EP0876858A2 - Procédé de fabrication d'un élément à partir d'une ébauche semi-finie et appareil de haute pression interne pour réaliser cet élément - Google Patents

Procédé de fabrication d'un élément à partir d'une ébauche semi-finie et appareil de haute pression interne pour réaliser cet élément Download PDF

Info

Publication number
EP0876858A2
EP0876858A2 EP98102322A EP98102322A EP0876858A2 EP 0876858 A2 EP0876858 A2 EP 0876858A2 EP 98102322 A EP98102322 A EP 98102322A EP 98102322 A EP98102322 A EP 98102322A EP 0876858 A2 EP0876858 A2 EP 0876858A2
Authority
EP
European Patent Office
Prior art keywords
semi
internal high
pressure tool
axial
des
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Withdrawn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
EP98102322A
Other languages
German (de)
English (en)
Other versions
EP0876858A3 (fr
Inventor
Uwe Dipl.-Ing. Von Der Herberg
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.)
ThyssenKrupp Technologies AG
Original Assignee
Fried Krupp AG Hoesch Krupp
ThyssenKrupp Automotive 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 Fried Krupp AG Hoesch Krupp, ThyssenKrupp Automotive AG filed Critical Fried Krupp AG Hoesch Krupp
Publication of EP0876858A2 publication Critical patent/EP0876858A2/fr
Publication of EP0876858A3 publication Critical patent/EP0876858A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B21D26/045—Closing or sealing means

Definitions

  • the invention relates to a method for manufacturing a component from a semi-finished product with closed Cross section with one or more chambers by means of a two-part or multi-part internal high-pressure tool with a cyclically producible and releasable Sealing system with which a seal between the Internal high pressure tool and the semi-finished product to be formed is effected, the semi-finished product to be formed in the High pressure tool is inserted.
  • the invention also relates to an internal high pressure tool for the Execution of the procedure.
  • Non-planes Semi-finished products In the manufacture of components using the Hydroforming and the use of non-planes Semi-finished products can only achieve high degrees of deformation through the Adjustable hydraulic cylinders can be achieved, the forces in the axial direction of the semi-finished product introduce the end face of the semi-finished product.
  • Under non-levels Semi-finished products are all semi-finished products with a closed one Cross section with one or more chambers To understand chambers, in principle pipes and hollow profiles all manufacturing and manufacturing processes and all material grades.
  • the contact area between the internal high pressure tool and the semi-finished product be sealed in such a way that the discharge of pressure medium prevented or at least significantly limited so that the internal pressure necessary for the forming is not affected.
  • the semi-finished products are the Type of scope extensions mentioned at the beginning, beginning from a few percent up to a hundred percent and more, over an area or over several areas with Extensions of several hundred millimeters in of particular importance.
  • the known sealing systems very disadvantageous to the Contact surfaces between the tool wall and the outer Impact surface of the semi-finished product, because doing so Semi-finished products due to the strong internal pressure against the Tool wall is pressed so that high contact forces arise. Due to the induced high frictional forces would thus be the desired relative movement between Semi-finished products and tools are prevented with longer sliding distances and at least with shorter sliding distances be significantly hampered.
  • US Pat. No. 5,321,964 shows a sealing device for an internal high pressure forming press for the Internal high pressure forming of pipes.
  • This is a tube in a two-part hydroforming tool placed. This tool then becomes radial to the pipe seen closed, then the forehead by means of one axially retractable towards this end Sealing stamp, which is a two-part, namely one inner and a separate outer recording of the Has tube end is sealed. Then follows the internal high pressure forming of the tube at stationary sealing stamp, i.e. the sealing stamp therefore does not actively participate in Internal high pressure forming of the pipe. This also means that this reshaping always involves ironing and this is accompanied by a reduction in wall thickness.
  • U.S. Patent 4,414,834 shows only one Process and tool for normal expanding in an open tool with upsetting in then closed tool, whereby only short thin-walled Pipes in a press with closing direction in the pipe axis are essentially reshaped by the press force.
  • the invention has for its object the disadvantages to avoid the known methods and a method for the production of a component from a semi-finished product design that the relative movement between tools and semi-finished products are not hindered by frictional forces and thus the forming process is facilitated without Material ironing even for long and thick-walled ones Semi-finished products.
  • the internal high-pressure tool consists of an upper part 1, a lower part 2 and at least one axial punch 4 with its driving axial cylinder with the piston rod 3 and its holding plate. After the semi-finished product 5 is introduced into the internal high-pressure tool the upper part 1 lowered onto the lower part 2 and thus the tool closed (Fig. 2).
  • the axial punch 4 has a one-piece inner 6 and outer receptacle 7, between which the to be reshaped Area of the semi-finished product 5 is introduced. It lies down the end of the area of the semi-finished product 5 to be formed against that between the inner receptacle 6 and the outer Recording 7 of the axial punch 4 provided end face 8 on.
  • the semi-finished product 5 is formed by advancing the axial ram 4 by means of the piston rod 3.
  • Component 5 'on the inner wall of the high pressure tool - In the performance example shown on the inner wall of the lower part 2 of the internal high-pressure tool and the axial punch 4 is in the 4 ' designated position.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP98102322A 1997-05-09 1998-02-11 Procédé de fabrication d'un élément à partir d'une ébauche semi-finie et appareil de haute pression interne pour réaliser cet élément Withdrawn EP0876858A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19719676 1997-05-09
DE1997119676 DE19719676A1 (de) 1997-05-09 1997-05-09 Verfahren zur Herstellung eines Bauteils aus einem Halbzeug und Innenhochdruckwerkzeug für die Durchführung des Verfahrens

