WO2008061762A2 - Dispositif pour enserrer des profilés creux - Google Patents

Dispositif pour enserrer des profilés creux Download PDF

Info

Publication number
WO2008061762A2
WO2008061762A2 PCT/EP2007/010143 EP2007010143W WO2008061762A2 WO 2008061762 A2 WO2008061762 A2 WO 2008061762A2 EP 2007010143 W EP2007010143 W EP 2007010143W WO 2008061762 A2 WO2008061762 A2 WO 2008061762A2
Authority
WO
WIPO (PCT)
Prior art keywords
clamping
support
support core
hollow
tube
Prior art date
Application number
PCT/EP2007/010143
Other languages
German (de)
English (en)
Other versions
WO2008061762A3 (fr
Inventor
Dirk BÖRGER
Thomas Sondermann
Original Assignee
Tracto-Technik Gmbh & Co. Kg
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 Tracto-Technik Gmbh & Co. Kg filed Critical Tracto-Technik Gmbh & Co. Kg
Priority to EP07856231A priority Critical patent/EP2099575B1/fr
Priority to AT07856231T priority patent/ATE460999T1/de
Priority to DE502007003190T priority patent/DE502007003190D1/de
Publication of WO2008061762A2 publication Critical patent/WO2008061762A2/fr
Publication of WO2008061762A3 publication Critical patent/WO2008061762A3/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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/006—Feeding elongated articles, such as tubes, bars, or profiles
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/03—Apparatus with means to keep the profile in shape
    • 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

Definitions

  • the invention relates to a device for clamping preferably thin-walled hollow profiles during forming, for example, when bending round or square tubes.
  • the slot includes four wedge-shaped clamping pieces whose wedge surfaces are directed so that the clamping pieces move radially when tightening the clamping pieces projecting through a clamping screw and create firm against the inside of the hollow profile.
  • the outer clamping device consists essentially of clamping and pressure plates, which are pressed via clamping screws in Verspannklötzen on the hollow section.
  • This device is extremely expensive and requires a relatively high handling costs.
  • the invention is therefore based on the problem to provide a structurally simple, yet highly effective clamping device for pipes and other hollow sections, which nevertheless allows the introduction of high axial forces.
  • the solution to this problem consists in a clamping device with a holding rod enclosing a receiving rod for a support core and the tube or holding profile encompassing clamping body and a mandrel.
  • the receiving rod and the support core are preferably formed in one piece.
  • the support rod can be extended and provided at the front end with the mandrel.
  • Fig. 1 is a schematic representation of the clamping device according to the invention for a bending machine
  • Fig. 2 is an external perspective view of the device according to the invention with a tubular hollow profile.
  • a support pin 3 at the front end of a support rod 2.
  • the support rod 2 is surrounded at a short distance from the support pin 3 by a support core 4 at the front end of a receiving rod 5.
  • a collet 6 surrounds the tube 1, the longitudinally wedge-shaped sections 7 are pressed in the operating state of an axially displaceable outer, inner conical clamping ring 8 on the tube 1.
  • the tube wall then rests on the stable support core 4, which in turn acts as an abutment for the tube 1.
  • the tube 1 between the collet 6 and the mandrel 3 and a bending roller 9 is supported with a clamping piece 10 outside by a slider 11.
  • the tube 1 is firmly clamped and supported between the support core 4 and the collet 6; it is at most subject to a slight deformation.
  • the support core 4 prevents deformation of the tube 1 even at high axial pressure.
  • the transferable force can be further increased by the fact that the surfaces of the support core 4 and the sections 7 contacting the tube 1 have an increased coefficient of friction, for example roughened or provided with circumferential ribs.
  • a radially outwardly acting clamping body may be arranged in the pipe, which then cooperates with the collet, or the collet may be replaced in this case by a support tube, which then cooperates with the clamping body arranged in the tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

