ATE110601T1 - METHOD, APPARATUS AND BENDING MANDREL FOR MULTI-WALL PIPE. - Google Patents

METHOD, APPARATUS AND BENDING MANDREL FOR MULTI-WALL PIPE.

Info

Publication number
ATE110601T1
ATE110601T1 AT90201759T AT90201759T ATE110601T1 AT E110601 T1 ATE110601 T1 AT E110601T1 AT 90201759 T AT90201759 T AT 90201759T AT 90201759 T AT90201759 T AT 90201759T AT E110601 T1 ATE110601 T1 AT E110601T1
Authority
AT
Austria
Prior art keywords
bending
tube
wall pipe
bending mandrel
location
Prior art date
Application number
AT90201759T
Other languages
German (de)
Inventor
H G Grobbenhaar
Original Assignee
Grand Prix Silencers Bv
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 Grand Prix Silencers Bv filed Critical Grand Prix Silencers Bv
Application granted granted Critical
Publication of ATE110601T1 publication Critical patent/ATE110601T1/en

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)
  • Branch Pipes, Bends, And The Like (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

In the bending in a bending plane of a multiple tube (6) having a plurality of compartments (7,8) extending side-by-side in the longitudinal direction of the tube, a bending location is moved progressively along the tube and during bending a mandrel (12,13) is located inside each said compartment at the bending location. To improve control of the tube shape, during at least part of the bending the position of at least one of the mandrels (12,13) relative to the tube at the bending location varies in dependence on at least one parameter of the bending. At least one of said mandrels (12,13) may be free to move, under constraint by a resilient force, in the longitudinal direction of the tube.
AT90201759T 1989-07-05 1990-07-02 METHOD, APPARATUS AND BENDING MANDREL FOR MULTI-WALL PIPE. ATE110601T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8901713A NL8901713A (en) 1989-07-05 1989-07-05 METHOD, APPARATUS AND BENDING PIN FOR BENDING A MULTIPLE TUBE.

Publications (1)

Publication Number Publication Date
ATE110601T1 true ATE110601T1 (en) 1994-09-15

Family

ID=19854969

Family Applications (1)

Application Number Title Priority Date Filing Date
AT90201759T ATE110601T1 (en) 1989-07-05 1990-07-02 METHOD, APPARATUS AND BENDING MANDREL FOR MULTI-WALL PIPE.

Country Status (11)

Country Link
EP (1) EP0406969B1 (en)
JP (2) JP2566049B2 (en)
AT (1) ATE110601T1 (en)
CZ (1) CZ284109B6 (en)
DD (1) DD296865A5 (en)
DE (1) DE69012002T2 (en)
ES (1) ES2057358T3 (en)
NL (1) NL8901713A (en)
PL (1) PL164158B1 (en)
PT (1) PT94606B (en)
SK (1) SK279558B6 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4751049B2 (en) * 2003-12-26 2011-08-17 カルソニックカンセイ株式会社 Bending part manufacturing apparatus and bending part manufacturing method of multi-hole tube.
EP1547702B1 (en) * 2003-12-26 2007-07-11 Calsonic Kansei Corporation Apparatus and method for bending multi-channel tubes
DE102006025746A1 (en) * 2006-05-31 2007-12-06 Klingelnberg Ag Mandrel shaft alternating bending tool
DE102014102974A1 (en) 2014-03-06 2015-09-10 Thyssenkrupp Steel Europe Ag Method for customizing the shape of components
CN105195622A (en) * 2015-10-26 2015-12-30 浙江志达管业有限公司 Pipe bend punch-forming die
CN111702053A (en) * 2020-07-02 2020-09-25 昆山联德电子科技有限公司 Small R angle bending method and corresponding device for round thin-walled pipe
KR102808813B1 (en) * 2022-07-05 2025-05-19 (주)일지테크 Bending mechanism with multiple cores for bending of asymmetrical shaped tube

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009601A (en) * 1975-01-24 1977-03-01 K.K. Shimizu Seisakusho Method of and apparatus for bending a double pipe
DE2732046A1 (en) * 1976-08-20 1979-02-01 Schwarze Rigobert Bending fixture for tube contg. smaller second tube - uses circular bending core for small tube and C=shaped core in gap left in large tube
JPS60118331A (en) * 1983-12-01 1985-06-25 Mitsubishi Heavy Ind Ltd Manufacture of double pipe heat exchanger
DE3415077C1 (en) * 1984-04-21 1985-09-05 Schmitz & Brill GmbH & Co. KG, 5950 Finnentrop Method for producing double-walled, curved pipe sections for exhaust systems on motor vehicles or the like. and tool for performing the method
JPS61195813A (en) * 1985-02-26 1986-08-30 Toyo Tire & Rubber Co Ltd Process of slush molding packed under reduced pressure

Also Published As

Publication number Publication date
JPH07148530A (en) 1995-06-13
PT94606B (en) 1997-09-30
DD296865A5 (en) 1991-12-19
DE69012002T2 (en) 1995-01-05
NL8901713A (en) 1991-02-01
JPH0342122A (en) 1991-02-22
PL164158B1 (en) 1994-06-30
PT94606A (en) 1992-01-31
ES2057358T3 (en) 1994-10-16
CS335090A3 (en) 1992-02-19
EP0406969B1 (en) 1994-08-31
CZ284109B6 (en) 1998-08-12
JP2566049B2 (en) 1996-12-25
SK279558B6 (en) 1998-12-02
DE69012002D1 (en) 1994-10-06
EP0406969A1 (en) 1991-01-09
PL285944A1 (en) 1991-02-25

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee