WO2005061145A1 - Dispositif de façonnage par haute pression interne d'une ebauche - Google Patents

Dispositif de façonnage par haute pression interne d'une ebauche Download PDF

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Publication number
WO2005061145A1
WO2005061145A1 PCT/EP2004/012652 EP2004012652W WO2005061145A1 WO 2005061145 A1 WO2005061145 A1 WO 2005061145A1 EP 2004012652 W EP2004012652 W EP 2004012652W WO 2005061145 A1 WO2005061145 A1 WO 2005061145A1
Authority
WO
WIPO (PCT)
Prior art keywords
receiving space
blank
channel
lubricant
residual fluid
Prior art date
Application number
PCT/EP2004/012652
Other languages
German (de)
English (en)
Inventor
Jörg KÖLLN
Jens Schult
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
Priority to CA002548204A priority Critical patent/CA2548204A1/fr
Priority to US10/582,137 priority patent/US20070209418A1/en
Publication of WO2005061145A1 publication Critical patent/WO2005061145A1/fr

Links

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
    • B21D37/00—Tools as parts of machines covered by this subclass

Definitions

  • the invention relates to a device for the internal high pressure forming of a blank with the aid of a high pressure fluid, with a tool, which has a receiving space for a blank.
  • Hydroforming is becoming increasingly popular, especially in the automotive industry, for example to be able to manufacture chassis components.
  • undeformed blanks for example pipes
  • the geometry of a receiving space corresponds to the desired external geometry of the finished component.
  • High pressure fluid is applied to the blank so that the walls of the blank deform plastically and rest against the walls of the receiving space. This means that high-strength and complex components can be manufactured economically.
  • EP 0 771 598 AI is further developed according to DE 102 02 201 AI to the extent that in A lubricant flow is generated in the receiving space of the tool, so that the forming process can be supported even more effectively.
  • the problem with the devices for hydroforming known from the prior art is that, after the actual shaping process, residual fluid collects in the receiving space.
  • This residual fluid can have portions of high-pressure fluid, lubricants and / or air pockets.
  • the residual fluid remains in the receiving space after the blank has been removed from the tool and can have a disruptive effect on a subsequent forming process.
  • the residual fluid enclosed in the receiving space is essentially incompressible, so that there is a risk that a blank to be formed during the forming process cannot assume the geometry specified by the wall of the receiving space and in an area in which residual fluid is present in the receiving space , remains undeformed.
  • the object of the present invention is to improve a device mentioned at the outset in such a way that a repeatable good process quality is ensured.
  • the tool has at least one channel opening into the receiving space, through which the residual fluid located in the receiving space can be removed from the receiving space.
  • the residual fluid consists essentially of high-pressure fluid, but can also contain dirt gel, residues of lubricant and / or air pockets.
  • the at least one channel ensures that the receiving space can be dewatered or ventilated before the start of a forming process, so that a subsequent forming process is not influenced or disturbed by residual fluid present in the receiving space.
  • suction means can be provided with which the channel can be subjected to a vacuum.
  • a suction pump can be provided, which is connected to the at least one channel, so that high-pressure fluid, lubricant residues and / or air can be sucked out of the receiving space.
  • a pressure supply can also be present. With this pressure supply, the duct can be pressurized. An overpressure can thus be built up in the region of the mouth of the channel in the receiving space, as a result of which residual fluid present in the receiving space is pressed out of the receiving space through the channel.
  • the tool can have lines leading into the receiving space for the supply and / or removal of lubricant. These lines can be suitable for one transport direction in each case or for both transport directions, that is to say both for the supply and also for the removal of lubricant.
  • the channel through which residual fluid located in the receiving space can be removed from the receiving space is also suitable for the supply and / or removal of lubricants.
  • This can the tool has a particularly simple structure, since in comparison to separate channels and lines only at least one channel is required.
