EP1380363B1 - Machine à cintrer - Google Patents

Machine à cintrer Download PDF

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Publication number
EP1380363B1
EP1380363B1 EP20020015761 EP02015761A EP1380363B1 EP 1380363 B1 EP1380363 B1 EP 1380363B1 EP 20020015761 EP20020015761 EP 20020015761 EP 02015761 A EP02015761 A EP 02015761A EP 1380363 B1 EP1380363 B1 EP 1380363B1
Authority
EP
European Patent Office
Prior art keywords
bending
base member
machine base
workpiece
machine
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
EP20020015761
Other languages
German (de)
English (en)
Other versions
EP1380363A1 (fr
Inventor
Frank Schmauder
Winfried Richter
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 Werkzeugmaschinen SE and Co KG
Original Assignee
Trumpf Werkzeugmaschinen SE 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 Werkzeugmaschinen SE and Co KG filed Critical Trumpf Werkzeugmaschinen SE and Co KG
Priority to ES02015761T priority Critical patent/ES2280457T3/es
Priority to EP20020015761 priority patent/EP1380363B1/fr
Priority to DE50209344T priority patent/DE50209344D1/de
Publication of EP1380363A1 publication Critical patent/EP1380363A1/fr
Application granted granted Critical
Publication of EP1380363B1 publication Critical patent/EP1380363B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 machine base body, arranged on the machine base bending tool and a workpiece feed device with a movable to the machine base body in a workpiece feed direction workpiece holder, wherein the workpiece by movement the workpiece holder relative to the bending tool in the workpiece feed direction undeliverable and is bendable by means of the bending tool to the machine base body out.
  • DE-A-1 527 394 discloses a bending machine having a machine base body and a bending tool arranged on the machine base body. The sides of the machine body expand from top to bottom to form a chamfer. It is not described whether and, if appropriate, in which way a workpiece to be machined is held and positioned.
  • a generic bending machine is known from DE-A-40 10 445.
  • a rotary bending tool is arranged on a front side of a rectangular machine base body in cross-section.
  • the rotary bending tool can be tubes that are postponed on the top of the machine body in the tube longitudinal direction, bend to the machine body back. In the area of their bent part, the machined tubes can also run counter to the pipe feed direction.
  • the machine body of the prior art pipe bending machine forms a relatively large "disturbing contour" due to its cross-sectional shape, i. a relatively large part of the engine body cross-section is in areas where a deformed pipe may run with a bent part. In the case of the prior art, therefore, there is a considerable risk of collisions machined workpieces with the machine body.
  • the present invention has set itself the goal.
  • this object is achieved by the bending machine according to claim 1.
  • the basic machine body according to the invention has sufficient rigidity and a sufficiently wide base to ensure the required stability and to accommodate functional units of the bending machine, for example, from functionally necessary drive means.
  • the interference contour is advantageously kept small at least at a bending tool end and thus in that area of the machine base body, in which most likely to collisions between machined workpieces and the machine body is to be expected.
  • Claim 3 relates to a bending machine according to the invention, in the case of which the machine base body is bevelled on both longitudinal sides. Consequently, this invention type results in a small interference contour in both right and left bending.
  • the claimed machine base body can thus be used for bending machines that are used exclusively for legal or exclusively for left or right as well as left bending.
  • Claim 4 describes measures according to the invention, which serve to keep the interference contour of the machine body regardless of the use of a Dorn Wegzugs issued.
  • Claim 5 describes an advantageous arrangement of a Maschinenhaltückhalterantreibes and / or a mandrel rod holder drive.
  • the workpiece holder of the workpiece feed device and / or the mandrel rod holder of the mandrel retraction device is arranged above at least one bevel of the machine base body on its upper side (claim 6).
  • the claims 7 and 8 describe bending machines according to the invention, which are advantageously designed as "inclined bed machines".
  • the bevel of the machine base body is used for the storage of at least one of the longitudinal guides and / or at least one drive device for the workpiece holder or the mandrel rod holder.
  • a bending machine 1 comprises a machine base body 2 in the form of a machine frame and a bending head 3, which is attached via a boom arrangement 4 to an end face of the machine base body 2.
  • the bending head 3 has a support structure 5 and a bending tool 6.
  • the bending tool 6 is a conventional rotary bending tool. Other tool designs are conceivable. Bending dies 7, 8 of the bending tool 6 are motor-driven about a bending axis 9 rotatable. A pivoting arm 10, which guides a clamping jaw 11 assigned to the bending die 7 and a clamping jaw 12 assigned to the bending die 8, can be pivoted about the bending axis 9.
