EP2289643B1 - Dispositif pour le pliage de longues pièces usinées - Google Patents

Dispositif pour le pliage de longues pièces usinées Download PDF

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Publication number
EP2289643B1
EP2289643B1 EP20100008714 EP10008714A EP2289643B1 EP 2289643 B1 EP2289643 B1 EP 2289643B1 EP 20100008714 EP20100008714 EP 20100008714 EP 10008714 A EP10008714 A EP 10008714A EP 2289643 B1 EP2289643 B1 EP 2289643B1
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EP
European Patent Office
Prior art keywords
bending
drive
rotation
axis
linear
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
EP20100008714
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German (de)
English (en)
Other versions
EP2289643A2 (fr
EP2289643A3 (fr
Inventor
Dirk BÖRGER
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.)
Tracto Technik GmbH and Co KG
Original Assignee
Tracto Technik GmbH and Co KG
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.)
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Publication date
Application filed by Tracto Technik GmbH and Co KG filed Critical Tracto Technik GmbH and Co KG
Publication of EP2289643A2 publication Critical patent/EP2289643A2/fr
Publication of EP2289643A3 publication Critical patent/EP2289643A3/fr
Application granted granted Critical
Publication of EP2289643B1 publication Critical patent/EP2289643B1/fr
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
    • 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
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment
    • B21D7/024—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment by a swinging forming member

