EP0347369A3 - Method and apparatus for hydraulically enlarging hollow profiles - Google Patents

Method and apparatus for hydraulically enlarging hollow profiles Download PDF

Info

Publication number
EP0347369A3
EP0347369A3 EP19890730141 EP89730141A EP0347369A3 EP 0347369 A3 EP0347369 A3 EP 0347369A3 EP 19890730141 EP19890730141 EP 19890730141 EP 89730141 A EP89730141 A EP 89730141A EP 0347369 A3 EP0347369 A3 EP 0347369A3
Authority
EP
European Patent Office
Prior art keywords
hollow profile
hollow
sealing ring
sealing
expansion
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Withdrawn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
EP19890730141
Other languages
German (de)
French (fr)
Other versions
EP0347369A2 (en
Inventor
Gerd Dr.-Ing. Vogt
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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 Mannesmann AG filed Critical Mannesmann AG
Publication of EP0347369A2 publication Critical patent/EP0347369A2/en
Publication of EP0347369A3 publication Critical patent/EP0347369A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02Shaping 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
    • B21D26/033Deforming tubular bodies
    • B21D26/045Closing or sealing means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02Shaping 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
    • B21D26/033Deforming tubular bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B5/00Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/02Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of a flexible element, e.g. diaphragm, urged by fluid pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B7/00Presses characterised by a particular arrangement of the pressing members
    • B30B7/04Presses characterised by a particular arrangement of the pressing members wherein pressing is effected in different directions simultaneously or in turn

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

Die Erfindung betrifft ein Verfahren zum Aufweiten von an den Stirnflächen an sich offenen Hohlprofilen aus einem metallischen Werkstoff, insbesondere aus Stahl, auf eine Form, die durch ein das Hohlprofil umgebendes geteiltes Außenwerkzeug vorgegeben ist, wobei die Stirnflächen mittels Dichtköpfen verschlossen werden und innerhalb des Hohlprofils ein hydraulischer Innendruck zur Verformung aufgebracht wird. Um ein Verfahren zur hydraulischen Auf­ weitung von metallischen Hohlprofilen anzugeben, das möglichst einfach durchführbar ist und bei dem insbesondere die Abdichtung des Hohlprofils ohne großen Vorrichtungs­ aufwand erfolgt, wird vorgeschlagen, daß der starre Teil der Dichtköpfe jeweils über einen elastischen hohlen Dichtring gegenüber dem Hohlprofil abgedichtet wird, indem der Dichtring in seinem Inneren mit einem Druck P₁, der stets größer als der zur Verformung des Hohlprofils gerade angewendete Druck P₂ gehalten wird, beaufschlagt und zur Anlage an die innere oder äußere Oberfläche des Hohlprofils gebracht wird, wobei die Aufweitung des Hohlprofils im Bereich des Dichtringes von außen auf ein Maß begrenzt wird, das innerhalb der Anpassungsmöglichkeit des Dichtringes an die Oberfläche des Hohlprofils liegt. The invention relates to a method for expanding on the end faces of hollow profiles that are open metallic material, especially steel, on a Form, which is divided by a surrounding the hollow profile External tool is specified, the end faces sealed with sealing heads and within the Hollow profile a hydraulic internal pressure for deformation is applied. To a procedure for hydraulic on expansion of hollow metal profiles to indicate that is as simple as possible and in particular the sealing of the hollow profile without a large device effort, it is proposed that the rigid part the sealing heads each have an elastic hollow Sealing ring is sealed against the hollow profile by the sealing ring inside with a pressure P₁, the always larger than that for deforming the hollow profile straight applied pressure P₂ is held, acted upon and Attachment to the inner or outer surface of the hollow profile is brought, the expansion of the hollow profile in Area of the sealing ring is limited to a dimension from the outside, that within the possibility of adapting the sealing ring lies on the surface of the hollow profile.

EP19890730141 1988-06-16 1989-06-12 Method and apparatus for hydraulically enlarging hollow profiles Withdrawn EP0347369A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3820952 1988-06-16
DE3820952A DE3820952A1 (en) 1988-06-16 1988-06-16 METHOD AND DEVICE FOR HYDRAULICALLY EXPANDING HOLLOW PROFILES

Publications (2)

Publication Number Publication Date
EP0347369A2 EP0347369A2 (en) 1989-12-20
EP0347369A3 true EP0347369A3 (en) 1990-10-17

Family

ID=6356940

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890730141 Withdrawn EP0347369A3 (en) 1988-06-16 1989-06-12 Method and apparatus for hydraulically enlarging hollow profiles

Country Status (5)

