EP2099575A2 - Vorrichtung zum einspannen von hohlprofilen - Google Patents
Vorrichtung zum einspannen von hohlprofilenInfo
- Publication number
- EP2099575A2 EP2099575A2 EP07856231A EP07856231A EP2099575A2 EP 2099575 A2 EP2099575 A2 EP 2099575A2 EP 07856231 A EP07856231 A EP 07856231A EP 07856231 A EP07856231 A EP 07856231A EP 2099575 A2 EP2099575 A2 EP 2099575A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamping
- support
- support core
- hollow
- tube
- 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
Links
- 238000005452 bending Methods 0.000 abstract description 5
- 230000004323 axial length Effects 0.000 description 1
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)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006055671A DE102006055671B4 (de) | 2006-11-23 | 2006-11-23 | Vorrichtung zum Einspannen von Hohlprofilen |
PCT/EP2007/010143 WO2008061762A2 (de) | 2006-11-23 | 2007-11-22 | Vorrichtung zum einspannen von hohlprofilen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2099575A2 true EP2099575A2 (de) | 2009-09-16 |
EP2099575B1 EP2099575B1 (de) | 2010-03-17 |
Family
ID=39338729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07856231A Not-in-force EP2099575B1 (de) | 2006-11-23 | 2007-11-22 | Vorrichtung zum einspannen von hohlprofilen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2099575B1 (de) |
AT (1) | ATE460999T1 (de) |
DE (2) | DE102006055671B4 (de) |
WO (1) | WO2008061762A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106825253B (zh) * | 2015-09-10 | 2018-07-03 | 深圳市德威精密模具有限公司 | 一种管内定位的缩径模具的工作方法 |
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 |
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 |
Family Cites Families (6)
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. |
DE1527447A1 (de) * | 1965-11-02 | 1969-06-12 | Rohrwerke Bitterfeld Veb | Vorrichtung zur kontinuierlichen Herstellung von Rohrbogen mit kleinem Biegeradius |
CH578720A5 (de) * | 1973-05-15 | 1976-08-13 | Sarmac Sa | |
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 |
SE7811607L (sv) * | 1978-11-10 | 1980-05-11 | Arenco Parts Ab | Laddningsanordning for inladdning av ror eller profiler i en ror- eller profilbockningsmaskin anordnad att arbeta med invendig uppstyrning |
DE3904903C2 (de) * | 1989-02-17 | 1994-07-28 | Fraunhofer Ges Forschung | Vorrichtung für das Einspannen von dünnwandigen Hohlprofilen |
-
2006
- 2006-11-23 DE DE102006055671A patent/DE102006055671B4/de not_active Expired - Fee Related
-
2007
- 2007-11-22 DE DE502007003190T patent/DE502007003190D1/de active Active
- 2007-11-22 AT AT07856231T patent/ATE460999T1/de active
- 2007-11-22 WO PCT/EP2007/010143 patent/WO2008061762A2/de active Application Filing
- 2007-11-22 EP EP07856231A patent/EP2099575B1/de not_active Not-in-force
Non-Patent Citations (1)
Title |
---|
See references of WO2008061762A3 * |
Also Published As
Publication number | Publication date |
---|---|
WO2008061762A2 (de) | 2008-05-29 |
WO2008061762A3 (de) | 2008-07-10 |
DE102006055671B4 (de) | 2010-11-25 |
EP2099575B1 (de) | 2010-03-17 |
DE502007003190D1 (de) | 2010-04-29 |
ATE460999T1 (de) | 2010-04-15 |
DE102006055671A1 (de) | 2008-06-05 |
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