US3852863A - Method of making multi-groove pulleys - Google Patents

Method of making multi-groove pulleys Download PDF

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Publication number
US3852863A
US3852863A US00407942A US40794273A US3852863A US 3852863 A US3852863 A US 3852863A US 00407942 A US00407942 A US 00407942A US 40794273 A US40794273 A US 40794273A US 3852863 A US3852863 A US 3852863A
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United States
Prior art keywords
cup
blank
groove
stage
cylindrical
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
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US00407942A
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English (en)
Inventor
R Killian
N Sproul
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.)
Gates Power Drive Products Inc
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Dyneer Corp
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Priority to US00407942A priority Critical patent/US3852863A/en
Priority to NL7403665.A priority patent/NL167107C/nl
Priority to CA196,124A priority patent/CA982415A/en
Priority to JP4500374A priority patent/JPS5319472B2/ja
Priority to DE2419854A priority patent/DE2419854C3/de
Priority to FR7420382A priority patent/FR2288572A1/fr
Priority to US507221A priority patent/US3908421A/en
Priority to IT27824/74A priority patent/IT1022405B/it
Priority to BR8670/74A priority patent/BR7408670D0/pt
Priority to SE7413158A priority patent/SE409423B/sv
Priority to GB45163/74A priority patent/GB1480769A/en
Priority to GB3980/77A priority patent/GB1480770A/en
Application granted granted Critical
Publication of US3852863A publication Critical patent/US3852863A/en
Assigned to FIRST NATIONAL BANK OF BOSTON, THE reassignment FIRST NATIONAL BANK OF BOSTON, THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NEW DYNEER CORPORATION, A CORP OF DE.
Assigned to GATES POWER DRIVE PRODUCTS, INC. reassignment GATES POWER DRIVE PRODUCTS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: DYNEER CORPORATION, A CORP. OF DE
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/261—Making other particular articles wheels or the like pulleys
    • 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
    • Y10T29/49453—Pulley making
    • Y10T29/4946—Groove forming in sheet metal pulley rim

