EP0949021B1 - Dispositif pour le formage de fil ayant un dispositif de freinage de fil - Google Patents

Dispositif pour le formage de fil ayant un dispositif de freinage de fil Download PDF

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Publication number
EP0949021B1
EP0949021B1 EP99105833A EP99105833A EP0949021B1 EP 0949021 B1 EP0949021 B1 EP 0949021B1 EP 99105833 A EP99105833 A EP 99105833A EP 99105833 A EP99105833 A EP 99105833A EP 0949021 B1 EP0949021 B1 EP 0949021B1
Authority
EP
European Patent Office
Prior art keywords
wire
axis
program
rotatable
holder
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
EP99105833A
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German (de)
English (en)
Other versions
EP0949021A2 (fr
EP0949021A3 (fr
Inventor
Dietmar Sautter
Andreas Schur
Norbert Speck
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.)
Wafios AG
Original Assignee
Wafios AG
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
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Application filed by Wafios AG filed Critical Wafios AG
Publication of EP0949021A2 publication Critical patent/EP0949021A2/fr
Publication of EP0949021A3 publication Critical patent/EP0949021A3/fr
Application granted granted Critical
Publication of EP0949021B1 publication Critical patent/EP0949021B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire
    • B21F1/008—Bending wire other than coiling; Straightening wire in 3D with means to rotate the wire about its axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • a wire-forming device WAFIOS-FTU 3
  • This device has a flange (118) which is fixed to the frame and has an extension arm (140) on which a wire guide insert (136) is mounted in a radially adjustable manner, which has an eccentric wire guide bore (137) and which interacts with a cutting tool (14).
  • the wire guide (130) ending at the insert (136) always rotates around the wire axis in synchronism with the pairs of feed rollers.
  • a special feature in the case of DE 197 36 468 A1 is a remotely rotatable wire gripper (64) which is arranged on the rotatable wire guide (70) for the rotationally fixed clamping of the wire, which wire cannot rotate about its axis like jamming feed rollers.
  • the device according to the invention is characterized by the characterizing features of claims 1 to 4; it is preferably a device according to claim 5. The invention also relates to the method according to claim 6.
  • the object of the invention is the geometric shape accuracy of the, from DE 42 29 294 C1 known device for forming wire three-dimensional wire structures to improve substantially, and this consistently, and to increase the output of the device, d. H. an increase in quality of finished workpieces, and an increase in performance to achieve in a device for molding three-dimensional workpieces.
  • this is firstly achieved in that the rotatable on the bearing body Wire feed device of the device for forming wire according to DE 42 29 294 C1 rigid arranged output wire guide device by a known rotatable wire guide device is replaced, and secondly in that the rotating wire guide device with a program-controlled and force-controlled wire "brake” device according to the invention is provided, the servo drive for the shaping process, together with the servo drives of the other device units is controlled by the machine control.
  • the wire brake device which is program-controlled and force-controlled for each individual working section on a workpiece to be manufactured.
  • the braking force acting on the wire can be set in a program-controlled manner in such a way that a damping effect occurs during the shaping process, for example when a workpiece part that has already been produced is turned over in the wire forming area.
  • a holding or stabilizing effect can be achieved during machining operations on the stationary wire, so that the wire, if necessary, cannot twist in the angular position of a section that has already been produced.
  • the braking force acting on the incoming wire can be predefined by the computer in such a way that, for example during winding, the play between the incoming wire and the wire guide is reduced in such a targeted manner that an exact spring shape and spring pitch is achieved during the winding process, but the wire is still can be fed.
  • 1 and 2 is a rotatable wire feed device (10), a rotatable wire guide device (12) with a wire brake device (114), a wire forming station (14) and a cutting device (16) for cutting the workpiece from the endless wire (18) of a CNC-controlled device to see wire forming.
  • the known CNC-controlled rotatable described in DE 42 29 294 C1 Wire feed device (12) has a feed housing (22) in which a total of four wire feed rollers (24) are rotatably mounted, which advance the wire (18) into the wire forming station (14).
  • the Rollers (24) are arranged in pairs and are operated by a first CNC-controllable servo motor (26) via two toothed belt transmissions, of which only one (28) is shown here, program-controlled Speed-controlled intermittent, optionally driven forwards and backwards.
  • the feed housing (22) of the wire feed device (10) is itself in one on the device for forming wire-fastened bearing body (30) rotatably mounted.
  • the feeder housing (22) is program-controlled by a second controllable servo motor (34) via a toothed belt gear (36), intermittently driven either forwards or backwards.
  • the wire inlet side of the rotatably mounted feed housing (22) a conventional wire straightening device (38) with horizontally and vertically arranged straightening rollers for straightening of the wire (18) attached to the extended feed housing. before this through the feed housing (22) is inserted between the feed rollers (24).
  • the wire guide device On the right side in FIG. 1 of the bearing body (30) is part of the wire guide device a two-part, consisting of an upper part (42) and a lower part (44) and on the feed housing (22) held wire guide (48) rotatably mounted in the bearing body (30).
