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EP2828015B1 - Biegemaschine mit einem über einen stationären biegbaren schaft beweglichen biegekopf - Google Patents

Biegemaschine mit einem über einen stationären biegbaren schaft beweglichen biegekopf Download PDF

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Publication number
EP2828015B1
EP2828015B1 EP13715310.2A EP13715310A EP2828015B1 EP 2828015 B1 EP2828015 B1 EP 2828015B1 EP 13715310 A EP13715310 A EP 13715310A EP 2828015 B1 EP2828015 B1 EP 2828015B1
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EP
European Patent Office
Prior art keywords
axis
bending
folding
head
roller
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.)
Active
Application number
EP13715310.2A
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English (en)
French (fr)
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EP2828015A1 (de
Inventor
Julien COSTET
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.)
Numalliance SAS
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Numalliance SAS
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Publication of EP2828015A1 publication Critical patent/EP2828015A1/de
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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
    • B21D7/04—Bending rods, profiles, or tubes over a movably-arranged forming menber
    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
    • B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete

Definitions

  • Such a machine is particularly known from the document FR 2,806,943 which describes a machine in which the folding head is movable in translation along an axis perpendicular to the axis of travel of the bar, the folding nose carried by the arm is movable in translation along the axis of movement relative to at the frame and therefore with respect to the folding head.
  • This machine allows a large number of shapes, including loops, and shapes of various diameters.
  • the rigidity of the bending nose is altered by the fact that the nose is carried by a movable support and the mechanical play inherent in guiding the telescopic nose.
  • the disposition of the movable nose imposes, in the majority of the folding sequences using this disposition, to move the bar in the same proportion as the nose. It follows additional reciprocating movements to those necessitated solely by folding, and therefore a loss of precision in the axial positioning of the bar.
  • the axial displacement nose requires the use of a telescopic bar-guide tube having limited guiding qualities.
  • the folding head is driven in motion by the combination of two connecting rods whose foot is driven in translation along an axis parallel to the axis of travel of the wire.
  • An appropriate control of the drive means in translation of the foot of the connecting rods allows the folding finger to move relative to the frame and the folding nose, in translation along the axis of travel (for example horizontal) and / or in translation. along an axis (eg vertical) perpendicular to the scroll axis as will be seen later. It is thus possible to produce at least the same shapes as with a machine according to the prior art described above.
  • an appropriate control of the drive means in translation of the foot of the connecting rods also allows movements of the folding finger along other paths in a fold plane passing through the axis of movement so that it is possible to perform a many forms.
  • the folding nose can be fixed relative to the arm, since the translational movement of the folding nose with respect to the folding head can be achieved by appropriate control of the translation drive means. from the foot of the connecting rods. As the displacement of the folding head is faster than a displacement of the bending nose, the speed of execution of the bends is greater. In addition, in a machine according to the invention, the mechanical clearances in particular at the level of the fixed bending nose are limited. The quality of the parts produced is thus improved.
  • the translational control of the feet of the two connecting rods is sufficient to drive the folding head (the connecting rods, the folding finger) moving. Specific control of the lateral movement of the folding head is not necessary.
  • the arm can be rotatably mounted relative to the frame along the axis of scrolling. This allows, before making a folding, to orient the nose of folding relative to the folding head.
  • the folding head may also comprise a bending roller rotatably mounted relative to its axis (ie along an axis of the roller) parallel to the axis of folding.
  • the roller makes it possible to produce specific shapes, in particular loops and bends beyond 180 °.
  • the folding finger can also be freely rotatable along its axis (ie along an axis of the folding finger) parallel to the axis of folding, which considerably limits the frictional forces of the folding finger on the bar to be folded.
  • the folding finger, and the roller if there is one are fixed on the folding head, for example on the first connecting rod, rotatable relative to the folding head.
