EP1405680B1 - Machine à cintrer avec une tête à cintrer rotative - Google Patents

Machine à cintrer avec une tête à cintrer rotative Download PDF

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Publication number
EP1405680B1
EP1405680B1 EP20020022075 EP02022075A EP1405680B1 EP 1405680 B1 EP1405680 B1 EP 1405680B1 EP 20020022075 EP20020022075 EP 20020022075 EP 02022075 A EP02022075 A EP 02022075A EP 1405680 B1 EP1405680 B1 EP 1405680B1
Authority
EP
European Patent Office
Prior art keywords
tool
driving motor
bending
bending machine
conductor
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
EP20020022075
Other languages
German (de)
English (en)
Other versions
EP1405680A1 (fr
Inventor
Frank Schmauder
Jürgen Wolf
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.)
Trumpf Rohrtechnik GmbH and Co KG
Original Assignee
Trumpf Rohrtechnik 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.)
Filing date
Publication date
Application filed by Trumpf Rohrtechnik GmbH and Co KG filed Critical Trumpf Rohrtechnik GmbH and Co KG
Priority to EP20020022075 priority Critical patent/EP1405680B1/fr
Priority to DE50205694T priority patent/DE50205694D1/de
Publication of EP1405680A1 publication Critical patent/EP1405680A1/fr
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Publication of EP1405680B1 publication Critical patent/EP1405680B1/fr
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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 bending machine for bending rod and / or rod-like workpieces, in particular of tubes, with a frame and with a tool unit having at least one bending tool, which is mounted on the side remote from the frame side of a support arm, wherein the support arm parallel extends to the longitudinal direction of the workpieces to be machined between the frame and the tool unit, wherein at least one tool drive motor for actuating a bending tool provided and the tool unit by means of at least one rotary drive motor about a parallel to the longitudinal direction of the machined Workpieces extending axis of rotation relative to the frame is rotatable (see, for example, EP-A-1 226 887).
  • Such a pipe bending machine is also disclosed in DE 40 10 445 A1.
  • the previously known machine comprises a tool unit, which is connected via a support arm in the form of a bending table with a frame.
  • the tool unit is jointly rotatable with the bending table about an axis of rotation parallel to the axis of the tubes to be machined.
  • rotation of the assembly of bending table and tool unit can be converted into its functional position depending on the processing to be performed by one of two provided on opposite sides of the tool unit bending tools. This allows either right or left bends and bends with different bending radii produce.
  • the rotary drive motor for rotating bending table and tool unit is housed in the frame of the prior art machine, a tool drive motor for actuating the bending tools of the tool unit in the bending table.
  • the connection between the rotary drive motor or the tool drive motor and the one or more machine parts to be driven in each case is produced by means of conventional gear elements.
  • the present invention has set itself the goal.
  • this object is achieved by the bending machine according to claim 1. Accordingly, at least one rotary drive motor of the tool unit and at least one tool drive motor for actuating a bending tool in the immediate vicinity of each machine part to be driven are arranged.
  • Support arm and tool unit form with the respective drive motors a self-contained assembly that can be tailored to the particular application requirements, such as changing bending drive performance.
  • the frame of the bending machine according to the invention can also be made small. Functionally, the frame can be consistently limited to its supporting tasks.
  • Claim 2 describes the inventively preferred form of connection of the tool drive motors or with an associated energy source. Accordingly, during the rotation of a tool drive motor, a relative movement results between the motor-side part of at least one power supply line and the line part remote from the tool drive motor. This circumstance is taken into account by appropriate dimensioning of the length of the power supply line between the drive motor side and the line part lying to the energy source. With structurally simple means as a functionally reliable energy coupling is ensured in the relevant tool drive motor regardless of its rotational mobility.
