EP0397918A2 - Appareil de formage de fil - Google Patents

Appareil de formage de fil Download PDF

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Publication number
EP0397918A2
EP0397918A2 EP89121199A EP89121199A EP0397918A2 EP 0397918 A2 EP0397918 A2 EP 0397918A2 EP 89121199 A EP89121199 A EP 89121199A EP 89121199 A EP89121199 A EP 89121199A EP 0397918 A2 EP0397918 A2 EP 0397918A2
Authority
EP
European Patent Office
Prior art keywords
wire
tools
tool
bending
winding
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.)
Ceased
Application number
EP89121199A
Other languages
German (de)
English (en)
Other versions
EP0397918A3 (fr
Inventor
Gustav Veit
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 Maschinenfabrik Wagner Ficker and Schmid
Wafios Maschinenfabrik GmbH and Co KG
Original Assignee
Wafios Maschinenfabrik Wagner Ficker and Schmid
Wafios Maschinenfabrik 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6380673&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0397918(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Wafios Maschinenfabrik Wagner Ficker and Schmid, Wafios Maschinenfabrik GmbH and Co KG filed Critical Wafios Maschinenfabrik Wagner Ficker and Schmid
Publication of EP0397918A2 publication Critical patent/EP0397918A2/fr
Publication of EP0397918A3 publication Critical patent/EP0397918A3/fr
Ceased legal-status Critical Current

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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
    • B21F3/00—Coiling wire into particular forms
    • B21F3/02—Coiling wire into particular forms helically
    • B21F3/06—Coiling wire into particular forms helically internally on a hollow form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F3/00—Coiling wire into particular forms
    • B21F3/02—Coiling wire into particular forms helically
    • B21F3/027—Coiling wire into particular forms helically with extended ends formed in a special shape, e.g. for clothes-pegs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F3/00—Coiling wire into particular forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F35/00—Making springs from wire
    • B21F35/02—Bending or deforming ends of coil springs to special shape