  • the folding head comprises a tool removably mounted on the folding head; the tool comprises a support piece on which the folding finger (and the roller if there is one) is mounted; the folding head comprises means for rotating the support piece of the tool along the axis of folding.
  • the folding finger, and the roller if there is one, are mounted on a support piece, the support piece assembly, folding finger and roller forming a tool; the tool being removably mounted on the folding head, it is thus very easy to change to make folds of different shapes and / or diameters, while maintaining the same drive means of the folding head in motion.
  • the lug of the tool and the jaw of the folding head together form a removable attachment means of the tool on the folding head.
  • the axis of the jaw, the axis of the lug and the axis of folding are merged.
  • the jaw is for example fixed on the head of the first rod.
  • the axis of the folding finger or the axis of the bending roller may be confused with the bending axis for specific bends.
  • the lateral outer surface of the bending finger and / or the bending roller may have a surface of revolution about the axis of the bending pin or the axis of the roller.
  • bending for example a cylindrical surface, or a surface portion of tube closed on itself (cut tube shape closed on itself, a form of revolution obtained from an arc).
  • Such a surface is well adapted to allow the rotation of the folding finger or the roller on itself as the folding finger or the roller moves along the bar to be bent, which limits the friction forces .
  • Such a surface is well adapted to marry the best forms of a bar to fold and allows the realization of folds without sliding of the folding finger or the bending roller on the bar to bend.
  • bar has been used to designate more generally a raw part that can be a bar, a wire, a tube or a profile before bending.
  • upstream and downstream are defined in the usual way, along the bar to be folded and in the direction of scrolling of the bar.
  • the folding head further comprises a first drive means 30 for driving in translation a foot 82 of the first connecting rod along an axis parallel to the running axis, and a second driving means 40 for translational driving a foot 92 the second connecting rod 90 along an axis parallel to the axis of travel.
  • the foot 82 of the first link 80 is free to rotate with respect to the drive means 30 and can thus freely rotate along an axis parallel to the axis of folding.
  • the foot 92 of the second link is free to rotate relative to the drive means 40 and can thus freely rotate along an axis parallel to the fold axis.
  • the tool 70 comprises a support piece 71 comprising a fixing lug 74 extending from a first face of the support piece 71 of the tool.
  • the axis of folding P is the axis of the folding head around which the folding finger can be rotated.
  • Different tools make it possible to make different bends or bends on bars of different diameter and shape, depending in particular on the shape and diameter of the folding finger, the presence or absence of a roller, the shape and the diameter of the roller, the position of the axis of the folding finger and / or the axis of the roller with respect to the axis of folding, etc.
  • a tool mounted on the folding head can easily be replaced by another.
  • the folding finger 72 extends from a second face of the support piece and is mounted in free rotation relative to the axis D of the folding finger, parallel to the axis P of folding.
  • the tool also comprises a bending roller extending parallel to the folding finger, from the second face of the support member along an axis G of the roller coincides with the axis P of folding.
  • the roller is here mounted in free rotation on its axis.
  • the tool also comprises a bending roller 73 extending parallel to the folding finger 72, from the second face of the support piece along an axis G of the roller parallel to the folding axis P.
  • the roller is here mounted in free rotation on its axis.
  • the axis of the roller G is coincident with the axis P of folding and the axis D of the folding finger is offset with respect to the axis P of folding.
  • the axis of the roller and the axis of the folding finger are offset with respect to the axis of folding.
  • the lateral outer surface of the folding finger is a surface of revolution about the axis of the folding finger, more precisely a hollow surface forming a groove in which can be positioned a cylindrical bar to bend.
  • the bar is thus perfectly maintained laterally and can not move in translation along the axis of folding.
  • the outer surface of the folding finger is locally concave cylindrical, along an axis perpendicular to the axis of the folding finger or the axis of the bending roller, a diameter of the cylinder corresponding to the diameter of a bar to bend. It is thus perfectly adapted to rest on the surface of a tube for making a fold without sliding.
