming tool instead of side tools 3,4 an upper and a lower includes a lower tool, whereby the assembly of the Molding space 14 can run relatively easily.
  • the membrane 12 connects the upper tool to the lower tool, the Membrane 12 stretched when opening and closing the tool and compresses, causing the membrane 12 to increase wear is exposed.
  • this can be done by a removable only cover part covering the molding space in the upper tool bypassed, the membrane 12 in the opening and Closing movement of the forming tool remains unstressed.
  • the arrangement would be such that a membrane 12 in Lower tool and a membrane 12 arranged in the upper tool is, the middle part 17 of the membrane 12 is now horizontal runs.
  • the pressure medium feed 20, which is then according to the Drawings exactly in the parting line of the upper tool and lower tool lies and thus of a groove-shaped Groove of both tool halves can be formed in the alternative described separately both in the lower tool and also to be provided in the upper tool.
  • the IHU tool can be used for this Execution can be opened and closed without the Membrane 12 is mechanically stressed in any way, which on the one hand minimizes the wear of the membrane and on the other hand the accessibility to the tool placement area optimized.
  • the membrane 12 is pressurized from the pressure chamber 22, which is thereby located on a partial circumferential area of the blank 10 and is applied to a section of the stamp end faces 5 (Fig. 2).
  • a fluidic internal high pressure By generating a fluidic internal high pressure then the blank 10 expanded, being throughout Expansion of the membrane 12 to the blank 10 under pressure is pressed on said partial circumference area.
  • the membrane 12 supports this material soothing and shape retaining, so that the expansion phase is completely reliable (Fig. 3).
  • the expanding blank 10 urges the membrane 12 to Pressure chamber 22 back, with the increasing the degree of expansion Support pressure in the pressure chamber 22 continuously adjusted reduced becomes.
  • the membrane 12 on the blank during expansion 10 is present, there is no or very little friction of the Blank material on the membrane 12, since this is not massive and deforms elastically.
  • the diameter of the blank 10 is roughly like this after expansion has been completed as large as the stamp width.
  • the blank 10 is not inevitably be supported by the membrane 12 and under one fluidic support pressure that is less than the expansion pressure can, must be, it is for further process security advantageous if this is given.
  • the blank 10 wrinkle-free in a flattened final shape of the circumferentially closed Hollow profile 2 pressed with a rectangular cross section.
  • the blank 10 is widened further without damage, until it has reached its final shape.
  • the flattening Widening complements that created by widening Most of the total broadening.
  • the blank 10 is constantly supported and during the flattening pressurized by the membrane 12 so that in reaching the level of the flattened blank 10 with the outside 23 the stamp 6, 7 the lateral end contour of the hollow profile 2 is trained.
  • the middle part 17 of the membrane 12 is located longitudinally on the outside 23 of the stamp 6,7. Even with flattening the pressure in the pressure chamber 22 is successively reduced, so that the membrane 12 up to the achieved flushness of the End contour of the hollow profile 2 supporting wall 24 with the outside of the punch 23 can shrink elastically.
  • the device according to the invention enables compared to previous Process engineering that two in the molding direction different manufacturing steps, usually in two Production stages would have to be generated in a high-pressure process can be displayed. Furthermore you can with the flexible membrane 12 workpieces with widenings be realized due to their geometric design and the associated friction between the workpiece and tool can not be reliably formed. For example the workpieces mentioned can be long IHU components act, the narrowly tapering expansion areas must have, as in the motor vehicle body construction under crossmember running the windbreak.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP01129173A 2000-12-23 2001-12-08 Pocédé et dispositif de fabrication d' un profilé creux fermé Expired - Lifetime EP1216769B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10065033A DE10065033C1 (de) 2000-12-23 2000-12-23 Verfahren zur Herstellung eines umfänglich geschlossenen Hohlprofiles und eine Vorrichtung zur Durchführung desselben
DE10065033 2000-12-23

Publications (3)

Publication Number Publication Date
EP1216769A2 true EP1216769A2 (fr) 2002-06-26
EP1216769A3 EP1216769A3 (fr) 2003-11-19
EP1216769B1 EP1216769B1 (fr) 2005-10-12

Family

ID=7668996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01129173A Expired - Lifetime EP1216769B1 (fr) 2000-12-23 2001-12-08 Pocédé et dispositif de fabrication d' un profilé creux fermé

