EP2239067B1 - Spring production machine - Google Patents
Spring production machine Download PDFInfo
- Publication number
- EP2239067B1 EP2239067B1 EP10001364A EP10001364A EP2239067B1 EP 2239067 B1 EP2239067 B1 EP 2239067B1 EP 10001364 A EP10001364 A EP 10001364A EP 10001364 A EP10001364 A EP 10001364A EP 2239067 B1 EP2239067 B1 EP 2239067B1
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- EP
- European Patent Office
- Prior art keywords
- wire
- mandrel
- machine according
- production machine
- spring production
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- 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.)
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- 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
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- 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
Definitions
- the invention relates to a spring manufacturing machine with a machine frame on which a wire feed and a wire guide for feeding a wire in a feed direction, further downstream of the wire guide, perpendicular to the supplied wire in both the height direction and in the direction perpendicular to the machine frame movable dome and according to this a parallel to the wire feed direction as well as in two mutually and in each case to the wire feed direction movable directions movable forming tool are mounted.
- the machines with 2-finger system are in turn suitable only for the production of pure coil springs without angled legs, since the wire always remains positioned after a single start in the wire guide grooves of the wind finger.
- 2-finger system larger quantities and more accurate spring geometries than with the 1-finger system can be produced.
- the US 1 882 243 A describes an apparatus for forming and bending workpieces of flexible material.
- a rotary mandrel having a wire guide channel, which is formed in the dome at a distance from one side wall and through which the supplied elongated workpiece is passed, wherein it is insertable via an opening of the dome in the wire guide channel.
- the dome is made very solid and allows only a bending of the workpiece around itself.
- the present invention seeks to improve a spring coiling machine, which is normally suitable only in the 2-finger system for producing pure coil springs (compression springs), so that they are also used for the production of simple leg springs in 1-finger system can.
- the mandrel has a wire guide channel which is formed in the dome at a distance from the machine frame facing away from the outer side wall, through which the supplied wire is passed through the mandrel to the forming tool and that the mandrel further comprises an opening for inserting the wire into the wire guiding channel.
- the mandrel in a direction perpendicular to the wire feed direction plane both in the top-bottom, as well as in the front-back direction, and by the use of a movable in two mutually and in each case to the wire feed direction movable forming tool (“3D -Windefinger ”) is in addition to the winds and the bending of the wire in any direction (top-bottom, front-back) feasible.
- 3D -Windefinger a movable in two mutually and in each case to the wire feed direction movable forming tool
- a conventional spring coiling machine which operates on the 2-finger system, can be easily converted to the 1-finger system.
- the exchange of the forming unit, the dome unit and possibly the cutting blade and the wire guide can increase the overall product range producible on the machine quite considerably.
- the economic benefits achieved by the invention are particularly remarkable.
- the wire guide channel is most preferably formed in the form of a guide groove, which, again preferably, has a groove depth which corresponds at least to the diameter of the supplied wire, so that it does not protrude from it as it passes through the guide groove.
- This offers the possibility of executing the wire feed channel also with a closed cross-section, which can be opened to form the opening for inserting the wire in a suitable manner.
- the wire guide channel in the form of a guide groove with a non-closed, but unilaterally open cross-section formed, it is particularly advantageous if the guide groove on its side facing away from the machine frame side legs extending from one end perpendicular to the longitudinal center plane of the wire guide channel and parallel to the wire feed direction plane boundary wall is connected to the outer side wall of the dome, wherein preferably this planar boundary wall, perpendicular to the wire feed direction, has a width which is greater than the wire diameter.
- a further advantageous embodiment of the invention also consists in that the opening for inserting the wire into the wire guide channel runs directly next to the boundary wall and extends over the entire length of the mandrel in the wire feed direction.
- this opening has an opening perpendicular to the plane boundary wall, which corresponds to the wire diameter or slightly larger than this, so that from the outside easy passage of the wire through the opening and its insertion into the wire guide channel is easily possible.
- the wire guide channel is formed as a guide, whose configuration so made that the longitudinal center plane of the guide extends perpendicular to the flat boundary wall.
- the dome is constructed in two parts and includes an upper and a lower dome portion. Both dome sections for creating the opening for inserting the wire into the wire guide channel are preferred from a closed position in which the wire guide channel formed in one of the two dome sections and completely open to the interface between both dome sections is completely covered and closed by the other dome section opened position in which the wire guide channel is opened and the opening for inserting the wire is formed in it between the two Domabitesen.
- a preferred embodiment is also the two dome sections about a common hinge pivot each other and form scissor-shaped hinged, so that the creation of the opening for insertion (or lead out of the wire), the two Domabitese can be opened and thus the desired access to the wire guide channel is created. After the insertion or removal of the wire, however, the two Domabschhitte be closed again and thus again achieved a closed wire guide channel.
- a further preferred embodiment of the spring manufacturing machine according to the invention also consists in that the dome additionally a circular arc-shaped bending surface is formed to the bending system of the supplied wire whose axis of curvature is perpendicular to the feed direction of the wire, wherein, preferably, the bending surface in a direction perpendicular to the longitudinal center plane of the wire guide channel attached to the cathedral.
- the bending axis of the bending surface is advantageously placed so that it is either perpendicular or parallel to the longitudinal center plane of the wire guide channel.
- a very particularly preferred embodiment of the invention consists in the fact that in two-part design of the mandrel, when both parts from a closed to an open position (and vice versa) can be brought, the depth of the guide is chosen slightly smaller than the diameter of the wire and also the cathedral comprising the two dome sections can also be moved in the feed direction of the wire (and in the opposite direction).
- the dome can also be used as a gripper for the wire at the same time, which is held jammed in the closed position of both Domabête between them.
- Fig. 1 shows in a perspective front view of a spring manufacturing machine 1, which operates with the 1-finger system. It essentially consists of a machine frame 2 (shown only in principle), at the front side (also shown only in principle), a straightening unit 3, a wire feed 4, a wire guide 5, a dome unit 6, a forming unit 7, a pitch device 8 and a cutting unit 9 are arranged.
- a wire 10 (see. FIGS. 9 and 10 ) is withdrawn from the wire intake 4 via one or more pairs rotatably driven feed rollers 11 from a wire supply, not shown, straightened in the straightening unit 3 by a plurality of straightening rollers and supplied by the feed rollers 11 downstream wire guide 5 of the forming unit 7 in Drahtzutechnischides s.
- the pitch device 8 is known per se; it makes it possible to generate a correspondingly desired pitch between the individual turns of the spring by moving outward (perpendicular to the wire axis and perpendicularly away from the machine frame 2 to the front).
- the mode of action and the use of such inclining devices is known to the person skilled in the art, so that it is not necessary to discuss them further here.
- each forming slide 13 is equipped at its front end with a forming tool 15, while in the in Fig. 1 shown, converted to 1-finger system spring manufacturing machine 1 only at the lower Umformschieber 13 a forming tool 15 is mounted on an adapter plate 22.
- the forming tool is a 3D wind finger 23 (also called a "leg spring device " ), which serves as the forming unit 7 here.
- the 3D Windefinger 23 has on its the dome unit 6 end face facing a guide groove 28 for receiving, guiding and deflection of the wire 10 (see. FIGS. 9 and 10 ).
- the (upper) Umformschieber 13 of the 2-finger system which is not required for 1-finger conversion, is removed during the conversion to the 1-finger system or moved to a retracted position in which it remains.
