EP0798058B1 - Vorrichtung zum Formen von Draht, insbesondere Universal-Federwindemaschine mit Schneideinrichtung - Google Patents

Vorrichtung zum Formen von Draht, insbesondere Universal-Federwindemaschine mit Schneideinrichtung Download PDF

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Publication number
EP0798058B1
EP0798058B1 EP97102928A EP97102928A EP0798058B1 EP 0798058 B1 EP0798058 B1 EP 0798058B1 EP 97102928 A EP97102928 A EP 97102928A EP 97102928 A EP97102928 A EP 97102928A EP 0798058 B1 EP0798058 B1 EP 0798058B1
Authority
EP
European Patent Office
Prior art keywords
cutting
wire
drive
unit part
pivot
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
EP97102928A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0798058A2 (de
EP0798058A3 (de
Inventor
Dietmar Sautter
Stefan Holder
Walter Maier
Dietmar Stolfig
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
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 EP0798058A2 publication Critical patent/EP0798058A2/de
Publication of EP0798058A3 publication Critical patent/EP0798058A3/de
Application granted granted Critical
Publication of EP0798058B1 publication Critical patent/EP0798058B1/de
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
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F11/00—Cutting wire
    • 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

Definitions

  • the invention relates to a wire forming device according to the generic preamble of claim 1 (see e.g. DE-A-4138896).
  • the invention relates specifically to the cut for separating the coiled spring from the endless wire in spring coiling machines, in particular spring coiling machines of a larger type with a working range of up to 20 mm wire diameter, for example for the production of cold-formed vehicle suspension springs.
  • Spring coiling machines with a straight cut have been known for a long time (see eg CH-Z. Technica, 1968, No. 10, pp. 839-841, especially Fig. 2), in which the springs can be moved up and down in a straight line in a rigidly arranged slide guide be cut off against a stationary cutting mandrel. So far, this is the most used cutting device in spring coiling machines.
  • the stroke of the knife movement described above must be such that the Cutting edge of the knife in the manufacture of form springs, e.g. tapered feathers, one way passes through, which is at least the maximum possible diameter difference between the largest and the smallest spring outer diameter of the spring corresponds to the winding process of the spring not to be in the way.
  • springs e.g. tapered feathers
  • the invention is therefore based on the object of providing a generic spring winding machine, which is drastically reduced in noise (environmental protection), which is low in vibrations (longer service life the machine and its tools), which works more efficiently (larger number of finished springs per unit of time) and which can be quickly converted from right-handed to left-handed.
  • the electro-hydraulic drive itself is extremely quiet. During the entire working stroke are not uncontrolled pressure profiles in the hydraulic system, even the actual "blow" during the cutting process - triggered by the tearing of the spring steel wire material - affects reduced form.
  • the cutting knife only needs to go through a cutting path that approximates that corresponds to the cutting wire diameter, which may still have to be adapted to the wire strength can.
  • the computer of the machine control determines the optimal cutting stroke, which is sent to the electro-hydraulic NC drive of the cutting cylinder is transmitted.
  • the program-controlled swiveling of the cutting unit for the cut can already take place during the Winding the final turn of the form spring and swinging out after the cut, during the Knife return strokes are started.
  • the work sequence for form springs is therefore: pulling in (Winches) - swung in over time - cut - swing out during the knife -Returns.
  • the cutting unit does not have to be pivoted away all. It can be cut immediately after the winding process.