  • the wire guide (48) extends to the left up to the outlet of the right pair of wire feed rollers and back right up to an eccentric wire holder (52).
  • the wire holder (52) is part of the rotatable wire guide device (12). This also consists of one, outside of the front plate (58) of the machine frame in the plate (58) roller bearings around the Wire axis rotatable boom (60) on a rotatable flange (62) in the plate (58) with a Toothed pulley (64) of a toothed belt drive (66) is screwed.
  • the toothed disc (64) is about a toothed belt (68) of the toothed belt drive (66) from a third CNC-controllable servo motor (70) Program-controlled, intermittent, optionally driven forwards and backwards.
  • the wire holder (52) is releasably attached, which is axially in front of the front exit of the wire guide (48) which is rotatable with the wire feed device (10).
  • a pull rod (116) is slidably guided in the arm (60) of the rotatable wire guide device (12) to actuate the wire brake device (114).
  • One end of the pull rod (116) is connected to a two-armed lever (120) by a bolt (118).
  • the lever (120) is pivotally mounted in the arm (60) on a bolt (122).
  • the free lever arm (124) of the lever (120) presses on the rounded end of a pressure bolt (128), which is preloaded via a compression spring (126) in the (two-part) wire holder (52) and has a prismatic recess at its other end .
  • This prismatic end of the bolt (128) interacts with the wire (18) passing by, friction forces resulting in braking forces.
  • the end of the pull rod (116) opposite the lever (120) is connected to a switching ring (130) firmly connected.
  • the switching ring (130) is mounted axially displaceably in a sliding bush (132), however held radially in the sleeve (132) not rotatable.
  • the switching ring (130) rotates to the same extent.
  • the switching ring (130) is with a Provided circumferential groove (134) on its outer circumference, in the two switching claws (136) of a two-armed Engage the shift lever (138).
  • the shift lever (138) can be pivoted approximately centrally in a bearing (140) on a bolt (142) stored.
  • the bearing (140) is firmly connected to the front plate (58).
  • the arm of the shift lever (138) opposite the shifting claws (136) has an internal thread bearing lever eye (144) into which a threaded spindle (146) is screwed.
  • the threaded spindle (146) can be controlled via a coupling (148) with the stub shaft (150) of a CNC Servo motor (152) non-rotatably connected.
  • the rotatable wire guide device can be used (12) the holder (52) can be brought into the most favorable position, e.g. for beating around of a partially manufactured workpiece, or that the wire holder (52) is turned so that when cutting a finished workpiece from the endless wire, the cutting knife (100) the cutting device (16) the wire (18) against the larger wall thickness of the holder (52), which also serves as a counter knife, cuts off.
  • the wire forming station (14) is on the front panel (58), which is also the shaping side of the device for forming wire is arranged. It consists of several radially around the wire guide hole (74) of the wire holder (52) attached processing units. 2 are three of these Units shown, namely a winch / bending unit (78), a CNC slewing gear (80) and one CNC pusher unit belonging to the cutting device (16).
  • the winch / bending unit (78) is in DE 42 29 294.C1 and DE 39 15 784 C1 described in more detail.
  • a fourth CNC-controllable servo motor (84) is selected, the degree of shaft rotation, the direction of rotation and the standstill are freely selectable.
  • a possibly simultaneous one Can perform longitudinal movement is provided in order to the shaft (80), in addition to its rotary movement, also a possibly simultaneous one Can perform longitudinal movement.
  • the size of the longitudinal movement of the shaft (82) is also by the CNC control freely selectable.
  • the slide unit belonging to the cutting device (16) is controlled by another CNC Servo motor (96) via a crank mechanism (not shown) and one that is also not shown Conrod driven.
  • the cutting knife (100) is at the free end of the in a slide guide the cutting device (16) in a longitudinally displaceably slidable cutting slide (102) in a receptacle (104) held interchangeably.
  • the straight wire and clamped between the feed rollers (24) is endless wire (18) upon activation of the first servo motor (26) through the wire guide (48) and the holder (52) by means of the CNC-controlled feed rollers (24) intermittently horizontally in a straight line advanced into the wire-forming station (14) and in accordance with those arranged on the tool holder (86), effective tools are deformed.
  • the CNC controlled withdrawal of the wire is also possible by reversing the direction of motor rotation.
  • the positioning of the individual tools before the shaping process and the active one Tool movement for shaping the workpiece is carried out by the CNC control of the servo motors of the winch and bending unit (78) and are from the exemplary DE 39 15 784 C1 known.
  • the endless wire (18) fed by means of the feed rollers (24) is fed by the second servo motor (34) via the toothed belt gear (36) and the feed housing (22) CNC-controlled in the predetermined Angle and at the right time, if necessary, simultaneously with the feeding of the wire (18) by the feed rollers (24), for each individual shaping section of the wire in the most favorable spatial processing position before carrying out the next processing step turned.
  • the CNC control of the third controllable servo motor (70) for the molding process most favorable location rotated.
  • the program-controlled and force-controlled Wire brake device (114) by activating the CNC-controllable servo motor (152) to be brought.
  • the size of those transferred to the wire (18) via the pressure pin (128) The braking force is dependent on the respective shaping process from the CNC machine control given.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (6)