  • the invention further relates to a method for operating a device for internal high pressure forming of a blank, which is characterized in that residual fluid located in the receiving space of a tool is removed through a channel from the receiving space before the forming of a blank, then lubricant is supplied to the receiving space and the interior of the High pressure fluid is applied to the blank. This removal can be supported by applying negative or positive pressure to the duct.
  • the invention relates to a further method for operating a device for internal high-pressure forming of a blank, which is characterized in that residual fluid located in the receiving space prior to the forming of a blank is transported out of the receiving space through the channel by supplying lubricant to the receiving space to displace the residual fluid. and that the interior of the blank is then subjected to high pressure fluid.
  • Figure 1 is a sectional side view of a first device for hydroforming during the removal of residual fluid by suction
  • Figure 2 shows the device of Figure 1 while supplying lubricant
  • Figure 3 is a sectional side view of a second device for hydroforming during the removal of residual fluid by displacement with lubricant.
  • the device designated overall by reference number 2 in FIG. 1 has an upper tool half 4 and a lower tool half 6.
  • the tool halves 4 and 6 delimit a receiving space 8, the wall 10 of which corresponds to the outer geometry of a shaped part to be produced.
  • a still undeformed, tubular blank 12 is inserted in the receiving space 8, the outer skin 14 of which lies against the wall 10 of the receiving space 8 during the shaping process.
  • the blank 12 can be sealed laterally with the aid of axial cylinders 16 and 18, the axial cylinder 18 having a line 20 for a high-pressure fluid supply (not shown).
  • High-pressure fluid can be introduced into the cavity of the blank 12 through the line 20, so that the latter can be deformed.
  • the lower tool half 6 has three channels 22, 24 and 26 opening in the receiving space 10. These are connected to a collecting channel 28.
  • the upper tool half has 4 channels 30, 32 and 34, which are also in the Recording space 8 of the device 2 open and lead to a collecting channel 36.
  • the collecting duct 36 of the upper tool half 4 and the collecting duct 28 of the lower tool half 6 lead to a common main duct 38.
  • the main channel 38 is connected to suction means, not shown, for example a vacuum pump.
  • suction means for example a vacuum pump.
  • residual fluid 40 located in the receiving space 10 can be removed from the receiving space 8 in accordance with the flow directions indicated by the arrows in the channels 22 to 38.
  • Residual fluid 40 may include high pressure fluid, lubricant residues, and / or air pockets.
  • the receiving space 8 can be dewatered and vented, so that a subsequent forming process of the blank 12 is not disturbed by residual fluid present in the receiving space 8.
  • FIG. 2 shows the device 2 according to FIG. 1 in a subsequent process step.
  • the axial cylinders 16 and 18 are moved relative to the position shown in FIG. 1 in the direction of the receiving space 8, so that the axial cylinders 16 and 18 lie against the blank 12 in a sealing manner.
  • a high-pressure fluid can now be supplied through line 20.
  • the channels 22 to 38 can be used in order to supply the receiving space 8 with a lubricant designated by 42.
  • the main channel 38 is coupled to a lubricant supply.
  • the lubricant 42 reaches the receiving space 8 in the region of the mouths of the channels 22 to 26 or 30 to 34.
  • FIG. 3 shows a device 2 'which is similar to device 2 according to FIGS. 1 and 2.
  • the reference symbols used in FIG. 3 are identical insofar as there are similarities with the device 2 according to FIGS. 1 and 2.
  • the lower tool half 6 of the device 2 ' has channels 22, 24 and 26 which lead to a collecting channel 28'. Residual fluid 40 located in the receiving space 8 of the device 2 'can be removed through the collecting duct 28'.
  • the upper tool half 6 of the device 2 ' has channels 30, 32 and 34 which lead to a collecting channel 36'.
  • Lubricant 42 can be supplied to the receiving space 8 of the device 2 'through the collecting channel 36'.
  • the collecting channels 28 'and 36' of the device 2 'according to FIG. 3 are not connected to one another.
  • residual fluid 40 located in the receiving space 8 of the device 2 ' can be removed from the receiving space 8 by supplying lubricant 42 through the collecting duct 36' which enters the receiving space 8 via the ducts 30 to 34. There it displaces residual fluid 40 located in the receiving space 8, which can be discharged via the channels 22 to 26 and finally via the collecting channel 28 '.