  • the drive means in rotation of the finger with respect to the axis of folding and the drive means in translation of the ends 82, 92 of the connecting rods are controlled by digital control means, in other words by a control software. user-configurable control depending on the bends to be made.
  • the bending axis of the machine is a horizontal axis, perpendicular to the longitudinal axis of the bar to bend.
  • the drive means in translation of the ends 82, 92 of the connecting rods allow to accurately position the point intersection of the bending axis of the machine in the vertical plane passing through the longitudinal axis of the bar to bend. Then, the rotation of the folding finger along the axis of folding, possibly in combination with a simultaneous movement of the folding axis, allows the desired folding, as will be seen in the examples below.
  • the Figures 3a, 3b show the kinematics of a folding of a cylindrical bar on the folding nose.
  • the tool used comprises only a folding finger, the axis of which is offset with respect to the axis of folding.
  • the bar is fed through the bend nose, and is immobilized in the bend nose.
  • the folding finger 72 In initial position ( Fig. 3a ), the folding finger 72 is positioned under the bar, in contact with the bar.
  • the folding axis perpendicular to the axis of the bar, and passes through the axis of the bar.
  • the finger is rotated along the axis of folding, to its final position ( Fig. 3b ).
  • the shape of the fold is here given by the shape of the folding nose.
  • the Figures 4a, 4b show the kinematics of realization of a fold on the axis of folding.
  • the tool used comprises a roller whose axis coincides with the axis of folding, and a folding finger whose axis is offset with respect to the axis of folding.
  • the bar is fed through the bending nose, and protrudes downstream of the bending nose by a sufficient length to form the bend without the bending head coming into contact with the bending nose.
  • the folding axis is positioned relative to the bar so that the roller and the folding finger are in contact with the bar to be folded, one being above and the other below the bar.
  • the folding finger is rotated and slides or rolls on the end of the bar that bends, to the final position ( Fig. 4b ).
  • the folding head being sufficiently far away from the folding nose, the folding can go in the example shown until the realization of a closed loop.
  • the Figures 5a to 5c show the kinematics of realization of several successive folds at 90 ° along a cylindrical bar.
  • the tool used is the same as in the example of Figures 4a, 4b .
  • the first fold closest to the bend nose along the bar
  • the roller is positioned inside the second fold
  • the folding finger is positioned outside the second fold, downstream of the roller.
  • the folding axis is first shifted in translation along an axis parallel to the axis of the bar in the folding nose to the position where the folding is to be made ( Fig. 5b ), then the finger is rotated to make the folding ( Fig. 5c ).
  • a flat piece with rectangular section has been made.
  • FIGs 6a, 6b show the kinematics of simultaneous realization of two against-folds, one on the nose of folding, the other around the roller.
  • the tool used is the same as in the example of Figures 4a, 4b .
  • the folding axis and the folding finger are positioned so that the finger and the roller are positioned on either side of the bar to be folded and in contact with the bar.
  • the fold is then made by moving the folding head (and therefore the folding axis) along a curved path to its final position ( Fig. 6b ), the folding finger being held stationary relative to the axis of folding. Note that here only the folding axis is moved during the folding phase. In contrast to the previous examples where only the folding finger was rotated relative to the folding axis during the folding phase, the folding axis (and thus the folding head) remaining stationary.
  • FIGs 7a, 7b show the kinematic realization of a fold without sliding of a cylindrical bar on the bending nose of the machine.
  • the tool used here comprises a folding finger whose axis is offset with respect to the axis of folding.
  • the roller is in this example useless.
  • the folding In initial position ( Fig. 7a ), the folding must is under the bar so that the line perpendicular to the axis of folding and passing through the axis of the finger is perpendicular to the bar to bend.
  • the fold is then made by moving in rotation the folding head and the folding axis, the finger being held stationary with respect to the folding axis ( Fig. 7b ).
  • the fold is here produced without slippage, that is to say that the point of contact between the bar and the straight line perpendicular to the axis of folding and passing through the axis of the finger is the same throughout the folding phase .
  • the folding finger is immobile, and in particular does not rotate on itself, as may be the case in the previous examples.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Claims (10)