  1. Dispositif pour le formage de fil métallique en produits en fil métallique, comprenant un guide-fil (48) rectiligne et disposé à son entrée un dispositif (10) d'introduction de fil dont les éléments (24), qui serrent le fil (18) introduit en ligne droite en le bloquant en rotation, sont rotatifs conjointement avec le guide-fil (48) autour de l'axe du fil ; et comprenant un porte-fil (52), disposé sur un avant-bras (60) à la sortie du guide-fil (48) et guidant plus loin le fil (18) sortant de ce dernier, le porte-fil (52) coopérant à sa sortie avec un outil (100) de coupe mobile transversalement à l'axe du fil ; l'avancement du fil vers cette sortie de porte-fil, et un éventuel rappel du fil de cette sortie de porte-fil par le dispositif (10) d'introduction de fil, ainsi que la rotation partielle du dispositif (10) d'introduction de fil autour de l'axe du fil, pouvant être commandés par programme en adaptation mutuelle,
    caractérisé en ce que, pour un dispositif de ce genre doté d'un avant-bras (60) pouvant être guidé autour de l'axe du fil sur une trajectoire circulaire et pourvu d'un porte-fil (52), il est prévu pour cet ensemble un dispositif (114) de freinage de fil pouvant être commandé à distance, qui agit radialement sur le fil (18) que l'on fait avancer et qui peut être à cet effet commandé par programme.
  2. Dispositif suivant la revendication 1, caractérisé en ce que le dispositif (114) de freinage de fil comporte un élément (128) de freinage à ressort, monté sur un levier (120) qui, au moyen d'une tige (116) articulée de pression et de traction, guidée parallèlement à l'axe du fil dans l'avant-bras (60), est rotatif autour d'un axe (118) croisant perpendiculairement l'axe du fil.
  3. Dispositif suivant la revendication 2, caractérisé en ce que, pour un dispositif de ce genre doté d'une bride (62) pour l'avant-bras (60), qui est montée à rotation autour de l'axe du fil sur le bâti (58) de machine et dont l'entraínement (66) peut être commandé par programme, un tambour (130) est monté coaxialement dans la bride (62) et sur le guide-fil (48) à rotation et translation axiale, tambour sur lequel est fixée, comme entraíneur axial, l'extrémité de la tige (116) qui est éloignée de l'élément de freinage.
  4. Dispositif suivant la revendication 3, caractérisé en ce que le tambour (130) comporte une rainure (134) périphérique courant autour de l'axe de guidage du fil, rainure dans laquelle pénètre à complémentarité de forme une extrémité libre d'un levier (138) de commutation, qui est monté sur le bâti (58) de machine et qui peut être mis en rotation au moyen d'un entraínement (152) pouvant être commandé par programme, qui produit la force de freinage.
  5. Dispositif suivant l'une des revendications 1 à 4, comprenant un arbre (82) qui est monté à rotation à la sortie du porte-fil (52) et dont l'axe longitudinal et de rotation est proche de la trajectoire rectiligne du fil à l'extérieur du porte-fil (52), et comportant un porte-outil (86), qui est disposé à l'extrémité libre de l'arbre (82) et qui porte au moins un outil (88 ou 90) pour enrouler et/ou plier le fil (18) apporté, les mouvements de rotation et de translation de l'arbre (82) pour déplacer l'outil (88 ou 90) dans la trajectoire du fil ou par rapport à celle-ci pouvant être commandés par programme.
  6. Procédé pour le formage de fil métallique en produits en fil métallique, suivant lequel le fil à mettre en forme, redressé lors de l'introduction, est, sous la commande d'un programme, avancé dans sa direction longitudinale vers le poste de formage ou rappelé de ce poste de formage, et est, sous la commande d'un programme, mis en rotation en va-et-vient autour de son axe longitudinal rectiligne, caractérisé en ce que le déplacement longitudinal et/ou la rotation du fil à mettre en forme est/sont freiné(s), sous la commande d'un programme, à proximité du poste de formage.
EP99105833A 1998-04-11 1999-03-23 Dispositif pour le formage de fil ayant un dispositif de freinage de fil Expired - Lifetime EP0949021B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19816403A DE19816403C2 (de) 1998-04-11 1998-04-11 Vorrichtung zum Formen von Draht mit einer Drahtbremseinrichtung und Verfahren zum Formen von Draht
DE19816403 1998-04-11