Definitions

  • ABSTRACT A method of making a V-grooved pulley having at least three grooves from a single cup-shaped sheet metal blank having a cup bottom wall and a cylindrical side wall.
  • a cup-shaped blank first is formed by usual press operations.
  • the cup bottom wall preferably is supplied with a hub of desired configuration having an axial bore with which the ultimately formed pulley grooves are concentric and about which the pulley to be formed is dynamically balanced.
  • Two pulley grooves then initially are spun in a first stage operation adjacent the cup bottom wall in the cup cylindrical flange or side wall to form an intermediate spun product.
  • a third pulley groove then is spun in a second stage operation in the cylindrical cup side wall between the open end of the cup and the two initially spun grooves.
  • the cylindrical side wall portion of the intermediate spun product in which the third groove finally is formed adjacent the open end of the cup supports the cup during the first stage spinning operation while the two grooves initially are formed in the cup, thereby assisting in maintaining concentricity and in providing dynamic balance during groove spinning.
  • the invention relates to spun dynamically balanced V-grooved sheet metal pulleys in which at least three V-grooves are formed in the cylindrical flange or side wall of a cup-shaped blank and in which the V-grooves are relatively narrow and relatively deep and have the same configuration.
  • the invention relates to a method of and to a series of steps carried out or metal working operations performed in a controlled manner to produce a multi-groove pulley having at least three grooves from a single cup-shaped sheet metal blank without resultant localized stresses in the pulley metal, and wherein the completed product has the multiple pulley grooves concentric with respect to the axial bore in the pulley hub, and wherein the pulley is dynamically balanced.
  • V-groove pulleys having three or more grooves made from a single metal blank, dynamically balanced and having concentricity maintained between the grooves and the pulley axis, are much to be desired from many standpoints such as decreased metal cost,
  • V-groove pulley manufacturing procedures including, the steps of forming a cup-shaped sheet metal blank by usual press operations; then providing a hub having an axial bore for and securing the same to the cup-shaped metal blank; then first stage spinning two pulley grooves in the cylindrical side wall of the cup-shaped blank adjacent the cup bottom wall to form an intermediate spun blank; maintaining concentricity of the cupshaped blank'and the two V-grooves spun therein during the first stage spinning operation by supporting the blank concentrically in the axial hub bore, and within the open end of the cup outward of the location of the two grooves being spun in the cylindrical cup side wall; and then second stage spinning a third groove in the cylindrical side wall portion of the intermediate spun blank between the open end of the cup and the two grooves spun therein to form a final three-groove spun pulley product.
  • FIG. 1 is a somewhat diagrammatic side elevation of a spinning machine which may be used to carry out certain steps in the new procedure;
  • FIG. 2 is a somewhat diagrammatic sectional view of a cup-shaped sheet metal blank which has been formed by usual press operations, and with which hub means has been assembled to provide the cup-shaped sheet metal blank in which three V-shaped pulley grooves are to be formed;
  • FIG. 3 is a view similar to FIG. 2 illustrating a first stage spinning operation, and showing an intermediate spun product in which two V-shaped grooves have been formed in the cup side wall adjacent the cup bottom wall;
  • FIG. 4 is a view similar to FIGS. 2 and 3 illustrating a second stage spinning operation, and showing a third groove spun in the intermediate spun product of FIG. 3, between the open end of the cup and the two grooves spun by the first stage spinning operation;
  • FIG. 5 is a fragmentary diagrammatic sectional view illustrating preparations for the first stage spinning operation, and showing the headstock and tailstock assemblies separated with the blank of FIG. 2 inserted therebetween ready to be loaded on the dies carried by the headstock and tailstock assemblies;
  • FIG. 6 is a view similar to FIG. 5 showing the blank of FIG. 2 loaded on the first spinning dies, with the parts in the position ready for the rough rolling of two side-by-side grooves in the cylindrical side wall of the cup adjacent the cup bottom wall;
  • FIG. 7 is a view similar to a fragmentary portion of FIGS. 5 and 6 showing the rough rolling rolls home at the conclusion of the rough rolling portion of the first stage spinning operation;
  • FIG. 8 is a view similar to FIG. 7 illustrating the finish forming rolls in home position at the conclusion of the first stage spinning operation
  • FIG. 9 is a view looking in the direction of the arrows 9-9, FIG. 5, illustrating the segments of the headstock groove-forming die in closed position to permit loading the blank of FIG. 2 on the headstock and tailstock dies;
  • FIG. Ill is a fragmentary view of certain of the parts of FIG. 9 with the segments in the out or expanded position, as illustrated in FIG. 6;
  • FIG. 11 is a fragmentary view of certain of the parts shown in FIGS. 9 and 10 looking in the direction of the arrows 11-11, FIG. 10;
  • FIG. 12 is a sectional view of one of the segments of the headstock dies used in the first stagespinning operation
  • FIG. 13 is an exploded perspective view, with parts broken away and in section, illustrating the adapter and headstock die insert and segment used in the first stage spinning operation;
  • FIG. 14 is a view similar to FIG. 5 of the second stage spinning'operation headstock and tailstock assemblies retracted for introducing the intermediate spun blank of FIG. 3 between the headstock and tailstock assem-' blies for loading the same;
  • FIG. 15 is a view similar to FIG-6 illustrating parts used in the second stage spinning operation with the intermediate blank loaded on the headstock and tailstock dies and the roughing roll for the second spinning operation in position ready to rough spin the third groove;
  • FIG. l7 is a view similar to FIG. 8 illustrating the finish rolls in home position and providing the final V- groove shape of the second stage spinning operation of the finished three side-by-side similar V-grooves in the intennediate blank, thus forming the multi-groove pulley of FIG. 4;
  • FIG. 18 is a view similar to FIG. 9 illustrating the second stage headstock dies with the segments in closed position looking in the direction of the arrows 18-18 of FIG. 14;
  • FIG. 19 is a view similar to FIG. 10 illustrating the second stage headstock die segments in out position for the second stage spinning operation.
  • FIG. 20 is a perspective view of the headstock die segment used in the second stage spinning operation.
  • the new methods of the invention may be carried out ,on, and the new triple groove spun sheet metal products manufactured by such methods may be made on spinning apparatus of the general type shown in U.S. Pat. No. 2,892,431 modified to enable'a new triple groove pulley product to be formed. Such apparatus is indicated somewhat diagrammatically in FIG. 1.
  • a typical spinning machine 1 used for a first stage spinning operation has motor means 2 to drive a first stage headstock spindle 3.
  • a first stage tailstock spindle 4 is journaled in the tailstock 5 in axial alignment with the headstock spindle 3.