Definitions

  • the invention relates to a device for forming wire by winding and / or bending, in particular for producing torsion springs, tension springs, tension springs with handle eyelets bent on both sides, and of bent parts with e.g. curved sections with any radii of curvature, with a continuously or optionally intermittently working wire feed device arranged on the inlet side, with a wire guide and with a plurality of controlled tools arranged on the outlet side of the wire guide, which tools can be moved in a selectable order transversely and possibly longitudinally to the wire emerging from the wire guide .
  • DE-PS 1 293 121 and DE-OS 28 43 444 Devices of the type mentioned are already known (DE-PS 1 293 121 and DE-OS 28 43 444).
  • the wire deflecting tools during an operating cycle by successive actuation of the pivot lever on the continuously conveyed wire to complete Forming a workpiece can be brought into plant.
  • d. H By more or less strong deflection of the pivot lever, d. H. If the tools are located at a more or less short distance in front of the mouth of the wire guide, which is achieved by adjusting the stroke of an assigned cam drive, curved sections of widely differing radius of curvature and wire coils can be produced on the conveyed wire.
  • the invention is based on the object of significantly simplifying the mechanical outlay for a device for forming wire. Furthermore, the necessary deformation operations (winches and / or bending and possibly eyelets) should be carried out as universally as possible.
  • the tools for forming wire by winding and / or bending are arranged in a rotary and sliding head which is interchangeably used in the lower end of a winding spindle, for example a commercially available CNC-controlled leg spring winding machine.
  • a winding spindle for example a commercially available CNC-controlled leg spring winding machine.
  • This enables the bending and winding operations to be carried out directly on the nozzle of a special wire guide.
  • Up to eight tools are preferably fastened in two or more superimposed levels in the rotating and sliding head.
  • An additional device for example an eyelet device, can also be arranged on this head in one of these levels.
  • the tools can be brought into the working position in the desired position from the top or bottom, from the right or left, or even in a superimposed movement .
  • the workpieces are shaped entirely by this multiflexible bending and winding center.
  • conventional leg spring winding and bending machines can be converted as rotating and shifting shafts of the tool head while maintaining the winding mandrel which is only to be driven differently, namely to be controlled in its rotational movement but additionally to be controlled in an axial movement, the wire feed being able to be maintained.
  • a winding spindle (12) is rotatably supported by means of a self-aligning ball bearing (14), which is arranged between two flange stops (16, 18), while the part of the winding spindle (12) underneath is in an additional flange bearing ( 20) is supported with a plain bearing bush (22). All three flange bearings (16, 18, 20) are firmly connected to a winding spindle block (24).
  • the winding spindle (12) which is provided with a toothing (26) over a large part of its length at the circumference, is driven by a controllable servo motor (28) via a toothed belt drive, not shown, and via a toothed pinion, also not shown, the dimension of Winding spindle rotation, the direction of rotation and standstill are freely selectable.
  • a further controllable servo motor (34) which drives a known ball screw drive via a toothed belt drive, which rotates the servomotor in a longitudinal movement for the winding spindle ( 12) converts.
  • This longitudinal movement takes place via further transmission elements. All of these parts are known and therefore not shown.
  • the bore diameter of the self-aligning ball bearing (14) is provided with a sliding fit for this longitudinal movement.
  • the size of the longitudinal movement of the winding spindle (12) can also be freely selected by CNC control.
  • a receptacle (44) for a divided, adapted to the workpiece to be manufactured, from an upper part (46) and lower part (48) existing special wire guide (50) clamped.
  • This receptacle (44) can be adjusted transversely to its longitudinal axis by means of an adjusting screw (52) and thus can be adjusted with respect to the shape grooves of molding tools in tool holders (74, 160).
  • the wire guide (50) is held in the receptacle (44) by means of a cover (54).
  • the bearing block (40) can be adjusted in the direction of the winding spindle (12), as a result of which the length of the wire guide can be adapted to the wire workpiece to be manufactured.
  • a support (58) for the wire guide (50) protruding from the receptacle (44) is provided on the flange bearing (20).
  • An additional wire guide (62) adjoins the wire guide (50) up to the wire feed rollers (not shown).
  • the wire feed rollers are driven by a further controllable servo motor via a toothed belt gear, so that an endless wire (64) is CNC-controlled, intermittently in a straight line horizontally through the guide channels of the wire guides (62, 50) into the bending and winding center (68) in front of the Winding spindle (12) can be advanced.
  • a conical receptacle is provided which receives the cone (72) of a tool holder (74), the so-called rotating and sliding head, and holds it in place by means of a fastening screw (76) reaching through the winding spindle (12) from above becomes.
  • the cone (72) is adjoined by a rectangular part (80) of the tool holder (74), which is recessed in the longitudinal direction over most of its length up to over half its width. The recess is necessary so that the wire workpiece can move freely during the shaping process.
  • the tool (86) lying in plane (I) is designed as a bending tool and is fastened with its prismatic part (118) into a prismatic guide (120) of the tool holder (74) by means of a screw.
  • the bending tool (86) is provided on its left side with a nose (122) in which a guide or working groove (124) is incorporated.
