EP2134482B1 - Verfahren und anbiegepresse zum anbiegen der randstreifen eines zu einem schlitzrohr zu formenden bleches - Google Patents

Verfahren und anbiegepresse zum anbiegen der randstreifen eines zu einem schlitzrohr zu formenden bleches Download PDF

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Publication number
EP2134482B1
EP2134482B1 EP08706871A EP08706871A EP2134482B1 EP 2134482 B1 EP2134482 B1 EP 2134482B1 EP 08706871 A EP08706871 A EP 08706871A EP 08706871 A EP08706871 A EP 08706871A EP 2134482 B1 EP2134482 B1 EP 2134482B1
Authority
EP
European Patent Office
Prior art keywords
bending
lower tool
press
edge
contour
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.)
Not-in-force
Application number
EP08706871A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2134482A1 (de
Inventor
Johannes Gross-Weege
Manfred Sawitzki
Ludwig Oesterlein
Jan Neuenhahn
Manfred Lenuck
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.)
Europipe GmbH
Original Assignee
Europipe GmbH
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 Europipe GmbH filed Critical Europipe GmbH
Publication of EP2134482A1 publication Critical patent/EP2134482A1/de
Application granted granted Critical
Publication of EP2134482B1 publication Critical patent/EP2134482B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
    • B21D5/015—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments for making tubes
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • 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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/10—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes

Definitions

  • the invention relates to a method for bending a metal sheet to be formed into a slotted pipe according to the preamble of claim 1 and a bending press according to claim 5.
  • the sheet metal edges which lie parallel opposite each other in the case of the slotted pipe are usually provided with a corresponding sheet edge chamfering (for example double-V) for the subsequent longitudinal seam welding.
  • the known prior art Anbiegepressen for bending the edge strips of flat sheets consist of a firmly fixed in the press frame and contoured according to the radius to be reached contoured upper tool and this lying vertically displaceable lower tool.
  • Anbiegepressen are for example from the DE 26 41 573 A1 , of the DE 43 11 228 A1 or the DE 25 10 488 C3 known that deals with the problem of undeformed Dealing with end areas when bending the edge strips of flat sheets (roof edge formation).
  • Another disadvantage is that the rolling deformation of the edge strips a rolling out of the sheet edges can not be prevented, creating ripples in the edge region.
  • a further disadvantage is that the bending radius of the edge strip is determined by the circumferential contours of the bending rollers. This means that with changing pipe diameters, a corresponding number of bending rollers with different circumferential contours must be provided.
  • Kalottenlagerung is also that expensive measures must be taken to avoid contamination of the dome and thus minimize the wear of the lower tool and dome.
  • the object of the invention is therefore to provide a method for bending a flat sheet to be formed into a slotted tube in a Anbiegepresse, minimized in a simple and cost-effective manner, both the roof edge formation as well as plastic deformation or pinching, prepared for welding sheet edges and thus wall thickness undercuts in the weld area on the finished tube can be safely avoided.
  • Another object is to provide a corresponding bending press.
  • a method is used to solve this problem, in which a flat contact in a minimum and with respect to the force application point constant distance to the sheet edge, is maintained throughout the bending process by a coordinated horizontal and vertical movement of the lower tool.
  • the sequence of movements for the horizontal and vertical adjustment of the lower tool can be realized so that the movements occur simultaneously, for example, linear or in any curve. Furthermore, the Sequence of movements take place, with the horizontal and vertical movements take place successively.
  • the force application point of the lower tool is always kept constant at the edge strip, so that the undeformed end portion of the sheet edge is always kept at a constant and minimal value.
  • the surface contact is maintained during the entire bending process, so that the otherwise occurring at the beginning of bending constraints in the horizontal direction and the local stress peaks caused by the chamfered sheet edge are reliably avoided and plastic deformation due to local voltage exceeding are excluded.
  • the force application point on the lower tool is displaced kinematically, so that the contour of the surface of the lower tool that comes into contact with the underside of the edge strip must be designed in such a way that surface pressure is at least over one during the entire bending process Hertzian pressure is maintained.
  • the lower tool in the region of the force application point at the beginning of the bending process z. B. has a planar contour, which merges into a convex contour, or the entire during the bending with the edge strip in contact surface of the lower tool has a convex curved shape.
  • FIG. 1 the principle of a bending press 11 according to the invention is shown with a vertically and horizontally under load adjustable lower tool 3 immediately before the bending of an edge strip 2 of a sheet.
  • the sheet outside of the edge strip area to be applied in a press frame 4 of the bending press 11 is clamped fixed and positioned below a bend radius to be generated corresponding contoured upper tool 1.
  • the end region 8 of the edge strip 2 to be attached is provided with a chamfer 7 for welding the UOE-shaped slot tube.
  • the lower tool 3 which is mounted vertically and horizontally so as to be displaceable under load, is arranged below the end region 8 of the edge strip 2, the lower tool 3 according to the invention, which is mounted vertically and horizontally so as to be displaceable under load, is arranged.
  • the possible direction of movement of the lower tool for the vertical direction is indicated by arrow 9 and for the horizontal direction by arrow 10.
  • the force application point P of the lower tool 3 is located in the end region 8 of the edge strip 2 at a minimum distance from the sheet metal edge in order to minimize the formation of an undeformed end region.
  • the lower tool 3 is according to the invention designed so that a permanent surface contacting at least in the sense of a Hertzian pressure with the edge strip 2 to be approached allows and so a Blechkantendeformation is largely avoided.
  • the surface contour of the lower tool 3 has in the contact plane with the edge strip 2 on a flat portion 5, which merges in the working region of the lower tool 3 in a convex portion 6.
  • the flat section 5 of the working surface of the lower tool 3 contacts the underside of the edge strip 2 in a planar manner, wherein only a portion of the working surface of the lower tool 3 touches the underside of the edge strip 2.
  • the lower die 3 is moved during the bending operation vertically and horizontally to the end position in such a way that the force application point P during the bending process at the original location of the end portion of the edge strip 2 remains, but this on the working surface of the lower tool 3 in Direction convex portion 6 shifts.
  • the lower tool 3 is thereby moved so that either the horizontal and vertical movements simultaneously, z. B. linear or made the movements gradually.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP08706871A 2007-03-09 2008-01-30 Verfahren und anbiegepresse zum anbiegen der randstreifen eines zu einem schlitzrohr zu formenden bleches Not-in-force EP2134482B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007012316A DE102007012316B9 (de) 2007-03-09 2007-03-09 Verfahren und Anbiegepresse zum Anbiegen der Randstreifen eines zu einem Schlitzrohr zu formenden ebenen Bleches
PCT/DE2008/000211 WO2008110132A1 (de) 2007-03-09 2008-01-30 Verfahren und anbiegepresse zum anbiegen der randstreifen eines zu einem schlitzrohr zu formenden bleches