  • Either one or both of the headstock and tailstock spindles may be driven, but preferably and usually only the headstock spindle is rotatably driven by the motor means 2.
  • headstock spindle 3 and tailstock spindle 4 are relatively movable axially so as to separate the first stage headstock and tailstock die assemblies 6 and 7, respectively, as shown in FIG. 5, and to move them axially toward one another to intermediate positions shown in FIGS. 6 and 7, and to a final or home position shown in FIG. 8 for the first stage spinning operation. 7
  • a second stage spinning machine (not shown) generally similar to first stage spinning machine 1 is used for a second stage spinning operation and may be equipped with second stage headstock and tailstock die assemblies generally indicated at 8 and 9, respectively, in FIG. 14 in the retracted or separated blank-receiving position, in FIGS. 15 and 16 in intermediate positions, and in FIG. 17 in the final home position wherein the final three-groove pulley is produced.
  • Headstock assembly 6 includes adapter members and 11 bolted together by bolts 12 and mounted on headstock spindle 3.
  • An outer die sleeve 13 is bolted at 14 to adapter 11.
  • An adapter sleeve 15 is axially slidably mounted within a central opening 16 in adapter 11 and a stop head 17 and an insert 18 are bolted at 19 and 20 to form with the adapter sleeve 15 a spool-like sub-assembly.
  • This spool-like assembly 17-15-18 is axially slidably movable within and relative to adapter 11 and outer die sleeve 13. That is, stop head 17 is slidable axially within the central cavity 21 of adapter 11; and insert 18 is slidable axially within the inner surface ofthe outer die sleeve 13.
  • the spool-like assembly 17-15-18 normally is spring-pressed by springs 22 to the position shown in FIG. 5 wherein stop head 17 engages the shoulder 23 at the right-hand end of adapter cavity 21, viewing FIG. 5. However, the spool-like assembly 17-15-18 may move under pressure to the left from the position of FIG.
  • each slot 26 is spacedfrom the nose 32 of insert sleeve portion 25.
  • the sleeve nose 32 may be formed with a removable headstock nose plate 33 for ease of maintenance, since, as explained below, the nose plate 33 is subject to wear.
  • a series of headstock segments, generally indicated at 34 is mounted on and carried by the insert 18.
  • Each segment 34 has a tongue 35 shaped in cross section complementary to the cross sectional shape of the slots 26, and the upper end of tongue 35 terminates in a curved or arcuate flange-like portion 36.
  • the segment flange 36- is formed at one end with an upwardly projecting die segment groove support portion 37.
  • the diesegment support portion 37 is trapezoidal in cross section as shown in FIG. 12.
  • a pair of rounded spring. grooves 38 is formed in the flange portion 36 of segment 34.
  • One rounded edge 39 of tongue 35 extends upward and projects from the edge 40 of segment flange portion- 36.
  • each tongue 35 opposite the flange portion 36, is beveled at 41 downward from the rounded edge 39 approximately to the center of the tongue (FIG. 12); and this end of the tongue 41 also is beveled at'42 from each tongue side surface 43 toward the free lower end 44 of the tongue.
  • a series of segments 34 (eight segments are shown) is assembled with their tongues 35 extending radially in the insert slots 26 as shown in FIG. 9, and a pair of springs 45 seated in the spring grooves 38 press the segments 34 radially inward to the full circle retracted position shown, wherein the end bevels 42 on the tongues 35 engage similar beveled portions on adjacent tongues to stop inward travel of the tongues35.
  • a central opening 46 extends through the insert 18 and segment 34 assembly when'the segments 34 are in full circle positionof FIG. 9.
  • An extended or out position of segments 34 is shown in FIG. It), later described.
  • the outer die sleeve 13 is formed with a flange 47 with which the bolts 14 are engaged in mounting the die sleeve 13 on headstock adapter 11.
  • a blank retainer and wear ring 48 also is bolted at 49 to the die sleeve 13 (FIG. 5).
  • the outer die sleeve .13 has a cylindrical blank die support portion'50 which performs a major function in the new procedure for forming triple groove pulleys.
  • the insert 18 of the spool-like assembly 17-15-18 is slidable axially within the die sleeve support portion 50, as shown in FIGS. 5 and 6 for example.
  • a circumferential notch 51 is formed in retainer ring 48 adjacent the outer cylindrical surface 52 of die support portion to provide an annular recess in which the outer end of a cup-shaped blank may be received and held in a manner later described, as shown in FIG. 6.
  • the end of hydraulic cylinder 57 (FIG.
  • outer die sleeve support portion 50 opposite flange 47 has a conical shape indicated at 53 adapted to cooperate, as later described, with the trapezoidal shape of the die segment groove support portions 37 of segments 34.
  • the segments 34 normally are held in the retracted full-circle position shown in FIGS. 5 and 9 by springs 45 but may be moved to an extended or out position, as shown in FIG. 6 and 10 by a mandrel 54.
  • the mandrel is shown in retracted position in FIG. 5 and in extended or advanced position in FIGS. 6 and 10.
  • the nose of mandrel 54 when moving from the retracted to advanced position, engages the beveled portions 41 of tongues 35 of segments 34 and pushes the segments radially outwardly in the slots 26 of insert 18.
  • the mandrel nose 55 enters the central opening 46 described above when moving the segments 34 radially outward.
  • the cylindrical surface of mandrel 54 slidably engages the free ends 44 of tongues 35 'when the segments are in the extended position of FIGS. 6 and 10 and the flange portions 36 of segments 34 engage and are supported by the inner cylindrical surface of the cylindrical blank support portion 50 of die sleeve 13, as shown in FIG. 6.
  • Movement of the mandrel between retracted and advanced positions is accomplished by connecting the mandrel operating shaft 56 (FIG. 6) with a preferably dinated with other components of the equipment in accordance with the programming of the operation of the spinning machine.
  • the mandrel operating shaft 56 extends from the mandrel 54 to cylinder 57 through hollow members of the headstock and headstock-spindle 3.
  • the first stage spinning tailstock die assembly 7 is mounted on a tailstock adapter 58 (FIGS. 5 and 6) preferably by a threaded coupling 59.
  • the die assembly 7 preferably comprises an outer flanged sleeve 60, a journal sleeve 61, anouter die sleeve 62 and a pressure and support pad ring 63.
  • the various sleeves and rings -61-62-63 areassembled by bolts 64, 65 and 66.
  • the outer die sleeve 62 at its outer or free end has a conical work surface shape indicated at 67 which also cooperates, as later described, with the work surfaces of the trapezoidal shape of the die segment groove support portions 37 of headstock die segments 34.
  • the first stage headstock and tailstock die assemblies 6 and 7 are designed to cooperate with roughing and finish spinning roll assemblies illustrated somewhat diagrammatically in FIGS: 6, 7 and 8. These spinning roll assemblies are mounted for operation and-movement on the spinning machine 1 so that the-roughing rolls generally indicated at 68, first perform a rough multigroove spinning operation illustrated in FIGS. 6 and 7, and then the finish spinning rolls generally indicated at 69, perform the finish rolling of two V-grooves during the first multi-groove spinning operation.
