EP1380361B1 - Dispositif de cintrage avec outil de cintrage et entraînement de cintrage - Google Patents

Dispositif de cintrage avec outil de cintrage et entraînement de cintrage Download PDF

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Publication number
EP1380361B1
EP1380361B1 EP02015759A EP02015759A EP1380361B1 EP 1380361 B1 EP1380361 B1 EP 1380361B1 EP 02015759 A EP02015759 A EP 02015759A EP 02015759 A EP02015759 A EP 02015759A EP 1380361 B1 EP1380361 B1 EP 1380361B1
Authority
EP
European Patent Office
Prior art keywords
bending
workpiece
drive motor
pivot arm
axis
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
EP02015759A
Other languages
German (de)
English (en)
Other versions
EP1380361A1 (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 DE50207853T priority Critical patent/DE50207853D1/de
Priority to ES02015759T priority patent/ES2271154T3/es
Priority to EP02015759A priority patent/EP1380361B1/fr
Priority to US10/619,075 priority patent/US7017380B2/en
Publication of EP1380361A1 publication Critical patent/EP1380361A1/fr
Application granted granted Critical
Publication of EP1380361B1 publication Critical patent/EP1380361B1/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 device on a bending machine for bending rod and / or rod-like workpieces, in particular pipes, with a bending tool and a bending drive with swivel arm and Biegeantriebsmotor, wherein the bending tool has at least one workpiece abutment and on the pivot arm at least one pressure piece and the swivel arm with the pressure piece by means of the bending drive motor is pivotable about a bending axis extending in the workpiece transverse direction and the workpiece acted upon by the pressure piece against the associated workpiece abutment is pivotable about the workpiece abutment while pivoting the swivel arm with the pressure piece.
  • an electric bending drive motor is housed inside a bending table, which projects from a machine frame and at its free end with is provided a bending tool.
  • the bending tool comprises two bending dies which rest on the opposite ends of a shaft.
  • the geometric axis of this wave i. the bending axis, runs in the workpiece transverse direction.
  • a pivot arm which is pivotable about the bending axis when the shaft and the bending dies rotate. Clamping jaws cooperating with the bending dies are movable on the swivel arm in the workpiece transverse direction.
  • the drive of bending die and swivel arm for workpiece bending by means of the electric bending drive motor whose motor shaft is connected via a transmission with a transversely extending axis of bending of the transmission shaft.
  • the rotational movement of the transmission shaft is transmitted via a deflection gear in the form of a bevel gear on the concentric to the bending axis arranged and the bending dies and the pivot arm supporting shaft.
  • the previously known bending drive and thus also the entire previously known bending device build relatively large. This applies in particular to cases in which a large bending moment is applied and a correspondingly voluminous bending drive motor is to be used.
  • the present invention has set itself the goal.
  • this object is achieved by the subject matter of claim 1. Due to the thus provided alignment of the motor shaft of the bending drive motor parallel to the bending axis, an otherwise required, installation space needing reversing gear is unnecessary. Since the Biegetrieb drive motor has two output sides and the pivot arm is connected to both output sides, the engine torque is distributed in several places in the pivot arm initiated. Overall, this results in a unit that is extremely powerful regardless of their compact design and has due to their small dimensions and their low mass optimal mobility about the orientation of the bending tool against workpieces to be machined.
  • the preferred types of invention according to claims 2 and 3 are characterized by a particularly compact design.
  • the motor shaft of the bending drive motor is arranged coaxially with the bending axis.
  • Torque motors ie slow-speed electric drive motors, have one low height and can also apply high torques.
  • Claim 5 relates to a bending device which operates on the principle of unwinding stretch bending and for this purpose advantageously makes use of the bending drive concept according to the invention.
  • the subject matter of claim 6 is a bending device by means of which workpieces can be bent in different directions (right / left bending) using the bending drive according to the invention.
  • a bending machine 1 comprises a machine base body 2 and a bending device 3 in the form of a bending head, which is attached via a boom arrangement 4 to an end face of the machine base body 2.
  • the machine base body 2 carries a workpiece feed carriage 5 and a mandrel return carriage 6.
  • the workpiece feed carriage 5 is provided with a chuck 7 of conventional design, in which a tube 8 is held in the example shown.