  • the entire bending head 3 is rotatably mounted on the support structure 5 about an axis 13 on the boom assembly 4. This in turn is pivotally mounted about an axis 14 on the machine body 2.
  • the rotary or pivoting movement of the bending head 3 and the boom assembly 4 are numerically controlled as well as the other functions of the bending machine 1.
  • a workpiece feed device 15 Provided on the machine main body 2 are a workpiece feed device 15 and a mandrel retraction device 16.
  • the workpiece feed device 15 comprises a workpiece feed carriage 17 which, on its side facing the bending head 3, has a conventional rotary chuck as workpiece holder 18. This is used in the example shown to fix a tube formed as a workpiece 19.
  • a workpiece holder drive 20 with electric drive motors 21, 22 and gears 23, 24 is flanged to the workpiece feed carriage 17.
  • drive pinion on the output sides of the gear 23, 24 mesh with a drive means 25 in the form of a rack of the workpiece holder drive 20.
  • the rack is bolted to the machine body 2.
  • the workpiece 19 is delivered in the workpiece feed direction 26 relative to the bending head 3 and the bending tool 6.
  • the workpiece 19 By simultaneously rotating the workpiece holder 18 about the workpiece longitudinal axis, the workpiece 19 can be aligned in its circumferential direction relative to the bending tool 6. Due to the use of multiple drive motors and gearbox, the individual units can build relatively small.
  • the workpiece holder drive 20 is in "gantry operation". Accordingly, each of the electric drive motors 21, 22 is controlled independently.
  • the longitudinal guides 27, 28 on the machine base body 2 lead next to the workpiece feed carriage 17 of the workpiece feed device 15 and a Dorn Wegzugswagen 29 of the mandrel retracting means 16.
  • a mandrel bar not shown in detail is attached to a mandrel bar holder 30 of the mandrel retraction carriage 29 and interspersed by the Dorn Havenzugswagen 29 starting the Werk Swissvorschubwagen 17th
  • the mandrel bar is provided at its bending tool side end with a bending mandrel which can be moved by moving the Dornschreibzugwagen 29 between a use and a retracted position inside the workpiece 19 back and forth.
  • the movement of the Dorn Wegzugwagen 29 is effected by means of a mandrel rod holder drive 31, which in addition to an electric drive motor 32 and a gear 33 has a not recognizable in the figures drive pinion, which in turn also meshes with the rack or drive means 25.
  • the bending machine 1 is the cross-sectional shape of the machine base body 2.
  • the machine base body 2 has a substantially trapezoidal cross-sectional contour. This applies both to end plates 34, 35 as well as an intermediate and opposite the end plates 34, 35 recessed frame member 36, along which the workpiece feed carriage 17 and the Dorn Wegzugswagen 29 are movable.
  • the workpiece holder 18 and the mandrel bar holder 30 are arranged on the upper side of the machine base body 2. As FIG. 2 in particular clearly shows, this results in a cross-sectional contour with a substantially triangular shape for the entire bending machine 1.
  • the machine base body 2 expands at both in the workpiece feed direction 26 longitudinal sides towards the base to form chamfers 37, 38.
  • the chamfer 37 is straight, the chamfer 38 provided with bends.
  • the chamfer 38 supports the longitudinal guide 28 and the drive device 25 for guiding or for driving the workpiece feed carriage 17 and the Dorngurzugwagen 29.
  • the second longitudinal guide 27 is mounted on the upper side of the machine body 2.
  • the drive motors 21, 22 and the gear 23, 24 of the workpiece holder drive 20 are just like the drive motor 32 and the gear 33 of the mandrel rod holder drive 31 of the chamfer 38 and are aligned substantially parallel to the chamfer 38.
  • the said drive parts are arranged in alignment with each other in the workpiece feed direction 26 one behind the other.
  • the workpiece 19 is positioned with the bending tool 10 open by means of the workpiece feed device 15 in the workpiece feed direction 26 and in the circumferential direction.
  • the bending mandrel in the interior of the workpiece 19 is transferred by appropriate method of the Dorn Wegzugwagen 29 in its position of use.
  • the bending tool 10 is closed.
  • the workpiece 19 is thereby clamped between the bending die 7 and the clamping jaw 11. This results in the conditions shown in Fig. 1.
  • the swivel arm 10 is then pivoted with the clamping jaw 11 in the direction of arrow 39 about the bending axis 9 starting from the operating state according to FIG. 1. If the workpiece 19 in the direction of arrow 39 over an angle of more than 90 ° - in the example shown over an angle of about 180 ° - bent around the bending die 7, so the bent workpiece end runs counter to the workpiece feed direction 26 into the region of the machine base body 2.
  • Fig. 2 is the position of the bent end of the workpiece 19 indicated by dash-dotted lines.
  • the workpiece 19 pivots at about the axis 13 with respect to the position shown in FIG. 1, i. bent against the vertical bending head 3, with unchanged bending direction is bent.
  • the position assumed by the bent end of the workpiece 19 relative to the machine base body 2 is likewise indicated in FIG. 2 and provided there with the reference symbol 19 '.

