WO2008110132A1 - Procédé et presse à plier destinés à plier les bandes latérales d'une tôle à former sous forme de tube fendu - Google Patents

Procédé et presse à plier destinés à plier les bandes latérales d'une tôle à former sous forme de tube fendu Download PDF

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Publication number
WO2008110132A1
WO2008110132A1 PCT/DE2008/000211 DE2008000211W WO2008110132A1 WO 2008110132 A1 WO2008110132 A1 WO 2008110132A1 DE 2008000211 W DE2008000211 W DE 2008000211W WO 2008110132 A1 WO2008110132 A1 WO 2008110132A1
Authority
WO
WIPO (PCT)
Prior art keywords
bending
lower tool
edge
contour
sheet
Prior art date
Application number
PCT/DE2008/000211
Other languages
German (de)
English (en)
Inventor
Dr. Johannes Gross-Weege
Dr. Manfred Sawitzki
Ludwig Oesterlein
Dr. Jan Neuenhahn
Manfred Lenuck
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
Priority to AT08706871T priority Critical patent/ATE471772T1/de
Priority to CN2008800076319A priority patent/CN101626850B/zh
Priority to EP08706871A priority patent/EP2134482B1/fr
Priority to JP2009552057A priority patent/JP5208973B2/ja
Priority to DE502008000845T priority patent/DE502008000845D1/de
Publication of WO2008110132A1 publication Critical patent/WO2008110132A1/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
    • 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 known for example from DE 26 41 573 A1, DE 43 11 228 A1 or DE 25 10 488 C3, which deals with the problem of undeformed Dealing with end areas when bending the edge strips of flat sheets (roof edge formation).
  • DE 23 65 515 A1 has attempted to guide the edge strips through upper and lower bending rollers whose convex or concave peripheral contours correspond to the radius of the edge regions to be bent.
  • 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.
  • 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 a surface pressure of at least one over the entire bending process Hertz 's 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.
  • Figure 1 is a schematic diagram of the Anbiegepresse invention with a lower
  • FIG. 1 the principle of an inventive bending press 11 is shown with a vertically and horizontally adjustable under load 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 Hertz 's pressing with the edge strip 2 to be approached allows and as 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 tool 3 is moved vertically and horizontally to the final position during the bending process, in such a way that the point of application of force P remains at the original location of the end area of the edge strip 2 during the bending process, but on the working surface of the lower tool 3 in the 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)

Abstract

L'invention concerne un procédé destiné à plier une tôle plane à former sous forme de tube fendu dans une presse à plier (11) comportant un outil supérieur (1) disposé fixement dans le cadre de presse (4), dont le contour correspond au contour de pliage à obtenir, et un outil inférieur (3) pouvant être décalé verticalement face à l'outil supérieur (1), la bande latérale (3) de la tôle serrée de façon fixe dans le cadre de presse (4) étant pliée de manière à obtenir le contour périphérique au cours d'une étape de travail. Dès le début du processus de pliage, la surface de travail de l'outil inférieur (3), entrant en contact avec le côté inférieur de la bande latérale (2), entre en appui plan au moins à la manière d'une compression hertzienne. Pour éviter la formation d'arêtes de toit et des déformations plastiques ou des écrasements, la mise en contact plan doit être maintenue à un écart minimal et constant par rapport au point d'application de force (P) au cours de l'ensemble du processus de pliage, au moyen d'un mouvement horizontal et vertical coordonné de l'outil inférieur (3). La presse à plier (11) selon l'invention sert à la mise en oeuvre dudit procédé.
PCT/DE2008/000211 2007-03-09 2008-01-30 Procédé et presse à plier destinés à plier les bandes latérales d'une tôle à former sous forme de tube fendu WO2008110132A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT08706871T ATE471772T1 (de) 2007-03-09 2008-01-30 Verfahren und anbiegepresse zum anbiegen der randstreifen eines zu einem schlitzrohr zu formenden bleches
CN2008800076319A CN101626850B (zh) 2007-03-09 2008-01-30 用于弯曲待形成为有缝管的板材的边缘带的方法和弯曲压力机
EP08706871A EP2134482B1 (fr) 2007-03-09 2008-01-30 Procédé et presse à plier destinés à plier les bandes latérales d'une tôle à former sous forme de tube fendu
JP2009552057A JP5208973B2 (ja) 2007-03-09 2008-01-30 オープンシーム管に成形される金属薄板の縁帯を曲げる方法および曲げプレス
DE502008000845T DE502008000845D1 (de) 2007-03-09 2008-01-30 Verfahren und anbiegepresse zum anbiegen der randstreifen eines zu einem schlitzrohr zu formenden bleches