  • the first stage roughing roll and finish roll assemblies -68 and 69 generally are similar to the roughing and f1 ish rolls of US. Pat. Nos. 2,869,223 and 2,892,431.
  • the roughing roll assembly 68 includes a roll holder 70, spindle means 71, an axially stationary roughing roll 72, and an axially movable roughingroll 73 normally biased away from roll 72 by spring means 74, as shown in FIG. 6.
  • the roll holder 70 is mounted at one side of the headstock and tailstock first stage die I assemblies 6 and 7, and is movable toward and away 1) whose operation is coorfrom the die assemblies 6 and 7 while the axis of the spindle means 71 is maintained parallel with the axis of the first stage headstock and tailstock die assemblies 6 First Stage Spinning Operation
  • the manufacture of a triple Vgroove pulley in accordance with the present invention starts with forming a cup-shaped sheet metal blank, as indicated at 80 in FIG.
  • the formed blank 80 has a cup bottom wall 81 and a cup side wall 82.
  • the cup-shaped blank 80 then is mounted on a suitable hub 83 in any usual manner, for example, as. by welding.
  • a reinforcing stamped sheet metal flanged ring 84 may be included in the blank-hub assembly for stiffening and reinforcing the cup-bottom wall 81. Ring 84 also may be welded to the hub 83 and cup-bottom wall 81.
  • the cup-shaped blank 80 during manufacture is provided with an exact and uniform side wall axial length from the bottom wall corner 85 to the free or open end 86 of the cup-shaped blank80.
  • the hub 83 has an internal bore 87 with which the pulley grooves to be provided in the finally-formed product must be axially concentric.
  • the side wall 82 of the cup-shaped blank 80 when assembled on hub 83 I is formed and assembled cylindrically concentric with the bore 87 of hub 83.
  • the cup-shaped blank 80 assembled with its hub 83 and reinforcing ring 84, comprises the starting blank for the first stage spinning operation.
  • the first stage headstock and tailstock die assemblies 6 and 7 In order to carry out the first stage spinning operation, the first stage headstock and tailstock die assemblies 6 and 7 must be axially separated sufficiently to permit the blank 80 to be inserted between the die assemblies 6 and 7 to load the blank thereon and to be engaged by the die work surfaces.
  • the separated headstock and tailstock die assemblies 6 and 7 with the mandrel 54 retracted and the cup-shaped blank 80 ready to be loaded on the die assemblies are shown in FIG. 5. j
  • the tailstock is actuated, after placing the'blank 80 between the die assemblies 6 and 7, to move the die assembly 7 to the left toward the headstock, as shown by the arrow 88 (FIG. 6), so that the tailstock outer die sleeve 62 and its die work surface 67, and the pressure and support pad ring 63 engage the cup bottom wall 81; and so that the journal sleeve 61 engages an end of hub 83, all as shown in FIG. 6.
  • mandrel 54 is advanced in the direction of the arrow 89 (FIG. 6) from retracted position first to engage and radially expand the die segments 34 to the position shown in FIG. 6, and then to enger the bore 87 of the pulley hub 83 thereby establishing a con- 86 of blank is trapped in the notch 51 of dition of concentricity between all headstock and tailstock die components and the cup-shaped blank.
  • the various parts are in the position shown in FIG. 6 with the blank 80 clamped between the headstock and tailstock die assemblies 6 and 7.
  • the bottom Wall of blank 80 adjacent the corner is engaged externally in an annular zone by the die work surface 67 at the conical end of the outer first stage tailstock die sleeve 62.
  • the bottom wall 81 of the cup is externally engaged opposite the location of the flanged reinforcing ring 841 at a smaller conical annular zone by the die work-contacting conical surface of pressure and support pad ring 63.
  • the cylindrical side wall 82 is clamped under axial pressure between the first stage headstock and tailstock die assemblies 6 and 7.
  • the roughing roll assembly 68 for the first stage spinning operation is located at one side of the headstock and tailstock die assemblies 6 and 7, with the roughing rolls 72 and 73 separated, as shown in FIG.'6.
  • the rolls 72 and 73 are located at positions on either side of the location of the trapezoidally-shaped die segment groove support portions 37. y
  • the first stage tailstock then moves further toward the headstock in the direction of the arrow 88 from the position of FIG. 6 to that of FIG. 7, and at the same time the roughing roll assembly 68 is moved radially to-' ward the axis of the spinning machine, that isan axis passing centrally through the mandrel 54 indicated by the dot-dash line 92 in FIG. 7.
  • the unsupported metal in the sidewall 82 of the blank 80 between the corner 85 and the supported blank side wall portion 91 is worked, spun, displaced, and reshaped by the rough spinning rolls 72 and 73 to the shape in cross section indicated at 93 in FIG. 7.
  • This metal shape 93 may be referred to as the double-groove, rough-spun shape or formation.
  • the double-groove shape 93 thus, is located in the annular zoneof the cup side wall 82 immediately adjacent the corner 85.
  • This cylindrical cup side wall portion 91 comprises the portion of the cup blank 80 wherein the third groove is spun during the second stage spinning operation, to be described.
  • FIG. 7 The position of the various parts at the conclusion of the rough-spinning portion of the first stage spinning operation. is shown in FIG. 7, with the rough-spinning roll assembly 68 in the home position completing rough-spinning of the rough-spun double-groove shape, 93.
  • the spool-like assembly 17-15-18 on which the trapezoidally-shaped die segment pulley groove support porfurther in the direction of the arrow 88 as shown in FIG. 8.
  • the spinning rolls 77 and 78 while moving radially toward the rotating blank 80 held between the headstock and tailstock die assemblies 6 and 7 further work, spin, displace and reshape the rough-spun double-grooveformation 93 of FIG. 7 to the first stage finish-spun shape indicated at 95 in FIG. 8.
  • the finish spinning rolls 77 and'78 have a contour that shapes the finish-spun double grooves 95 with the desired .V-groove formations, as shown.
  • metal in the side wall of the blank 80 being spun to the double V-groove shape 95 is ironed and cold-worked on the inner and outer surfaces of the V-groove shape, between the related and cooperative work-contacting die surfaces 67 of outer tailstock die sleeve 62, of the V-shaped peripheries 96 and 97, respectively, of the finish spinning rolls 77 and 78, of the work-engaging die surfaces of the trapezoidally-shaped die segment groove support portions 37, and of the conical and cylindrical work-engaging die surfaces 53 and 52 of the outer die sleeve 13.
  • the sup ported blank side wall portion 91 is ironed between the outer die sleeve cylindrical support surface 52 and the cylindrical portion 98 of finish'spinning roll 77.
  • This ironing, as well as the trapping of the free end 86 of the blank 80 by the notch 51 in blank-retaining and wear ring 48 not only maintains the supported cylindrical portion 91 of the cup side wall concentric with the remainder of the blank, but irons the engaged portion of a the cup side wall portion 91 to maintain uniform thickness thereof, despite the working of adjacent metal originating from the cup side wall in forming the double V-pulley grooves indicated at 99.
  • FIG. 3 The intermediate-spun blank with the double V- pulley grooves 99 formed therein, is illustrated in FIG. 3, indicated generally at 100.