Publications (3)

Publication Number Publication Date
EP0949021A2 EP0949021A2 (fr) 1999-10-13
EP0949021A3 EP0949021A3 (fr) 2001-01-17
EP0949021B1 true EP0949021B1 (fr) 2001-12-19

Family

ID=7864426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99105833A Expired - Lifetime EP0949021B1 (fr) 1998-04-11 1999-03-23 Dispositif pour le formage de fil ayant un dispositif de freinage de fil

Country Status (3)

Country Link
US (2) US6092565A (fr)
EP (1) EP0949021B1 (fr)
DE (2) DE19816403C2 (fr)

Families Citing this family (13)

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Publication number Priority date Publication date Assignee Title
US6604395B2 (en) * 2001-07-23 2003-08-12 St Assembly Test Services Ltd. Semi-automated probe bender
JP3744910B2 (ja) * 2003-02-10 2006-02-15 オリイメック株式会社 線ばね成形装置
DE502004004631D1 (de) * 2003-12-22 2007-09-27 Komax Holding Ag Kabelbearbeitungseinrichtung
US7951319B2 (en) 2006-07-28 2011-05-31 3M Innovative Properties Company Methods for changing the shape of a surface of a shape memory polymer article
GR1005986B (el) * 2006-10-03 2008-07-10 Μεθοδος και συστημα παραγωγης τρισδιαστατων προϊοντων απο συρμα.
CN102328004B (zh) * 2011-10-12 2013-04-24 西安建筑科技大学 一种小直径丝材弯折机
CN103785774B (zh) * 2014-03-05 2015-01-28 方大力 用螺杆式夹紧装置和弯曲力传感器的炉丝弯曲工艺
US20150318674A1 (en) * 2014-05-01 2015-11-05 David Peavy Wire Puller
CN205967232U (zh) * 2015-12-24 2017-02-22 博罗县石湾联科精密五金有限公司 用于弹簧成型机的伺服旋转式全功能刀具组件
US11007563B2 (en) 2016-04-27 2021-05-18 Advanced Orthodontic Solutions Wire bending machine
TWM541340U (zh) * 2016-09-29 2017-05-11 Boluo Shiwan Union Precision Hardware Co Ltd 用於彈簧成型機之伺服旋轉式全功能刀具模組
AT520359B1 (de) * 2017-07-11 2019-09-15 Sw Automatisierung Gmbh Drahthandlingvorrichtung
DE102019212090B4 (de) * 2019-08-13 2024-02-01 Wafios Aktiengesellschaft Umformmaschine mit Einzugseinrichtung

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DE2030793C2 (de) * 1970-06-23 1972-06-15 SpuhlAG, St Gallen (Schweiz) Vorrichtung zur Befestigung eines Kantendrahtes an den Randfedern eines Federkorpers
US4187889A (en) * 1978-08-14 1980-02-12 The Boeing Company Wire pinch mark detector for use in method and apparatus for semiautomatically manufacturing electrical wire harness
GB2095134B (en) * 1981-03-25 1984-11-07 Lansing Bagnall Ltd Wire-laying tool
AT391037B (de) * 1982-09-30 1990-08-10 Sticht Fertigungstech Stiwa Spulenwickeleinrichtung
JPS61229433A (ja) * 1985-04-03 1986-10-13 Asahi Seiki Kogyo Kk 両端に独乙式フツクを備える引張りばねの連続自動成形方法及び装置
DE3915784C1 (fr) * 1989-05-13 1990-07-05 Wafios Maschinenfabrik Gmbh & Co Kg, 7410 Reutlingen, De
US5184651A (en) * 1990-10-24 1993-02-09 Matsushita Electric Industrial Co., Ltd. Wire winding apparatus
DE4229294C1 (de) * 1992-09-02 1993-12-16 Wafios Maschinen Wagner Vorrichtung zum Formen von Draht
DE19549397C2 (de) * 1994-09-20 1997-12-11 Statomat Spezialmaschinen Vorrichtung zum Wickeln von Spulen für elektrische Maschinen
JP2812433B2 (ja) * 1996-08-23 1998-10-22 株式会社板屋製作所 スプリング製造装置

Also Published As

Publication number Publication date
DE19816403A1 (de) 1999-10-21
EP0949021A2 (fr) 1999-10-13
US6397900B1 (en) 2002-06-04
EP0949021A3 (fr) 2001-01-17
US6092565A (en) 2000-07-25
DE19816403C2 (de) 2001-06-13
DE59900566D1 (de) 2002-01-31

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