Definitions

  • the invention relates to a device for bending elongate workpieces, such as pipes, extruded profiles or metal wire.
  • Tube bending machines are known for different applications.
  • different bending methods can be used.
  • press bending the bending tool is pressed manually or hydraulically against two counter rollers. This movement forces the workpiece positioned between the bending tool and the counter-roller (s) to bend about the bending tool. Since the pipes can not be supported from the inside, this method is usually suitable only for thick-walled pipes and large bending radii.
  • Three-roll bending is used to make workpieces with large bending radii. The process is similar to press bending, but the work rolls rotate as well as the two stationary counter rolls and thereby form the bend radius.
  • compression bending the tube is clamped between a sliding carriage and a stationary bending roller.
  • the workpiece is in this case fixed between a stationary bending roller and a clamping arm arranged on a pivoting arm and converted by pivoting the pivoting arm including the clamping piece about the axis of rotation of the bending roller.
  • tube bending it is increasingly important to develop tube bending machines that allow bending successive sections of the tube to be deformed in different ways. For example, it may be provided that a first pipe section with a first bending radius and a first rotation angle is to be bent, while a subsequent pipe section with a second bending radius is to be bent by a second rotation angle. Furthermore, it may be necessary to bend a first tube section to the right “and the tube section following to” to the left. "One possibility for this is to rotate the tube by 180 ° itself after a first bending operation, relative to the bending tool However, this can lead to space problems, since on both sides of the tube bending machine considerable space must be created, in which the already bent part of the tube can extend.
  • the EP 0 200 979 A2 discloses a tube bending machine in which clamping bodies are arranged and moved on the bending template and on the clamping jaw in such a way that a quick change is possible.
  • the jaws are rotatable about a horizontal axis.
  • an outgoing boom is present, on which a fastening element of the clamping body is arranged, which has differently formed clamping surfaces in two different heights.
  • the jaw body is additionally rotatable about a horizontal axis via a hydraulic motor provided with a cantilever articulated to a rod fixed to the axis of the jaw.
  • the hydro-engine is used. The displacement of the altitude of the clamp body via independent of the hydro-engine cylinder, which are actuated by the hydraulic drive.
  • Tube bending machines are therefore known which make it possible to bend a tube with different bending radii as well as to the right and to the left without the tube in this case having to be rotated by 180 ° relative to the bending tool.
  • This pipe bending machine comprises a base frame, on which the unbent portion of a pipe to be bent is fixed. The fixation is such that the tube can be advanced by means of a carriage and rotated by a rotating device about a defined angle about the longitudinal axis of the unbent portion of the tube.
  • the pipe bending machine further comprises a tool carrier with a plurality of bending tools.
  • the tool carrier is via a carrier carriage with connected to the base support, wherein the base support allows a horizontal displacement of the tool carrier relative to the pipe to be bent and thus perpendicular to the longitudinal axis of the unbent portion of the tube.
  • the tool carrier itself is rotatably connected about an axis which is aligned parallel to the longitudinal axis of the unbent portion of the tube, with the support carriage, wherein rotation takes place, if necessary, by means of an electric motor.
  • the bending tools comprise two bending roller units each having two bending rollers of different diameters, wherein the two bending roller units are fixed on opposite sides with respect to the axis of rotation of the tool carrier on a common axis.
  • a major disadvantage with the in the EP 1 226 887 B1 disclosed pipe bending machine is that two separate drives must be provided; one with which the carrier carriage can be moved horizontally linear and another, which can cause the rotation of the tool carrier about the axis of rotation.
  • the present invention seeks to provide an improved device for bending elongated workpieces, in particular with respect to the EP 1 226 887 B1 known pipe bending machine is structurally less expensive.
  • the essence of the invention is to use the drive, which is provided for a relative displacement of the tool carrier to the base support, to cause - at least temporarily - at the same time a rotational movement of the tool carrier about an axis of rotation.
  • An inventive device for bending elongated workpieces has the features of claim 1.
  • linear drive a unit that causes a controlled translation of the tool carrier relative to the base support.
  • the translation may preferably be rectilinear here, but this is not absolutely necessary.
  • a linear drive preferably comprises a linear guide, which connects the tool carrier and the base support with each other in such a way that movement is possible only in the opposite directions defined by the linear guide, and corresponding drive means for carrying out the movement.
  • the transmission is designed such that it has a drive wheel which is connected - directly or indirectly - with a shaft of the tool carrier defining the axis of rotation.
  • the rotational movement of the tool carrier can then be generated by the fact that the drive wheel rolls on a corresponding contact surface during a displacement of the tool carrier by the linear drive.
  • the desired, coupled with the linear motion rotational movement of the tool carrier can be achieved by means of a structurally very simple design gear.
  • the drive wheel may be formed as a gear wheel, which rolls on a rack.
  • a particularly accurate coupling of the rotational movement of the tool carrier to the relative movement of the tool carrier can be effected.
  • a second linear guide over which the tool carrier is displaceable relative to the base support to provide wherein the second linear drive is not aligned parallel to the first linear drive.
  • the second linear drive in conjunction with the first linear drive allows any (two-dimensional) displaceability of the tool carrier in a plane relative to the base support. This not only allows easy positioning of the respective bending tools on the pipe to be bent, but also the arrangement of several bending rollers of different diameters on one side with respect to the axis of rotation of the tool carrier, wherein the positioning of the respective bending roller for contact with the bending tool only due to Displacement of the tool carrier can be done based on the linear drives.
  • a coupling function can be generated, wherein in a first, within the displacement of the second linear drive position, the drive wheel rolls on the contact surface, whereby according to the invention the displacement of the tool carrier means of the linear drive to a simultaneous rotation of the tool carrier leads around the axis of rotation, and in at least one second position, the drive wheel no longer rolls on the contact surface, whereby the coupling of the rotation of the tool carrier to the translation of the first linear drive is canceled.
  • the linear guides of the first and the second linear drive can be aligned perpendicular to each other, so that a defined range of motion can be achieved with the shortest possible displacement of the linear drives.
  • the linear guides of the first and the second linear drive define a displacement plane of the tool carrier, which is aligned perpendicular to the longitudinal axis of the held on the base support (unbent) portion of the workpiece to be bent. This simplifies the exact positioning of the bending tools on the section of the workpiece to be bent.
  • the same purpose is served by the further preferably provided alignment of the axis of rotation of the tool carrier parallel to the longitudinal axis of the held on the base portion of the workpiece.
  • the bending device shown in the figures comprises a base support 1, which is shown schematically in the figures in the form of a cuboid.
  • a drive unit 2 is provided, in which a tube 3 to be bent is fixed.
  • the drive unit 2 comprises an electric motor (not shown) with which the tube 3 to be bent can be rotated about the longitudinal axis of the unbent portion of the tube.
  • the drive unit also comprises a linear drive (not shown), which makes it possible to move it, including the tube 3 to be bent in the direction of the longitudinal axis of the non-bent portion of the tube 3 relative to the base support 1.
  • a tool carrier 4 of the bending device comprises a main body 5, a vertically oriented bending tool axis 6 and a pivot arm 7, which can be pivoted relative to the main body 5 about the bending tool axis 6.
  • a bending roller unit 8 of a bending tool is arranged, each having three sections of different diameters, which serve as a bending template and define the bending radius of the respective bending operation.
  • Each of the bending tools further comprises a clamping jaw 9, which is arranged displaceably on the pivot arm 7 and in a position in which it rests against the respective bending roller unit 8, the tube located therebetween 3 clamped with a defined clamping force.
  • the tool carrier 4 is fixed via a displacement unit 10 on a side surface of the base support 1.
  • the displacement unit 10 comprises two linear drives 11a, 11b, each consisting of a carriage 12a, 12b, two linear guides 13a, 13b and a drive, not shown (eg hydraulic or pneumatic cylinder, electric motor spindle drive, rack and pinion linear drive, etc.).
  • the two parallel rail systems comprehensive linear guides 13a, 13b of the linear actuators 11a, 11b are aligned at an angle of 90 ° to each other, wherein the linear guide 13a of the first linear actuator 11a horizontally and the linear guide 13b of the second linear actuator 11b is vertically aligned.
  • the tool carrier 4 including the associated bending tools in a plane which is aligned perpendicular to the longitudinal axis of the unbent portion of the tube 3, are continuously displaced.
  • the displacement of the tool carrier 4 relative to the base support 1 or to the fixed to the base support 1 tube 3 is allowed to position the bending tool located in the operating position so that the section to be bent of the tube 3 in the desired bending radius corresponding Bending template of the respective bending roller unit 8 is located.
  • the Fig. 1 shows how the section of the tube 3 to be bent between the bending radius of the smallest bending radius forming the located in the operating position bending roller unit 8 and the clamping jaw 9 of this bending tool is fixed.
  • the Fig. 3 to 6 show the process of rotating the tool carrier 4 about its axis of rotation.
  • the rotation of the tool carrier 4 is achieved about the axis of rotation by means of a transmission comprising a gear 14 which rolls on a connected to the base support 1 rack 15.
  • the gearwheel 14 is non-rotatably connected to the main body 5 of the tool carrier 4 via a hollow shaft 16, wherein the hollow shaft 16 extends through a slot in the carriage 12b of the second linear drive 11b and rotatable in a bearing 17 connected to the carriage 12a of the first linear drive 11a is stored.
  • the hollow shaft 16 thus defines the axis of rotation of the tool carrier 4.
  • the second bending tool now in the operating position must still be positioned so that the section of the tube 3 to be bent is positioned in the bending template of the bending roller unit 8 provided for the following bending operation.
  • the tool carrier 4 is initially moved by means of the second linear drive 11b a small amount upwards, whereby it is achieved that the gear 14 no longer meshes with the rack 15.
  • a subsequent displacement of the tool carrier 4 in the horizontal direction to the right by means of the first linear drive 11a consequently no longer leads to a rotation of the tool carrier 4.
  • Fig. 6 shows the achievement of this second operating position already in the Fig. 2 is presented from a different perspective.