  • the intermediate-spun blank 100 now becomes the starting blank for the second stage spinning operation in which a third V-groove is spun in the cylindrical portion 91 of blank 100.
  • Second Stage Spinning Apparatus The second stage headstock and tailstock die assemblies'8 and 9, illustrated in'FlGS. 14 through 20, are mountedona spinning machine, such as illustrated in FIG. 1, in place of the first stage headstock and tailstock die assemblies 6 and 7.
  • FIG. 1 is described above as generally illustrating the first stage spinning machine, it is also illustrative of a second stage spinning machine because of showing three finish V- groove forming rolls later described.
  • Headstock assembly 8 includes adapter members 101 and 102 bolted together by bolts 103 and mounted on headstock spindle 104.
  • An outer die sleeve 105 is bolted at 106 to adapter 102.
  • An adapter sleeve 107 is axially slidably mounted within a central opening 108 in adapter 102 and a stop head 109 and an insert 110 are bolted at 111 and 112 to form with adapter sleeve 107 a spool-like subassembly 109-107-110.
  • the spool-like assembly 109-107-110 is axially slidably movable within and relative to adapter 102 and outer die sleeve 105. That is, stop head 109 is slidable axially within the central cavity 113 of adapter 102; and insert 110 is slidable axially within the inner surface of the outer die sleeve 105.
  • the spool-like assembly 109-107-110 normally is spring-pressed by springs 114 to the position shown in FIG. 14 wherein stop head 109 engages the shoulder 115 at the right-hand end of the adapter cavity 113, viewing FIG. 14. However, the spool-like assembly 109-107-110 may move under pressure to the left from the position of FIG.
  • Insert 110 is generally similar to insert 18, and the assembly thereof with segments, is shown in FIGS. 18 and 19.
  • Insert 110 includes a flange portion 117 and a sleeve portion 118 formedwith radial slots 119 which extend between the inner and outer surfaces 120 and 121 of sleeve 118.
  • An annular sleeve nose plate 122 and retainer ring 123 are bolted at 124 to the outer endof sleeve 118 of insert 110.
  • a series of headstock segments is mounted on and carried by insert 110.
  • Each segment 125 has a tongue 126 shaped in cross section complementary to the cross-sectional shape of the slots 119, and the upper end'of tongue 126 terminates in a curved or arcuate flange-like portion 127.
  • Flange 127 is formed at one end with an upwardly-projecting die segment groove support portion 128. This die segment support portion 128 is trapezoidal in cross section, as shown in FIG. 14.
  • a pair of rounded spring grooves 129 is formed in the flange portion 127 of segment 125.
  • One rounded edge 130 of tongue 126 extends upward and projectsfrom the other edge of segment flange portion 127.
  • the lower end of each tongue 126 opposite the flange portion 127 is beveled at 131 downward from the rounded edge 130 approximately to the center of the tongue (FIG. 20 and this end of the tongue also is beveled at 132 from each tongue side surface 133 toward the lower free end 134 of the tongue.
  • Ring 140 has a tapered roll-engaging surface 142, the purpose of which is later described.
  • Die sleeve 105 has a conically-shaped work-engaging surface 143 at its free end and an annular notch 144 is formed at the corner between the conical surface 143 and the outer cylindrical surface 145 of the die sleeve 105.
  • the work-engaging surface l43 cooperates, as later described, with the trapezoidal shape of the die segment groove support portions 128 of segments 125.
  • the segments 125 normally are held in the retracted full circle position of FIGS. 14 and 18 by springs 135 but may be moved to an extended or out position, as shown in FIGS. 16 and 19 by a mandrel 146.
  • the mandrel is shown in retracted position in FIG. 14 and in extended or advanced position in FIGS. and 19.
  • the nose 147 of mandrel 146 when moving from the retracted to advanced position, engages the beveled portions 131 of tongues 126 of segments'l25 and pushes the segments radially outwardly in the slots 119 of insert 110.
  • the mandrel nose 147 enters the central opening 136 described above when moving the segments 125 radially outward.
  • the cylindrical surface of mandrel 146 slidably engages .the free ends 134 of tongues 126 when the segments are in the extended position of FIGS. 15 and 19, and the flange portions 127 of segments 125 engage and are supported by the inner cylindrical surface of the'recess 139 of die sleeve 105, as shown in FIGS. 15, 16 and 17.
  • Mandrel operating shaft 148 (FIG. 16) with a preferably hydraulic cylinder such as the cylinder indicated at 57, F lG. 1, of a second stage spinning machine.
  • the operation of the cylinder controlling movement of the mandrel 146 is coordinated with the operation of other components used in carrying out the second stage spinning operation in accordance with the programming of such operation.
  • Mandrel operating shaft 148 extends from the mandrel 146 to the operating cylinder such as cylinder 57 through hollow members of the headstock and headstock spindle 104.
  • the second stage spinning tailstock die assembly 9 is mounted on a tailstock adapter 149 (FIGS. 14 and 15) preferably by .a threaded coupling 150.
  • the die assembly 9 preferably comprises, an outer flanged sleeve 151, a journal sleeve.152, an outer die sleeve 153, and a pressure and support pad ring 154.
  • the various sleeves and rings 151-152-153-154 are assembled by bolts 155, 156 and 157.
  • the outer die sleeve 153 at its outer or free end has a conical work-engaging surface shape 158 which also cooperates, as later described, with the work surfaces of the trapezoidal shape of the die segment groove support portion 128 of headstock die segment 125.
  • the second stage headstock and tailstock die assemblies 8 and 9 are designed to cooperate with roughing and finish spinning roll assemblies, illustrated somewhat diagrammatically in FIGS. 15, 16 and 17. These second stage spinning roll assemblies are mounted for operation and movement on the second stage spinning machine so that the roughing roll assembly generally indicated at 159, first performs a rough third groove spinning operation, illustrated in FIGS. 15 and 16; and then the finish spinning roll assembly, generally indicated at 160, performs the finish rolling of the third V- groove while the shape of the first stage spun two V- grooves is maintained during the second stage multigroove spinning operation.
  • the second stage roughing roll and finish roll assemblies 159 and 160 generally are similar to the first stage roughing and finishing roll assemblies, except that only one roughing roll isused in the second stage rough rolling operation.
  • the roughing roll assembly 159 includes a roll holder or spindle-161 on which the axially stationary roughing roll 162 is mounted.
  • the roll spindle 161 is mounted at one side of the headstock-and tailstock die assemblies 8 and 9, and is movable toward and away from the die assemblies 8 and 9 while its axis is maintained parallel to the axis of the second stage headstock and tailstock die assemblies 8 and 9.
  • the finish spinning roll assembly 160 is shown in FIG. 17 and is provided with a roll holder and spindle means 163, an axially-stationary finishing roll 164 and two axially-movable spinning rolls 165 and 166.
  • the finishing rolls 165 and 166 are biased away from roll 164 by spring means 167.