Country Link
US (1) US4951492A (en)
EP (1) EP0347369A3 (en)
JP (1) JPH0284219A (en)
KR (1) KR900000138A (en)
DE (1) DE3820952A1 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5353618A (en) 1989-08-24 1994-10-11 Armco Steel Company, L.P. Apparatus and method for forming a tubular frame member
DE4103082A1 (en) * 1991-02-01 1992-08-27 Eichelberg & Co Gmbh H D METHOD FOR THE HYDROSTATIC FORMING OF HOLLOW BODIES FROM COLD FORMABLE METAL AND DEVICE FOR IMPLEMENTING THE METHOD
DE4103078A1 (en) * 1991-02-01 1992-08-06 Eichelberg & Co Gmbh H D DEVICE FOR THE HYDROSTATIC FORMING OF HOLLOW BODIES MADE OF COLD-FORMING METAL
DE4103079A1 (en) * 1991-02-01 1992-08-27 Eichelberg & Co Gmbh H D DEVICE FOR THE HYDROSTATIC FORMING OF HOLLOW BODIES MADE OF COLD-FORMING METAL
DE4337517A1 (en) * 1993-11-03 1995-05-04 Klaas Friedrich Process for the hydroforming of hollow stepped shafts made of cold-formable metal
US5392626A (en) * 1994-03-16 1995-02-28 The Babcock & Wilcox Company Flexible hydraulic expansion mandrel
US5992197A (en) * 1997-03-28 1999-11-30 The Budd Company Forming technique using discrete heating zones
DE19751407C1 (en) * 1997-11-14 1999-07-15 Mannesmann Ag Method and device for hydraulically sealing a hollow profile
DE19751413C2 (en) * 1997-11-14 2000-06-08 Mannesmann Ag Method and device for reducing wall friction in the hydroforming process
DE19812884C2 (en) * 1998-03-17 2002-02-07 Inpro Innovations Gmbh Method for docking a shaped wedge to welded sheet metal blanks for their internal high pressure forming into a hollow component and device for carrying out the method
US6098437A (en) * 1998-03-20 2000-08-08 The Budd Company Hydroformed control arm
US6006568A (en) * 1998-03-20 1999-12-28 The Budd Company Multi-piece hydroforming tool
US6032501A (en) * 1999-02-09 2000-03-07 The Budd Company Method of hydroforming multi-lateral members from round tubes
US6209372B1 (en) 1999-09-20 2001-04-03 The Budd Company Internal hydroformed reinforcements
DE19957508C1 (en) 1999-11-30 2001-01-04 Daimler Chrysler Ag Device for inserting insert members with through opening onto hollow profiled sections using fluid pressure has expanding lance as two separate aligned driven oblong components
DE10055607A1 (en) * 2000-11-09 2002-05-23 Daimler Chrysler Ag Column tube of steering column has tube sections connected with frictional engagement over entire displacement path
US6510720B1 (en) * 2001-10-18 2003-01-28 Hartwick Professionals, Inc. Hydraulic pressure forming using a self aligning and activating die system
US6536252B1 (en) 2002-02-19 2003-03-25 Babcock & Wilcox Canada Ltd. Non-metallic hydraulic expansion mandrel
CN1304136C (en) * 2004-04-06 2007-03-14 东莞市永强汽车制造有限公司 End plate shaping apparatus
JP5710872B2 (en) * 2009-09-29 2015-04-30 ヤマハ発動機株式会社 Material pipe processing method, material pipe processing apparatus and processing pipe
US8910500B2 (en) 2012-09-10 2014-12-16 National Research Council Of Canada Low friction end feeding in tube hydroforming
JP7155233B2 (en) * 2018-02-23 2022-10-18 住友重機械工業株式会社 molding equipment

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1930745A (en) * 1930-10-20 1933-10-17 Doherty Res Co Method and means for cold treating metal tubing
GB650333A (en) * 1947-04-25 1951-02-21 Robertshaw Fulton Controls Co Collets for establishing and maintaining a seal by the use of fluid under pressure
FR1245164A (en) * 1959-01-09 1960-11-04 Process for manufacturing round tubes and device for carrying out this process
DE1158934B (en) * 1953-09-17 1963-12-12 Baldwin Lima Hamilton Corp Device for expanding a pipe
US3625040A (en) * 1969-08-06 1971-12-07 Koppy Tool Corp Method and apparatus for forming articles from a tubular blank

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA532335A (en) * 1956-10-30 S. Schindler Frank Apparatus for annularly corrugating metal tubing
CH350946A (en) * 1958-01-10 1960-12-31 Keelavite Company Limited Apparatus for forming at least one bulge in one end of a pipe
DE2935086C2 (en) * 1979-08-28 1982-04-01 Mannesmann AG, 4000 Düsseldorf Method and device for the production of detached hollow bodies with widely differing cross-sectional shapes
US4751836A (en) * 1986-07-07 1988-06-21 Vetco Gray Inc. Pipe end conditioner and method
US4827748A (en) * 1988-07-11 1989-05-09 Cameron Iron Works Usa, Inc. Cold forming tool

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1930745A (en) * 1930-10-20 1933-10-17 Doherty Res Co Method and means for cold treating metal tubing
GB650333A (en) * 1947-04-25 1951-02-21 Robertshaw Fulton Controls Co Collets for establishing and maintaining a seal by the use of fluid under pressure
DE1158934B (en) * 1953-09-17 1963-12-12 Baldwin Lima Hamilton Corp Device for expanding a pipe
FR1245164A (en) * 1959-01-09 1960-11-04 Process for manufacturing round tubes and device for carrying out this process
US3625040A (en) * 1969-08-06 1971-12-07 Koppy Tool Corp Method and apparatus for forming articles from a tubular blank

Also Published As

Publication number Publication date
JPH0284219A (en) 1990-03-26
DE3820952C2 (en) 1991-01-24
KR900000138A (en) 1990-01-30
US4951492A (en) 1990-08-28
DE3820952A1 (en) 1989-12-21
EP0347369A2 (en) 1989-12-20

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