- the forming mandrel 16 is fastened in a dome box 17 (compare the enlarged detail of the forming area in FIG Fig. 2 ), which in turn is slidably inserted into a Domschlitten 18.
- the Domschlitten 18 is vertically (perpendicular to the wire 10) in the w- direction movable, so that the Umformdom 16 can always be positioned directly on the already wound wire.
- the dome box 17 in turn can be moved in the x- direction to and from the rear (also perpendicular to the wire 10), both traversing directions in Fig. 2 indicated by arrows.
- a knife 21 for separating a spring produced (if it is worked in the 2-finger system) is provided.
- a knife 21 is used only at the upper cutting gate 20, which is designed so that it separates the wire directly at the outlet 25 of the wire guide 5 (see Fig. 3 ).
- a counter blade 30, which can be applied to the wire guide 5 from below, is provided on the lower cutting slide 20.
- the wire 10 can also be separated by the movement of the dome unit 6 in the w or x direction between the mandrel 26 and the wire guide 5, for which purpose special edge designs are provided on the forming dome 26 and on the wire outlet 25 (not shown in the figures).
- the 3D wind finger 23 is oriented substantially parallel to the wire feed direction s and can be moved in the direction of travel v in the wind plane via the movements of the two horizontal slides 12 in the direction of movement t o , t u or via the movement of the forming slide 13.
- Via an additional drive 24 ( Fig. 1 ) is also an additional movement of the 3D Windefingers 23 perpendicular to the wind plane in the direction y (pivoting) possible.
- the forming tool 15 of the 3D Windefingers 23 can be arbitrarily positioned to the wire outlet 25 of the wire guide 5 or moved around a wire 10 protruding therefrom and then attack them from above, below, behind or front (see also Fig. 3 ).
- the Umformdom 16 is formed in two parts:
- It comprises an upper dome portion 16a and a lower dome portion 16b which are superimposed on each other along a plane perpendicular to the machine frame 2 (in the direction x ) and parallel to the wire feeding direction s and secured together (as appropriate).
- Fig. 3 shows in detail, which is expressly referred to, in the lower dome portion 16b an upwardly open guide groove 27 is formed, which is parallel to the wire feed direction s and in cross-section the wire diameter d (see. Fig. 7 and 9) is adapted.
- the guide groove 27 is separated on its side facing away from the machine frame 2 side of the local outer surface 31 of the lower Domabiteses 16 b by a nose 29, the z. B. the manufacture of a bent from the leg of a spring allows (see also the illustration of FIGS. 9 and 10 or the Figs. 11A to 11K ).
- a flat boundary wall 32 is formed, which constitutes the upper boundary surface of the nose 29 and connects the upper end of the outer side leg of the guide groove 27 with the outer surface 31 of the lower Domabêtes 16b.
- the width B of the upper boundary wall 32 is, as well Fig. 6 (left illustration) recognizable, larger than the diameter of the wire.
- the depth T of the guide groove 27 is slightly larger than the diameter of the wire.
- the lower surface of the upper dome portion 16a projects beyond the guide groove 27 in the lower dome portion 16b by projecting over the upper surface of the latter toward the front.
- the upper dome portion 16a is also provided with a rounded, in particular arc-shaped curved portion 35, with which the supplied wire 10 can be bent in a corresponding plane.
- the circular-arc-shaped bending surface 35 used here could also be mounted on the deformation dome 16 but also in a different orientation, such that the axis of curvature A of the bending surface 35 in the longitudinal center plane MM (see FIG. Fig. 7 ) of the guide groove 27 or offset parallel to this.
- the bending axis A of the curvature surface 35 is perpendicular to the wire feed direction s and perpendicular to the machine frame 2 (ie parallel to the axis x ).
- the bending surface 35 extends as such Fig. 3 shows, circular over about a quarter of a quadrant away, so runs almost over the entire length L of the Umformdomes 16, seen in Drahtzu Foodurgi s , and indeed at the front end portion of the upper Domabiteses 16a, as in Fig. 6 is shown.
- This opening 46 which extends over the entire length L of the Umformdomes 16 (seen in Drahtzu slaughter s ) has at its narrowest cross section, which is at the beginning of the length L directly adjacent to the outlet 25 of the wire guide 5, a width h , the so is great that the conveyed wire 10, taking into account its diameter d introduced from the outside into it and then introduced into the guide groove 27, all this required relative movements by the movement of the Umformdomes 16 in the directions w and x of the dome 16 relative to the wire 10 can be performed.
- Fig. 4 to 8 show, seen in schematic view from the front of the mandrel 16 forth against the Drahtzu Foodurgi s , representations of different embodiments of the Umformdom 16. Here are indicated by dotted lines possible positions of the wire 10 for bending and with arrows possible bending directions.
- Fig. 4 is a one-piece embodiment of the mandrel 16 is shown, in which an L-shaped channel 33 is recessed, which opens at the outside of the Umformdomes 16 in the opening 46 through which a wire inserted and in the up here, the guide groove 27 forming Leg of the channel 33 can be introduced. Dash-dotted different positions of a introduced into the channel 33 wire are shown, for each of these different wire positions are indicated by small arrows, the possible bending directions.
- Fig. 5 shows a similar mandrel 16, which is here, however, formed in two parts with an upper dome portion 16a and a lower dome portion 16b.
- the upper illustration shows a view like the one in Fig. 1
- the lower diagram shows a top view of the lower dome section 16b from above (with the upper dome section 16a removed).
- the two dome portions 16a and 16b together again form an L-shaped channel 33, in which this time, however, the leg of the L-shaped channel 33 forming the guide groove 27 runs downwards.
- the guide groove 27 is, viewed in the insertion direction of the wire, a rounded portion 35 'upstream of a bending surface, the bending axis parallel to the longitudinal center plane MM (see. Fig. 7 ) of the guide groove 27 is located and simplifies the winding of spring bodies.
- Fig. 6 also shows a two-part forming mandrel 16 having an upper dome portion 16a and a lower dome portion 16b. In this embodiment, it is the same as in the Fig. 1 to 3 as well as 9 to 11 K is shown.
- the bending portion with the circular bending surface 35 is rounded upwards as is Fig. 3 or the FIGS. 9 and 10 is well apparent, with the right representation of the Fig. 6 shows the front view of the upper Umformdomabêtes 16 a (view from the left in the left illustration).
- FIGS. 7 and 8 now each show two-part forming dome 16 with closing function:
- the upper dome portion 16a and the lower dome portion 16b are swingably scissored toward each other about a rotation axis 36 (via a mechanism not shown).
- the closed position (left illustration of the Fig. 7 ) is the wire in a wire guide channel 27 with a closed cross-section, so that the wire is completely enclosed in this closed position of the Umformdomes 16 while passing through it.
- the upper dome portion 16a overlaps on its outside (in Fig. 7 : left) with a downwardly projecting nose 37, the outer surface 31 of the lower mandrel portion 16 b, in which the guide channel 27 is formed.
- the lugs 37 and 29 are mutually supported in the closed position of the forming mandrel 16 outwardly, whereby an increased stiffness when bending to from (ie to the left in Fig. 7 ) is achieved.
