EP2134482A1 - 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 blechesInfo
- Publication number
- EP2134482A1 EP2134482A1 EP08706871A EP08706871A EP2134482A1 EP 2134482 A1 EP2134482 A1 EP 2134482A1 EP 08706871 A EP08706871 A EP 08706871A EP 08706871 A EP08706871 A EP 08706871A EP 2134482 A1 EP2134482 A1 EP 2134482A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bending
- lower tool
- edge
- contour
- sheet
- 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
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)
Description
Claims
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 true EP2134482A1 (de) | 2009-12-23 |
EP2134482B1 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 (de) |
JP (1) | JP5208973B2 (de) |
CN (1) | CN101626850B (de) |
AT (1) | ATE471772T1 (de) |
DE (2) | DE102007012316B9 (de) |
RU (1) | RU2447960C2 (de) |
WO (1) | WO2008110132A1 (de) |
Cited By (1)
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 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2419227B1 (de) * | 2009-04-16 | 2013-02-13 | Bergrohr GmbH Siegen | 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 |
KR102325590B1 (ko) * | 2018-03-30 | 2021-11-11 | 제이에프이 스틸 가부시키가이샤 | 강판의 단굽힘 방법 및 장치 그리고 강관의 제조 방법 및 설비 |
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 |
RU2745056C1 (ru) * | 2018-03-30 | 2021-03-18 | ДжФЕ СТИЛ КОРПОРЕЙШН | Способ и устройство для гибки краев толстого стального листа и способ и установка для изготовления стальной трубы |
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)
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 |
-
2007
- 2007-03-09 DE DE102007012316A patent/DE102007012316B9/de not_active Expired - Fee Related
-
2008
- 2008-01-30 WO PCT/DE2008/000211 patent/WO2008110132A1/de active Application Filing
- 2008-01-30 EP EP08706871A patent/EP2134482B1/de not_active Not-in-force
- 2008-01-30 JP JP2009552057A patent/JP5208973B2/ja not_active Expired - Fee Related
- 2008-01-30 RU RU2009137364/02A patent/RU2447960C2/ru not_active IP Right Cessation
- 2008-01-30 DE DE502008000845T patent/DE502008000845D1/de active Active
- 2008-01-30 CN CN2008800076319A patent/CN101626850B/zh not_active Expired - Fee Related
- 2008-01-30 AT AT08706871T patent/ATE471772T1/de active
Non-Patent Citations (1)
Title |
---|
See references of WO2008110132A1 * |
Cited By (1)
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 |
Also Published As
Publication number | Publication date |
---|---|
DE102007012316B4 (de) | 2009-02-26 |
ATE471772T1 (de) | 2010-07-15 |
JP5208973B2 (ja) | 2013-06-12 |
CN101626850A (zh) | 2010-01-13 |
RU2009137364A (ru) | 2011-04-20 |
JP2010520811A (ja) | 2010-06-17 |
DE102007012316B9 (de) | 2009-06-10 |
CN101626850B (zh) | 2012-04-25 |
EP2134482B1 (de) | 2010-06-23 |
WO2008110132A1 (de) | 2008-09-18 |
DE502008000845D1 (de) | 2010-08-05 |
DE102007012316A1 (de) | 2008-09-11 |
RU2447960C2 (ru) | 2012-04-20 |
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