Publications (2)

Publication Number Publication Date
EP0876858A2 true EP0876858A2 (fr) 1998-11-11
EP0876858A3 EP0876858A3 (fr) 2000-07-12

Family

ID=7829133

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98102322A Withdrawn EP0876858A3 (fr) 1997-05-09 1998-02-11 Procédé de fabrication d'un élément à partir d'une ébauche semi-finie et appareil de haute pression interne pour réaliser cet élément

Country Status (2)

Country Link
EP (1) EP0876858A3 (fr)
DE (1) DE19719676A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005036419B4 (de) * 2005-07-29 2015-05-21 Tower Automotive Hydroforming Gmbh & Co. Kg Vorrichtung zur Herstellung ausgebauchter Hohlprofile, insbesondere von Gasgeneratorgehäusen für Airbageinrichtungen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4414834A (en) * 1981-02-05 1983-11-15 Carrier Corporation Method for expanding tubular blanks
IT1226921B (it) * 1988-07-15 1991-02-22 Renato Beretta Procedimento e pressa per realizzare corpi tubolari sagomati a freddo.
CA2023675C (fr) * 1989-08-24 2001-07-31 Ralph E. Roper Methode et dispositif de formage d'un element tubulaire pour chassis
US5233856A (en) * 1992-05-29 1993-08-10 General Motors Corporation External seal unit for tube hydroforming
US5321964A (en) * 1993-06-04 1994-06-21 General Motors Corporation External seal device for tube hydroforming
DE19506067C1 (de) * 1995-02-22 1996-06-20 Krupp Ag Hoesch Krupp Verfahren zum Ausschneiden eines Ausschnitts aus der Wandung eines als Hohlkörper ausgebildeten Bauteils und Vorrichtung zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
EP0876858A3 (fr) 2000-07-12
DE19719676A1 (de) 1998-11-12

Similar Documents

Publication Publication Date Title
DE69817905T2 (de) Vorrichtung zum Hydroformen eines Rohres
DE2557764C3 (de) Verfahren und Vorrichtung zur Formung eines Tiefbettfelgenrohlings
EP1986801B1 (fr) PROCEDE ET DISPOSITIF DE Formation D'UNE DECOUPE OU D'UNE PERFORATION DANS LA PAROI D'UN COMPOSANT FORME PAR UN PROCEDE DE FACONNAGE SOUS HAUTE PRESSION INTERIEURE
DE2353209A1 (de) Tiefgezogener behaelter und verfahren zu seiner herstellung
DE19622372B4 (de) Verfahren und Vorrichtung zum Herstellen von Nockenwellen
DE10052142A1 (de) Zündkerzenherstellungsverfahren
DE3716176A1 (de) Verfahren und vorrichtung zum umformen von hohlkoerpern sowie verwendung des verfahrens bzw. der vorrichtung und dosenkoerper
DE60001263T2 (de) Dichtungsverfahren
DE19842750B4 (de) Verfahren und Herstellung von tiefgezogenen Hohlteilen und Ziehwerkzeug
DE19833006B4 (de) Verfahren und Vorrichtung zur Herstellung rohrförmiger gebogener Hohlkörper durch Innenhochdruckumformen
DE19839526C1 (de) Verfahren und Vorrichtung zum Umformen eines Hohlkörpers
DE102008014213A1 (de) Verfahren zum Herstellen von Werkstücken aus einem rohrförmigen Hohlprofilrohling durch Beaufschlagung mit einem hohen Innendruck
DE10056610A1 (de) Vorrichtung zur Innenhochdruck-Umformung von Hohlkörpern
EP1024913B1 (fr) Procede et dispositif pour produire un arbre a partir d'un element tubulaire
WO2005018846A1 (fr) Procede pour le formage a haute pression interne de tubes coniques en metal
DE19751408C2 (de) Verfahren und Vorrichtung zur Herstellung eines Integralgehäuses für Hydrolenkung
DE3906957A1 (de) Verfahren zur herstellung von rohrartigen bauteilen
EP0876858A2 (fr) Procédé de fabrication d'un élément à partir d'une ébauche semi-finie et appareil de haute pression interne pour réaliser cet élément
DE10207572B4 (de) Umformpresse
DE10358493B4 (de) Vorrichtung zum Innenhochdruckumformen
EP1657007B9 (fr) Procédé de formage de pièces
DE19706218C2 (de) Verfahren zum Formen eines gebogenen Bauteils im Rahmen der Innenhochdruck-Umformtechnik und Vorrichtung für die Durchführung des Verfahrens
CH525046A (de) Verformungsvorrichtung
DE60006604T4 (de) Hochdruckumformverfahren zum Formen von Metall
DE102007017030B3 (de) Verfahren und Vorrichtung zum Herstellen eines Innenhochdruckumformteils

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: THYSSEN KRUPP AUTOMOTIVE GMBH

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: THYSSEN KRUPP AUTOMOTIVE AG

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20000531

AKX Designation fees paid

Free format text: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AXX Extension fees paid

Free format text: AL PAYMENT 20010112;LT PAYMENT 20010112;LV PAYMENT 20010112;MK PAYMENT 20010112;RO PAYMENT 20010112;SI PAYMENT 20010112

17Q First examination report despatched

Effective date: 20020731

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20030131