  • Another advantage of the electro-hydraulic NC drive of the cutting unit is that the cylinder piston always floating between the two oil surfaces on the piston and piston rod side, so that he is neither at top dead center nor at bottom dead center on a mechanical stop moves. This brings excellent hydraulic shock absorption, which results in a significant Noise reduction leads.
  • the stroke position of the working piston of the cylinder can be changed independently of the working stroke.
  • the starting position of the working piston within the total cylinder stroke at which the working stroke is to begin can thus be freely selected in a CNC-controlled manner.
  • This property of the spring coiling machine according to the invention means that cutting knives of different lengths of the cutting unit, for example re-sharpened knives, can be used, and that the starting position of the pitch tool of a pitch device, for example after changing from one wind direction to the other wind direction, with respect to the drawn-in wire without mechanical Adjustment means can be set in a reproducible manner under CNC control, as is described in more detail below. Not only the mentioned free programmability of this NC drive of the cutting cylinder of stroke position and working stroke, but also that of speed, acceleration, dwell time and power bring enormous advantages.
  • the spring winding machine shown in its entirety in FIGS. 1 and 2 mainly exists from a wire feed 10, a wind station 12 with a gradient device 14 and a cutting device 16.
  • the wire feed 10 is e.g. by four pairs of a total of eight wire feed rollers 18 formed that an endless wire 20 in a straight line horizontally through a wire guide 22 in advance the wind station 12.
  • Wire feed rollers 18 are operated by a not shown CNC controllable servo motor driven.
  • the wind station 12 there are two pin-shaped winding tools 32 and 34 permanently deforming the wire 20 running straight on them, a pitch tool 36 and a cutting tool 38. All tools are adjustable, exchangeable and movable.
  • the wire 20 is turned by the two winch tools 32 and 34, which are fastened in two winch devices 44 and 46 arranged one above the other on a right front wall 42 of the machine frame 28, depending on the position of the two winch tools 32 and 34, to the right or left hand (positive or negative helicity) coil springs shaped, ie depending on whether the wire 20 is deflected upward or downward with respect to the wire guide axis 48.
  • the construction and the mode of operation of the two winch apparatuses 44 and 46 correspond to those of the winch apparatuses 30 and 32 described in DE 92 13 164 U1 of the spring coiling machine disclosed therein.
  • the few manipulations described there are also necessary here to convert the two winches 44 and 46 from one wind direction to the other wind direction.
  • a disk-shaped control curve 56 designed as a bead curve, which for Implementation of the rotational movement of the shaft 52 via rollers 58 and a lever 60 in a known manner in a translational movement of the wind tool 32 corresponding to the angle of rotation.
  • the coordinated movement of the winch tool 34 of the lower winch apparatus 46 is controlled by a second disk-shaped control curve 64 designed as a bead curve via rollers 66 and a lever 68 as well as an articulated rod 69, which sits below the shaft 52 on another shaft 70 and via a toothed belt gear 72 from the same servo motor 54 is driven.
  • a second disk-shaped control curve 64 designed as a bead curve via rollers 66 and a lever 68 as well as an articulated rod 69, which sits below the shaft 52 on another shaft 70 and via a toothed belt gear 72 from the same servo motor 54 is driven.
  • each of the two control shafts 52 and 70 has its own CNC-controllable servo motor 54 or 74 program-controlled intermittently rotating forwards and backwards driven.
  • the two winch tools 32 and 34 can be moved separately under program control, can be adapted to special needs.
  • the cutting device 16 When producing right-handed springs, the cutting device 16 is with a cutting cylinder 80 arranged on an upper, activated swivel device 82, while the incline device 14 arranged with a pitch cylinder 86 on a lower passivated pivoting device 88 is. Both cylinders 80 and 86 are hydraulic cylinder-piston units and each with a program-controlled NC valve 78 and 84.
  • a bracket 94 attached to which an angular planetary gear 96 is screwed, which is driven by a CNC-controllable servo motor 98 becomes.
