EP1115516B1 - Vorrichtung und verfahren zum biegen rohr- oder stabförmiger gegenstände - Google Patents

Vorrichtung und verfahren zum biegen rohr- oder stabförmiger gegenstände Download PDF

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Publication number
EP1115516B1
EP1115516B1 EP99969360A EP99969360A EP1115516B1 EP 1115516 B1 EP1115516 B1 EP 1115516B1 EP 99969360 A EP99969360 A EP 99969360A EP 99969360 A EP99969360 A EP 99969360A EP 1115516 B1 EP1115516 B1 EP 1115516B1
Authority
EP
European Patent Office
Prior art keywords
movable roller
bending
roller
conveying element
arm
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.)
Expired - Lifetime
Application number
EP99969360A
Other languages
English (en)
French (fr)
Other versions
EP1115516A1 (de
Inventor
Johannes Theodorus Scholten
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.)
Dynobend Bv
Original Assignee
Metaalbedrijf Busschers BV
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 Metaalbedrijf Busschers BV filed Critical Metaalbedrijf Busschers BV
Publication of EP1115516A1 publication Critical patent/EP1115516A1/de
Application granted granted Critical
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Anticipated expiration legal-status Critical
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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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die

Definitions

  • the invention relates to an apparatus for bending tubular or rod-shaped material, comprising a bending head provided with at least one rigidly mounted roller, at least one movable roller, suspension means, a steering plate, driven by motors, for enabling the movable roller to translate in a first translation direction, to translate in a second translation direction and to rotate around a rotation axis and a conveying element for conveying the material to be machined along its principal axis to the bending head.
  • An apparatus of this type is known from EP-A-0 032 795.
  • the movable roller is suspended in the steering plate.
  • the steering plate and the steering motors are all mounted in front of the rigidly mounted roller, where they may form an obstacle which limits the performance of the apparatus.
  • the apparatus according to the invention is characterized in that the at least one movable roller is attached to a first end of an arm, the steering plate is attached to a second end of the arm and the suspension means, supporting the arm, is supported in a spherical bearing, positioned between the first and the second end. In this way, the steering plate and the motors can be mounted completely out of the way of the bending head, forming no hindrance to the bending head.
  • a favourable embodiment of the apparatus is thereto characterized in that the rigidly mounted roller is provided with drive means for supporting axial movements made by the conveying element.
  • a favourable embodiment of the inventive apparatus is thereto characterized in that the conveying element is provided with drive means for rotating the material to be machined round its principal axis.
  • Material to be bent is pushed into the groove of a movable roller while being bent.
  • a favourable embodiment which exploits this fact is characterized in that the movable roller comprises only one roll. With one roll it is still more easy to replace the bending head when another type of material is to be bent.
  • the invention also relates to a method for bending of tubular or rod-shaped material, using the apparatus as defined in claim 1.
  • a favourable realisation of the inventive method is characterized in that in the bending process the material to be bent is rotated round its principal axis by the conveying element in order to support the movements of the movable roller.
  • Fig. 1 schematically represents, in top view, a possible embodiment of the bending apparatus, where the material 1 to be processed is conveyed with the aid of a conveying element 2 to a bending head 3.
  • Conveying element 2 comprises a slide 4, which may run along a bed 5, which bed 5 is mounted onto a frame 6.
  • Conveying element 2 further comprises a clamp, not shown in Fig. 1 and well-known in the art, for clamping the material 1 to be processed, a first motor 7, for moving slide 4 towards bending head 3, a second motor 8, for rotating the material 1 to be processed together with the clamp round its principal axis, a first measuring instrument 9, for measuring the movement of the slide and a second measuring instrument 10, for measuring the rotation of the material to be processed.
  • First measuring instrument 9 and second measuring instrument 10 are electromagnetic transducers, well-known in the art or electro-optical transducers integrated into slide 4. Measuring instrument 9 and second measuring instrument 10 determine the tolerances in the final product as produced by the apparatus.