  • a chuck 7 of conventional design, in which a tube 8 is held in the example shown.
  • the Dorn Wegzugwagen 6 a hidden in the figure mandrel is mounted, which passes through the pipe 8 in the usual way by the Werk Swissvorschubwagen 5 and the chuck 7 through and at its end remote from the Dorn Wegzugwagen 6 end has a bending mandrel.
  • the tube 8 is positioned in its longitudinal direction or in its circumferential direction relative to the bending device 3.
  • the mandrel can be moved inside the tube 8 between a use and a retracted position back and forth.
  • the bending device 3 has a support structure 9 with a bending tool 10 and also a CNC-controlled bending drive 11.
  • the bending tool 10 comprises workpiece abutments 12, 13 in the form of bending dies, which are provided so as to be rotatable about a bending axis 14 running in the workpiece transverse direction and with circumferential tube grooves 15, 16. With the workpiece abutments 12, 13 acting as plungers 17, 18 Spannbakken the bending tool 10 cooperate.
  • the pressure pieces 17, 18 have tube grooves 19, 20 and are movable on a pivot arm 21 of the bending drive 11 in the workpiece transverse direction.
  • the bending drive 11 comprises a bending drive motor 22 and a gear 23, 24 designed as a torque motor. Via the gears 23, 24, the bending drive motor 22 is drive-connected to the workpiece abutments 12, 13 and to the swivel arm 21.
  • the workpiece abutments 12, 13 are rotatable about the bending axis 14 by means of the bending drive motor 22, the pivot arm 21 with the pressure pieces 17, 18 is pivotable about the bending axis 14 by means of the bending drive motor 22.
  • the bending tool 10 in Fig. 2 the bending drive 11 in the Fign. 2 and 3 shown.
  • the bending drive motor 22 has a rotor 25, a stator 26, and a motor shaft 27.
  • the geometrical axis of the motor shaft 27 coincides with the bending axis 14.
  • two motor output side are formed at opposite shaft ends 28, 29.
  • the gear 23, at the end of the shaft 29, the gear 24 connects.
  • the gear 23 is connected to the workpiece abutment 12, the gear 24 to the workpiece abutment 13.
  • the swing arm 21 is attached both to the output side gear member of the transmission 23 and to the output side gear member of the transmission 24 (Fig. 2). This results in a symmetrical introduction of the force applied by the bending drive motor driving force in the pivot arm 21. After the power transmission is distributed to the two gear 23, 24, they can each build relatively small.
  • the entire bending device 3 is rotatably mounted about the support structure 9 on the boom assembly 4 about an axis 30.
  • the boom assembly 4 in turn can be pivoted about an axis 31 relative to the machine body 2. Also, the rotational or pivotal movements of the bending device 3 about the axis 30 and the boom assembly 4 about the axis 31 are numerically controlled.
  • the tube 8 is initially positioned with the bending tool 10 open by means of the workpiece feed carriage 5 in the workpiece longitudinal direction relative to the bending tool 10 in the desired manner.
  • the bending mandrel inside the tube 8 is by appropriate method of Dornzugzugwagens 6 in his Transferred position of use.
  • the bending tool 10 is closed.
  • the tube 8 is thereby clamped between the bending die or the workpiece abutment 12 and the associated clamping jaw or the pressure piece 17. This results in the in Figs. 1 and 2 shown ratios.
  • the pivot arm 21 is pivoted about the bending axis 14 with the clamping jaw or the pressure piece 17 by actuating the bending drive motor 22 in the direction of the arrow 32. This is accompanied by a corresponding rotational movement of the bending die or the workpiece abutment 12.
  • the tube 8 is bent in the direction of arrow 32 over a desired angle to the workpiece abutment 12.
  • a pipe bend running counter to the direction of the arrow 32 can be created using the workpiece abutment 13 and the associated pressure piece 18 of the bending tool 10.
  • the bending tool 10 is compared to its position in FIG. 1 to rotate about the axis 30 and align by pivoting the boom assembly 4 about the axis 31 with the workpiece abutment 13 and the pressure piece 18 such that the tube 8 after closing the bending tool 10 in the Pipe grooves 16, 20 of the workpiece abutment 13 and the pressure member 18 comes to rest.
  • the pivot arm 21 and Turning the workpiece abutment 13 about the bending axis 14 of the desired pipe bend is generated.
  • Torque motors instead of the torque motor shown in the figures, other types of motors, for example synchronous motors, are conceivable as a bending drive motor 22. Torque motors, in particular, are suitable for the gearbox-free direct connection of the motor shaft 27 to the workpiece abutments 12, 13 and / or the pivoting arm 21, deviating from the exemplary case shown, but quite possibly possible.