  • the intermediate spun blank with double V- pulley grooves 99 formed therein comprises the starting blank for the second stage spinning operation.
  • the second stage headstock and tailstock die assemblies 8 and 9 In order to carry out the second stage spinning operation, the second stage headstock and tailstock die assemblies 8 and 9 must be axially separated sufiiciently to permit the blank 100 to be inserted between the die assemblies 8 and 9 to load the blank thereon and to be engaged by die work surfaces.
  • the second stage headstock and tailstock die assemblies 8 and 9, separated, with the mandrel 146 retracted and the intermediate spinning blank 100 ready to be loaded on the die assemblies are shown in FIG. 14.
  • the tailstock is actuated, after placing the blank 100 between the die assemblies 8 and 9, to move the die assembly 9 to the left toward the headstock, as shown by the arrow 168 (FIGS. 14 and 15 so that the tailstock outer die sleeve 153 and its die work surface 158, and the pressure and support pad ring 154 engage the-bottom wall 81 of the intermediate blank 100; and so that the journal sleeve 152 engages an end of hub 83, all as shown in FIG. 15.
  • the mandrel 146 is advanced in the direction of the arrow 170 from the retracted position of FIG. 14 to the position shown in FIG. 15.
  • the nose 147 of the mandrel, and the mandrel itself radially expand the die segments 125 to the position shown in FIG. 15, and then the mandrel enters the bore 87 of the pulley hub 83 thereby establishing a condition of concentricity between all headstock and tailstock die components and the blank 100.
  • the various parts are in the position shown in FIG. 15 with the blank 100 clamped between the headstock and tailstock die assemblies 8 and 9.
  • the bottom wall 81 of the blank 100 adjacent the two V- groove formation 99 is engaged externally in an annular zone by the die work surface 158 at the conical end of the outer second stage tailstock die sleeve 153.
  • the bottom wall 81 of the blank 100 is externally engaged opposite the location of thereinforcing ring 84 at a smaller conical arinular zone by the conical die work-contacting surface 171 of pressure and support pad ring 154.
  • the cylindrical side wall portion 91 of the blank 100 is clamped under axial pressure between the second stage headstock and tailstock die assemblies 8 and 9 (FIG. 15).
  • the roughing roll assembly 159 for the second stage spinning operation is located at one side of the headstock and tailstock die assemblies 8 and 9, with the roughing roll 162 location, as shown in FIG. 15, at a position intermediate the ends of blank cylindrical side wall portion 91 and opposite the space between the outer die sleeve work-engaging surface 143 and the segment die support portions 128.
  • the second stage tailstock then moves further toward the headstock in the direction of the arrow 168 from the position of FIG. 15-to that of FIG. 16; and at the sametime, the roughing roll assembly 159 is moved radially toward the axis of the spinning machine, that is an axis passing centrally through the mandrel 146 indicated by the dot-dash line 172 in FIG. 16.
  • the metal in the cylindrical side wall portion 91 of intermediate blank 100 between the free end 86 trapped in notch 144 and the double-groove formation 99 is worked, spun, displaced and reshaped by the rough spinning roll 162 to the shape in cross section, indicated at 173 in FIG. 16.
  • This metal shape 173 may be referred to as the thirdgroove rough-spun shape or formation.
  • the third groove shape 173, thus, is located in the annular zone of the cup side wall between the double V- groove shape 99 and the trapped free end 86 of the blank 100.
  • FIG. 16 The position of the various parts at the conclusion of the rough-spinning portion of the second stage spinning operation is shown in FIG. 16,.with the rough-spinning roll assembly 159 in the home position completing the rough-spinning of the third groove to the roughspun third-groove shape 173.
  • the spool-like assembly 109-107-110 on which the trapezoidally-shaped die segment pulley groove support portions 128 are mounted remains in the position shown in FIGS. 14, 15 and 16.
  • the roughing roll assembly 159 is retracted by moving the axis thereof away from the spinning machine axis 172. During such movement, the second stage finish spinning roll assembly 160 is moved radially toward the axis 172 of the spinning machine; and at the same time, the tailstock die assembly 9 is moved further in the direction of the arrow 168, as
  • the finish spinning roll 164 while moving radially toward the rotating blank 100 held between the headstock and tailstock die assemblies 8 and 9 further works, spins, displaces and reshapes the rough-spun third groove shape 173 of FIG. 16 to the second stage final spun shape of FIG. 17.
  • the finish spinning rolls 165 and 166 engage in and support the V-groove contours of the two-groove formation 99 of the intermediate blank 100 to form a finished spun triple V-groove contour 174 fo the completed triple-groove pulley, indicated at 175 in FIGS. 4 and 17.
  • the metal in the walls of the various grooves of the three-groove formation 174 being spun is ironed and cold-worked on inner and outer surfaces of the triplegroove shape, between related and cooperative workcontacting die surfaces 158 of the outer tailstock die sleeve 153, of the V-shaped peripheries of the finish spinning rolls 164, 165 and 166, of the work-engaging die surfaces of the trapezoidally-shaped die segment groove support portions 128, and of the conical workengaging die surface 143 of the outer die sleeve 105.
  • a conical surface 176 on spinning roll 164 engages the roll-engaging surface 142 of control ring 140, moving the control ring 140 to the left from the position of FIG. 16 to that of FIG. 17 against the pressure of spring means 141 to expose a trapped cylindrical end portion 177 of the blank 100 so that the portion 177 as well as the remainder of the triple-groove V-groove formation 174 is ironed between the cooperating and work-engaging die and spinning roll surfaces to provide and maintain the concentric formation of all portions of the finished triple-groove pulley 175.
  • This ironing also provides or maintains uniform thickness of the walls of the triple-groove shape thereby imparting dynamic balance to the finished triple-groove pulley 175.
  • the segments 34 and 125 of the first and second stage headstock die assemblies have been described in both the full-circle and out positions. These positions are of importance to permit the work-contacting die surfaces of the segments to engage and support blank metal being cold-worked to form the V-shape when the segments are in the out position, as well as to permit the segments to be retracted to the positions of FIGS. and 14 so that the intermediate pulley blank 100, or the final triple-groove pulley 175 may be removed from the headstock dies.
  • the work-engaging surfaces 37 and 128 of the trapezoidally-shaped die support portions of the segments 34 and 125 cooperate with the work surfaces 53, 67, 143 and 158 of the headstock and tailstock outer die-sleeves of the first and second stage headstock and tailstock die assemblies to work annular metal portions of the pulley blanks in forming the triple V-grooves in the cylindrical side wall of the pulley blanks.