  1. Maschine zum Wölben, Umformen, Falten oder Biegen einer Stange (100) entlang einer Biegeachse (P), welche Maschine Folgendes umfasst:
    • einen Arm (10),
    • eine von dem Arm getragene Biegenase (20),
    • einen Biegekopf (50), der einen relativ zu der Biegeachse (P) drehbaren Biegefinger (72) umfasst,
    • eine stromaufwärts von der Biegenase (20) befindliche Zufuhrstation zum Bewegen der Stange (100) entlang einer Laufachse (B) und durch die Biegenase (20),
    welche Maschine dadurch gekennzeichnet ist, dass der Biegekopf auch Folgendes umfasst:
    • eine erste Verbindungsstange (80), die den Biegefinger (72) trägt,
    • eine zweite Verbindungsstange (90), deren einer Kopf (91) mit einem Kopf (81) der ersten Verbindungsstange (80) drehbar relativ zu einer Gelenkachse (A) senkrecht zur Laufachse (B) gekoppelt ist,
    • ein erstes Antriebsmittel (30) für den Antrieb in Translation eines Fußes (82) der ersten Verbindungsstange (80) entlang einer Achse parallel zur Laufachse (B) und ein zweites Antriebsmittel (40) für den Antrieb in Translation eines Fußes (92) der zweiten Verbindungsstange (90) entlang einer Achse parallel zur Laufachse (B).
  2. Maschine nach Anspruch 1, bei der der Arm (10) drehbar entlang der Laufachse (B) relativ zu einem Rahmen der Maschine gelagert ist.
  3. Maschine nach einem der vorhergehenden Ansprüche, bei der der Biegekopf (50) auch eine drehbar relativ zu einer Rollenachse (G) parallel zur Biegeachse (P) gelagerte Biegerolle (73) umfasst.
  4. Maschine nach einem der vorhergehenden Ansprüche, bei der der Biegefinger (72) frei drehbar entlang einer Achse des Biegefingers (D) parallel zur Biegeachse (P) ist.
  5. Maschine nach einem der vorhergehenden Ansprüche, bei der der Biegekopf (50) ebenfalls ein Werkzeug (70) umfasst, das abnehmbar an dem Biegekopf gelagert ist, wobei das Werkzeug ein Halteteil (71) umfasst, auf dem der Biegefinger (72) gelagert ist, wobei der Biegekopf (50) ein Mittel umfasst, um das Halteteil des Werkzeugs drehbar entlang der Biegeachse (P) anzutreiben.
  6. Maschine nach Anspruch 5 in Kombination mit Anspruch 3, bei der die Biegerolle (73) an dem Halteteil (71) des Werkzeugs (70) gelagert ist.
  7. Maschine nach einem der Ansprüche 5 bis 6, bei der das Werkzeug (70) eine Befestigungsnase (74) umfasst, die sich ab einer ersten Fläche des Halteteils des Werkzeugs erstreckt, wobei sich der Biegefinger (72) und gegebenenfalls die Rolle (73) ab einer zweiten Fläche des Halteteils des Werkzeugs erstrecken, und wobei der Biegekopf (50) Folgendes umfasst:
    • eine Backe (60), die angepasst ist, um die Befestigungsnase aufzunehmen und um die Befestigungsnase zu immobilisieren, und
    • ein Mittel, um die Backe (60) und das Werkzeug drehbar entlang einer die Biegeachse (P) bildenden Achse der Backe anzutreiben.
  8. Maschine nach einem der vorhergehenden Ansprüche, bei der die Achse des Biegefingers (D) oder die Achse der Biegerolle (G) mit der Biegeachse (P) zusammenfällt.
  9. Maschine nach einem der vorhergehenden Ansprüche, bei der die seitliche Außenfläche des Biegefingers (72) und/oder der Biegerolle (73) eine Rotationsfläche um die Achse des Biegefingers (D) oder die Achse der Biegerolle (G) ist.
  10. Maschine nach einem der vorhergehenden Ansprüche, wobei die Außenfläche des Biegefingers (72) lokal:
    • planar in einer Ebene parallel zu der Achse des Biegefingers (D) oder der Achse der Biegerolle (G), oder
    • konkav zylindrisch entlang einer Achse senkrecht zu der Achse des Biegefingers (D) oder der Achse der Biegerolle (G) ist, wobei ein Durchmesser des Zylinders dem Durchmesser einer zu biegenden Stange (100) entspricht.
EP13715310.2A 2012-03-24 2013-03-13 Biegemaschine mit einem über einen stationären biegbaren schaft beweglichen biegekopf Active EP2828015B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1200880A FR2988309B1 (fr) 2012-03-24 2012-03-24 Machine de cintrage a tete de pliage mobile autour d'un nez de pliage fixe
PCT/FR2013/050522 WO2013144477A1 (fr) 2012-03-24 2013-03-13 Machine de cintrage à tête de pliage mobile autour d'un nez de pliage fixe