La présente invention concerne un dispositif pour enserrer des profilés creux, par exemple lors du pliage, un mandrin de support disposé à l'extrémité avant d'une tige de retenue se trouvant à l'intérieur du profilé creux et une tige de réception destinée à une partie centrale d'appui, entourant la tige de retenue. Au niveau de la partie centrale d'appui, une pince de serrage entoure le profilé creux qui est enserré entre le mandrin de support, la tige de réception comprenant la partie centrale d'appui d'un côté, et la pince de serrage.
PCT/EP2007/010143 2006-11-23 2007-11-22 Dispositif pour enserrer des profilés creux WO2008061762A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP07856231A EP2099575B1 (fr) 2006-11-23 2007-11-22 Dispositif pour enserrer des profilés creux
AT07856231T ATE460999T1 (de) 2006-11-23 2007-11-22 Vorrichtung zum einspannen von hohlprofilen
DE502007003190T DE502007003190D1 (de) 2006-11-23 2007-11-22 Vorrichtung zum einspannen von hohlprofilen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006055671.2 2006-11-23
DE102006055671A DE102006055671B4 (de) 2006-11-23 2006-11-23 Vorrichtung zum Einspannen von Hohlprofilen

Publications (2)

Publication Number Publication Date
WO2008061762A2 true WO2008061762A2 (fr) 2008-05-29
WO2008061762A3 WO2008061762A3 (fr) 2008-07-10

Family

ID=39338729

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/010143 WO2008061762A2 (fr) 2006-11-23 2007-11-22 Dispositif pour enserrer des profilés creux

Country Status (4)

Country Link
EP (1) EP2099575B1 (fr)
AT (1) ATE460999T1 (fr)
DE (2) DE102006055671B4 (fr)
WO (1) WO2008061762A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114346022A (zh) * 2021-12-16 2022-04-15 东风汽车集团股份有限公司 铝型材拉弯芯棒结构及设计方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106944551B (zh) * 2015-09-10 2018-07-06 佛山市顺德区智方塑料五金实业有限公司 管内定位的缩径模具及其工作方法
CN107755563B (zh) * 2017-12-18 2024-05-14 张家港兴宇机械制造有限公司 弯管机中的管件夹持机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1527447A1 (de) * 1965-11-02 1969-06-12 Rohrwerke Bitterfeld Veb Vorrichtung zur kontinuierlichen Herstellung von Rohrbogen mit kleinem Biegeradius
FR2293997A1 (fr) * 1974-12-09 1976-07-09 Prvni Brnenska Strojirna Dispositif de manipulation pour faire glisser des tubes sur le mandrin de machines a cintrer
FR2440787A1 (fr) * 1978-11-10 1980-06-06 Fjallstrom Bengt Dispositif pour introduire des tubes ou des profiles dans une machine a cintrer qui fonctionne avec un guidage interne
DE3904903A1 (de) * 1989-02-17 1990-08-23 Fraunhofer Ges Forschung Einschub fuer das einspannen von duennwandigen hohlprofilen, insbesondere fuer innendruckversuche

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1924412U (de) * 1965-07-06 1965-09-30 Mannesmann Ag Fuehrungs-bzw. stuetzvorrichtung zur verwendung bei der herstellung von laengsnahtgeschweissten rohren.
CH578720A5 (fr) * 1973-05-15 1976-08-13 Sarmac Sa

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1527447A1 (de) * 1965-11-02 1969-06-12 Rohrwerke Bitterfeld Veb Vorrichtung zur kontinuierlichen Herstellung von Rohrbogen mit kleinem Biegeradius
FR2293997A1 (fr) * 1974-12-09 1976-07-09 Prvni Brnenska Strojirna Dispositif de manipulation pour faire glisser des tubes sur le mandrin de machines a cintrer
FR2440787A1 (fr) * 1978-11-10 1980-06-06 Fjallstrom Bengt Dispositif pour introduire des tubes ou des profiles dans une machine a cintrer qui fonctionne avec un guidage interne
DE3904903A1 (de) * 1989-02-17 1990-08-23 Fraunhofer Ges Forschung Einschub fuer das einspannen von duennwandigen hohlprofilen, insbesondere fuer innendruckversuche

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114346022A (zh) * 2021-12-16 2022-04-15 东风汽车集团股份有限公司 铝型材拉弯芯棒结构及设计方法
CN114346022B (zh) * 2021-12-16 2023-12-26 东风汽车集团股份有限公司 铝型材拉弯芯棒结构及设计方法

Also Published As

Publication number Publication date
ATE460999T1 (de) 2010-04-15
WO2008061762A3 (fr) 2008-07-10
EP2099575A2 (fr) 2009-09-16
DE102006055671B4 (de) 2010-11-25
DE502007003190D1 (de) 2010-04-29
EP2099575B1 (fr) 2010-03-17
DE102006055671A1 (de) 2008-06-05

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