Claims (9)

  1. Dispositif dévolu au cintrage de pièces longilignes à usiner, comprenant un support de base (1), un porte-outils (4) muni d'au moins deux outils de cintrage, et un entraînement en rotation destiné à faire tourner ledit porte-outils (4) autour de l'axe de rotation, ledit support de base (1) et ledit porte-outils (4) étant conçus pour effectuer mutuellement un coulissement relatif le long d'au moins un axe, au moyen d'un entraînement, et l'un considéré desdits outils de cintrage pouvant être mis en prise avec la pièce à cintrer suite à une rotation dudit porte-outils (4) autour d'un axe de rotation, caractérisé par une transmission sous l'action de laquelle le coulissement relatif pouvant être exécuté par l'entraînement et accompli par le porte-outils (4) vis-à-vis du support de base (1) est converti, pour l'entraînement en rotation, en le mouvement rotatoire dudit porte-outils (4) autour de l'axe de rotation.
  2. Dispositif conforme à la revendication 1, caractérisé par le fait que l'entraînement, affecté au coulissement relatif, inclut au moins un entraînement linéaire (11 a) par l'intermédiaire duquel le porte-outils (4) peut coulisser vis-à-vis du support de base (1).
  3. Dispositif conforme à la revendication 2, caractérisé par le fait que la transmission présente une roue d'entraînement qui est reliée à un arbre du porte-outils (4) définissant l'axe de rotation, et qui roule sur une surface de contact lors d'un coulissement dudit porte-outils (4) sous l'action de l'entraînement linéaire (11 a).
  4. Dispositif conforme à la revendication 3, caractérisé par une roue dentée (14) roulant sur une crémaillère (15).
  5. Dispositif conforme à l'une des revendications 2 à 4, caractérisé par un second entraînement linéaire (11b) par l'intermédiaire duquel le porte-outils (4) peut coulisser vis-à-vis du support de base (1), un guide linéaire (13b) dudit second entraînement linéaire (11b) étant orienté de manière non parallèle à un guide linéaire (13a) du premier entraînement linéaire (11a).
  6. Dispositif conforme aux revendications 5 et 3, caractérisé par le fait que la roue d'entraînement peut être amenée au contact de la surface de contact par un coulissement du porte-outils (4), vis-à-vis du support de base (1), le long du second guide linéaire (13b).
  7. Dispositif conforme à l'une des revendications 5 ou 6, caractérisé par le fait que les premier (13a) et second (13b) guides linéaires sont orientés perpendiculairement l'un à l'autre.
  8. Dispositif conforme à l'une des revendications 5 à 7, caractérisé par le fait que les premier (13a) et second (13b) guides linéaires définissent un plan de translation du porte-outils (4) qui est orienté perpendiculairement à l'axe longitudinal d'un tronçon de la pièce à cintrer, retenu sur le support de base (1).
  9. Dispositif conforme à l'une des revendications précédentes, caractérisé par le fait que l'axe de rotation est orienté parallèlement à l'axe longitudinal d'un tronçon de la pièce à cintrer, retenu sur le support de base (1).
EP20100008714 2009-08-24 2010-08-20 Dispositif pour le pliage de longues pièces usinées Not-in-force EP2289643B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009038384A DE102009038384A1 (de) 2009-08-24 2009-08-24 Vorrichtung zum Biegen länglicher Werkstücke