Publications (2)

Publication Number Publication Date
EP2828015A1 EP2828015A1 (de) 2015-01-28
EP2828015B1 true EP2828015B1 (de) 2016-01-20

Family

ID=48083489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13715310.2A Active EP2828015B1 (de) 2012-03-24 2013-03-13 Biegemaschine mit einem über einen stationären biegbaren schaft beweglichen biegekopf

Country Status (6)

Country Link
US (1) US20150040634A1 (de)
EP (1) EP2828015B1 (de)
BR (1) BR112014023548B1 (de)
CA (1) CA2867641C (de)
FR (1) FR2988309B1 (de)
WO (1) WO2013144477A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT516371B1 (de) * 2014-12-02 2016-05-15 Stonawski Rudolf Einrichtung zum Biegen eines Profil-Werkstücks
CN104889212B (zh) * 2015-06-11 2017-01-18 张家港江苏科技大学产业技术研究院 一种双向弯管用轮模装置
DE102016105935B4 (de) 2016-03-31 2018-04-26 Wafios Aktiengesellschaft Windewerkzeug für eine Federwindemaschine
IT201600119591A1 (it) * 2016-11-25 2018-05-25 Crippa Spa Macchina per curvare materiale filiforme quale un tubo con un sistema di caricamento contemporaneo del tubo da curvare e scarico del tubo curvato
IT202100022250A1 (it) * 2021-08-24 2023-02-24 Simat S R L Macchina e procedimento per la piegatura di un prodotto oblungo
IT202100031601A1 (it) * 2021-12-16 2023-06-16 Schnell Spa Apparecchiatura e metodo per la piegatura di barre
DE102023211926A1 (de) * 2023-11-29 2025-06-05 Zf Friedrichshafen Ag Biegevorrichtung für ein langgestrecktes Werkstück

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
US2908317A (en) * 1958-06-18 1959-10-13 Alexander G Sadler Offset bender
USRE27021E (en) * 1969-07-24 1971-01-05 Wire-bending apparatus
US3680347A (en) * 1971-01-13 1972-08-01 Schenck Corp Bending machine
SU466698A1 (ru) * 1972-11-30 1976-08-05 Предприятие П/Я В-2190 Консольна гибочна головка трубогибочного станка
US3952572A (en) * 1974-01-23 1976-04-27 Case Western Reserve University Beam bender
US3986381A (en) * 1975-05-05 1976-10-19 Vladimir Nikolaevich Shubin Bending head for a tube bending machine
FR2715334B1 (fr) * 1994-01-21 1996-03-08 Automatisation Ste Francaise Machine pour cintrer un matériau se présentant sous une forme sensiblement rectiligne.
CA2221324A1 (en) * 1997-11-17 1999-05-17 Eagle Precision Technologies Inc. Tub bending apparatus and method
FR2806943B1 (fr) * 2000-04-03 2002-08-16 Macsoft Machine de cintrage de barres a nez de pliage effacable
IT1320240B1 (it) * 2000-07-14 2003-11-26 Tauring S P A Macchina curvatrice di profilati.
JP4081593B2 (ja) * 2001-05-18 2008-04-30 健 一柳 長尺材の曲げ加工装置
US8631674B2 (en) * 2008-12-17 2014-01-21 Aim, Inc. Devices, systems and methods for automated wire bending

Also Published As

Publication number Publication date
CA2867641C (fr) 2019-05-14
FR2988309B1 (fr) 2015-06-05
CA2867641A1 (fr) 2013-10-03
BR112014023548B1 (pt) 2020-07-21
US20150040634A1 (en) 2015-02-12
EP2828015A1 (de) 2015-01-28
FR2988309A1 (fr) 2013-09-27
WO2013144477A1 (fr) 2013-10-03

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