  • a driver flange is arranged on an output shaft journal 100 of the gear 96 in a rotationally fixed manner 102. This is guided by ball bearings in a ring 104 fastened to the console 94.
  • a spacer ring 108 On the distal end of the driving flange 102 is then a spacer ring 108 a toothed disc 110 is arranged, which together with a disc-shaped as a bead curve Control cam 112 is screwed non-rotatably to the driver flange 102.
  • the torque is introduced by the control cam 112 via two rollers 114, which on free end of an arm 116 pivotable on a bolt 118 fastened in the bracket 94 mounted, two-armed, upper pivot lever 120 are arranged.
  • a connecting rod 126 which connects the pivot lever 120 with an upper fork flange 130 connects via a bolt 132.
  • the connecting rod 126 consists of two joint heads 134 and 136, which are connected by a turnbuckle 138.
  • the toothed pulley 110 is via a toothed belt with another, on the drive shaft journal a not shown, but known position encoder connected non-rotatably seated pulley.
  • the encoder driven in this way is used for absolute position monitoring of the swivel device 82.
  • An upper mandrel carrier 144 is fastened to the fork flange 130, which laterally between the lateral End face of the right front wall 42 and the lateral end face of the left front wall 26 of the Machine frame 28 is slidably guided.
  • a cutting mandrel 150 In a rectangular opening 148 of the upper mandrel carrier 144 is a cutting mandrel 150 by means of a known mandrel clamping device, which is not shown in detail but is known 152, which also sits in the breakthrough clamped.
  • the movable cutting tool 38 of the cutting device 16 interacts with the during Cutting process fixed cutting mandrel 150 together as a counter knife.
  • the mandrel 150 can if required for certain types of springs, while not cutting and after the adhesion the mandrel chuck 152 has been released by means of a not shown but also known Device to be withdrawn from the wind area.
  • the housing is at the end of the upper mandrel carrier 144 opposite the fork flange 130 81 of the hydraulically operating cutting cylinder 80 of the cutting device 16 is screwed on.
  • At the end of the cutting cylinder 80 facing the cutting mandrel 150 is in the Piston rod 154 in a receiving bore 156 a cutting tool holder 158 used and attached to the piston rod in which the cutting tool 38 is held clamped is.
  • the upper end of the right machine front wall 42 with the upper end of the The rear wall 92 of the cross member 162 connecting the machine frame 28 is the upper end of a rear bottom guide rod 164 supported while the lower end of the guide rod 164 held firmly clamped in a bearing 166 below the cross member 162 on the right front wall 42 is.
  • An upper guide carriage 170 is slidably mounted on the guide rod 164.
  • An arm 172 of the guide carriage 170 is additionally laterally between the lateral end face the right front wall 42 and the side end face of the left front wall 26 of the machine frame 28 slidably, and protrudes forward between these two walls from the spring coiling machine out.
  • Arm 172 is bifurcated at its front end and intervenes the fork in two bores, two laterally turned on the cylinder housing Pin 176 of the cutting cylinder 80 of the cutting device 16.
  • control cam 112 For swinging out after a wire cut on a coiled spring and swiveling in after Winding a new form spring turns control cam 112, time-controlled by CNC, from oscillating Servomotor 98 from a reciprocating limited rotary movement.
  • the measure can the rotary movement, i.e. the size of the swivel angle, can also be CNC-controlled.
  • the entire cutting device 16 with the upper mandrel carrier 144 can be CNC-controlled by a motor are adjusted in height, whereby the position of the cutting mandrel 150 to the spring diameter to be wound and can be adapted to the wind direction.
  • a bearing 182 is fastened to the cross member 162 at the upper end of the machine frame 28, on which a worm gear 184 is flanged by means of an intermediate flange 186.
  • the Worm gear 184 is controlled by an adjustable servo motor flanged to gear 184 188 CNC controlled.
  • a downwardly projecting one is fixed in the gearbox 184