Abstract

L'invention concerne un dispositif (2,2') destiné au façonnage par haute pression interne d'une ébauche (12) à l'aide d'un fluide haute pression. Ce dispositif comprend un moule (4, 6) présentant une empreinte (8) destinée à l'ébauche. Le moule a au moins un canal (22, 24, 26, 30, 32, 34) qui débouche dans l'empreinte et permet d'évacuer de l'empreinte le fluide résiduel restant dans l'empreinte. L'invention concerne également un procédé permettant de faire fonctionner un dispositif de façonnage par haute pression interne d'une ébauche.
PCT/EP2004/012652 2003-12-09 2004-11-09 Dispositif de façonnage par haute pression interne d'une ebauche WO2005061145A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002548204A CA2548204A1 (fr) 2003-12-09 2004-11-09 Dispositif de faconnage par haute pression interne d'une ebauche
US10/582,137 US20070209418A1 (en) 2003-12-09 2004-11-09 Method for Internal High-Pressure Deformation of a Blank

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10357341A DE10357341B4 (de) 2003-12-09 2003-12-09 Vorrichtung und Verfahren zur Innenhochdruckumformung eines Rohlings
DE10357341.0 2003-12-09

Publications (1)

Publication Number Publication Date
WO2005061145A1 true WO2005061145A1 (fr) 2005-07-07

Family

ID=34672499

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/012652 WO2005061145A1 (fr) 2003-12-09 2004-11-09 Dispositif de façonnage par haute pression interne d'une ebauche

Country Status (4)

Country Link
US (1) US20070209418A1 (fr)
CA (1) CA2548204A1 (fr)
DE (1) DE10357341B4 (fr)
WO (1) WO2005061145A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008043432A1 (fr) * 2006-10-12 2008-04-17 Daimler Ag Procédé et dispositif de production d'un élément composite

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10337383B4 (de) * 2003-08-13 2005-12-08 Thyssenkrupp Drauz Gmbh Verfahren zum Innenhochdruckumformen von konischen Rohren aus Metall
DE102007019511B3 (de) * 2007-04-25 2008-11-13 Benteler Automobiltechnik Gmbh Vorrichtung und Verfahren zum Innenhochdruckumformen eines Verbundmetallrohres
AU2008267713A1 (en) * 2007-06-22 2008-12-31 Advanced Applied Physics Solutions, Inc. Higher pressure, modular target system for radioisotope production
DE102007043316B4 (de) * 2007-09-12 2009-08-20 Schulze, Bernd, Dr.-Ing. Verfahren und Vorrichtung zur Herstellung eines Ausbuchtungen aufweisenden Werkstückes mittels eines Druckmediums
CN103691796A (zh) * 2013-12-31 2014-04-02 一重集团大连设计研究院有限公司 一种大型内高压成形模具
CN112496138A (zh) * 2020-11-09 2021-03-16 保隆(安徽)汽车配件有限公司 一种内高压成型模具以及工件的成型方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126510A (en) * 1982-08-27 1984-03-28 Vitkovice Zdarske Strojirny A Tool for manufacture of shaped workpieces
DE19944722A1 (de) * 1999-09-17 2001-04-12 Walter Panknin Umformwerkzeug
DE10202201A1 (de) * 2002-01-22 2003-07-31 Porsche Ag Verfahren zum Umformen und Vorrichtung hierfür

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0771598A1 (fr) * 1995-11-09 1997-05-07 Benteler Ag Procédé pour diminuer le frottement lors du formage hydraulique par haute pression interne et dispositif pour le formage hydraulique
DE19628688C1 (de) * 1996-07-17 1997-11-20 Siempelkamp Pressen Sys Gmbh Umformpresse für die Innenhochdruckumformung von hohlen Rohlingen
DE10150092C1 (de) * 2001-10-11 2003-04-03 Salzgitter Antriebstechnik Gmb Verfahren zum Beschicken von IHU-Pressen und Einrichtung zur Durchführung des Verfahrens

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126510A (en) * 1982-08-27 1984-03-28 Vitkovice Zdarske Strojirny A Tool for manufacture of shaped workpieces
DE19944722A1 (de) * 1999-09-17 2001-04-12 Walter Panknin Umformwerkzeug
DE10202201A1 (de) * 2002-01-22 2003-07-31 Porsche Ag Verfahren zum Umformen und Vorrichtung hierfür

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008043432A1 (fr) * 2006-10-12 2008-04-17 Daimler Ag Procédé et dispositif de production d'un élément composite
US8241552B2 (en) 2006-10-12 2012-08-14 Daimler Ag Method and apparatus for producing a composite component

Also Published As

Publication number Publication date
DE10357341A1 (de) 2005-07-14
US20070209418A1 (en) 2007-09-13
DE10357341B4 (de) 2006-02-09
CA2548204A1 (fr) 2005-07-07

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