  • Both the first stage and second stage blanks 80 and 100 have been described as having the free ends thereof trapped and held in position during the first and second stage spinning operations. This is of importance to enable the blanks to be maintained under axial pressure during the progress of the spinning operations and to maintain concentricity of the cylindrical blank side wall with the remaining portions of the blank at all times. Furthermore, during the first stage spinning operation, the trapping of the free end of the blank in the notch 51 enables the portion 91 of the first stage blank 80 to be held and supported cylindrically on the headstock die assembly while the severe working of the metal between the cylindrical blank portion 91 and the corner 85 occurs during the formation of the double groove in the blank. Meanwhile, the metal in the cylin?
  • drical portion 91 of the intermediate blank 100 has remained unworked so as to permit the third pulley groove to be formed therein by the same type of spinning operation that has severly cold-worked other portions of the blank to form the first two grooves.
  • the control ring M0 enables the free end of the blank to be'trapped during the second stage spinning operation and its surface 142 to be engaged by the tinish spinning roll 164 to displace the control ring and finally-iron the trapped portion 177 of the blank at the conclusion of a finish spinning operationv
  • the various cooperative relationships between the improved dies of the present invention described, enable the blank metal to be supported and maintained 7 concentric at all times during the progress of the extremely severe cold-working of the metal accompanying the formation of a triple-grooved pulley in a onepiece metal blank.
  • the spinning machine indicated diagrammatically at 1 has been described as a typical spinning machine of the general type shown in US. Pat. No. 2,892,431, wherein mounting, movement,'and control of rough and finish spinning roll assemblies is illustrated. This mounting is generally indicated at 178 in FIG. 1.
  • Such a typical spinning machine on which the headstock and tailstock die assemblies and the rough and finish spin ning rolls may be mounted and actuated also is shown in US. Pat. No. 2,062,415.
  • the headstock and'tailstock spindles both may be driven at the same speed of rotation, and the related coordinated movements of the various die and roll assemblies, mandrels, etc., may be effected either by mechanical or hydraulic means.
  • Fundamental facets of the new concept involve the procedure and equipment for the two-stage spinning operations, and the manufacture of a triple-groove pulley starting with the formation of a cup; followed by a first stage spinning of two V-grooves in the lower portion of the cup side wall adjacent the bottom wall of the cup; using an extended cylindrical cup side wall portion of the open end of the cup wherein a third groove is formed during the second stage spinning operation and beyond the two grooves that are formed, as a means of supporting the cup on a long cylindrical headstock die portion during the first stage spinning operations; and then spinning a third groove in said cylindrical side wall portion of an intermediately-formed product, between the two grooves and the open end of the cup.
  • the present invention provides substantial improvements in the art of making roller-spun V- groove pulleys; provides for the manufacture of a statically and dynamically balanced concentric triplegroove pulley in a one-piece metal blank; satisfies the various objects set forth; solves problems and satisfies demands existing in the art; and obtains the new results indicated.
  • cup-shaped blank 80 is shown and described as having a suitable hub 83 mounted thereon. Some pulleys will not necessarily have a hub of this character.
  • the bottom wall 81 may only be provided with a central opening, which opening is used the same as the hub bore 87 to center the cup-shaped blank bottom wall on a mandrel when clamped between headstock and tailstock dies.
  • a method of making a spun multi-V-groove sheet metal pulley the steps of forming a cup-shaped sheet metal blank with a cup bottom wall, a cylindrical side wall, a corner between the bottom and side walls, and a side wall open end; then first stage spinning two adjacent and connected V-grooves in the cylindrical cup sidewall, adjacent the bottom wall and connected to the corner, and spaced from the open end by a cylindrical wall portion thereby forming an intermediate first stage double-groove spun product; internally cylindrically-supporting said cylindrical wall portion between the open end and the two grooves being spun during the first stage Spinning operation; and then second stage spinning at least a third V-groove in the cylindrical side wall portion between the open end of the cup and the first stage formed double-groove to form a multi-V-groove pulley.
  • blank cylindrical side wall is mounted on the cup bot-- tom wall prior to the first stage spinning operation; and in which the blank is supported within the cylindrical hub bore and said cylindricalwall portion during each of the first and second stage spinning operations to axial pressure is applied to the blank during each of the first and second stage spinning operations at said spaced conical annular cup bottom wall zones.
  • a method of making a spun triple-V-groove sheet metal pulley the steps of forming a cup-shaped sheet metal blank with a cup bottom wall, a cylindrical side wall, a comer between the bottom and side walls, and a side wall open end; then first stage spinning two adjacent and connected V grooves in the cylindrical cup side wall, adjacent the bottom wall and connected to the corner, and spaced from the open end by a cylindrical wall portion in which a third V-groove subsequently is to be spun, thereby forming an intermediate first-stage double-groove spun product; internally cylindrically-supporfting the cylindrical wall portion of the cup between the open end and the two grooves being spun during the first stage spinning operation; and then second stage spinning a third V-groove in said cylindrical side wall portion of the intermediate spun product adjacent and connected to the two grooves to form a triple-V-groove pulley.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Pulleys (AREA)
  • Transmissions By Endless Flexible Members (AREA)
US00407942A 1973-10-19 1973-10-19 Method of making multi-groove pulleys Expired - Lifetime US3852863A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
US00407942A US3852863A (en) 1973-10-19 1973-10-19 Method of making multi-groove pulleys
NL7403665.A NL167107C (nl) 1973-10-19 1974-03-19 Werkwijze voor het door roteren vervaardigen van een plaatmetalen riemschijf met een aantal v-vormige groeven.
CA196,124A CA982415A (en) 1973-10-19 1974-03-27 Method of making multi-groove pulleys
JP4500374A JPS5319472B2 (nl) 1973-10-19 1974-04-20
DE2419854A DE2419854C3 (de) 1973-10-19 1974-04-24 Verfahren und Drückmaschine zum Herstellen einer mehrrilligen Keilriemenscheibe aus Blech
FR7420382A FR2288572A1 (fr) 1973-10-19 1974-06-12 Procede et dispositif de fabrication de poulies multigorges
US507221A US3908421A (en) 1973-10-19 1974-09-18 Apparatus for making multi-groove pulleys
IT27824/74A IT1022405B (it) 1973-10-19 1974-09-27 Procedimento per fabbricare del le pulegge a gole multipl
BR8670/74A BR7408670D0 (pt) 1973-10-19 1974-10-17 Processo de fabricacao de polias metalicas com sulcos multiplos em v e aperfeicoamento em aparelho para formacao de ditas polias
SE7413158A SE409423B (sv) 1973-10-19 1974-10-18 Forfarande och anordning for tillverkning av en trycksvarvad sparskiva med flera v-formade spar
GB45163/74A GB1480769A (en) 1973-10-19 1974-10-18 Manufacture of multi-groove pulleys
GB3980/77A GB1480770A (en) 1973-10-19 1974-10-18 Manufacture of multi-groove pulleys