- the upper dome portion 16a and the lower dome portion 16b are in the open position (right-hand illustration in FIG Fig. 8 ) no longer connected. Rather, to create the opening 46 for access into the guide groove 27, the two dome portions 16 a and 16 b parallel, in unchanged relative orientation to each other, moved apart, which also by simple mechanisms (such as toggle, spreaders or a Curve control, but also by motor drives, not shown in the figure) can be made and the skilled person a suitable mechanism or drive is familiar.
- the upper dome portion 16a is composed of two interconnected members 38 (dome portion 1) and 39 (dome portion 2). This can z. B. a rounded bending surface 35 "o. ⁇ . Also be realized in a center piece of the Umformdomes 16.
- Umformdomes 16 in a multi-part form simplifies the production of the individual mandrel parts 16a, 16b, 38 and 39 and allows a change in the shape of the channel 33 and the mold surfaces 28 and 35 by the replacement of one of the mandrel portions 16a, 16b or a mandrel part 38 and 39 respectively.
- the Umformdom 16 of the FIGS. 7 and 8 can also be designed as a gripper, which can grip and position the wire 10, a leg or the spring body, which results in a further possibility of using such a mandrel unit.
- the forming mandrel 16 is also made movable in the feed direction s of the wire and the depth T of the guide groove 27 is chosen slightly smaller than the wire diameter d to 16a and 16b in the closed position of both mandrel sections to achieve a retention of the wire between them.
- the installation direction of the guide channel 27, namely z. B. upwards (as in Fig. 4 ) or down (as in FIGS. 5 and 6 ), is arbitrary and depending on the application or desired spring shape individually selectable.
- FIGS. 9 and 10 show the forming elements Fig. 3 in a state of bending a forward leg 40 from two different perspectives: Fig. 9 shows a perspective view obliquely from the front, while Fig. 10 is a perspective view of the arrangement obliquely from behind.
- the wire 10 runs in the guide groove 27 and is bent over a corresponding recess 41 on the forming tool 15 during a movement thereof forward on the nose 29.
- the Figs. 11A and 11B show a state in which the wire 10 has been transported beyond the forming dome 16 by the wire guide 5 and the guide groove of the lower dome portion 16b.
- a movement of the forming tool 15 in the direction of the Umformdom 16 and from top to bottom (movements along the axes of movement t and v ) of the wire 10 at the rear edge of the mandrel 16 (namely at its lower dome portion 16 b) is bent and thus a first angled leg 44 made.
- the forming tool 15 is moved away to the right of the wire 10, guided around the rear of this, lowered and placed on the wire 10 again from below.
- the wire 10 has been advanced for a further distance, the forming mandrel 16 is lowered and moved backwards to apply the rounded bending surface 35 to the wire 10 (position according to FIGS Figs. 11C and 11D ).
- a spring body 47 is generated by winds.
- the pitch means 8 can be moved perpendicular to the wire 10 to produce the spacing between the individual turns Figs. 11E and 11F shown.
- the forming tool 15 is moved away from the wire 10, guided around the rear around this and positioned from behind in the interior of the spring body 47. Now, the second leg 44 is bent by activating the wire feed and subsequent lowering of the forming tool 15. This turn can either again (as at the beginning) in the guide groove 27 of the Umformdomes 16 or on the nose 29 done (see. Figs. 11G and 11H ).
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Abstract
Description
Die Erfindung bezieht sich auf eine Federherstellungsmaschine mit einem Maschinengestell, auf dem ein Drahteinzug und eine Drahtführung zur Zuführung eines Drahtes in einer Zuführrichtung, ferner ein der Drahtführung nachgeschalteter, senkrecht zum zugeführten Draht sowohl in Höhenrichtung, als auch in Richtung senkrecht zum Maschinengestell verfahrbarer Dom und nach diesem ein parallel zur Drahtzuführrichtung sowie in zwei zueinander und jeweils zur Drahtzuführrichtung senkrechten Richtungen verfahrbares Umformwerkzeug angebracht sind.The invention relates to a spring manufacturing machine with a machine frame on which a wire feed and a wire guide for feeding a wire in a feed direction, further downstream of the wire guide, perpendicular to the supplied wire in both the height direction and in the direction perpendicular to the machine frame movable dome and according to this a parallel to the wire feed direction as well as in two mutually and in each case to the wire feed direction movable directions movable forming tool are mounted.
Zur Herstellung von Druckfedern sind unterschiedliche Arten von entsprechenden Maschinen bekannt. Dabei unterscheidet man im wesentlichen zwischen Federherstellungsmaschinen mit 1-Finger-System, d. h. ein bewegbarer Windefinger formt den Draht zu einer Feder, und Maschinen mit 2-Finger-System (zwei bewegbare Windefinger formen den Draht zu einer Feder).For the production of compression springs different types of corresponding machines are known. A distinction is essentially between spring manufacturing machines with 1-finger system, d. H. a movable wind finger shapes the wire into a spring, and machines with a 2-finger system (two movable wind fingers form the wire into a spring).
Unter diesen bekannten Maschinen sind die mit dem 1-Finger-System besonders flexibel einsetzbar und können ein großes Spektrum an Federformen abdecken. Allerdings ist die Genauigkeit der von solchen Maschinen hergestellten Federn wie auch die Stückleistung der Maschinen selbst gegenüber den 2-Finger-System-Maschinen meist schlechter.Among these known machines, those with the 1-finger system are particularly flexible and can cover a wide range of spring shapes. However, the accuracy of the springs produced by such machines as well as the performance of the machine itself is usually worse than the 2-finger system machines.
Die Maschinen mit 2-Finger-System eignen sich wiederum nur für die Herstellung reiner Schraubenfedern ohne abgewinkelte Schenkel, da der Draht nach einmaligem Anfahren stets in den Drahtführungsrillen der Windefinger positioniert bleibt. Mit dem 2-Finger-System können größere Stückzahlen und genauere Federgeometrien als mit dem 1-Finger-System hergestellt werden.The machines with 2-finger system are in turn suitable only for the production of pure coil springs without angled legs, since the wire always remains positioned after a single start in the wire guide grooves of the wind finger. With the 2-finger system, larger quantities and more accurate spring geometries than with the 1-finger system can be produced.
Aus der
Die aus der
Eine weitere nach dem 1-Finger-System arbeitende Federherstellungsmaschine, bei der das Windewerkzeug sogar in drei zueinander senkrechten Richtungen verfahrbar ist, wird in der
Es ist noch eine Vielzahl von Federherstellungsmaschinen, die im 1-Finger-System arbeiten, bekannt, bei denen das Umformwerkzeug in unterschiedlicher Weise betätigt und bewegt wird (
Die
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine Federwindemaschine, die normalerweise im 2-Finger-System nur zur Herstellung reiner Schraubenfedern (Druckfedern) geeignet ist, so zu verbessern, daß sie auch zur Herstellung einfacher Schenkelfedern im 1-Finger-System eingesetzt werden kann.Proceeding from this, the present invention seeks to improve a spring coiling machine, which is normally suitable only in the 2-finger system for producing pure coil springs (compression springs), so that they are also used for the production of simple leg springs in 1-finger system can.
