EP1690607B1 - Verfahren zur Herstellung von Rohren - Google Patents

Verfahren zur Herstellung von Rohren Download PDF

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Publication number
EP1690607B1
EP1690607B1 EP06000555A EP06000555A EP1690607B1 EP 1690607 B1 EP1690607 B1 EP 1690607B1 EP 06000555 A EP06000555 A EP 06000555A EP 06000555 A EP06000555 A EP 06000555A EP 1690607 B1 EP1690607 B1 EP 1690607B1
Authority
EP
European Patent Office
Prior art keywords
forming
die
profile
welding
forming press
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
EP06000555A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1690607A1 (de
Inventor
Wolfgang Streubel
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.)
Benteler Automobiltechnik GmbH
Original Assignee
Benteler Automobiltechnik 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 Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
Publication of EP1690607A1 publication Critical patent/EP1690607A1/de
Application granted granted Critical
Publication of EP1690607B1 publication Critical patent/EP1690607B1/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
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0815—Making tubes with welded or soldered seams without continuous longitudinal movement of the sheet during the bending operation

Definitions

  • the invention relates to a method for producing pipes according to the measures in the preamble of patent claim 1.
  • DD 276 043 A1 includes a method and an apparatus for producing thin-walled tubes of the prior art.
  • sheet metal blanks are produced by indirect resistance lap welding using a lower die having a semi-circular pipe cross-section, a cylindrical mandrel with a machined copper rail, and two upper dies.
  • a disadvantage of this method is that the forming tool must be held in position during resistance overlap welding by the forming press. The forming press is blocked during the welding process for further forming steps.
  • the present invention seeks to provide a method for producing pipes from sheet metal blanks, in which the throughput of the forming press can be increased.
  • the upper tool and the lower tool with the inner tube profile are locked against each other and are removed in the locked state from the forming press.
  • the forming press is available at this moment for further forming operations.
  • the welding of the longitudinal edges of the pipe profile takes place outside the forming press, but within the forming tool.
  • an opening releasing the longitudinal edges of the pipe profile is provided in the upper tool, through which a welding device engage in the upper tool and can be guided along the longitudinal edges. After welding the longitudinal edges, the upper tool is separated from the lower tool.
  • Upper tool and lower tool are now available for a new forming process.
  • a plurality of sub-tools is provided, which are transported by means of transport between a forming press and a welding station back and forth.
  • a forming press and a welding station back and forth.
  • the subject of claim 3 is that the interlocked upper and lower tools are in turn fed to a forming press after welding of the longitudinal edges of the pipe section to cancel the lock.
  • this may be the same forming press, in which also the lock, that is also the transformation of the sheet metal plate to a tube profile.
  • the opening in the upper tool is closed during the second forming step by a closure bar, so that the opening does not affect the forming process.
  • the closure strip can remain in the forming press even after the removal of the upper tool and consequently engages subsequently used upper tools. This has the advantage that the longitudinal edges can be welded together immediately after removal of the locked forming tool without the opening would have to be additionally exposed.
  • a laser hybrid welding process that is a combination of laser and arc welding is used. While conventional laser welding has its strengths in speed and deep welding, arc welding through the filler material offers advantages in gap inspection and seam width. In the laser hybrid welding process, the positive characteristics of the individual processes are superimposed and lead to a higher efficiency with better quality results. Particularly in the thin sheet metal sector, the welding speed can be increased by up to 500% compared to gas shielded welding alone. A significant advantage of welding the longitudinal edges within the forming tool is that the tolerances of the components are maintained exactly what is absolutely necessary for a laser welding process. Separate devices for component fixing eliminated.
  • Figure 1 shows a forming press 1, in which a sheet metal blank 2 is formed in a first manufacturing step to a U-profile.
  • the sheet metal blank 2 is inserted into a forming tool 5 and pressed by a punch 3 in a U-shaped recess 4 of a lower tool 5.
  • a first forming step a U-profile, which is formed in a further forming step to a tube profile.
  • FIG. 2 shows the subsequent production step.
  • the U-profile of Figure 1 is formed in a further forming press 6 by a moving in the direction of arrow P1 upper tool 7 to a tube profile R.
  • the U-profile is located during the forming process in a lower tool 8.
  • By forming the first parallel extending legs of the U-profile are curved so that their longitudinal edges 9, 10 in the central region of the upper tool 7 are opposite.
  • the upper tool 7 is locked to the lower tool 8 via locking means 11 and removed in the direction of the arrow P2 from the forming press 6.
  • the forming press 6 is now available for a further forming process.
  • the locked forming tool 12 is fed to a welding station, which is illustrated in Figure 3 by a welding head 13.
  • the upper tool is configured such that the welding head 13 can engage in an opening 14 exposing the longitudinal edges 9, 10 of the tubular profile, so that the longitudinal edges 9, 10 can be welded by inserting the welding head 13 in the direction of the arrow P3.
  • the tube profile R is located after the welding process in the still locked forming tool 12, which in turn is supplied to unlock the forming press 6.
  • the unlocked from the lower tool 8 upper tool 7 is raised, so that the Tube profile R can be removed from the lower tool 8.
  • another preformed to a U-profile sheet metal blank 2 is inserted into the open forming tool 12 and formed as described above to form a tubular profile R.
  • closure strip 15 is located during the forming a closure strip 15 within the opening 14.
  • the closure strip 15 is during forming part of the Umformhohlraums and relative to the upper tool 7 relatively displaceable (arrow P4)
  • the closure strip 15 remains in the forming press 6, so that the opening 14 after removal of the forming tool 12 allows immediate access to the longitudinal edges 9, 10 of the tubular profile R.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Laser Beam Processing (AREA)
EP06000555A 2005-02-11 2006-01-12 Verfahren zur Herstellung von Rohren Not-in-force EP1690607B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005006578A DE102005006578B3 (de) 2005-02-11 2005-02-11 Verfahren zur Herstellung von Rohren