Landscapes

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

Claims (6)

  1. Dispositif de cintrage équipant une machine de cintrage (1) destinée à cintrer des pièces en forme de tiges et/ou de barres, notamment des tubes (8), comprenant un outil de cintrage (10) et un entraînement de cintrage (11) à bras pivotant (21) et à moteur (22) d'entraînement de cintrage, ledit outil de cintrage (10) comportant au moins un taquet d'appui (12, 13) associée aux pièces, ainsi qu'au moins un organe de pression (17, 18) situé sur le bras pivotant (21), sachant que ledit bras pivotant (21) peut pivoter avec l'organe de pression (17, 18), au moyen du moteur (22) d'entraînement de cintrage, autour d'un axe de cintrage (14) s'étendant dans le sens transversal des pièces ; et que la pièce, sollicitée par l'organe de pression (17, 18) contre le taquet d'appui associé (12, 13), peut être cintrée autour dudit taquet d'appui (12, 13) par pivotement du bras pivotant (21) avec l'organe de pression (17, 18), caractérisé par le fait que l'arbre (27) du moteur (22) d'entraînement de cintrage est orienté parallèlement à l'axe de cintrage (14) et est en liaison menante, par les deux extrémités (28, 29), avec le bras pivotant (21).
  2. Dispositif de cintrage selon la revendication 1, caractérisé par le fait que l'arbre (27) du moteur (22) d'entraînement de cintrage est agencé coaxialement à l'axe de cintrage (14).
  3. Dispositif de cintrage selon l'une des revendications précédentes, caractérisé par le fait qu'un moteur couple est prévu en tant que moteur (22) d'entraînement de cintrage.
  4. Dispositif de cintrage selon l'une des revendications précédentes, caractérisé par le fait que l'arbre (27) du moteur (22) d'entraînement de cintrage est en liaison menante avec le bras pivotant (21), aux deux extrémités (28, 29) dudit arbre, par l'intermédiaire d'une transmission respective (23, 24).
  5. Dispositif de cintrage selon l'une des revendications précédentes, caractérisé par le fait qu'au moins un taquet d'appui (12, 13), associé aux pièces de l'outil de cintrage (10) revêtant la forme d'une matrice de cintrage, est en liaison menante avec l'arbre (27) du moteur (22) d'entraînement de cintrage, et peut par conséquent être animé d'une rotation autour de l'axe de cintrage (14) ; et par le fait que ledit outil de cintrage (10) présente au moins un organe de pression (17, 18) revêtant la forme d'un mors de serrage mobile sur le bras pivotant (21), dans le sens transversal des pièces, la pièce pouvant être enserrée entre la matrice de cintrage et le mors de serrage associé, et pouvant être cintrée à l'état enserré, autour de la matrice de cintrage, par rotation de ladite matrice de cintrage et par pivotement du bras pivotant avec le mors de serrage.
  6. Dispositif de cintrage selon l'une des revendications précédentes, caractérisé par le fait que les deux extrémités (28, 29) de l'arbre (27) du moteur (22) d'entraînement de cintrage sont, respectivement, en liaison menante avec au moins une matrice de cintrage pouvant tourner autour de l'axe de cintrage (14), sachant que les matrices de cintrage affectées aux différentes extrémités (28, 29) de l'arbre sont disposées dans la direction de l'axe de cintrage (14), de part et d'autre du moteur (22) d'entraînement de cintrage, et coopèrent respectivement avec un mors de serrage mobile sur le bras pivotant (21), dans le sens transversal des pièces ; et sachant que ledit dispositif de cintrage (3) peut tourner autour d'un axe (30) s'étendant dans le sens longitudinal des pièces, de sorte que l'une des matrices de cintrage disposées de part et d'autre du moteur (22) d'entraînement de cintrage, ainsi que le mors de serrage associé à ladite matrice, peuvent être sélectivement transférés à une position d'utilisation.
EP02015759A 2002-07-13 2002-07-13 Dispositif de cintrage avec outil de cintrage et entraînement de cintrage Expired - Lifetime EP1380361B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE50207853T DE50207853D1 (de) 2002-07-13 2002-07-13 Biegeeinrichtung mit Biegewerkzeug und Biegeantrieb
ES02015759T ES2271154T3 (es) 2002-07-13 2002-07-13 Dispositivo de doblado con herramienta de doblado y accionamiento de doblado.
EP02015759A EP1380361B1 (fr) 2002-07-13 2002-07-13 Dispositif de cintrage avec outil de cintrage et entraînement de cintrage
US10/619,075 US7017380B2 (en) 2002-07-13 2003-07-11 Bending assembly for bending machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02015759A EP1380361B1 (fr) 2002-07-13 2002-07-13 Dispositif de cintrage avec outil de cintrage et entraînement de cintrage