Erfindungsgemäß wird dies bei einer Federherstellungsmaschine der eingangs genannten Art dadurch erreicht, daß der Dorn einen Drahtführungskanal aufweist, der im Dom in einem Abstand von dessen dem Maschinengestell abgewandter äußeren Seitenwand ausgebildet ist, durch den der zugeführte Draht durch den Dorn zum Umformwerkzeug geführt wird, und daß der Dom ferner eine Öffnung zum Einführen des Drahtes in den Drahtführungskanal umfaßt.According to the invention this is achieved in a spring manufacturing machine of the type mentioned above in that the mandrel has a wire guide channel which is formed in the dome at a distance from the machine frame facing away from the outer side wall, through which the supplied wire is passed through the mandrel to the forming tool and that the mandrel further comprises an opening for inserting the wire into the wire guiding channel.
Dadurch, daß bei der Erfindung der Dorn in einer zur Drahtvorschubrichtung senkrechten Ebene sowohl in Richtung oben-unten, wie auch in Richtung vorne-hinten verfahrbar ist, und durch den Einsatz eines in zwei zueinander und jeweils zur Drahtzuführrichtung senkrechten Richtungen verfahrbaren Umformwerkzeugs ("3D-Windefinger") wird neben dem Winden auch das Biegen des Drahtes in jede beliebige Richtung (oben-unten, vorne-hinten) durchführbar. Damit wird die Herstellung von Schenkelfedern mit nahezu beliebigen Schenkelstellungen und Schenkelformen möglich. Auch die Herstellung von nach vorne abgebogenen Schenkeln kann ohne den Einsatz zusätzlicher Werkzeugeinheiten oder Werkzeugschiebem erfolgen. Gleichzeitig bleibt die Möglichkeit zur Herstellung hochpräziser Federn mit großer Stückleistung im 2-Finger-Windeverfahren erhalten.Characterized in that in the invention, the mandrel in a direction perpendicular to the wire feed direction plane both in the top-bottom, as well as in the front-back direction, and by the use of a movable in two mutually and in each case to the wire feed direction movable forming tool ("3D -Windefinger ") is in addition to the winds and the bending of the wire in any direction (top-bottom, front-back) feasible. Thus, the production of leg springs with almost any leg positions and Leg shapes possible. Also, the production of forward bent legs can be done without the use of additional tool units or Werkzeugschiebem. At the same time, the possibility of producing high-precision springs with high unit performance in the 2-finger wind method is maintained.
Durch die Erfindung kann eine konventionelle Federwindemaschine, die nach dem 2-Finger-System arbeitet, unkompliziert auf das 1-Finger-System umgerüstet werden. Dabei läßt sich durch den Austausch der Umformeinheit, der Domeinheit und ggf. der Schneidmesser sowie der Drahtführung das auf der Maschine herstellbare Produktspektrum insgesamt ganz erheblich vergrößern. Der durch die Erfindung erreichte wirtschaftliche Nutzen ist besonders bemerkenswert.By the invention, a conventional spring coiling machine, which operates on the 2-finger system, can be easily converted to the 1-finger system. The exchange of the forming unit, the dome unit and possibly the cutting blade and the wire guide can increase the overall product range producible on the machine quite considerably. The economic benefits achieved by the invention are particularly remarkable.
Bei der erfindungsgemäßen Federherstellungsmaschine wird ganz besonders bevorzugt der Drahtführungskanal in Form einer Führungsnut ausgebildet, die, erneut bevorzugt, eine Nuttiefe hat, die mindestens dem Durchmesser des zugeführten Drahtes entspricht, so daß dieser beim Durchlauf durch die Führungsnut nicht aus ihr herausragt. Dies bietet die Möglichkeit, den Drahtzuführungskanal auch mit einem geschlossenen Querschnitt auszuführen, der zur Ausbildung der Öffnung zum Einführen des Drahtes in geeigneter Weise geöffnet werden kann.In the spring manufacturing machine according to the invention, the wire guide channel is most preferably formed in the form of a guide groove, which, again preferably, has a groove depth which corresponds at least to the diameter of the supplied wire, so that it does not protrude from it as it passes through the guide groove. This offers the possibility of executing the wire feed channel also with a closed cross-section, which can be opened to form the opening for inserting the wire in a suitable manner.
Ist der Drahtführungskanal in Form einer Führungsnut mit einem nicht geschlossenem, sondern einseitig geöffnetem Querschnitt, ausgebildet, ist es von besonderem Vorteil, wenn die Führungsnut an ihrem vom Maschinengestell abgewandten Seitenschenkel über eine von dessen Ende aus senkrecht zur Längsmittelebene des Drahtführungskanals und parallel zur Drahtzuführrichtung verlaufende ebene Begrenzungswand mit der äußeren Seitenwand des Domes verbunden ist, wobei vorzugsweise diese ebene Begrenzungswand, senkrecht zur Drahtzuführrichtung, eine Breite aufweist, die größer als der Drahtdurchmesser ist.If the wire guide channel in the form of a guide groove with a non-closed, but unilaterally open cross-section formed, it is particularly advantageous if the guide groove on its side facing away from the machine frame side legs extending from one end perpendicular to the longitudinal center plane of the wire guide channel and parallel to the wire feed direction plane boundary wall is connected to the outer side wall of the dome, wherein preferably this planar boundary wall, perpendicular to the wire feed direction, has a width which is greater than the wire diameter.
Eine weitere vorteilhafte Ausgestaltung der Erfindung besteht auch darin, daß die Öffnung zum Einführen des Drahtes in den Drahtführungskanal direkt neben der Begrenzungswand verläuft und sich über die gesamte Länge des Dornes in Drahtzuführrichtung hinweg erstreckt. Bevorzugt weist dabei diese Öffnung senkrecht zur ebenen Begrenzungswand eine Öffnungsweite auf, die dem Drahtdurchmesser entspricht oder geringfügig größer als dieser ist, so daß von der Außenseite her ein leichtes Durchführen des Drahtes durch die Öffnung und dessen Einführen in den Drahtführungskanal unschwer möglich ist.A further advantageous embodiment of the invention also consists in that the opening for inserting the wire into the wire guide channel runs directly next to the boundary wall and extends over the entire length of the mandrel in the wire feed direction. Preferably, this opening has an opening perpendicular to the plane boundary wall, which corresponds to the wire diameter or slightly larger than this, so that from the outside easy passage of the wire through the opening and its insertion into the wire guide channel is easily possible.
Vorteilhafterweise wird bei der erfindungsgemäßen Federherstellungsmaschine für den Fall, daß der Drahtführungskanal als Führungsnut ausgebildet ist, deren Ausgestaltung so vorgenommen, daß die Längsmittelebene der Führungsnut senkrecht zur ebenen Begrenzungswand verläuft.Advantageously, in the spring manufacturing machine according to the invention for the case that the wire guide channel is formed as a guide, whose configuration so made that the longitudinal center plane of the guide extends perpendicular to the flat boundary wall.