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007012316.9 2007-03-09
DE102007012316A DE102007012316B9 (de) 2007-03-09 2007-03-09 Verfahren und Anbiegepresse zum Anbiegen der Randstreifen eines zu einem Schlitzrohr zu formenden ebenen Bleches

Publications (1)

Publication Number Publication Date
WO2008110132A1 true WO2008110132A1 (fr) 2008-09-18

Family

ID=39651359

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000211 WO2008110132A1 (fr) 2007-03-09 2008-01-30 Procédé et presse à plier destinés à plier les bandes latérales d'une tôle à former sous forme de tube fendu

Country Status (7)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011173168A (ja) * 2010-02-23 2011-09-08 Sms Meer Gmbh 板状部材の曲げ加工方法
US9149850B2 (en) 2008-12-26 2015-10-06 Nippon Steel & Sumitomo Metal Corporation Roll former for steel plate and roll bending method for steel plate using same

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2251109A1 (fr) * 2009-04-16 2010-11-17 Gräbener Maschinentechnik GmbH & Co. KG Dispositif et procédé de formage d'une tôle
WO2010118759A2 (fr) * 2009-04-16 2010-10-21 Gmbh Siegen Bergrohr Presse à cintrer pour feuilles de tôle
JP6566232B1 (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
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
WO2019188001A1 (fr) * 2018-03-30 2019-10-03 Ｊｆｅスチール株式会社 Procédé et dispositif pour cintrer le flanc d'une plaque d'acier, et procédé et équipement de fabrication de tuyau en acier
KR102325591B1 (ko) * 2018-03-30 2021-11-11 제이에프이 스틸 가부시키가이샤 강판의 단굽힘 방법 및 장치 그리고 강관의 제조 방법 및 설비
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2455596A1 (de) * 1974-11-23 1976-08-12 Mannesmann Ag Presse zum anbiegen der raender von blechen, insbesondere von blechen fuer die grossrohrherstellung
DE2510488A1 (de) * 1975-03-11 1976-09-23 Siempelkamp Gmbh & Co Hydraulische blechbiegepresse
DE3105351A1 (de) * 1980-02-14 1981-12-17 Nippon Kokan K.K., Tokyo "verfahren zum biegen einer stahlplatte und formen eines stahlrohres und vorrichtung zur vorbereitung der kante einer stahlplatte fuer ein derartiges verfahren"
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

Family Cites Families (6)

* 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
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
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2455596A1 (de) * 1974-11-23 1976-08-12 Mannesmann Ag Presse zum anbiegen der raender von blechen, insbesondere von blechen fuer die grossrohrherstellung
DE2510488A1 (de) * 1975-03-11 1976-09-23 Siempelkamp Gmbh & Co Hydraulische blechbiegepresse
DE3105351A1 (de) * 1980-02-14 1981-12-17 Nippon Kokan K.K., Tokyo "verfahren zum biegen einer stahlplatte und formen eines stahlrohres und vorrichtung zur vorbereitung der kante einer stahlplatte fuer ein derartiges verfahren"
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9149850B2 (en) 2008-12-26 2015-10-06 Nippon Steel & Sumitomo Metal Corporation Roll former for steel plate and roll bending method for steel plate using same
JP2011173168A (ja) * 2010-02-23 2011-09-08 Sms Meer Gmbh 板状部材の曲げ加工方法

Also Published As

Publication number Publication date
ATE471772T1 (de) 2010-07-15
DE502008000845D1 (de) 2010-08-05
CN101626850B (zh) 2012-04-25
EP2134482B1 (fr) 2010-06-23
RU2447960C2 (ru) 2012-04-20
JP2010520811A (ja) 2010-06-17
JP5208973B2 (ja) 2013-06-12
EP2134482A1 (fr) 2009-12-23
DE102007012316B4 (de) 2009-02-26
DE102007012316A1 (de) 2008-09-11
RU2009137364A (ru) 2011-04-20
DE102007012316B9 (de) 2009-06-10
CN101626850A (zh) 2010-01-13

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