US3608349A - Method and apparatus for winding spiral springs - Google Patents

Method and apparatus for winding spiral springs Download PDF

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Publication number
US3608349A
US3608349A US886203A US3608349DA US3608349A US 3608349 A US3608349 A US 3608349A US 886203 A US886203 A US 886203A US 3608349D A US3608349D A US 3608349DA US 3608349 A US3608349 A US 3608349A
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US
United States
Prior art keywords
winding
bands
spring
base plate
supply opening
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
US886203A
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English (en)
Inventor
Rudolf Greiner
Walter Schweizer
Lothar Kiesewetter
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Individual
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Individual
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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0005—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for parts of driving means
    • G04D3/0007—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for parts of driving means for springs
    • 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
    • B21F3/00—Coiling wire into particular forms
    • B21F3/08—Coiling wire into particular forms to flat spiral
    • G—PHYSICS
    • G04—HOROLOGY
    • G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
    • G04D3/00—Watchmakers' or watch-repairers' machines or tools for working materials
    • G04D3/0002—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe
    • G04D3/0035—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the regulating mechanism
    • G04D3/0041—Watchmakers' or watch-repairers' machines or tools for working materials for mechanical working other than with a lathe for components of the regulating mechanism for coil-springs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49579—Watch or clock making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49609—Spring making