In einer anderen, vorteilhaften Ausgestaltung der erfindungsgemäßen Fedefierstellungsmaschine ist der Dom zweiteilig aufgebaut und umfaßt einen oberen sowie einen unteren Domabschnitt. Bevorzugt sind dabei beide Domabschnitte zur Schaffung der Öffnung zum Einführen des Drahtes in den Drahtführungskanal aus einer geschlossenen Stellung, in welcher der in einem der beiden Domabschnitte ausgebildete und zur Trennfläche zwischen beiden Domabschnitten hin offene Drahtführungskanal vom anderen Domabschnitt vollständig überdeckt und verschlossen ist, in eine geöffnete Stellung verbringbar, in welcher der Drahtführungskanal geöffnet ist und die Öffnung zum Einführen des Drahtes in ihn zwischen beiden Domabschnitten ausgebildet wird. Bei dieser erfindungsgemäßen zweiteiligen Ausgestaltung des Domes in zwei Domabschnitte ist die Möglichkeit geschaffen, die Öffnung zum Einlegen des Drahtes in den Drahtführungskanal nur dann auszubilden, wenn der Draht aus dem Drahtführungskanal heraus oder in diesen eingeführt werden soll, ansonsten aber durch Aufeinanderlegen beider Domabschnitte für die Drahtführung einen geschlossenen Kanalquerschnitt zu haben, was der offenen Ausgestaltung des Drahtführungskanals im Rahmen einer einseitig stets offenen Führungsnut vielfach vorzuziehen ist.In another advantageous embodiment of the invention Fedefierstellungsmaschine the dome is constructed in two parts and includes an upper and a lower dome portion. Both dome sections for creating the opening for inserting the wire into the wire guide channel are preferred from a closed position in which the wire guide channel formed in one of the two dome sections and completely open to the interface between both dome sections is completely covered and closed by the other dome section opened position in which the wire guide channel is opened and the opening for inserting the wire is formed in it between the two Domabschnitten. In this two-part embodiment of the dome according to the invention in two dome sections, the possibility is created to form the opening for inserting the wire in the wire guide channel only when the wire from the wire guide channel out or in this is to be introduced, but otherwise by juxtaposing both Domabschnitte for Wire guide to have a closed channel cross-section, which is often preferable to the open configuration of the wire guide channel in the context of a one-sided always open guide.
Bei dieser zweiteiligen Ausgestaltung des Domes besteht eine bevorzugte Ausgestaltung auch darin, die beiden Domabschnitte um eine gemeinsame Gelenkstelle zueinander verschwenkbar und dabei scherenförmig aufklappbar auszubilden, so daß zur Schaffung der Öffnung zum Einführen (oder Herausführen des Drahtes) die beiden Domabschnitte aufgeklappt werden können und damit der gewünschte Zugang zum Drahtführungskanal geschaffen ist. Nach erfolgtem Einlegen oder Herausführen des Drahtes werden jedoch die beiden Domabschhitte wieder verschlossen und damit wieder ein geschlossener Drahtführungskanal erreicht.In this two-part design of the dome, a preferred embodiment is also the two dome sections about a common hinge pivot each other and form scissor-shaped hinged, so that the creation of the opening for insertion (or lead out of the wire), the two Domabschnitte can be opened and thus the desired access to the wire guide channel is created. After the insertion or removal of the wire, however, the two Domabschhitte be closed again and thus again achieved a closed wire guide channel.
Eine andere bevorzugte Ausgestaltung bei der zweiteiligen Ausbildung des Domes besteht aber auch darin, daß beide Domabschnitte zur Einnahme der geöffneten Stellung unter Beibehaltung ihrer Ausrichtung, somit parallel zueinander ausgerichtet, auseinander bewegbar sind.However, another preferred embodiment in the two-part design of the dome is also that both Domabschnitte to take the open position while maintaining their orientation, thus aligned parallel to each other, are apart movable.
Vorteilhaft ist bei der zweiteiligen Ausbildung des Domes ferner auch noch, wenn der Domabschnitt, in dem der Drahtführungskanal in Form einer Führungsnut ausgebildet ist, in der geschlossenen Stellung des Domes an dessen Außenseite von einer vom anderen Domabschnitt vorragenden Nase überdeckt wird, die in der geschlossenen Stellung gegen die äußere Begrenzungsfläche des den Drahtführungskanal Enthaltenden Dornabschnittes, letzteren überdeckend, flächig anliegt. Dadurch wird eine erhöhte Steifigkeit beim Biegen nach vorne geschaffen.It is also advantageous in the two-part design of the dome even if the dome portion, in which the wire guide channel is formed in the form of a guide, is covered in the closed position of the dome on the outside of a protruding from the other dome portion nose in the closed Position against the outer boundary surface of the wire guide channel containing mandrel portion, the latter overlapping, flat rests. This creates an increased stiffness when bending forward.
Eine weitere bevorzugte Ausgestaltung der erfindungsgemäßen Federherstellungsmaschine besteht auch darin, daß am Dom zusätzlich eine kreisbogenförmige Biegefläche zur Biegeanlage des zugeführten Drahtes ausgebildet ist, deren Krümmungsachse senkrecht zur Zuführrichtung des Drahtes liegt, wobei, bevorzugt, die Biegefläche in einer Richtung senkrecht zur Längsmittelebene des Drahtführungskanals versetzt am Dom angebracht ist. Dabei wird vorteilhafterweise die Krümmungsachse der Biegefläche so gelegt, daß sie entweder senkrecht oder parallel zur Längsmittelebene des Drahtführungskanals liegt.A further preferred embodiment of the spring manufacturing machine according to the invention also consists in that the dome additionally a circular arc-shaped bending surface is formed to the bending system of the supplied wire whose axis of curvature is perpendicular to the feed direction of the wire, wherein, preferably, the bending surface in a direction perpendicular to the longitudinal center plane of the wire guide channel attached to the cathedral. The bending axis of the bending surface is advantageously placed so that it is either perpendicular or parallel to the longitudinal center plane of the wire guide channel.
Eine ganz besonders bevorzugte Ausbildung der Erfindung besteht auch darin, daß bei zweiteiliger Ausbildung des Dornes, wenn beide Teile aus einer geschlossenen in eine geöffnete Stellung (und umgekehrt) verbringbar sind, die Tiefe der Führungsnut etwas kleiner als der Durchmesser des Drahtes gewählt wird und zudem der die beiden Domabschnitte umfassende Dom auch noch in Zuführrichtung des Drahtes (und in Gegenrichtung) verfahrbar ist. Damit läßt sich der Dom gleichzeitig auch noch als Greifer für den Draht verwenden, der in der geschlossenen Stellung beider Domabschnitte zwischen diesen verklemmt festgehalten ist.A very particularly preferred embodiment of the invention consists in the fact that in two-part design of the mandrel, when both parts from a closed to an open position (and vice versa) can be brought, the depth of the guide is chosen slightly smaller than the diameter of the wire and also the cathedral comprising the two dome sections can also be moved in the feed direction of the wire (and in the opposite direction). Thus, the dome can also be used as a gripper for the wire at the same time, which is held jammed in the closed position of both Domabschnitte between them.
Die Erfindung wird nachfolgend anhand der Zeichnungen im Prinzip beispielshalber noch näher erläutert. Es zeigen:
-
Fig.1 eine perspektivische Ansicht (von schräg vorne) auf eine erfindungsgemäße Federherstellungsmaschine (Federwindemaschine), eingerichtet auf das 1-Finger-System; -
Fig. 2 einen vergrößerten (perspektivischen) Ausschnitt des Umformbereiches der Federherstellungsmaschine gemäßFig. 1 ; -
Fig.3 eine perspektivische, schematische Darstellung der an der Umformung bei der Maschine gemäßFig. 1 beteiligten konstruktiven Elemente (dargestellt mit Zwischenräumen zwischen den einzelnen Elementen); -
Fig. 4 bis 8 Prinzipdarstellungen verschiedener Ausführungsformen des Domes in unterschiedlichen Ansichten; -
Fig.9 eine stark vergrößerte perspektivische Darstellung (nur) der an der Umformung beteiligten Elemente (entsprechendFig. 3 ) bei Beginn der Herstellung einer Schenkelfeder, in Drahtzustellrichtung gesehen, von außen und schräg vorne: -
Fig. 10 die Darstellung ausFig. 9 , aber, in Drahtzuführrichtung gesehen, von außen und schräg hinten, sowie -
Fig.11A bis 11K die an der Umformung beteiligten Elemente entsprechend denFig. 9 und 10 zur Darstellung des Ablaufs bei der Herstellung einer Schenkelfeder, wobei jedes Stadium in zwei Perspektivansichten entsprechend den Ansichten aus denFig. 9 und 10 dargestellt ist.
