EP0481279A3 - Method of spatial roll-stretch-bending in combination with a mandrel bending station - Google Patents

Method of spatial roll-stretch-bending in combination with a mandrel bending station Download PDF

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Publication number
EP0481279A3
EP0481279A3 EP19910116744 EP91116744A EP0481279A3 EP 0481279 A3 EP0481279 A3 EP 0481279A3 EP 19910116744 EP19910116744 EP 19910116744 EP 91116744 A EP91116744 A EP 91116744A EP 0481279 A3 EP0481279 A3 EP 0481279A3
Authority
EP
European Patent Office
Prior art keywords
bending
bent
section
stretch
combination
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
EP19910116744
Other languages
German (de)
Other versions
EP0481279B1 (en
EP0481279A2 (en
Inventor
Walter Spaeth
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0481279A2 publication Critical patent/EP0481279A2/en
Publication of EP0481279A3 publication Critical patent/EP0481279A3/en
Application granted granted Critical
Publication of EP0481279B1 publication Critical patent/EP0481279B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/05—Bending tubes using mandrels or the like co-operating with forming members
    • B21D9/07—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only
    • B21D9/073—Bending tubes using mandrels or the like co-operating with forming members with one or more swinging forming members engaging tube ends only with one swinging forming member

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

The invention describes a method of three-dimensional roll-stretch-bending in combination with a mandrel bending station and the corresponding apparatus for this purpose, the section to be bent first of all being clamped at both ends and subjected to a prestress and the section then being bent, at least one shaping roller being pressed against the section in the shaping region and adjusted in three dimensions. In order also to be able to bend closed or partially open sections, the mandrel bending station, having one or more mandrels around which the section to be bent is bent, is moved in the same direction as the shaping rollers, which are pressed against the mandrel bending station from the outside. <IMAGE>
EP91116744A 1990-10-18 1991-10-01 Method of spatial roll-stretch-bending in combination with a mandrel bending station Expired - Lifetime EP0481279B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4033031 1990-10-18
DE4033031A DE4033031A1 (en) 1990-10-18 1990-10-18 SPACIAL ROLLING AND BENDING METHOD IN CONNECTION WITH A THORN BENDING STATION

Publications (3)

Publication Number Publication Date
EP0481279A2 EP0481279A2 (en) 1992-04-22
EP0481279A3 true EP0481279A3 (en) 1992-10-21
EP0481279B1 EP0481279B1 (en) 1994-06-08

Family

ID=6416517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91116744A Expired - Lifetime EP0481279B1 (en) 1990-10-18 1991-10-01 Method of spatial roll-stretch-bending in combination with a mandrel bending station

Country Status (6)

Country Link
US (1) US5333481A (en)
EP (1) EP0481279B1 (en)
JP (1) JPH04258318A (en)
AT (1) ATE106783T1 (en)
DE (2) DE4033031A1 (en)
ES (1) ES2057705T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4140591A1 (en) * 1991-12-10 1993-06-17 Walter E Spaeth STRETCH BENDING METHOD FOR BENDING HOLLOW PROFILES AND PROFILE-THORN STRETCH BENDING MACHINE
JP4031827B2 (en) * 2002-10-10 2008-01-09 三桜工業株式会社 Double pipe bending method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1627531A1 (en) * 1967-09-01 1970-06-18 Arog Armaturen & App & Roehren Process and device for the production of casing pipes, K 58
FR2121756A1 (en) * 1971-01-12 1972-08-25 Banning J Ag Maschinenf Tube bender - allows bends of defferent radii to be made in a tube using the same tools
EP0163056A2 (en) * 1984-04-21 1985-12-04 Schmitz & Brill GmbH & Co. KG Method of manufacturing bent, double-walled tube sections for waste gas arrangements of motor vehicles and tool for carrying out the method
US4941338A (en) * 1986-06-04 1990-07-17 Spath Gmbh & Co. Kg Device for cold forming of ferrous and non-ferrous metal sections

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE162751C (en) *
US1587931A (en) * 1923-10-11 1926-06-08 Wolders Cornelis Theodorus Tube-bending machine
US1982164A (en) * 1932-12-08 1934-11-27 Gustav A Hoener Bending machine
US3121538A (en) * 1960-11-28 1964-02-18 Westinghouse Electric Corp Coil winding apparatus
US3339391A (en) * 1964-12-04 1967-09-05 Ben C Kowalski Stretch bending machine
US4009601A (en) * 1975-01-24 1977-03-01 K.K. Shimizu Seisakusho Method of and apparatus for bending a double pipe
DE2746721C3 (en) * 1977-10-18 1981-03-19 Schwarze, Rigobert, Dipl.-Ing., 5000 Köln Tube bending machine
US4238945A (en) * 1978-12-22 1980-12-16 Rigobert Schwarze Apparatus for bending a jacketed tube
DE3719033C2 (en) * 1987-06-06 1995-09-14 Schwarze Rigobert Pipe bending machine with mandrel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1627531A1 (en) * 1967-09-01 1970-06-18 Arog Armaturen & App & Roehren Process and device for the production of casing pipes, K 58
FR2121756A1 (en) * 1971-01-12 1972-08-25 Banning J Ag Maschinenf Tube bender - allows bends of defferent radii to be made in a tube using the same tools
EP0163056A2 (en) * 1984-04-21 1985-12-04 Schmitz & Brill GmbH & Co. KG Method of manufacturing bent, double-walled tube sections for waste gas arrangements of motor vehicles and tool for carrying out the method
US4941338A (en) * 1986-06-04 1990-07-17 Spath Gmbh & Co. Kg Device for cold forming of ferrous and non-ferrous metal sections

Also Published As

Publication number Publication date
DE59101858D1 (en) 1994-07-14
ATE106783T1 (en) 1994-06-15
DE4033031A1 (en) 1992-04-23
ES2057705T3 (en) 1994-10-16
JPH04258318A (en) 1992-09-14
EP0481279B1 (en) 1994-06-08
EP0481279A2 (en) 1992-04-22
US5333481A (en) 1994-08-02

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