Definitions

  • the leading portion of the band is then guided through an axial slit in a winding drum arranged concentrically about the supply opening, so that upon rotation of the drum relative to the base plate, the bands are wound upon themselves to form a convolute spring assembly.
  • the bands are symmetrically discharged from the supply opening either axially or in a uniformly skewed manner. In the latter case, depending on the characteristics of the metal from which the spring bands are formed, the drum is rotated either in the direction of skew or in a direction opposite to the direction of skew.
  • Means are provided for locking the trailing portions of the bands in the supply opening during the winding operation.
  • an enclosed winding drum which comprises a central guide aperture at the bottom of the enclosure and which is provided at the edge of the enclosure with a plurality of guide slits uniformly distributed in the circumferential direction, the number of the guide slits being equal to the number of fastening slits disposed in the winding mandrel.
  • the drum, together with the spring bands spirally coiled therein, is then drawn off the winding mandrel in an upward direction for subsequent thermal treatment as is customary in the art.
  • the winding mandrel is then ready to receive United States Patent O a further winding drum which is likewise initially empty, so that the next set of coil springs can be made in the manner described above.
  • the primary object of the present invention is to provide an improved method and apparatus for winding coil springs wherein a plurality of spring bands extend, during the Winding operation, through the inner space of a winding drum in a concentric symmetrical fashion and are each individually guided by means of corresponding guide slots peripherally disposed within the drum.
  • the spring bands are secured against rotation within the supply opening and are introduced into the inner space of the spring winding drum in a direction either normal to or skewed relative to the opening in the winding face of the base plate.
  • the spiral band winding operation is effected by rotary movement of the winding drum relative to the base plate, the inner end portions of each of the spring bands being initially bent upon discharge from the supply opening about an axis inclined with respect to the longitudinal extension of these spring bands.
  • the inner end portions of the coil springs be severed only after the cempletion of the coiling or winding operation from the spring bands extending through the inlet opening and that, after the removal of the spring housing filled with a set of coil springs, the remaining spring bands which still extend through the inlet opening be further supplied in the lengths necessary for making a new set of coil springs.
  • FIG. 1 is a perspective view of the base plate and the winding drum of a first embodiment of the invention, wherein the spring bands are initially discharged axially from the supply opening disposed in the base plate in a direction extending normal to the intended winding plane;
  • FIG. 2 is a detailed schematic top plan view of the supply opening in the base plate according to FIG. 1, wherein the equally illustrated inner end portions of the spring bands represent different stages at the beginning of the winding operation;
  • FIG. 3 is a top plan view analogous to that of FIG. 2, of a second embodiment of the invention, wherein the spring bands initially emerge from the supply opening in a skewed orientation generally parallel with the intended winding plane;
  • FIG. 4 is a perspective view of the inner end portion of one of the spring bands according to FIG. 3, showing the arising deflection about an inclined axis relative to the winding face of the base plate;
  • FIG. 5 is a top plan view of the inner end portions and the adjacent inner turns of the spirally and telescopically wound spring bands wound in the direction of skew as indicated by the arrow in FIG. 3;
  • FIG. 6 is a top plan view of the inlet opening disposed in the base plate from which the spring bands emerge in a skewed fashion as in FIG. 3, but wound in a direction opposite to the direction of skew;
  • FIG. 7 is a perspective view of the inner end portions of a pair of the spring bands according to FIG. 6, indicating the initial bending deflections of the bands about axes inclined to the winding face;
  • FIG. 8 is a top plan view of the inner end portions and the adjacent inner turns of the spirally wound spring bands formed by the winding operation of FIGS. 6 and 7;
  • FIG. 9 is a perspective view of the base plate and the winding drum in a further embodiment wherein the spring bands emerge from the supply opening in a direction extending normal to the winding plane, as in FIG. 1, said inlet opening comprising a plurality of radially outwardly extending slits for securing the spring bands against rotation, without the aid of an additional clamping member.
  • the construction of the apparatus or device according to FIG. 1 includes a base plate 1 which is secured to a stationary frame or stand.
  • This base plate 1 contains a circular supply opening 2 through which a plurality of spring bands 6 are supplied in a concentric symmetrical manner.
  • spring bands 6 are supplied in a concentric symmetrical manner.
  • FIG. 1 on the other hand, only three of the aforementioned spring bands 6 have been shown for the sake of greater clarity of illustration.
  • the radius of the inlet opening is chosen to be approximately equal to the width of the blades of the spring bands 6.
  • the spring bands 6 needed therefor have, for example, a blade width of 0.2 millimeter and a blade thickness of approximately 0.03 millimeter.
  • the band supply means (not shown) by means of which all of the spring bands 6 are supplied simultaneously through the inlet opening 2 upwardly in a direction extending normal to the upper winding face of the base plate 1.
  • the spring bands 6 conveyed to the feeding device are reeled oif six storage drums which are rotatably connected with the frame.
  • the supply drums are preferably arranged symmetrically in a concentric manner with respect to the axis of the supply opening 2.
  • each of the spring bands 6 Prior to the beginning of each Winding operation, the spring bands 6 are supplied upwardly from the supply opening 2 for a distance at least as great as the length of the spiral springs to be wound. Furthermore, it is advisable and expedient to assure already during this feeding operation that each of the spring bands 6, as viewed from the inlet opening 2, falls outwardly in a radial direction, such as has been indicated in connection with the two spring band pieces or portions 6 directed toward the left in FIG. 1. For the sake of a clearer illustration, the drawing does not shown respectively the full required lengths of the spring band portions but only the inner parts thereof. When the necessary feed of the spring bands 6 has taken place, they are pressed against the periphery of the supply openings 2, by means of a clamping member 10, as shown in FIGS.
  • a pin member 10 which is provided with a conical head and is displaceable in the axial direction of the supply opening 2 serves as the clamping member.
  • the means for axially actuating this clamping member 10 are conventional and have not been shown in detail in the drawing.
  • the base plate ⁇ 1 further contains an annular groove 7 concentrically arranged relative to the supply opening 2 and adapted to .4 receive the free tubular edge portion of the rotary winding drum 3.
  • the winding drum is normally arranged with the edge 4 thereof extending within the annular groove 7 so that each of the radially out wardly directed spring bands 6 extends through a corresponding guide slit 5 without being actually clamped at that time.
  • the spring bands 6 are transferred, in the area or region outside of the inner end portions thereof, into an edgesupported upright position normal to the upper side of the base plate 1, in which the winding operation is terminated.
  • This winding operation is completed when the inner space of the winding drum 3 is filled up to the box edge 4 with interwound coil springs.
  • the leading end portions of the spring bands 6 which initially extended through the guide slits 5 are drawn into the inner space of the spring housing 3 immediately prior to the termination of the winding operation. Only thereafter will the inner end portions of the coil springs be separated from the spring bands 6 projecting through the inlet opening 2.
  • This may be accomplished, for example, by introducing through the guide aperture 9 of the spring housing 3 a corresponding cutting, punching, or boring tool which carries out this separating or severing procedure.
  • the aforementioned separation may also be obtained, however, without the aid of a separate tool simply by further rotating, after the completion of the Winding operation, the already completely filled winding drum 3 in the winding direction.
  • the inner end portions of the coil springs will then automatically be torn off at the point of the deflections being deformed to bends proper. In most cases after the winding operation has been completed the severed end portions of the spring bands 6 emerge from the guide slits 5.
  • the method described hereinbefore may be modified, however, in various ways and thus afiFord further advantages. It may thus be desirable to have the spring bands 6 emerge from the inlet opening 2 in a skewed manner relative to the winding plane defined by the upper yvinding face of the base plate 1, such as has been shown 1n the top plan view of FIG. 3. Such a skewed emergence of the spring bands 6 assures on the one hand that the bands 6 will be arranged automatically in a concentric symmetrical manner without the aid of or recourse to specific measures and will initially be generally parallel with the base plate winding face.
  • the supply opening may have a corresponding conical cross-sectional configuration. There will arise, however, different conditions for the winding operation depending upon the winding direction of the winding drum 3 relative to the base plate 1.
  • each of the bands When the winding direction 8 according to FIG. 3 corresponds with the direction of skew of the spring bands 6 as initially discharged into the winding plane, each of the bands will be bent off at the inner end portion thereof about the axis AA inclined with respect to the longitudinal extension thereof, as shown by way of example in FIG. 4.
  • the coil assembly of FIG. 5 When the winding operation is completed, the coil assembly of FIG. 5 will result for the inner end portions of the spring bands 6 and for the adjacent inner coil spring winding turns, as viewed in the top plan view. Accordingly, the inner deflections of the spring bands 6 are produced to avoid a marked bend, which is particularly desirable when the spring bands 6 are made from nonferrous metals or alloys.
  • the winding direction 8 is opposite to that shown in FIGS. 3 to 5 (i.e., in a direction opposite to the direction of skew of the bands relative to the winding face).
  • the spring bands 6 are twisted according to FIG. 6.
  • each of the spring bands 6 is sharply bent off about the inclined axis AA in a manner similar to a bend or break, according to FIG. 7.
  • the resulting coil assembly is illustrated in FIG. 8.
  • FIG. 9 a modified construction is illustrated which does not require a clamping member 10.
  • the central inlet opening comprises a number of radially outwardly directed slits 2a corresponding to the number and cross-sectional dimensions of the spring bands 6 which are to extend therethrough. It is quite obvious that by virtue of the radial arrangement of the slits, an axial emergence of the spring bands 6 is assured which is secured against rotation with out the aid of any further expedients.
  • Apparatus for winding a coil spring assembly from a plurality of metal bands comprising a base plate (1) having a winding face containing a supply opening through which given lengths of the bands (6) are supplied in a circumferentially spaced symmetrical manner;
  • a winding drum (3) including a tubular portion arranged concentrically relative to the axts of said supply opening, said tubular portion containing a plurality of circumferentially spaced axial guide slots (5), each of said bands immediately following discharge from said supply opening being deformed about an axis (A--A) that is inclined relative to saidwinding face toward a winding position normal to said winding face, the leading portions of said band lengths being then guided in said winding positions radially outwardly through corresponding ones of said guide slots, respectively;
  • Apparatus as defined in claim 2 and further including means for discharging said bands from said supply opening initially in the axial direction relative to said supply opening.
  • Apparatus as defined in claim 2 and further including means for discharging said bands from said supply opening symmetrically in an initially skewed direction relative to the axis of said supply opening and with an orientation generally parallel with the winding face of said base plate.
  • said supply opening comprises a plurality of radially arranged guide slots (2a) through which said bands are supplied, respectively, said bands being locked in said slots upon deformation of said bands about their respective angular bending axes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Wire Processing (AREA)
  • Springs (AREA)
US886203A 1969-01-27 1969-12-18 Method and apparatus for winding spiral springs Expired - Lifetime US3608349A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH117169A CH502141A (de) 1969-01-27 1969-01-27 Verfahren zum Wickeln von nicht für die Zeitmesstechnik bestimmten Spiralfedern und Einrichtung zur Durchführung des Verfahrens