Publications (2)

Publication Number Publication Date
EP1380361A1 EP1380361A1 (fr) 2004-01-14
EP1380361B1 true EP1380361B1 (fr) 2006-08-16

Family

ID=29724448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02015759A Expired - Lifetime EP1380361B1 (fr) 2002-07-13 2002-07-13 Dispositif de cintrage avec outil de cintrage et entraînement de cintrage

Country Status (4)

Country Link
US (1) US7017380B2 (fr)
EP (1) EP1380361B1 (fr)
DE (1) DE50207853D1 (fr)
ES (1) ES2271154T3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7165962B2 (en) * 2004-12-21 2007-01-23 Hanson Dana R Web handling roll stand
US8549888B2 (en) 2008-04-04 2013-10-08 Nuvasive, Inc. System and device for designing and forming a surgical implant
EP3068556A4 (fr) * 2013-11-15 2018-02-14 Textron Innovations Inc. Fourniture de données pour fonctionnement de cintreuse automatisée
DE102016101908B4 (de) * 2016-02-03 2017-11-02 Dengler Tubetec Gmbh Vorrichtung und Verfahren zum Biegen von Rohren
CN107282720B (zh) * 2017-07-31 2023-08-25 浙江和良智能装备有限公司 一种左右共弯型数控弯管机
CN113680863A (zh) * 2021-08-17 2021-11-23 上海发那科机器人有限公司 一种全伺服双头机器人弯管机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0227779A1 (fr) * 1985-06-28 1987-07-08 Integrated Production Machines Limited Machine de cintrage de tuyaux
US5481891A (en) * 1993-12-20 1996-01-09 Eagle Precision Technologies Inc. Tube bending apparatus and method
US5784913A (en) * 1995-10-06 1998-07-28 Pines Manufacturing Pressure die assist boost system for tube bending machine
CA2221324A1 (fr) * 1997-11-17 1999-05-17 Eagle Precision Technologies Inc. Appareil et methode servant a cintrer les tubes
FR2774317B1 (fr) 1998-01-30 2000-04-07 Silfax Machine a cintrer les tubes et son dispositif a barillet

Also Published As

Publication number Publication date
DE50207853D1 (de) 2006-09-28
EP1380361A1 (fr) 2004-01-14
US20040065131A1 (en) 2004-04-08
ES2271154T3 (es) 2007-04-16
US7017380B2 (en) 2006-03-28

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