Country Status (4)

Country Link
US (1) US6634198B2 (fr)
EP (1) EP1216769B1 (fr)
CA (1) CA2366209C (fr)
DE (2) DE10065033C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003095122A1 (fr) * 2002-05-08 2003-11-20 Flow Holdings Sagl Dispositif et procede de formage par expansion

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60113595T2 (de) * 2000-06-16 2006-05-18 Nippon Steel Corp. Formschliessvorrichtung und Formschliessverfahren
DE10121787C1 (de) * 2001-05-04 2002-07-11 Daimler Chrysler Ag Verfahren und Vorrichtung zur Herstellung von Nebenformelementen
DE102005013689B3 (de) * 2005-03-21 2006-01-05 Forschungsgesellschaft Umformtechnik Mbh Vorrichtung und Verfahren zum Trennen oder Lochen eines nach dem Innenhochdruckumformverfahren hergestellten Werkstücks
DE102006012625C5 (de) * 2006-03-20 2010-06-17 Audi Ag Verfahren zur Herstellung von Profilen
US7827838B2 (en) * 2008-05-05 2010-11-09 Ford Global Technologies, Llc Pulsed electro-hydraulic calibration of stamped panels
CN110450268B (zh) * 2019-09-12 2024-07-12 广东金马领科智能科技有限公司 高压注浆成型生产线、成型方法及系统
CN116944329B (zh) * 2023-09-21 2023-12-12 太原理工大学 一种基于冲击液压原理用于板材加工的超高速成形装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0913277A1 (fr) 1997-10-29 1999-05-06 TRW Canada Ltd. Bras de commande et procédé pour sa fabrication

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US2423862A (en) * 1944-12-30 1947-07-15 Casimer E Vorobik Binding and covering apparatus
US3888098A (en) * 1974-02-27 1975-06-10 Boeing Co Liquid metal core transpactor elements for electromagnetic forming tools
US4840053A (en) * 1987-07-29 1989-06-20 Mitsui & Co., Ltd. Method for manufacturing a pipe with projections
DE4201819A1 (de) * 1991-01-28 1992-07-30 Mannesmann Ag Verfahren und vorrichtung zum hydraulischen aufweiten von rohrfoermigen hohlprofilen
US5829137A (en) * 1995-04-03 1998-11-03 Grassi; John R. Method for manufacturing wheels
US5813266A (en) * 1995-10-31 1998-09-29 Greenville Tool & Die Company Method of forming and piercing a tube
CA2296098C (fr) * 1997-07-18 2007-01-30 Cosma International Inc. Hydroformage d'une ebauche tubulaire presentant une coupe transversale ovale et appareil d'hydroformage
DE19733474C2 (de) * 1997-08-02 1999-12-09 Daimler Chrysler Ag Verfahren und Vorrichtung zur Herstellung von Nebenformelementen an Hohlprofilen
JP3206505B2 (ja) * 1997-08-06 2001-09-10 住友金属工業株式会社 金属管の液圧バルジ加工方法および液圧バルジ加工装置
US6415638B1 (en) * 1999-03-26 2002-07-09 Nissan Motor Co., Ltd. Method and device for forming tubular work into shaped hollow product by using tubular hydroforming
US6134931A (en) * 1999-05-26 2000-10-24 Husky Injection Molding Systems Ltd. Process and apparatus for forming a shaped article
DE10121787C1 (de) * 2001-05-04 2002-07-11 Daimler Chrysler Ag Verfahren und Vorrichtung zur Herstellung von Nebenformelementen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0913277A1 (fr) 1997-10-29 1999-05-06 TRW Canada Ltd. Bras de commande et procédé pour sa fabrication

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003095122A1 (fr) * 2002-05-08 2003-11-20 Flow Holdings Sagl Dispositif et procede de formage par expansion
US7509827B2 (en) 2002-05-08 2009-03-31 Avure Technologies Ab Device and method for expansion forming

Also Published As

Publication number Publication date
US20020088263A1 (en) 2002-07-11
DE50107673D1 (de) 2005-11-17
US6634198B2 (en) 2003-10-21
EP1216769A3 (fr) 2003-11-19
CA2366209C (fr) 2006-10-24
EP1216769B1 (fr) 2005-10-12
CA2366209A1 (fr) 2002-06-23
DE10065033C1 (de) 2002-07-11

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