  • the power supply line of the tool drive motor is guided between the lying to the power source line part and its drive motor side. Damage to the cables and associated breakdowns can be effectively avoided.
  • a guide chain is provided according to claim 4 as a line guide.
  • Such guide chains provide for a guided movement of the relevant line section of the power supply line; on the other hand, they protect the guided line section against harmful external influences, in particular damage.
  • the line section between the line part lying to the energy source and the drive motor side of the power supply line , Where appropriate, the wiring, runs on the support arm.
  • the line receptacle provided according to claim 6 on the support arm ensures a defined housing of said line section of the power supply line or the wiring.
  • the line receptacle on the support arm according to the invention is designed such that a secure housing of the wiring or the relevant line section of the power supply line is ensured without the compact design of the overall arrangement would be impaired.
  • the mass to be moved by the rotary drive motor of the tool unit is reduced to a minimum. This allows on the one hand the use of rotary drive motors with relatively low drive power; on the other hand, due to the reduction in mass, a highly accurate positioning of the tool unit is simplified.
  • a bending machine 1 for processing pipes has a frame 2 with a pipe feed 3 and a tool unit 4.
  • a for clarity not shown in Fig. 1 tube 5 is indicated in Fig. 2.
  • the pipe feed 3 comprises a feed carriage 6, which is largely covered in Fig. 1 by a machine cover 7 and provided on its visible front with a collet 8.
  • the feed carriage 6 is on the frame 2 in the longitudinal direction 9 to be processed tubes 5 back and forth movable.
  • the collet 8 is used in the usual way for holding the remote from the tool unit 4 ends of the tubes 5 and is rotatable in the direction of a double arrow 10.
  • the bending tools 11, 12 are conventional Rotationszugbiegewerkmaschinee, each having a bending die, a clamping jaw and a slide rail as tool parts.
  • the bending tool 11 comprises a bending die 13, a clamping jaw 14 and a slide rail 15, the bending tool 12 a bending die 16, a clamping jaw 17 and a slide rail 18.
  • the clamping jaws 14, 17 are displaceable on a bending arm 19 of the tool unit 4 in the direction of a double arrow 20.
  • the slide rails 15, 18 are movable on a guide part 21 of the tool unit 4.
  • the bending dies 13, 16 can be rotated about a common bending axis 22.
  • the bending arm 19 is pivotable about the bending axis 22.
  • the rotational movement of the bending dies 13, 16 and the associated pivotal movement of the bending arm 19 is effected by means of a tool drive motor 23.
  • a tool drive motor 24 for performing the rectified translational movement of the slide rails 15, 18, a tool drive motor 25, which is covered in Fig. 1 by the tool drive motor 24.
  • a tool drive motor for translational movement of the slide rails 15, 18 may be provided in the longitudinal direction 9 of the tubes 5 to be processed. 1, all tool drive motors 23, 24, 25 are integrated into the tool unit 4.
  • the tool unit 4 including the tool drive motors 23, 24, 25 about an axis of rotation 26 in the direction of a double arrow 27 is rotatable.
  • the tool unit 4 is movably mounted on a support arm 28 in the direction of the double arrow 27.
  • a rotary drive motor 29 the tool unit 4 is shown in Fig. 5 housed inside the support arm 28.
  • the geometric axis of its motor shaft coincides with the axis of rotation 26 of the tool unit 4.
  • the rotary drive motor 29 and the tool drive motors 23, 24, 25 are compact electric motors.
  • the support arm 28 is in turn attached to one end of a pivot support 31.
  • the pivot support 31 in turn is rotatably mounted on the frame 2 about a pivot support axis 32. All in all, the tool unit 4 thus has two axes of rotation, namely, on the one hand, the axis of rotation 26 and, on the other, the pivot carrier pivot axis 32.
  • the tube 5 between one of the bending dies 13, 16 and the associated clamping jaw 14, 17 is to be clamped in the usual way first.