  • Bending head 3 consists of a rigidly mounted roller 11 and a movable roller 12.
  • Movable roller 12 is connected, via an arm 13 and suspension means 14 to a steering element 15, which may be steered such that movable roller 12 may translate in the plane of the drawing, perpendicular to the plane of the drawing, can rotate round arm 13 and moreover can perform linear combinations of these movements.
  • element 4 conveys the material to be processed and, if necessary, rotates it round its principle axis, at least substantial all types of curvatures can be given to the material 1 to be processed.
  • some test specimen as for example a tube rebounds after bending, dependent on the type of material and the thickness of the wall, but this is in fact true for every type of bending apparatus.
  • Fig. 2 schematically represents, in top view, a possible embodiment of the bending head 3, together with suspension means 14 and steering element 15.
  • Steering element 15 comprises a system of three motors and three spindles, for translating and rotating arm 13, the movements of which are transferred to movable roller 12 via the suspension means 14, which are supported by a spherical bearing.
  • Movable roller 12 has in fact only one roll, in which a groove is made, which groove encloses half of the material 1 to be processed. This substantially prevents the material 1 to be processed from buckling or deteriorating otherwise, while for movable roller 12 a large degree of freedom is guaranteed.
  • Rigidly mounted roller 11 consists of four rolls, also provided with grooves, which are dimensioned such that the material 1 to be processed is supported all round yet it still remains possible to rotate the material 1 to be processed round its principal axis. Strictly speaking it is not necessary to drive the four rolls of rigidly mounted roller 11, but in this embodiment the rolls are driven and they are moreover mutually coupled with toothed wheels, mounted below the rolls.
  • the advantage is that the material 1 to be processed deteriorates to a lesser extent and a sudden buckling of for example a thin-walled tube between the conveying element 2 the rigidly mounted roller 11 is prevented.
  • Rigidly mounted roller 11, together with the toothed wheels below it, is built as a group that can easily be removed to be exchanged by another group if another type of material is to be processed.
  • movable roller 13 is connected to arm 13 such that it is readily exchanged, for example with one bolt.
  • By exchanging the entire bending head it is possible to mount for example smaller rolls with a smaller centre distance, such that finer material may be processed and that smaller radii may be realized. It is also possible to make a special bending head for special, non-circular material like strip. It is true that the strip-shaped material cannot be rotated within rigidly mounted roller 11, but all bends commonly used in processing strip can be made solely by manipulating movable roller 12.
  • movable roller 13 may be of advantage to provide movable roller 13 with two rolls, notwithstanding the fact that only one roll is actively used in the bending process. This is for example the case if a number of bends must be made to the left and to the right. With one roll this is possible by rotating the material 1 every time 180 degrees with the aid of conveying element 2 or by moving movable roller 12 every time underneath the material 1 to be processed, but time can be saved by using two rolls.
  • Fig. 3 schematically represents, in side view, a possible embodiment of the steering element 15.
  • Steering element 15 comprises three motors 16,17,18, on one side mounted with hinges 19,20,21 to a frame 6, on another side provided with spindles 22,23,24, which spindles cooperate with screw-threaded holes in spherical bearings 25,26,27.
  • a plate 28 can be translated in a vertical direction by steering motor 16, or translated in a horizontal direction by steering motors 17,18 in the same manner, or rotated around spherical bearing 25 by steering motors 17,18 in an opposite manner.
  • Arm 13 is connected to the centre of plate 28 with the aid of a universal joint, not shown in the figure, such that the translations and the rotation can be exactly followed and passed to movable roller 12 via suspension means 14.
  • Both the universal joint, connected to the centre of plate 28 and the spherical bearing 25 are mounted at the highest possible position within frame 6, as a consequence of which arm 13 runs practically parallel to the material 1 to be processed. This means that the material 1 to be processed is always situated in an optimal fashion in movable roller 12.
  • spindles 22,23, 24, ball-guided spindles have been chosen, because any clearance here will immediately influence the tolerances of the product.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (6)