Claims (8)

  1. Machine à cintrer pour cintrer des pièces (19) semblables à des tiges et/ou à des barres, notamment des tubes, comprenant un socle de machine (2), un outil de cintrage (6) placé sur le socle de machine (2), ainsi qu'un dispositif d'avance (15) pour la pièce doté d'un porte-pièce (18) mobile sur le socle de machine (2) dans un sens d'avance (26) de la pièce, la pièce (19) pouvant être mise en position dans le sens d'avance (26) de la pièce par rapport à l'outil de cintrage (6) en déplacant le porte-pièce (18), et cintrée vers le socle (2) de la machine au moyen de l'outil de cintrage (6), caractérisée en ce que, sur au moins un côté s'étendant dans le sens d'avance (26) de la pièce, le socle (2) de machine s'élargit transversalement au sens d'avance (26) de la pièce, en direction de la base dudit socle (2) au fur et à mesure qu'il s'éloigne du porte-pièce (18), en formant au moins un pan incliné (37, 38), le dispositif d'avance (15) pour la pièce étant au moins en partie situé en face d'un pan incliné (37, 38) du socle (2) de la machine.
  2. Machine à cintrer selon la revendication 1, caractérisée en ce que le socle (2) de la machine s'élargit en direction de la base du socle (2) de la machine au moins à une extrémité située côté outil de cintrage.
  3. Machine à cintrer selon l'une des revendications précédentes, caractérisée en ce que le socle (2) de la machine forme chaque fois au moins un pan incliné (37, 38) au niveau des deux côtés longitudinaux s'étendant dans le sens d'avance (26) de la pièce.
  4. Machine à cintrer selon l'une des revendications précédentes pour cintrer des pièces (19) semblables à des tiges et/ou à des barres, en forme de profilés creux, notamment des tubes, caractérisée en ce qu'est prévu un dispositif de retour du poinçon (16) doté d'un support de poinçon (30) mobile sur le socle de machine (2) dans le sens d'avance (26) de la pièce et en sens inverse, dont le déplacement permet de faire aller et venir un mandrin de cintrage entre une position d'utilisation et une position de retrait, et en ce que le dispositif de retour du poinçon (16) fait au moins en partie face à un pan incliné (37, 38) du socle (2) de la machine.
  5. Machine à cintrer selon l'une des revendications précédentes, caractérisée en ce que le dispositif d'avance (15) de la pièce est située face à un pan incliné (37, 38) du socle de machine (2) avec au moins une partie d'un entraînement (20) pour le porte-pièce et/ou en ce que le dispositif de retour du poinçon (16) fait face à un pan incliné (37, 38) du socle (2) de la machine au moins avec une partie d'un entraînement (31) du support de poinçon.
  6. Machine à cintrer selon l'une des revendications précédentes, caractérisée en ce que le porte-pièce (18) et/ou le support de poinçon (30) est (sont) disposé(s) sur le dessus du socle (2) de la machine, au-dessus d'au moins un pan incliné (37, 38) dudit socle (2) de la machine.
  7. Machine à cintrer selon l'une des revendications précédentes, caractérisée en ce que le support de tube (18) et/ou le support de poinçon (30) est (sont) guidé(s) dans la direction de déplacement au moyen d'au moins deux guides longitudinaux (27, 28) fixés au socle (2) de la machine et décalés l'un par rapport à l'autre tant horizontalement que verticalement, et en ce qu'au moins l'un des guides longitudinaux (27, 28) est prévu sur un pan incliné (37, 38) du socle (2) de la machine.
  8. Machine à cintrer selon l'une des revendications précédentes, caractérisée en ce que le porte-pièce (18) et/ou le support de poinçon (30) est (sont) entraîné(s) dans la direction de déplacement au moyen d'au moins un dispositif d'entraînement (25) fixé sur le socle (2) de la machine, et en ce que le dispositif d'entraînement (25) est prévu sur un pan incliné (37, 38) du socle (2) de la machine.
EP20020015761 2002-07-13 2002-07-13 Machine à cintrer Expired - Lifetime EP1380363B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES02015761T ES2280457T3 (es) 2002-07-13 2002-07-13 Maquina dobladora.
EP20020015761 EP1380363B1 (fr) 2002-07-13 2002-07-13 Machine à cintrer
DE50209344T DE50209344D1 (de) 2002-07-13 2002-07-13 Biegemaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20020015761 EP1380363B1 (fr) 2002-07-13 2002-07-13 Machine à cintrer

Publications (2)

Publication Number Publication Date
EP1380363A1 EP1380363A1 (fr) 2004-01-14
EP1380363B1 true EP1380363B1 (fr) 2007-01-24

Family

ID=29724450

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020015761 Expired - Lifetime EP1380363B1 (fr) 2002-07-13 2002-07-13 Machine à cintrer

Country Status (3)

Country Link
EP (1) EP1380363B1 (fr)
DE (1) DE50209344D1 (fr)
ES (1) ES2280457T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH701801A2 (de) 2009-09-09 2011-03-15 Mewag Maschinenfabrik Ag Biegemaschine zum Biegen von länglichen Werkstücken, insbesondere von Rohren bzw. Profilen.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1527394A1 (de) * 1963-06-14 1969-12-18 Claude Ragache Universalbiegemaschine
CH683598A5 (de) * 1990-03-13 1994-04-15 Mewag Maschinenfabrik Ag Rohrbiegemaschine.

Also Published As

Publication number Publication date
DE50209344D1 (de) 2007-03-15
ES2280457T3 (es) 2007-09-16
EP1380363A1 (fr) 2004-01-14

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