  • the relevant clamping jaw 14, 17 is moved by means of the tool drive motor 24 from an inoperative position to the bending die 13, 16 out.
  • the respective slide rail 15, 18 is moved by means of the tool drive motor 25 in a position close to the pipe, when they take it can support the pipe 5 in its transverse direction.
  • the in-service bending die 13, 16 is rotated about the bending axis 22 by means of the tool drive motor 23 and at the same time the bending arm 19 pivoted about the bending axis 22.
  • the tube 5 is bent around the respective bending die 13, 16.
  • the rotational or pivoting mobility of the tool unit 4 with respect to the axis of rotation 26 and the pivot carrier axis of rotation 32 is used to convert the bending tool 11, 12 provided for workpiece machining relative to the tube 5 into the functional position.
  • the kinematics of the tool unit 4 during initial bending of the tube 5 by means of the bending tool 11 and subsequent processing by means of the bending tool 12 is illustrated in FIG. 2. This transition from the bending tool 11 to the bending tool 12 is completed when successive bends are to be made in opposite directions. In the example shown, a change in the bending radius is connected to the change of the bending direction.
  • the bending die 13 of the bending tool 11 forms a larger bending radius than the bending die 16 of the bending tool 12.
  • the bending tool 11 is open.
  • the clamping jaw 14 and the slide rail 15 are moved into a non-functional position away from the pipe.
  • the tool unit 4 is moved to a position while rotating about the rotation axis 26 and pivoting about the pivot support axis 32, in which the bending die 13 of the bending tool 11, the tube 5 releases and the entire tool unit 4 can be rotated or transferred to the transfer of the bending tool 12 in a tubular position (partial views 2 to 4 of Fig. 2).
  • the tool unit 4 is positioned relative to the tube 5 such that the tube 5 comes to rest in the circumferential groove of the bending die 16 of the bending tool 12 (partial views 5 to 7 of FIG. 2). Finally, the bending tool 12 is closed (partial view 8 of Fig. 2) and carried out the next bending operation.
  • the tool drive motors 23, 24, 25 on the tool unit 4 and the rotary drive motor 29 on the support arm 28 are connected during the pivotal movement of the tool unit 4 with its power source.
  • Tragarm detergent 31 terminals are provided on the pivot support, from which lead portions of the power supply lines to the rotary drive motor 29 and the tool drive motors 23, 24, 25.
  • the power supply lines for the tool drive motors 23, 24, 25 extend from the mentioned terminals inside guide chains 34, 35 ( Figures 3 to 5).
  • Such guide chains are described for example in DE 43 02 757 C1 in detail.
  • the guide chains 34, 35 as well as the energy supply lines accommodated in their interior run in the form of loops on the outer wall of a housing 36 formed by the support arm 28 for the rotary drive motor 29.
  • the tubular housing 36 is rigidly connected to the pivot support 31 on the frame side.
  • the housing 36 supports and guides the bearing flange 30, via which the tool unit 4 is rotatably connected to the pivot support 31 about the axis of rotation 26.
  • Rotatable with the bearing flange 30 are terminals 37, 38, with which the power supply lines of the tool drive motors 23, 24, 25 are provided on their drive motor side.
  • the guide chains 34, 35 also accommodate control lines for the tool drive motors 23, 24, 25.
  • control lines are also guided via the pivot carrier side terminals and through the interior of the pivot carrier 31 to the frame 2 of the bending machine 1.
  • the guide chains 34, 35 slide on the housing 36 of the rotary drive motor 29.
  • the pivot axes of their chain links hang the guide chains 34, 35 at most slightly in the direction of gravity.
  • Both the length of the guide chains 34, 35 and the length of the guided in these lines is tuned to the maximum amount of relative rotational movement, which is performed by the tool unit 4 relative to the pivot support 31.
  • a cover panel 39 of the support arm 28 shown in FIG. 5 concentrically encloses the housing 36 of the rotary drive motor 29 and together with the housing 36 defines a cable receptacle 40 with an annular cross-section.