Publications (1)

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US3608349A true US3608349A (en) 1971-09-28

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ID=4204141

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Application Number Title Priority Date Filing Date
US886203A Expired - Lifetime US3608349A (en) 1969-01-27 1969-12-18 Method and apparatus for winding spiral springs

Country Status (6)

Country Link
US (1) US3608349A (enrdf_load_stackoverflow)
CH (2) CH509115A (enrdf_load_stackoverflow)
DE (2) DE1961729C3 (enrdf_load_stackoverflow)
FR (1) FR2029449A1 (enrdf_load_stackoverflow)
GB (1) GB1230963A (enrdf_load_stackoverflow)
SE (1) SE370508B (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4433564A (en) 1981-05-20 1984-02-28 Sanden Corporation Scroll manufacturing tool
WO1992019880A3 (en) * 1991-04-29 1993-03-04 Electro Archimedes Ltd Coupling and method of coupling rotating elements using magnetically triggered constricting spiral coil
US20050120554A1 (en) * 2003-12-04 2005-06-09 Tench Thomas J.Jr. Tool for balancing rotating components

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4575679A1 (fr) * 2023-12-19 2025-06-25 Nivarox-FAR S.A. Dispositif pour la séparation de ressorts spiraux estrapadés après un cycle de détente et procédé de fabrication d'un ressort spiral comportant une étape de séparation mise en oeuvre par un tel dispositif

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4433564A (en) 1981-05-20 1984-02-28 Sanden Corporation Scroll manufacturing tool
WO1992019880A3 (en) * 1991-04-29 1993-03-04 Electro Archimedes Ltd Coupling and method of coupling rotating elements using magnetically triggered constricting spiral coil
US20050120554A1 (en) * 2003-12-04 2005-06-09 Tench Thomas J.Jr. Tool for balancing rotating components
US7251887B2 (en) * 2003-12-04 2007-08-07 Honeywell International, Inc. Tool for balancing rotating components

Also Published As

Publication number Publication date
FR2029449A1 (enrdf_load_stackoverflow) 1970-10-23
CH509115A (de) 1971-03-15
DE1961729C3 (de) 1973-09-20
DE1961729A1 (de) 1970-07-30
CH502141A (de) 1971-01-31
DE1966499A1 (de) 1973-01-11
DE1961729B2 (de) 1973-02-22
GB1230963A (enrdf_load_stackoverflow) 1971-05-05
SE370508B (enrdf_load_stackoverflow) 1974-10-21

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