-
Fig.1 a perspective view (obliquely from the front) on a spring manufacturing machine according to the invention (spring coiling machine), set up on the 1-finger system; -
Fig. 2 an enlarged (perspective) section of the forming area of the spring manufacturing machine according toFig. 1 ; -
Figure 3 a perspective, schematic representation of the forming in the machine according toFig. 1 involved constructive elements (shown with spaces between the individual elements); -
Fig. 4 to 8 Schematic representations of various embodiments of the dome in different views; -
Figure 9 a greatly enlarged perspective view (only) of the elements involved in the transformation (correspondingFig. 3 ) at the beginning of the production of a leg spring, seen in the wire direction, from the outside and diagonally in front: -
Fig. 10 the presentationFig. 9 , but, seen in Drahtzuführrichtung, from the outside and diagonally behind, as well -
11A to 11K the elements involved in the transformation according to theFIGS. 9 and 10 to illustrate the process in the production of a leg spring, each stage in two perspective views corresponding to the views of theFIGS. 9 and 10 is shown.
Da der Aufbau und die Funktionsweise der Richteinheit 3 sowie des Drahteinzuges 4 an sich bekannt sind, soll hierauf nur noch ganz kurz eingegangen werden:Since the structure and operation of the
Ein Draht 10 (vgl.
Gleichermaßen ist auch die Steigungseinrichtung 8 an sich bekannt; sie ermöglicht es, durch eine Bewegung nach außen hin (senkrecht zur Drahtachse und senkrecht vom Maschinengestell 2 weg nach vorne) eine entsprechend gewünschte Steigung zwischen den einzelnen Windungen der Feder zu erzeugen. Die Wirkungsweise und der Einsatz solcher Steigungseinrichtungen ist dem Fachmann bekannt, so daß nicht noch weiter hierauf eingegangen werden muß.Likewise, the
Am Maschinengestell 2 sind weiterhin zwei Horizontalschlitten 12, nämlich ein oberer und ein unterer Horizontalschlitten, angebracht, die unabhängig voneinander parallel zur Drahtzuführungsrichtung s in Richtung t u, t0 verfahren werden können.On the
Auf den Horizontalschlitten 12 sind zwei Umformschieber 13 (je einer auf jedem Horizontalschlitten 12) schräg vorgesehen, wie dies aus
Im 2-Finger-System ist jeder Umformschieber 13 an seinem vorderen Ende mit einem Umformwerkzeug 15 ausgerüstet, während bei der in
Der bei 1-Finger-Umstellung nicht benötigte (obere) Umformschieber 13 des 2-Finger-Systems wird bei der Umstellung auf das 1-Finger-System abmontiert oder in eine weggefahrene Stellung verbracht, in der er verbleibt.The (upper) Umformschieber 13 of the 2-finger system, which is not required for 1-finger conversion, is removed during the conversion to the 1-finger system or moved to a retracted position in which it remains.
Der Umformdorn 16 ist in einem Domkasten 17 befestigt (vgl. die vergrößerte Detaildarstellung des Umformbereiches in
Am Domschlitten 18 sind zwei über jeweils eine Kurbelwelle 19 betätigte Schnittschieber 20 angebracht, an welchen jeweils ein Messer 21 zum Abtrennen einer erzeugten Feder (falls im 2-Finger-System gearbeitet wird) vorgesehen ist. Bei der auf 1-Finger-System umgestellten Federherstellungsmaschine gemäß
Der 3D-Windefinger 23 ist im wesentlichen parallel zur Drahtzuführrichtung s ausgerichtet und kann über die Bewegungen der beiden Horizontalschlitten 12 in Bewegungsrichtung t o,t u bzw. über die Bewegung des Umformschiebers 13 in Richtung v in der Windeebene bewegt werden. Über einen zusätzlichen Antrieb 24 (
Wie aus der Darstellung der
Er umfaßt einen oberen Domabschnitt 16a und einen unteren Domabschnitt 16b, die längs einer Ebene, welche senkrecht zum Maschinengestell 2 (in Richtung x ) sowie parallel zur Drahtzuführungsrichtung s verläuft, aufeinander liegen und aneinander (in geeigneter Weise) befestigt sind.It comprises an
Wie
Durch die Bewegungsmöglichkeiten entlang der Bewegungsachsen w und x des Umformdornes 16 kann dieser so zum Draht 10 (
Gemäß
Die Breite B der oberen Begrenzungswand 32 ist, wie gut aus
Wie
An seinem vorderen Ende ist der obere Domabschnitt 16a außerdem mit einem abgerundeten, insbesondere kreisbogenförmig gekrümmten Abschnitt 35 versehen, mit dem der zugeführte Draht 10 in einer entsprechenden Ebene gebogen werden kann.At its front end, the
Die hier eingesetzte kreisbogenförmige Biegefläche 35 könnte am Umformdom 16 aber auch in einer anderen Ausrichtung angebracht sein, etwa so, daß die Krümmungsachse A der Biegefläche 35 in der Längsmittelebene M-M (vgl.
