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Method of bending tubes

Info

Publication number
EP0401819A3
EP0401819A3 EP19900110801 EP90110801A EP0401819A3 EP 0401819 A3 EP0401819 A3 EP 0401819A3 EP 19900110801 EP19900110801 EP 19900110801 EP 90110801 A EP90110801 A EP 90110801A EP 0401819 A3 EP0401819 A3 EP 0401819A3
Authority
EP
Grant status
Application
Patent type
Prior art keywords
method
bending
tubes
bending tubes
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.)
Withdrawn
Application number
EP19900110801
Other languages
German (de)
French (fr)
Other versions
EP0401819A2 (en )
Inventor
Heinrich Rapp
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.)
RASI MASCHINENBAU und -HANDELS GmbH
Original Assignee
RASI MASCHINENBAU UND -HANDELS 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

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00Bending rods, profiles, or tubes
    • B21D7/14Bending rods, profiles, or tubes combined with measuring of bends or lengths

Abstract

Die Erfindung bezieht sich auf ein Verfahren zum Biegen von Rohren aus bestimmtem Werkstoff und mit bestimmter Quer schnittsgestalt um einen Sollwinkel α i und mit einem be stimmten Biegeradius (nachfolgend als Biegeaufgabe bezeich net), bei dem zunächst eine Überprüfung, ob für die Biege aufgabe bereits ein passender Biegewinkel γ i und eine Kenn größe bekannt sind, welche ein Maß für die Rückfederung des Rohres bei der betreffenden Biegeaufgabe ist, erfolgt. The invention relates to a method for bending a pipe of a certain material and certain cross-sectional shape to a target angle α i and a be voted bending radius (hereinafter referred to as bending task designated net), in which first a check whether there is already for the bending task an appropriate bend angle γ i and a characteristic size are known, which is a measure of the springback of the tube at the relevant bending task is performed. Ist der passende Biegewinkel und die Kenngröße unbekannt, so wird das Rohr um einen Winkel α ′ / i gebogen; Is the appropriate bend angle, and the characteristic variable is unknown, the tube is α to an angle '/ i bent; die Kenngröße, welche ein Maß für die Rückfederung des Rohres bei der be treffenden Biegeaufgabe ist, und ein evtl. Biegewinkel γ i , der so gewählt ist, daß nach Biegen des Rohres um γ i = α i + ε i unter Berücksichtigung der Rückfederung eine Bie gung um den Sollwinkel α i verbleibt, bestimmt und gespei chert. the characteristic quantity which is a measure of the springback of the pipe at the be taken bending task, and a possibly bending angle γ i, which is selected such that after bending the tube by γ i = α i + ε i is a taking into account the springback Bie supply remains at the desired angle α i, is determined and vomit chert. Das Rohr wird auf den Biegewinkel γ i weitergebogen. The tube is further bent on the bending angle γ i. Ist bereits die gleiche Biegeaufgabe gelöst worden, so wird das Rohr bei weiteren gleichen Biegeaufgaben um den Biegewinkel γ i gebogen. Is already the same bending task has been solved, so the tube is in further tasks same bending around the bending angle γ i bent. Beim Lösen dieser weiteren gleichen Biegeaufgaben wird die Kenngröße ermittelt und mit der be reits bekannten Kenngröße verglichen und evtl. ein neuer passender Biegewinkel bestimmt. In solving this further same bending tasks, the parameter is determined and compared with the known already be characteristic and possibly determine a new appropriate bending angle.
EP19900110801 1989-06-08 1990-06-07 Method of bending tubes Withdrawn EP0401819A3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE3918714 1989-06-08
DE3918714 1989-06-08

Publications (2)

Publication Number Publication Date
EP0401819A2 true EP0401819A2 (en) 1990-12-12
EP0401819A3 true true EP0401819A3 (en) 1991-06-26

Family

ID=6382350

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900110801 Withdrawn EP0401819A3 (en) 1989-06-08 1990-06-07 Method of bending tubes

Country Status (1)

Country Link
EP (1) EP0401819A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2680711B1 (en) * 1991-08-30 1995-02-17 Brasil Compressores Sa Process for the permanent bending deformable body.
CA2221324A1 (en) * 1997-11-17 1999-05-17 Eagle Precision Technologies Inc. Tub bending apparatus and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1810533A1 (en) * 1968-11-23 1970-06-25 Peddinghaus Dr Carl Ullrich Bending machine for bars, wires and profiles
DE1552111A1 (en) * 1966-01-21 1970-09-17 Thaelmann Schwermaschbau Veb A method for controlling and measuring rod sections during bending on section bending machines
US3821525A (en) * 1972-03-16 1974-06-28 Conrac Corp Method and apparatus for automatically compensated tube bending
US4131003A (en) * 1977-06-07 1978-12-26 The Boeing Company Semiautomatic control system for tube bending machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1552111A1 (en) * 1966-01-21 1970-09-17 Thaelmann Schwermaschbau Veb A method for controlling and measuring rod sections during bending on section bending machines
DE1810533A1 (en) * 1968-11-23 1970-06-25 Peddinghaus Dr Carl Ullrich Bending machine for bars, wires and profiles
US3821525A (en) * 1972-03-16 1974-06-28 Conrac Corp Method and apparatus for automatically compensated tube bending
US4131003A (en) * 1977-06-07 1978-12-26 The Boeing Company Semiautomatic control system for tube bending machine

Also Published As

Publication number Publication date Type
EP0401819A2 (en) 1990-12-12 application

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