Landscapes

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

Claims (12)

  1. Machine à cintrer pour cintrer des pièces du genre barres et/ou tiges, notamment des tubes (5), avec un bâti (2) ainsi qu'avec une tête à cintrer (4) qui présente au moins un outil de cintrage (11, 12) et qui est montée sur le côté d'un bras porteur (28) qui est éloigné du bâti (2), sachant que le bras porteur (28) s'étend entre le bâti (2) et la tête à cintrer (4) parallèlement à la direction longitudinale (9) des pièces à usiner, sachant qu'au moins un moteur (23, 24, 25) d'entraînement d'outil est prévu pour actionner un outil de cintrage (11, 12) et que la tête à cintrer (4) est, au moyen d'au moins un moteur (29) d'entraînement en rotation, rotative par rapport au bâti (2) autour d'un axe de rotation (26) s'étendant parallèlement à la direction longitudinale (9) des pièces à usiner, caractérisée en ce qu'au moins un moteur (29) d'entraînement en rotation de la tête à cintrer (4) est installé sur le bras porteur (28) et au moins un moteur (23, 24, 25) d'entraînement d'outil sur la tête à cintrer (4), sachant que le ou les moteurs (23, 24, 25) d'entraînement d'outil installés sur la tête à cintrer (4) sont rotatifs avec celle-ci autour de son axe de rotation (26) par rapport au bâti (2).
  2. Machine à cintrer selon la revendication 1, caractérisée en ce que le ou les moteurs rotatifs (23, 24, 25) d'entraînement d'outil sont reliés à une source d'énergie par l'intermédiaire d'au moins une ligne d'alimentation en énergie, qui sur son côté moteur d'entraînement est couplée en déplacement au(x) moteur(s) rotatifs (23, 24, 25) d'entraînement d'outil et se déplace par ce côté moteur d'entraînement, lors de la rotation du ou des moteurs (23, 24, 25) d'entraînement d'outil, par rapport à une partie de ligne située vers la source d'énergie, et en ce que la ligne d'alimentation en énergie présente, entre la partie de ligne située vers la source d'énergie et son côté moteur d'entraînement, une longueur qui est adaptée au montant du mouvement relatif du côté moteur d'entraînement par rapport à la partie de ligne située vers la source d'énergie.
  3. Machine à cintrer selon la revendication 2, caractérisée en ce qu'un guidage de ligne est prévu pour le tronçon de ligne situé entre la partie de ligne située vers la source d'énergie et le côté moteur d'entraînement de la ligne d'alimentation en énergie.
  4. Machine à cintrer selon la revendication 3, caractérisée en ce que le guidage de ligne est réalisé sous forme de chaîne de guidage (34, 35).
  5. Machine à cintrer selon l'une des revendications 2 à 4, caractérisée en ce que le tronçon de ligne situé entre la partie de ligne située vers la source d'énergie et le côté moteur d'entraînement de la ligne d'alimentation en énergie, et le cas échéant aussi le guidage de ligne, s'étend sur le bras porteur (28).
  6. Machine à cintrer selon l'une des revendications 2 à 4, caractérisée en ce que le tronçon de ligne situé entre la partie de ligne située vers la source d'énergie et le côté moteur d'entraînement de la ligne d'alimentation en énergie, et le cas échéant aussi le guidage de ligne, s'étend dans un logement de ligne (40) sur le bras porteur (28).
  7. Machine à cintrer selon l'une des revendications 2 à 5, caractérisée en ce que le tronçon de ligne situé entre la partie de ligne située vers la source d'énergie et le côté moteur d'entraînement de la ligne d'alimentation en énergie s'étend en forme de boucle sur le bras porteur (28).
  8. Machine à cintrer selon la revendication 6, caractérisée en ce que le logement de ligne (40) sur le bras porteur (28) est délimité par un boîtier (36) d'un moteur (29) d'entraînement en rotation de la tête à cintrer (4).
  9. Machine à cintrer selon l'une des revendications précédentes, caractérisée en ce que, pour au moins un moteur (23, 24, 25) d'entraînement d'outil, il est prévu en plus d'au moins une ligne d'alimentation en énergie au moins une autre ligne de connexion pour laquelle les caractéristiques des revendications 2 à 8 sont prévues d'une manière correspondante.
  10. Machine à cintrer selon l'une des revendications précédentes, caractérisée en ce qu'au moins un moteur (29) d'entraînement en rotation de la tête à cintrer (4) est reçu à l'intérieur du bras porteur (28).
  11. Machine à cintrer selon l'une des revendications précédentes, caractérisée en ce que la tête à cintrer (4) est rotative par rapport au bras porteur (28) autour de l'axe de rotation (26).
  12. Machine à cintrer selon l'une des revendications précédentes, caractérisée en ce que le bras porteur (28) est installé sur un support pivotant (31) qui est lui-même monté à rotation sur le bâti (2) de la machine à cintrer autour d'un axe (32) de rotation de support pivotant s'étendant parallèlement à la direction longitudinale (9) des pièces à usiner, sachant que l'axe de rotation (26) de la tête à cintrer (4) et l'axe (32) de rotation de support pivotant sont mutuellement décalés en direction transversale à l'axe.
EP20020022075 2002-10-02 2002-10-02 Machine à cintrer avec une tête à cintrer rotative Expired - Lifetime EP1405680B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20020022075 EP1405680B1 (fr) 2002-10-02 2002-10-02 Machine à cintrer avec une tête à cintrer rotative
DE50205694T DE50205694D1 (de) 2002-10-02 2002-10-02 Biegemaschine mit drehbarer Werkzeugeinheit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20020022075 EP1405680B1 (fr) 2002-10-02 2002-10-02 Machine à cintrer avec une tête à cintrer rotative