  • lead-in slopes are provided. With this working groove (124), the bends are carried out on the straight leg, for example of the workpiece shown in FIG. 4.
  • a further bending edge (126) is also provided for downward bends, take place when the bending tool (86) has been implicated previously by a 180 o rotation of the winding spindle (12) in bending position and it moves down.
  • the fact that the bending edge (126) is followed by an upward-facing surface (128) which is inclined towards the tool holder (74), can be achieved by an additional brief wire feed after the bending process, a bending angle greater than 90 o , that is, an overbend.
  • the leveling tool (88) is fastened in plane (II) with a cross-sectional profile which is semicircular in its longitudinal direction by means of a screw in a suitable receptacle of the tool holder (74).
  • the winding tool (88) has two lateral, downwardly sloping end faces (100, 102), into each of which (at least) one guide groove (130) for the running wire (64) is incorporated. So that the groove (130) can be adapted to the wind direction of the spring body to be produced, a milling with a rounded base (134) is provided in the tool holder (74).
  • the winch tool (88) is clamped by means of a screw (138) by means of a disk (136) which is concavely rounded on one side with a corresponding radius.
  • the wind tool (88) can be pivoted up or down by a few angular degrees.
  • the spindle (12) moves downward, so that the tool (88) is on and in plane (II) in operative position in front of the wire guide (50), the spindle o rotated 90 counterclockwise the effective zone (100) of the winch tool (88) is used.
  • the running wire (64) forms a spring body which grows out of the plane of the drawing and is wound downwards with left-handed turns.
  • the effective zone (102) is used.
  • the result is a spring body that grows into the plane of the drawing and also coils downward with right-hand turns.
  • an upwardly wound spring body which grows out of the plane of the drawing, forms with right-handed windings and at the effective zone (106) of the winch tool (90) spring body growing into the drawing plane with left-handed turns.
  • FIG. 4 illustrates which of the four space quadrants can be covered with which effective zone in order to carry out turns.
  • the bending edges (114 ′, 114 ⁇ ) of the active zone (114) are for all bends in the 3rd quadrant, facing forwards or backwards, upwards or downwards and standing in space, which are caused by superimposed longitudinal and rotational movements of the winding spindle ( 12) are generated.
  • Effective zone (108) executes all turns in the 1st, effective zone (112) all in the 2nd and effective zone (110) all in the 4th quadrant by appropriate movements of the winding spindle after the effective zones have been brought into the effective position by the winding spindle.
  • this tool (142) its inclined surface (144) corresponds to the surface (128) and a groove (146) corresponds to the working groove (124) of the tool (86) in FIGS. 1 and 3; it is to be used for corresponding operations (turns).
  • the diameters of the spring bodies can be varied within the effective range of the two disc segments, depending on how large the angle of rotation of the winding spindle (12) was to bring the disc segments into operative position.
  • a larger spring body diameter results in a smaller spring body diameter.
  • a tool holder (160) shown in FIGS. 9, 11 there is in addition to a winding tool (162) lying in plane (I ') with working zones (164, 166) ground on both sides, the working zone (164) being used to produce an area for smaller winding diameters , while zone (166) results in a larger diameter, provided it has been previously brought by rotation of the winding spindle (12) 180 0 in operative position in front of the wire guide (50), a plane shown on the right, described below, other in a in Fig. 9 (II ′) acting additional device for molding eyelets attached.
  • the tool (162) is fastened in the tool holder (160) by means of a clamping bolt (168).
  • a clamping bolt (168) For the manufacture of the handle eyelet spring shown in FIG. 12, there is no need for a recess in the tool holder (160) since there are no disturbing circumferential spring parts.
  • a side holder (172) is fastened to the tool holder (160) and a single-acting compressed air cylinder (174) with a return spring (for the extended piston rod) is screwed into it, the piston rod (176) of which carries a fork head (178).
  • the fork head (178) is connected via a movable bracket (180) to a swivel lever (182) which is articulated on the holder (172) by means of a bolt (184).
  • a head (186) is screwed onto the swivel lever (182) and carries eyelets (190).
  • the cylinder (174) is then vented via a control valve, so that the piston rod (176) is retracted by the force of the return spring and the loosening tools swing out.
  • the winding spindle turns 180 o clockwise.
  • the wire (64) with the molded-on eyelet is pulled back until it lies against the winding tool (162) (FIG. 13f) after the winding spindle has moved down as far as shown in FIG. 13a. Now the spindle moves a little further down into the winch position, whereby the wire is bent slightly (Fig. 13g).
  • the winding spindle with the winch tool slowly moves down again (Fig. 13k).
  • the spindle rotates again through 90 o in the counterclockwise direction and the öswerkmaschinee as described above in operative position brought (level II ').
  • Now enough wire is pushed in until the spring body, guided through the guide plate (194), is in the open position away from the wire guide (50) and the tool (192) with the cutting edge has bitten between the two last coiled turns until the bending edge (196) of the head (186) is in the bending position (Fig. 13l).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
EP19890121199 1989-05-13 1989-11-16 Appareil de formage de fil Ceased EP0397918A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3915784A DE3915784C1 (fr) 1989-05-13 1989-05-13
DE3915784 1989-05-13