Publications (2)

Publication Number Publication Date
EP2134482A1 EP2134482A1 (de) 2009-12-23
EP2134482B1 true EP2134482B1 (de) 2010-06-23

Family

ID=39651359

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08706871A Not-in-force EP2134482B1 (de) 2007-03-09 2008-01-30 Verfahren und anbiegepresse zum anbiegen der randstreifen eines zu einem schlitzrohr zu formenden bleches

Country Status (7)

Country Link
EP (1) EP2134482B1 (ru)
JP (1) JP5208973B2 (ru)
CN (1) CN101626850B (ru)
AT (1) ATE471772T1 (ru)
DE (2) DE102007012316B9 (ru)
RU (1) RU2447960C2 (ru)
WO (1) WO2008110132A1 (ru)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5470841B2 (ja) 2008-12-26 2014-04-16 新日鐵住金株式会社 シリンダ管用鋼板のロール曲げ成形装置及びこれを用いたシリンダ管用鋼板のロール曲げ成形方法
WO2010118759A2 (de) * 2009-04-16 2010-10-21 Gmbh Siegen Bergrohr Biegepresse für blechtafeln
EP2251109A1 (de) * 2009-04-16 2010-11-17 Gräbener Maschinentechnik GmbH & Co. KG Vorrichtung und Verfahren zur Verformung eines Blechs
DE102010008894A1 (de) * 2010-02-23 2011-08-25 SMS Meer GmbH, 41069 Verfahren zum Anbiegen eines Bleches
WO2019188002A1 (ja) * 2018-03-30 2019-10-03 Ｊｆｅスチール株式会社 鋼板の端曲げ方法および装置並びに鋼管の製造方法および設備
KR102325590B1 (ko) * 2018-03-30 2021-11-11 제이에프이 스틸 가부시키가이샤 강판의 단굽힘 방법 및 장치 그리고 강관의 제조 방법 및 설비
CN111918727B (zh) * 2018-03-30 2022-06-07 杰富意钢铁株式会社 钢板的端部弯曲方法及装置以及钢管的制造方法及设备
JP6566231B1 (ja) * 2018-03-30 2019-08-28 Ｊｆｅスチール株式会社 鋼板の端曲げ方法および装置並びに鋼管の製造方法および設備
CN108906927A (zh) * 2018-07-26 2018-11-30 天津鹏宇兴业五金制品有限公司 一种钣金快速弯折装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2365515B2 (de) * 1973-02-14 1977-08-25 Anbiegevorrichtung fuer bleche
DE2455596C3 (de) * 1974-11-23 1978-05-03 Mannesmann Ag, 4000 Duesseldorf Presse mit Konvex- und Konkavwerkzeug zum Anbiegen der Ränder von Blechen
DE2641573C3 (de) * 1976-09-13 1981-06-11 Mannesmann AG, 4000 Düsseldorf Blechbiegepresse
JPS5832010B2 (ja) * 1978-11-06 1983-07-09 日本鋼管株式会社 Ｕｏ法による鋼管製造時の鋼板の端曲げ方法
JPS5949096B2 (ja) * 1980-02-14 1984-11-30 日本鋼管株式会社 Ｕｏｅ鋼管製造時の鋼板の端曲げ方法
SU1660790A1 (ru) * 1989-07-24 1991-07-07 Челябинский Политехнический Институт Им.Ленинского Комсомола Штамп дл изготовлени труб
DE4311228C2 (de) * 1993-04-02 1997-03-20 Mannesmann Ag Verfahren zum Anbiegen der Randstreifen eines zu einem Schlitzrohr zu formenden ebenen Bleches
RU2150343C1 (ru) * 1999-10-12 2000-06-10 Павлов Александр Игоревич Листогибочный пресс
DE102004050784B3 (de) * 2004-10-14 2006-05-24 Mannesmannröhren-Werke Ag Verfahren und Anbiegepresse zum Anbiegen der Randstreifen eines zu einem Schlitzrohr zu formenden ebenen Bleches

Also Published As

Publication number Publication date
CN101626850B (zh) 2012-04-25
ATE471772T1 (de) 2010-07-15
RU2009137364A (ru) 2011-04-20
DE102007012316A1 (de) 2008-09-11
RU2447960C2 (ru) 2012-04-20
EP2134482A1 (de) 2009-12-23
CN101626850A (zh) 2010-01-13
WO2008110132A1 (de) 2008-09-18
DE502008000845D1 (de) 2010-08-05
JP2010520811A (ja) 2010-06-17
DE102007012316B4 (de) 2009-02-26
JP5208973B2 (ja) 2013-06-12
DE102007012316B9 (de) 2009-06-10

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