Bei der Ausführung der Umformdomes 16, wie sie in den Figuren gezeigt ist, liegt die Biegeachse A der Krümmungsfläche 35 senkrecht zur Drahtzuführungsrichtung s und senkrecht zum Maschinengestell 2 (also parallel zur Achse x ).In the embodiment of the
Bei der gezeigten Ausführungsform der Biegefläche 35 erstreckt sich diese, wie
Es besteht jedoch durchaus auch die Möglichkeit zu einer anderen Ausrichtung und Anordnung, wie eine solche z. B. aus den
Bei dem in
Diese Öffnung 46, die sich über die gesamte Länge L des Umformdomes 16 (in Drahtzuführrichtung s gesehen) erstreckt, hat an ihrem engsten Querschnitt, der zu Beginn der Länge L direkt neben dem Auslaß 25 der Drahtführung 5 liegt, eine Weite h , die so groß ist, daß der angeförderte Draht 10 unter Berücksichtigung seines Durchmessers d von außen in sie eingeführt und dann in die Führungsnut 27 eingebracht werden kann, wobei alle hierfür erforderlichen Relativbewegungen durch die Bewegung des Umformdomes 16 in die Richtungen w bzw. x des Domes 16 relativ zum Draht 10 ausgeführt werden können.This
Die
In
Die in den Figuren geschilderten Beispiele zeigen die Herstellung rechtsgewundener Federn. Selbstverständlich besteht bei Verwendung der Erfindung gleichermaßen auch die Möglichkeit zur Herstellung linksgewundener Federn, auch wenn dies nicht in den Figuren gezeigt ist. Um linksgewundene Federn herzustellen, ist es dann nur erforderlich, den Umformdom 16 und die Drahtführung 5 durch einen neuen Umformdorn und eine neue Drahtführung zu ersetzen, wobei jedes dieser Elemente in einer zu den in den Figuren gezeigten Darstellungen um eine senkrecht zur Längsmittelebene M-M und durch die Längsmittelachse des Drahtführungskanals (Führungsnut 27) verlaufende Ebene gespiegelten Anordnung ausgeführt ist.The examples described in the figures show the production of right-wound springs. Of course, when using the invention, it is equally possible to produce left-wound springs, even if this is not shown in the figures. Around To produce links wound springs, it is then only necessary to replace the
Die
Bei der Ausführungsform gemäß
In dieser geschlossenen Position überdeckt der obere Domabschnitt 16a an seiner Außenseite (in
Aus der geschlossenen Position der linken Darstellung in
Die Nasen 37 und 29 stützen sich in der geschlossenen Stellung des Umformdornes 16 gegenseitig nach außen hin ab, wodurch eine erhöhte Steifigkeit beim Biegen nach vom (also nach links in
In
Hierbei sind der obere Domabschnitt 16a und der untere Domabschnitt 16b in der geöffneten Position (rechte Darstellung in
Zusätzlich ist bei dieser Ausführungsform der obere Domabschnitt 16a aus zwei miteinander verbundenen Elementen 38 (Domteil 1) sowie 39 (Domteil 2) zusammengesetzt. Damit kann z. B. eine abgerundete Biegefläche 35" o. ä. auch in einem Mittelstück des Umformdomes 16 realisiert werden.In addition, in this embodiment, the
Der Aufbau des Umformdomes 16 in mehrteiliger Form vereinfacht die Herstellung der einzelnen Dornteile 16a, 16b, 38 bzw. 39 und ermöglicht eine Veränderung der Form des Kanals 33 bzw. der Formflächen 28 und 35 durch den Austausch eines der Dornabschnitte 16a, 16b oder eines Dornteiles 38 bzw. 39.The construction of the
Durch den Einsatz beweglicher Domabschnitte kann der Umformdom 16 aus den
Die Einbaurichtung des Führungskanals 27, nämlich z. B. nach oben (wie in
Neben der aufgezeigten Ausführung mit einem abgerundeten Domabschnitt 35 bzw. 35' bzw. 35" sind auch viele weitere, mögliche Abwandlungen denkbar. So hat es sich als günstig herausgestellt, wenn z. B. die Stirnfläche des Domes 16 zusätzlich abgeschliffen wird, um für den Draht keinerlei Hindernis darzustellen. Die Stirnfläche ist dabei meist als entsprechende Freiformfläche ohne genaue geometrische Definition ausgeführt.In addition to the embodiment shown with a
Die
Dabei läuft der Draht 10 in der Führungsnut 27 und wird über eine entsprechende Aussparung 41 am Umformwerkzeug 15 bei einer Bewegung desselben nach vorne an der Nase 29 abgebogen.In this case, the
Am Ende der Führungsnut 27 ist der Übergang von dieser in die Biegerichtung nach außen hin durch eine an der Nase 29 angebrachte Abrundung 42 begünstigt.At the end of the
Schließlich sind in perspektivischen Prinzipdarstellungen der verschiedenen Umformelemente in den
Die
Anschließend wird das Umformwerkzeug 15 nach rechts vom Draht 10 weggefahren, hinten um diesen herumgeführt, abgesenkt und von unten wieder an dem Draht 10 angelegt. Gleichzeitig wurde der Draht 10 um ein weiteres Stück vortransportiert, der Umformdorn 16 abgesenkt und ein Stück nach hinten versetzt, um die abgerundete Biegefläche 35 an den Draht 10 anzulegen (Stellung gemäß den
Sodann wird durch ein Anheben des Umformwerkzeuges 15 und durch Aktivierung des Drahtvorschubs ein Federkörper 47 durch Winden erzeugt. Die Steigungseinrichtung 8 kann zur Erzeugung des Abstandes zwischen den einzelnen Windungen senkrecht zum Draht 10 bewegt werden Dieser Zustand ist in den
Nach Fertigstellung des Federkörpers 47 wird das Umformwerkzeug 15 vom Draht 10 weggefahren, hinten um diesen herumgeführt und von hinten im Inneren des Federkörpers 47 positioniert. Nun wird der zweite Schenkel 44 durch Aktivierung des Drahtvorschubes und anschließendes Absenken des Umformwerkzeuges 15 abgebogen. Diese Abbiegung kann entweder erneut (wie zu Beginn) in der Führungsnut 27 des Umformdomes 16 oder aber auf der Nase 29 erfolgen (vgl.
Schließlich wird, wie in den
Anschließend kann der Prozeß zur Herstellung einer neuen Feder wieder beginnen.Subsequently, the process for producing a new spring can begin again.
Claims (17)
- Spring production machine (1) with a machine frame (2) on which are arranged a wire draw-in (4) and a wire guide (5) for feeding a wire (10) in a feed direction (s), in addition a mandrel (16) located downstream of the wire guide (5), said mandrel being able to travel perpendicular to the fed wire (10) both in the height direction (w) and in the direction (x) perpendicular to the machine frame (2), and downstream of it a forming tool (15) which can travel parallel (t) to the wire feed direction (s) and in two directions (y, v) perpendicular to each other and in each case to the wire feed direction (s),
characterised in that the mandrel (16) has a wire guide channel (27), which is constructed in the mandrel (16) at a distance from its outer lateral wall (31) that faces away from the machine frame (2), through which said channel the fed wire (10) can be guided through the mandrel (16) to the forming tool (15) and moreover can be inserted via an opening (46) in the mandrel (16) into the wire guide channel (27). - Spring production machine according to claim 1 characterised in that the wire guide channel is constructed in the shape of a guide groove (27).
- Spring production machine according to claim 2 characterised in that the guide groove (27) has a groove depth (T) which is at least equal to the diameter (d) of the wire (10).
- Spring production machine according to any of claims 2 or 3 characterised in that the guide groove (27) is connected by its side flank that faces away from the machine frame (2) to the outer lateral wall (31) of the mandrel (16) via a flat boundary wall (32) running perpendicularly to the longitudinal mid-plane (M-M) of the wire guide channel (27) and parallel (t) to the wire feed direction (s).
- Spring production machine according to claim 4 characterised in that the flat boundary wall (32), perpendicular to the wire feed direction (s), has a breadth (B) that is greater than the wire diameter (d).
- Spring production machine according to any of claims 4 to 5 characterised in that the opening (46) for inserting the wire (10) into the wire guide channel (27) runs directly next to the boundary wall (32) and extends along the entire length (L) of the mandrel (16) in the wire feed direction (s).
- Spring production machine according to claim 6 characterised in that the opening (46) for inserting the wire (10) into the wire guide channel (27) has an opening height (h) perpendicular to the flat boundary wall (32) which is at least equal to the wire diameter (d).
- Spring production machine according to any of claims 1 to 7 characterised in that the mandrel (16) is assembled in two parts and comprises an upper (16a) and a lower (16b) mandrel section.