  1. Vorrichtung für das Biegen von röhren- oder stabförmigem Material (1), welche Vorrichtung einen Biegekopf (3), versehen mit zumindest einer fest montierten Walze (11) und zumindest einer beweglichen Walze (12), und Aufhängemittel (14), eine von den Antrieben (16,17,18) angetriebene Leitplatte (28), damit die bewegliche Walze (12) in eine erste Verschiebungsrichtung und eine zweite Verschiebungsrichtung verschoben und rund um die Drehachse gedreht werden kann, und weiterhin ein Transportelement (2) für den Transport des zu bearbeitenden Materials (1) entlang seiner Hauptachse zum Biegekopf (3) hin umfasst, dadurch gekennzeichnet, dass zumindest eine bewegliche Walze (12) mit einem ersten Ende des Armes (13) und die Leitplatte (28) mit einem zweiten Ende des Armes (13) verbunden ist und die Aufhängemittel (14) für den Arm in einer zwischen dem ersten Ende und dem zweiten Ende angeordneten kugelförmigen Lagerung positioniert sind.
  2. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass die mit Antriebsmitteln versehene, fest montierte Walze (11) die von dem Transportelement durchzuführenden axialen Bewegungen unterstützt.
  3. Vorrichtung gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Transportelement (2) mit Antriebsmitteln (8) versehen ist, für das Drehen des zu bearbeitenden Materials (1) rund um seine Hauptachse.
  4. Vorrichtung gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die bewegliche Walze (12) nur einen Zylinder umfasst.
  5. Methode für das Biegen von röhren- oder stabförmigem Material (1), unter Verwendung einer Vorrichtung gemäß Anspruch 1.
  6. Methode gemäß Anspruch 5, dadurch gekennzeichnet, dass das zu biegende Material (1) während des Biegeverfahrens von dem Transportelement (2) rund um seine Hauptachse gedreht wird, zur Unterstützung der Bewegungen der beweglichen Walze (12).
EP99969360A 1998-09-24 1999-09-21 Vorrichtung und verfahren zum biegen rohr- oder stabförmiger gegenstände Expired - Lifetime EP1115516B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1010174 1998-09-24
NL1010174A NL1010174C1 (nl) 1998-09-24 1998-09-24 Inrichting en werkwijze voor het buigen van buisvormig en staafvormig materiaal.
PCT/NL1999/000587 WO2000016921A1 (en) 1998-09-24 1999-09-21 Apparatus and method for bending tubular or rod-shaped material

Publications (2)

Publication Number Publication Date
EP1115516A1 EP1115516A1 (de) 2001-07-18
EP1115516B1 true EP1115516B1 (de) 2002-10-16

Family

ID=19767874

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99969360A Expired - Lifetime EP1115516B1 (de) 1998-09-24 1999-09-21 Vorrichtung und verfahren zum biegen rohr- oder stabförmiger gegenstände

Country Status (4)

Country Link
EP (1) EP1115516B1 (de)
DE (1) DE69903574T2 (de)
NL (1) NL1010174C1 (de)
WO (1) WO2000016921A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2010013333A (es) 2008-06-04 2011-04-05 Amgen Inc Mutantes fgf21 y usos de los mismos.
EP2628918B1 (de) 2012-02-15 2020-04-22 Ford Global Technologies, LLC Verfahren zum Betrieb einer Brennkraftmaschine mit Turboladeranordnung und Steuerungseinheit für eine Brennkraftmaschine mit Turboladeranordnung
RU206818U1 (ru) * 2019-05-22 2021-09-29 Российская Федерация, от имени которой выступает Государственная корпорация по космической деятельности "РОСКОСМОС" Устройство для гибки труб

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986381A (en) * 1975-05-05 1976-10-19 Vladimir Nikolaevich Shubin Bending head for a tube bending machine
JPS56102319A (en) * 1980-01-21 1981-08-15 Inoue Mtp Co Ltd Method and apparatus for bending long sized material
JPS6182932A (ja) * 1984-09-28 1986-04-26 Hashimoto Forming Co Ltd 長尺部材の連続軸線曲げ加工装置
DE19717232A1 (de) * 1997-04-24 1998-10-29 Suban Ag Verfahren und Vorrichtung zum dreidimensionalen Biegen von Metall-Hohlprofilen

Also Published As

Publication number Publication date
NL1010174C1 (nl) 2000-03-27
EP1115516A1 (de) 2001-07-18
WO2000016921A1 (en) 2000-03-30
DE69903574T2 (de) 2003-07-31
DE69903574D1 (de) 2002-11-21

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