  • Spindle 190 inserted into the bearing 182 by means of an axial deep groove ball bearing 192 for receiving the axial forces acting on the spindle 190 is rotatably mounted.
  • the spindle 190 is by means of an adjusting nut 194 axially adjustable fixed in the bearing 182.
  • a toothed disk 196 is arranged on the spindle 190 in a rotationally fixed manner.
  • the toothed washer 196 is over a toothed belt with another, on the drive shaft journal of a not shown, but known Position encoder connected non-rotatable toothed pulley.
  • the so driven encoder is provided for position monitoring and / or position display.
  • the spindle 190 is provided with an external thread 200 approximately on its lower half a threaded flange 202 is screwed.
  • the flange 204 of the threaded bush 202 is attached to the upper guide carriage 170 by means of screws.
  • a second guide rod (conceivable with it) 208 provided, the upper end of which is fixed in a bearing 210, the one on the right Front wall 42 of the machine frame 28 is attached, while the lower end of the rod 208 in Bottom of the right front wall 42 is mounted.
  • a lower guide bar 208 On the lower guide bar 208 is a lower one Guide carriage 216 slidably mounted.
  • an arm 218 of the guide carriage 216 additionally between the left front wall 26 and the right front wall 42 on the side thereof Sliding end faces.
  • the arm 218 of the guide carriage 216 is at its front end forked and takes two on the cylinder housing between the fork in two-part bearing holes laterally pivoted pins 222 of the pitch cylinder 86 of the pitch device 14 on.
  • the housing 87 of the pitch cylinder 86 is connected to a lower mandrel carrier 226 Screws firmly connected to the side between the side face of the right front wall 42 and the lateral end face of the left front wall 26 is kept guided; he shows one Opening 148 of the upper mandrel support 144 corresponding rectangular opening 224, in the cutting mandrel 150 with the mandrel clamping device when the two tools 36 and 38 change location 152 is used after they have been removed from the top opening 148.
  • a fork flange 236 corresponding to the fork flange 130 of the cutting device 16 screwed on.
  • the guide carriage 170 and 216 have a bore for receiving a fixing bolt 240 and the fork flanges 130 and 236 with a corresponding to the bolt thread Provided with internal thread.
  • the lower guide carriage 216 by means of a connecting rod 248 is connected to the upper guide carriage 170, so that the lower Guide carriage 216 with the incline 14, the previously described CNC-controlled Height adjustment of the cutting device 16 participates. This allows a second controlled positioning axis can be saved for the lower guide carriage 216.
  • the position of the incline tool 36 must be adjusted the cutting device 16 to a different spring diameter or when changing right-hand winds be adjusted on left winds in relation to the drawn wire. But this is - as mentioned at the beginning - unproblematic, since this is the electro-hydraulic NC drive of the incline 14 via the programmable stroke position adjustment of the working piston of the Incline cylinder 86 executed automatically by the machine control. Of course it could the stroke position adjustment can also be entered manually.
  • the invention is not limited to the above embodiment. There can be a number of changes and modifications are made without departing from the spirit of the invention.
  • electro-hydraulic NC (linear) drives for cutting and Slope electro-pneumatic NC drives can be used, or else it could be for program-controlled Swiveling the cutting unit in and out and for height adjustment of the Cutting device 16 instead of the controllable (electric) servo motors 98 and 188 e.g. one adjustable, hydraulic or pneumatic rotary drive or one direct drive linear drive each Find use.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
EP97102928A 1996-03-25 1997-02-22 Vorrichtung zum Formen von Draht, insbesondere Universal-Federwindemaschine mit Schneideinrichtung Expired - Lifetime EP0798058B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19611661A DE19611661C2 (de) 1996-03-25 1996-03-25 Vorrichtung zum Formen von Draht, insbesondere Universal-Federwindemaschine
DE19611661 1996-03-25