- Spring production machine according to claim 8 characterised in that the two mandrel sections (16a, 16b) for creating the opening (46) for inserting the wire (10) into the wire guide channel (27) can be conveyed from a closed position in which the wire guide channel (27) constructed in one of the two mandrel sections (16b) and open towards the separating area between the two mandrel sections (16a, 16b) is completely covered and closed by the other mandrel section (16a) into an open position in which the wire guide channel (27) is opened and the opening (46) is created for inserting the wire (10) into it between the two mandrel sections (16a, 16b).
- Spring production machine according to claim 9 characterised in that the two mandrel sections (16a, 16b) can be pivoted with respect to each other about a common articulated point (36) and thus can be opened with a scissor action.
- Spring production machine according to claim 9 characterised in that the two mandrel sections (16a, 16b) can be moved apart from each other to adopt the opened position while retaining their orientation.
- Spring production machine according to any of claims 9 to 11 characterised in that the mandrel section (16b) in which the wire guide channel (27) is constructed is overlapped on its outer side when in the closed position of the mandrel (16) by a nose (37) projecting from the other mandrel section (16b), said nose in the closed position abutting in a planar manner the outer boundary area (31) of the mandrel section (16b) containing the wire guide channel (27), overlapping it.
- Spring production machine according to any of claims 1 to 12 characterised in that in addition a circular-shaped bending area (35; 35'; 35") is constructed on the mandrel (16) for the bending facility of the fed wire (10), the axis of curvature (A) of the bending area (35; 35'; 35") lying perpendicular to the feed direction (s) of the wire (10).
- Spring production machine according to claim 13 characterised in that the bending area (35; 35'; 35") is arranged offset on the mandrel (16) in a direction perpendicular to the longitudinal mid-plane (M-M) of the wire guide channel (27).
- Spring production machine according to claim 14 characterised in that the axis of curvature (A) of the bending area (35; 35") lies perpendicular to the longitudinal mid-plane (M-M) of the wire guide channel (27).
- Spring production machine according to claim 14 characterised in that the axis of curvature (A) of the bending area (35") lies parallel to the longitudinal mid-plane (M-M) of the wire guide channel (27).
- Spring production machine according to any of claims 9 to 12, or any of claims 13 to 16 insofar as these are related back to any of claims 9 to 12, characterised in that the depth (T) of the guide groove (27) is less than the diameter (d) of the wire (10) and the mandrel (16) can also be moved in the feed direction (s) of the wire (10).
Applications Claiming Priority (1)
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DE102009016768A DE102009016768B3 (en) | 2009-04-07 | 2009-04-07 | Spring manufacturing machine |
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EP2239067A1 EP2239067A1 (en) | 2010-10-13 |
EP2239067B1 true EP2239067B1 (en) | 2011-04-27 |
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JP (1) | JP5255582B2 (en) |
CN (1) | CN101856704B (en) |
AT (1) | ATE507020T1 (en) |
DE (2) | DE102009016768B3 (en) |
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Families Citing this family (9)
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---|---|---|---|---|
CN102172743A (en) * | 2010-12-24 | 2011-09-07 | 浙江机电职业技术学院 | Core cutter structure of spring coiling machine |
CN102626761B (en) * | 2012-01-04 | 2014-06-04 | 杭州钱江弹簧有限公司 | Torsion spring forming process |
CN103861974A (en) * | 2014-03-18 | 2014-06-18 | 沈阳飞机工业(集团)有限公司 | Special spring manufacturing tooling and special spring manufacturing process |
CN104070124B (en) * | 2014-06-30 | 2016-10-05 | 安庆谢德尔汽车零部件有限公司 | A kind of stabilization spring steel wire guide rail |
CN104057001B (en) * | 2014-06-30 | 2016-08-17 | 安庆谢德尔汽车零部件有限公司 | A kind of many arcs spring steel wire guide rail |
CN105618636B (en) * | 2016-01-25 | 2018-12-28 | 南京艾驰电子科技有限公司 | Method and device for generating alloy wire wiegand effect |
CN107570634A (en) * | 2017-09-04 | 2018-01-12 | 珠海市赛科自动化有限公司 | A kind of medical guiding wire coil winding machine |
JP7258545B2 (en) | 2018-12-28 | 2023-04-17 | 日本発條株式会社 | Coiling machine and manufacturing method of coil spring |
DE202019106145U1 (en) | 2019-11-05 | 2019-11-26 | Wafios Aktiengesellschaft | Forming machine with protective device |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1882243A (en) * | 1932-04-16 | 1932-10-11 | William O Dailey | Apparatus for forming and bending flexible materials |
DE2006843C3 (en) * | 1970-02-14 | 1975-12-11 | Rene Fleurier Perrenoud (Schweiz) | Wire clamping and cutting device on automatic wire bending machines |
JPS61226130A (en) * | 1985-03-30 | 1986-10-08 | Toshikazu Okuno | Coiling machine |
CN1013743B (en) * | 1987-08-01 | 1991-09-04 | 列宁运输机械制造厂 | Device for making springs from wire |
US4873854A (en) * | 1987-10-30 | 1989-10-17 | Sleeper & Hartley Corp. | Computer controlled coiling machine |
CN2081768U (en) * | 1990-09-30 | 1991-07-31 | 浙江省嵊县灵山机械修造厂 | Automatic spring winder |
US5706687A (en) * | 1995-10-18 | 1998-01-13 | Bhs-Torin Inc. | Spring coiling machine |
JP3345344B2 (en) * | 1998-04-03 | 2002-11-18 | 新興機械工業株式会社 | Spring making machine |
JP3735020B2 (en) * | 2000-08-11 | 2006-01-11 | 新興機械工業株式会社 | Spring making machine |
JP2004209527A (en) * | 2003-01-06 | 2004-07-29 | Shinko Kikai Kogyo Kk | Spring manufacturing machine |
JP4125152B2 (en) * | 2003-02-10 | 2008-07-30 | 新興機械工業株式会社 | Spring making machine |
JP3744910B2 (en) * | 2003-02-10 | 2006-02-15 | オリイメック株式会社 | Wire spring forming equipment |
CN2858108Y (en) * | 2006-01-22 | 2007-01-17 | 代军 | Line-spring manufacture machine |
JP4939202B2 (en) * | 2006-12-20 | 2012-05-23 | 新興機械工業株式会社 | Spring making machine |
-
2009
- 2009-04-07 DE DE102009016768A patent/DE102009016768B3/en not_active Expired - Fee Related
-
2010
- 2010-02-10 EP EP10001364A patent/EP2239067B1/en active Active
- 2010-02-10 AT AT10001364T patent/ATE507020T1/en active
- 2010-02-10 DE DE502010000019T patent/DE502010000019D1/en active Active
- 2010-02-25 JP JP2010039886A patent/JP5255582B2/en not_active Expired - Fee Related
- 2010-03-03 TW TW099106097A patent/TW201039940A/en not_active IP Right Cessation
- 2010-03-25 CN CN201010148829.8A patent/CN101856704B/en not_active Expired - Fee Related
Also Published As
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CN101856704A (en) | 2010-10-13 |
TW201039940A (en) | 2010-11-16 |
JP2010240738A (en) | 2010-10-28 |
EP2239067A1 (en) | 2010-10-13 |
DE102009016768B3 (en) | 2010-09-23 |
DE502010000019D1 (en) | 2011-06-09 |
ATE507020T1 (en) | 2011-05-15 |
TWI377097B (en) | 2012-11-21 |
CN101856704B (en) | 2013-06-05 |
JP5255582B2 (en) | 2013-08-07 |
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