Publications (2)

Publication Number Publication Date
EP1690607A1 EP1690607A1 (de) 2006-08-16
EP1690607B1 true EP1690607B1 (de) 2007-07-11

Family

ID=35852148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06000555A Not-in-force EP1690607B1 (de) 2005-02-11 2006-01-12 Verfahren zur Herstellung von Rohren

Country Status (4)

Country Link
US (1) US7350386B2 (es)
EP (1) EP1690607B1 (es)
DE (1) DE102005006578B3 (es)
ES (1) ES2288749T3 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103495627A (zh) * 2013-09-24 2014-01-08 中国人民解放军总参谋部工程兵科研三所 圆筒型泡沫铝的加工工艺

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US8408065B2 (en) * 2009-03-18 2013-04-02 Bp Corporation North America Inc. Dry-coupled permanently installed ultrasonic sensor linear array
DE102009020146B3 (de) * 2009-04-08 2010-06-10 V & M Deutschland Gmbh Verfahren und Vorrichtung zum Verbinden der Enden von Rohren aus Stahl mittels Orbitalschweißen in Hybridtechnik
US8356396B2 (en) * 2009-09-03 2013-01-22 Middleville Tool & Die Company Method for making threaded tube
DE102010016960A1 (de) * 2010-05-14 2011-11-17 Thyssenkrupp Steel Europe Ag Verfahren zur Herstellung von Hohlprofilen mit einem Längsflansch
DE102010037533A1 (de) * 2010-09-14 2012-03-15 Thyssenkrupp Steel Europe Ag Vorrichtung und Verfahren zur Herstellung zumindest teilweise geschlossener Hohlprofile mit geringer Taktzeit
DE102010037534A1 (de) * 2010-09-14 2012-03-15 Thyssenkrupp Steel Europe Ag Vorrichtung und Verfahren zur Herstellung von zumindest teilweise geschlossenen Hohlprofilen mit drehbaren Gesenkhälften und geringer Taktzeit
DE102011050383B4 (de) * 2011-05-16 2017-04-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Bearbeitungswerkzeug mit mindestens zwei Arbeitsstationen
CN103286158B (zh) * 2012-02-29 2016-06-22 宝山钢铁股份有限公司 利用两步成型法制备不等厚直缝激光焊管的方法及装置
JP5868891B2 (ja) * 2012-05-29 2016-02-24 Ｊｆｅスチール株式会社 異径管状部品の製造方法
CN103990694A (zh) * 2014-04-29 2014-08-20 成都极点精密模具有限公司 一种薄壁冷冲模
CN103990697A (zh) * 2014-04-29 2014-08-20 成都极点精密模具有限公司 一种堵漏卡子冷冲模
CN103962431A (zh) * 2014-05-12 2014-08-06 滁州丽普新型建材有限公司 一种水泥电杆圆环形钢板圈冲压机
US11207722B2 (en) * 2018-09-10 2021-12-28 Amsted Rail Company, Inc. Systems and methods for manufacturing a ring from a metal sheet
CN111805103A (zh) * 2020-06-19 2020-10-23 张家港九霞激光设备有限公司 一种改进型的激光焊接夹紧定位装置
SE544646C2 (en) * 2020-07-14 2022-10-04 Cwl Patent Ab Method of producing a ladder and a ladder manufactured according to said method
US11767087B2 (en) * 2021-06-30 2023-09-26 FabX Industries, Inc. Automated method for nose cone manufacturing

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103495627A (zh) * 2013-09-24 2014-01-08 中国人民解放军总参谋部工程兵科研三所 圆筒型泡沫铝的加工工艺
CN103495627B (zh) * 2013-09-24 2016-04-13 中国人民解放军总参谋部工程兵科研三所 圆筒型泡沫铝的加工工艺

Also Published As

Publication number Publication date
DE102005006578B3 (de) 2006-03-16
EP1690607A1 (de) 2006-08-16
ES2288749T3 (es) 2008-01-16
US7350386B2 (en) 2008-04-01
US20070045236A1 (en) 2007-03-01

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