EP1149641A3 - Bending apparatus for thin-walled metal pipes - Google Patents

Bending apparatus for thin-walled metal pipes Download PDF

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Publication number
EP1149641A3
EP1149641A3 EP01108673A EP01108673A EP1149641A3 EP 1149641 A3 EP1149641 A3 EP 1149641A3 EP 01108673 A EP01108673 A EP 01108673A EP 01108673 A EP01108673 A EP 01108673A EP 1149641 A3 EP1149641 A3 EP 1149641A3
Authority
EP
European Patent Office
Prior art keywords
bending
mandrel
thin
metal pipes
walled metal
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
Application number
EP01108673A
Other languages
German (de)
French (fr)
Other versions
EP1149641B1 (en
EP1149641A2 (en
Inventor
Thomas Dr.-Ing. Flehmig
Uwe Dipl.-Ing. Kneiphoff
Dieter Scheuvens
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.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Stahl AG
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 ThyssenKrupp Stahl AG filed Critical ThyssenKrupp Stahl AG
Publication of EP1149641A2 publication Critical patent/EP1149641A2/en
Publication of EP1149641A3 publication Critical patent/EP1149641A3/en
Application granted granted Critical
Publication of EP1149641B1 publication Critical patent/EP1149641B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/01—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length
    • 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

Abstract

Die Erfindung bezieht sich auf eine Biegevorrichtung für dünnwandige Metallrohre. Die Biegevorrichtung besteht aus einer geraden Rohrführung (1) mit einem darin beim Biegevorgang axial fixierten Dorn, der aus einer am Außenbogen gekrümmten starren Dornspitze (4) und einem Dornschaft (5) besteht. Auf dem Dornschaft (5) und im Bereich des Innenbogens auf einer gekrümmten Stützfläche der Dornspitze (4) ist ein Federlamellenpaket (10) verschiebbar, derart, daß sich beim Biegen eine dem Innenbogen des zu biegenden Rohres entsprechende Stützfläche ergibt. Bei der erfindungsgemäßen Biegevorrichtung ist deshalb das Rohr im aktiven Biegebereich sowohl am Außenbogen als auch am Innenbogen über eine ausreichende axiale Länge innenseitig abgestützt.

Figure 00000001
The invention relates to a bending device for thin-walled metal pipes. The bending device consists of a straight pipe guide (1) with an axially fixed mandrel during the bending process, which consists of a rigid mandrel tip (4) curved on the outer curve and a mandrel shaft (5). On the mandrel shaft (5) and in the area of the inner bend on a curved support surface of the mandrel tip (4), a spring plate pack (10) can be moved such that a support surface corresponding to the inner bend of the pipe to be bent is obtained during bending. In the bending device according to the invention, the tube is therefore supported on the inside over a sufficient axial length in the active bending area both on the outer bend and on the inner bend.
Figure 00000001
EP01108673A 2000-04-27 2001-04-06 Bending apparatus for thin-walled metal pipes Expired - Lifetime EP1149641B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10020728A DE10020728C2 (en) 2000-04-27 2000-04-27 Bending device for thin-walled metal pipes
DE10020728 2000-04-27

Publications (3)

Publication Number Publication Date
EP1149641A2 EP1149641A2 (en) 2001-10-31
EP1149641A3 true EP1149641A3 (en) 2002-10-09
EP1149641B1 EP1149641B1 (en) 2004-02-25

Family

ID=7640153

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01108673A Expired - Lifetime EP1149641B1 (en) 2000-04-27 2001-04-06 Bending apparatus for thin-walled metal pipes

Country Status (2)

Country Link
EP (1) EP1149641B1 (en)
DE (2) DE10020728C2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE620631C (en) * 1931-12-15 1935-10-24 Alois Pyrzak Method for bending angular, in particular square tubes
US3155139A (en) * 1961-09-25 1964-11-03 Baldwin Lima Hamilton Corp Mandrel apparatus for tube bending
DE3641895A1 (en) * 1985-12-18 1987-06-19 Karl Marx Stadt Tech Hochschul Method and device for bending hollow profiles, preferably manometer springs
DE19616048A1 (en) * 1996-04-23 1997-10-30 Epi Ag Spaeth Engineering Process for core-roll-roll bending of hollow profiles
DE19707228A1 (en) * 1997-02-24 1998-08-27 Rudi Maas Mandrel for manual, semi- or fully-automatic pipe bender

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE620631C (en) * 1931-12-15 1935-10-24 Alois Pyrzak Method for bending angular, in particular square tubes
US3155139A (en) * 1961-09-25 1964-11-03 Baldwin Lima Hamilton Corp Mandrel apparatus for tube bending
DE3641895A1 (en) * 1985-12-18 1987-06-19 Karl Marx Stadt Tech Hochschul Method and device for bending hollow profiles, preferably manometer springs
DE19616048A1 (en) * 1996-04-23 1997-10-30 Epi Ag Spaeth Engineering Process for core-roll-roll bending of hollow profiles
DE19707228A1 (en) * 1997-02-24 1998-08-27 Rudi Maas Mandrel for manual, semi- or fully-automatic pipe bender

Also Published As

Publication number Publication date
EP1149641B1 (en) 2004-02-25
DE10020728A1 (en) 2001-11-08
DE10020728C2 (en) 2002-06-27
DE50101528D1 (en) 2004-04-01
EP1149641A2 (en) 2001-10-31

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