Publications (2)

Publication Number Publication Date
EP1405680A1 EP1405680A1 (fr) 2004-04-07
EP1405680B1 true EP1405680B1 (fr) 2006-01-25

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ID=31985038

Family Applications (1)

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EP20020022075 Expired - Lifetime EP1405680B1 (fr) 2002-10-02 2002-10-02 Machine à cintrer avec une tête à cintrer rotative

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EP (1) EP1405680B1 (fr)
DE (1) DE50205694D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006029749A1 (de) * 2006-06-28 2008-01-03 Chiao Sheng Machinery Co. Ltd. Anordnung der Biege- und Pressräder-Sätze einer Rohrbiegemaschine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009038384A1 (de) * 2009-08-24 2011-03-03 Tracto-Technik Gmbh & Co. Kg Vorrichtung zum Biegen länglicher Werkstücke
DE102013200850B4 (de) * 2013-01-21 2015-01-22 Wafios Aktiengesellschaft Vorrichtung zum Biegen strangförmiger Werkstücke

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH683598A5 (de) * 1990-03-13 1994-04-15 Mewag Maschinenfabrik Ag Rohrbiegemaschine.
DE4302757C1 (de) * 1993-02-01 1994-03-17 Igus Gmbh Kabelführung
US6192728B1 (en) * 2000-05-30 2001-02-27 Yin Lin Machine Industrial Co., Ltd Pipe bending machine accurately controlling bent angles of pipes
ATE246560T1 (de) * 2001-01-30 2003-08-15 Blm Spa Maschine zum biegen von strangförmigem material, wie rohren, stangen, profilen oder metalldraht

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006029749A1 (de) * 2006-06-28 2008-01-03 Chiao Sheng Machinery Co. Ltd. Anordnung der Biege- und Pressräder-Sätze einer Rohrbiegemaschine
DE102006029749B4 (de) * 2006-06-28 2010-01-28 Chiao Sheng Machinery Co. Ltd. Anordnung der Biege- und Pressräder-Sätze einer Rohrbiegemaschine

Also Published As

Publication number Publication date
EP1405680A1 (fr) 2004-04-07
DE50205694D1 (de) 2006-04-13

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