Publications (3)

Publication Number Publication Date
EP2289643A2 EP2289643A2 (fr) 2011-03-02
EP2289643A3 EP2289643A3 (fr) 2011-10-05
EP2289643B1 true EP2289643B1 (fr) 2013-11-06

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Family Applications (1)

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EP20100008714 Not-in-force EP2289643B1 (fr) 2009-08-24 2010-08-20 Dispositif pour le pliage de longues pièces usinées

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EP (1) EP2289643B1 (fr)
DE (1) DE102009038384A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104607508A (zh) * 2014-12-05 2015-05-13 芜湖恒美电热器具有限公司 一种空调加热管弯管机

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012004984B4 (de) 2012-03-14 2015-11-12 HAAS Holzzerkleinerungs- und Fördertechnik GmbH Vorrichtung zum Zerkleinern von Stückgut
DE102013200851B4 (de) * 2013-01-21 2018-05-30 Wafios Aktiengesellschaft Biegevorrichtung für strangförmige Werkstücke
CN103394607B (zh) * 2013-06-28 2015-06-10 雄华机械(苏州)有限公司 一种弯管成型检测一体机
DE102016116159B4 (de) 2016-08-30 2018-08-09 Dengler Tubetec Gmbh Verfahren und Vorrichtung zum Biegen von strangförmigen Werkstücken
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
CN106623538A (zh) * 2016-12-28 2017-05-10 武汉思瑞法机器人制造有限公司 一种用于弯管机的弯管装置
CN106623548B (zh) * 2016-12-30 2018-11-30 武汉思瑞法机器人制造有限公司 一种用于弯管机的左右快速换向弯管装置
CN110947807A (zh) * 2019-12-19 2020-04-03 马鞍山市兴隆铸造有限公司 一种方便使用的弯管加工装置

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DE2746721C3 (de) * 1977-10-18 1981-03-19 Schwarze, Rigobert, Dipl.-Ing., 5000 Köln Rohrbiegemaschine
DE3516923A1 (de) * 1985-05-10 1986-11-13 Rigobert Dipl.-Ing. 5000 Köln Schwarze Rohrbiegemaschine
US4843859A (en) * 1987-07-14 1989-07-04 Chiyoda Kogyo Co., Ltd. Pipe bender
CH683598A5 (de) * 1990-03-13 1994-04-15 Mewag Maschinenfabrik Ag Rohrbiegemaschine.
IT1290141B1 (it) * 1997-03-21 1998-10-19 Blm Spa Macchina per curvare materiale filiforme come tubi barre o profilati
DE50100461D1 (de) 2001-01-30 2003-09-11 Blm Spa Maschine zum Biegen von strangförmigem Material, wie Rohren, Stangen, Profilen oder Metalldraht
DE50205694D1 (de) * 2002-10-02 2006-04-13 Trumpf Rohrtechnik Gmbh & Co K Biegemaschine mit drehbarer Werkzeugeinheit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104607508A (zh) * 2014-12-05 2015-05-13 芜湖恒美电热器具有限公司 一种空调加热管弯管机

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Publication number Publication date
EP2289643A2 (fr) 2011-03-02
DE102009038384A1 (de) 2011-03-03
EP2289643A3 (fr) 2011-10-05

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