Publications (2)

Publication Number Publication Date
EP0397918A2 true EP0397918A2 (fr) 1990-11-22
EP0397918A3 EP0397918A3 (fr) 1991-06-12

Family

ID=6380673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890121199 Ceased EP0397918A3 (fr) 1989-05-13 1989-11-16 Appareil de formage de fil

Country Status (5)

Country Link
US (1) US5105641A (fr)
EP (1) EP0397918A3 (fr)
JP (1) JPH0761518B2 (fr)
KR (1) KR920009859B1 (fr)
DE (2) DE3915784C1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5203191A (en) * 1990-05-02 1993-04-20 North America Omcg, Inc. Versatile automatic metal strip working machine
DE4132317C1 (en) * 1991-09-27 1992-08-13 Wafios Maschinenfabrik Gmbh & Co Kg, 7410 Reutlingen, De Grooved wire shaper for spectacle frames - has bending wheel rotatably mounted on support axis for wire bending
DE4229294C1 (de) * 1992-09-02 1993-12-16 Wafios Maschinen Wagner Vorrichtung zum Formen von Draht
JP3329692B2 (ja) * 1997-05-23 2002-09-30 旭精機工業株式会社 ばね成形装置
DE19816403C2 (de) * 1998-04-11 2001-06-13 Wafios Maschinen Wagner Vorrichtung zum Formen von Draht mit einer Drahtbremseinrichtung und Verfahren zum Formen von Draht
DE19825641C1 (de) * 1998-06-09 2000-02-24 Schuessler Technik Bernd Schue Verfahren und Vorrichtung zum Biegen eines Biegeprofils
US6178862B1 (en) * 1998-10-19 2001-01-30 Chen-Nan Liao Cutting tool assembly in coil spring winding machines
US6185981B1 (en) * 1999-08-18 2001-02-13 Wen-Der Chen Transmission control system for a wire forming machine
DE10215047C1 (de) * 2002-04-05 2003-09-18 Omd Spa Vorrichtung zum Formen von Draht, insbesondere Federwinde- und -Biegemaschine
JP2004306076A (ja) * 2003-04-07 2004-11-04 Shinko Kikai Kogyo Kk ばね製造機
KR101043657B1 (ko) * 2008-09-23 2011-06-22 김명호 와이어제품 성형장치
KR101286449B1 (ko) * 2011-12-26 2013-07-23 주식회사 나이스맥 나선절곡용 밴딩헤드
CN103056252B (zh) * 2013-01-29 2015-02-25 广州奥图弹簧有限公司 弹簧冲耳装置
DE202017002608U1 (de) * 2017-05-05 2017-07-13 Wafios Aktiengesellschaft Werkzeugset mit Werkzeugkomponenten zum Konfigurieren von Biegewerkzeugen
EP3698897B2 (fr) 2019-02-21 2023-12-27 WTH Laqua GmbH Outil d'enroulement pour une machine à enroulement de ressort

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2101982A (en) * 1937-02-11 1937-12-14 Raymond F Carlberg Machine and method for forming helical springs
GB492580A (en) * 1937-10-26 1938-09-22 Torrington Mfg Co Improvements in or relating to devices for forming or bending wound springs
US2134469A (en) * 1937-10-26 1938-10-25 Torrington Mfg Co Spring forming device
DE1293121B (de) * 1959-12-12 1969-04-24 U S Baird Corp Vorrichtung zum Formen von Draht
US3983732A (en) * 1975-06-12 1976-10-05 Hartwell Corporation Spring forming machine
US4227392A (en) * 1977-10-05 1980-10-14 Itaya Seisakusho Co., Ltd. Spring winding machine
JPS55117537A (en) * 1979-02-28 1980-09-09 Asahi Seiki Kogyo Kk Method and apparatus for continuous, automatic formation of coil spring having hook at both ends
US4503694A (en) * 1981-08-26 1985-03-12 Shinko Kikaikogyo Kabushiki Kaisha Spring manufacturing machine equipped with two motors
US4416135A (en) * 1981-09-10 1983-11-22 Sleeper & Hartley Corp. Wire coiling machine
FR2535629A1 (fr) * 1982-11-08 1984-05-11 Autocoussin Sa Machine automatique pour cambrer selon une configuration spatiale, des elements metalliques minces et rectilignes, et notamment des fils metalliques
JPS59153537A (ja) * 1983-02-22 1984-09-01 Shinko Kikai Kogyo Kk ばね半製品のフツク起こし装置
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
JPH062296B2 (ja) * 1986-08-22 1994-01-12 旭精機工業株式会社 ばね成形方法及び装置
JPH0357312Y2 (fr) * 1987-03-30 1991-12-26
US4947670A (en) * 1989-11-07 1990-08-14 Wu Chin Tu Universal automatic spring-making machine

Also Published As

Publication number Publication date
JPH0761518B2 (ja) 1995-07-05
KR920009859B1 (ko) 1992-11-02
DE8915888U1 (de) 1992-02-06
JPH02303642A (ja) 1990-12-17
KR900017683A (ko) 1990-12-19
EP0397918A3 (fr) 1991-06-12
US5105641A (en) 1992-04-21
DE3915784C1 (fr) 1990-07-05

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