Publications (3)

Publication Number Publication Date
EP0798058A2 EP0798058A2 (de) 1997-10-01
EP0798058A3 EP0798058A3 (de) 1999-02-24
EP0798058B1 true EP0798058B1 (de) 2000-12-06

Family

ID=7789295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97102928A Expired - Lifetime EP0798058B1 (de) 1996-03-25 1997-02-22 Vorrichtung zum Formen von Draht, insbesondere Universal-Federwindemaschine mit Schneideinrichtung

Country Status (4)

Country Link
US (1) US5816091A (ja)
EP (1) EP0798058B1 (ja)
JP (1) JP2923855B2 (ja)
DE (2) DE19611661C2 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2255902A2 (de) 2009-05-28 2010-12-01 WAFIOS Aktiengesellschaft Schnittsystem für Drahtbearbeitungsmaschinen
DE102010014246B3 (de) * 2010-04-08 2011-07-28 Wafios AG, 72764 Drahtbearbeitungsmaschine
DE102014206439B3 (de) * 2014-04-03 2015-09-03 Wafios Ag Dornkasteneinheit für eine Federwindemaschine sowie Federwindemaschine mit Dornkasteneinheit

Families Citing this family (18)

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Publication number Priority date Publication date Assignee Title
JP3300271B2 (ja) * 1998-01-13 2002-07-08 新興機械工業株式会社 ばね製造機
IT1303020B1 (it) * 1998-04-17 2000-10-20 Bobbio S R L Apparecchiatura per la fabbricazione di molle avvolte a spirale eprocedimento di produzione relativo
US6178862B1 (en) * 1998-10-19 2001-01-30 Chen-Nan Liao Cutting tool assembly in coil spring winding machines
DE19919956C1 (de) * 1999-04-30 2000-07-06 Wafios Ag Federwindeeinrichtung, insbesondere für Federwindemaschinen
US6951160B2 (en) * 2003-07-22 2005-10-04 David Wu Cutting device for spring manufacturing machines
DE102011007183A1 (de) * 2011-04-12 2012-10-18 Wafios Ag Verfahren und System zur Programmierung der Steuerung einer mehrachsigen Umformmaschine sowie Umformmaschine
JP5578578B2 (ja) * 2011-12-09 2014-08-27 旭精機工業株式会社 心金支持機構
CN103056248B (zh) * 2012-11-30 2014-11-05 卓坚松 用于外层为铝股的电缆的剥切器
CN105855431B (zh) * 2015-01-23 2019-03-15 富泰华工业（深圳）有限公司 拆线装置
CN105195646B (zh) * 2015-09-21 2017-12-01 宁波鑫淼机械有限公司 一种金属线材进料在线切断机
CN107159824B (zh) * 2017-06-05 2018-11-09 芜湖侨云友星电气工业有限公司 一种线束截断装置
CN108672614A (zh) * 2018-07-25 2018-10-19 芜湖精达机械制造有限公司 一种具有防光功能的钢筋切割机
JP6661035B1 (ja) * 2019-01-07 2020-03-11 新興機械工業株式会社 ばね製造機
CN112490925B (zh) * 2020-10-30 2022-04-12 渤海造船厂集团有限公司 一种船舶电缆切割车
CN113043719B (zh) * 2021-03-16 2022-10-21 江西万丽龙实业有限公司 一种印刷辊间隙辅助调节装置
JP6901645B1 (ja) * 2021-03-30 2021-07-14 旭精機工業株式会社 ばね成形機
CN113319224B (zh) * 2021-05-18 2022-09-23 国网新疆电力有限公司奎屯供电公司 一种电力建设用液压电缆剪
CN117399531B (zh) * 2023-11-06 2024-06-25 中铁三局集团第二工程有限公司 一种高精度钢绞线切割设备及其方法

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2255902A2 (de) 2009-05-28 2010-12-01 WAFIOS Aktiengesellschaft Schnittsystem für Drahtbearbeitungsmaschinen
DE102009022969A1 (de) 2009-05-28 2010-12-02 Wafios Ag Schnittsystem für Drahtbearbeitungsmaschinen
DE102009022969B4 (de) * 2009-05-28 2016-08-04 Wafios Ag Schnittsystem für Drahtbearbeitungsmaschinen
DE102010014246B3 (de) * 2010-04-08 2011-07-28 Wafios AG, 72764 Drahtbearbeitungsmaschine
DE102014206439B3 (de) * 2014-04-03 2015-09-03 Wafios Ag Dornkasteneinheit für eine Federwindemaschine sowie Federwindemaschine mit Dornkasteneinheit

Also Published As

Publication number Publication date
DE59702701D1 (de) 2001-01-11
DE19611661A1 (de) 1997-10-02
EP0798058A2 (de) 1997-10-01
US5816091A (en) 1998-10-06
JP2923855B2 (ja) 1999-07-26
JPH1071442A (ja) 1998-03-17
EP0798058A3 (de) 1999-02-24
DE19611661C2 (de) 1998-09-10

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