Applications Claiming Priority (1)

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US00407942A US3852863A (en) 1973-10-19 1973-10-19 Method of making multi-groove pulleys

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US3852863A true US3852863A (en) 1974-12-10

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US00407942A Expired - Lifetime US3852863A (en) 1973-10-19 1973-10-19 Method of making multi-groove pulleys

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US (1) US3852863A (nl)
JP (1) JPS5319472B2 (nl)
BR (1) BR7408670D0 (nl)
CA (1) CA982415A (nl)
DE (1) DE2419854C3 (nl)
FR (1) FR2288572A1 (nl)
GB (2) GB1480769A (nl)
IT (1) IT1022405B (nl)
NL (1) NL167107C (nl)
SE (1) SE409423B (nl)

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US3953995A (en) * 1975-05-27 1976-05-04 Haswell John W Means for making double groove pulleys
US3962896A (en) * 1973-11-23 1976-06-15 Leifeld & Co. Method of producing V-belt pulleys and spinning lathe for carrying out such method
US4023250A (en) * 1975-08-04 1977-05-17 Aspro, Incorporated Method and apparatus for making hubless V-grooved pulley and product
US4050274A (en) * 1976-03-22 1977-09-27 Toyoda Koki Kabushiki Kaisha Apparatus for forming grooved wheels
DE2813801A1 (de) * 1977-08-12 1979-02-22 Rogers Mfg Co Verfahren und vorrichtung zur herstellung von nutrollen o.dgl.
US4144732A (en) * 1977-11-09 1979-03-20 Master Craft Engineering, Inc. Method and apparatus for forming one-piece pulleys
US4273547A (en) * 1975-11-04 1981-06-16 Drive Manufacturing Inc. Method of pulley manufacture and product
US5031296A (en) * 1990-05-14 1991-07-16 S.C. S.R.L. Machine tool for manufacturing pulleys or wheels
CN102500699A (zh) * 2011-12-21 2012-06-20 厦门捷讯汽车零部件有限公司 一种无轮辐汽车解耦电机皮带轮制造模具及工艺
CN102501071A (zh) * 2011-12-21 2012-06-20 厦门捷讯汽车零部件有限公司 单边有小轮辐结构汽车解耦电机皮带轮制造装置及工艺
CN103939578A (zh) * 2013-09-30 2014-07-23 安徽芜湖宝丰输送机械有限公司 一种多功能皮带轮
CN108213161A (zh) * 2017-07-28 2018-06-29 东风襄阳旋压技术有限公司 两级式板制皮带轮的旋压工艺及用于该工艺的专用工装

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JPS60145231A (ja) * 1984-01-05 1985-07-31 Natsuyama Kinzoku Kogyo Kk 自動車用ホイールにおけるインナーリムの製造方法並びにその装置
JPS6285757U (nl) * 1985-11-15 1987-06-01
JPS62151663A (ja) * 1985-12-24 1987-07-06 Kanemitsu:Kk 板金製ポリ５プ−リ
JPS63120920A (ja) * 1986-07-08 1988-05-25 Sanden Corp 電磁クラッチ用ロータの製造方法
JPS63278624A (ja) * 1987-05-11 1988-11-16 Sanden Corp リング状一溝ｖプ−リ−の製造方法及び装置
CN106270205B (zh) * 2016-10-09 2018-03-27 华中科技大学 一种带预紧结构的旋压增厚成形模具
CN106734475A (zh) * 2016-11-14 2017-05-31 吉林省宏展实业有限责任公司 一种旋压加工动平衡车轮的方法

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US2826804A (en) * 1958-03-18 Spun metal manufacture
US2869223A (en) * 1955-03-30 1959-01-20 Automatic Steel Products Inc Method of forming multi-groove pulleys
US2892431A (en) * 1955-02-17 1959-06-30 Automatic Steel Products Inc Apparatus for forming multi-groove pulleys
US2955748A (en) * 1956-01-09 1960-10-11 Automatic Steel Products Inc Multi-groove pulley manufacture
US3368376A (en) * 1965-11-26 1968-02-13 Eaton Yale & Towne Method and apparatus for making pulleys

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DE1108167B (de) * 1954-11-29 1961-06-08 Schloz Motor Condensator Einrichtung zum Herstellen von mit Rillen versehenen Scheiben aus einem zylindrisch geformten Blech
DE1152086B (de) * 1960-12-15 1963-08-01 Kronprinz Ag Verfahren zum Herstellen von Felgen fuer luftbereifte Fahrzeugraeder

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US2826804A (en) * 1958-03-18 Spun metal manufacture
US2892431A (en) * 1955-02-17 1959-06-30 Automatic Steel Products Inc Apparatus for forming multi-groove pulleys
US2869223A (en) * 1955-03-30 1959-01-20 Automatic Steel Products Inc Method of forming multi-groove pulleys
US2955748A (en) * 1956-01-09 1960-10-11 Automatic Steel Products Inc Multi-groove pulley manufacture
US3368376A (en) * 1965-11-26 1968-02-13 Eaton Yale & Towne Method and apparatus for making pulleys

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3962896A (en) * 1973-11-23 1976-06-15 Leifeld & Co. Method of producing V-belt pulleys and spinning lathe for carrying out such method
US3953995A (en) * 1975-05-27 1976-05-04 Haswell John W Means for making double groove pulleys
US4023250A (en) * 1975-08-04 1977-05-17 Aspro, Incorporated Method and apparatus for making hubless V-grooved pulley and product
US4273547A (en) * 1975-11-04 1981-06-16 Drive Manufacturing Inc. Method of pulley manufacture and product
US4050274A (en) * 1976-03-22 1977-09-27 Toyoda Koki Kabushiki Kaisha Apparatus for forming grooved wheels
DE2813801A1 (de) * 1977-08-12 1979-02-22 Rogers Mfg Co Verfahren und vorrichtung zur herstellung von nutrollen o.dgl.
US4144732A (en) * 1977-11-09 1979-03-20 Master Craft Engineering, Inc. Method and apparatus for forming one-piece pulleys
US5031296A (en) * 1990-05-14 1991-07-16 S.C. S.R.L. Machine tool for manufacturing pulleys or wheels
CN102500699A (zh) * 2011-12-21 2012-06-20 厦门捷讯汽车零部件有限公司 一种无轮辐汽车解耦电机皮带轮制造模具及工艺
CN102501071A (zh) * 2011-12-21 2012-06-20 厦门捷讯汽车零部件有限公司 单边有小轮辐结构汽车解耦电机皮带轮制造装置及工艺
CN103939578A (zh) * 2013-09-30 2014-07-23 安徽芜湖宝丰输送机械有限公司 一种多功能皮带轮
CN108213161A (zh) * 2017-07-28 2018-06-29 东风襄阳旋压技术有限公司 两级式板制皮带轮的旋压工艺及用于该工艺的专用工装
CN108213161B (zh) * 2017-07-28 2024-01-26 东风襄阳旋压技术有限公司 两级式板制皮带轮的旋压工艺及用于该工艺的专用工装

Also Published As

Publication number Publication date
GB1480770A (en) 1977-07-27
BR7408670D0 (pt) 1975-09-23
DE2419854C3 (de) 1985-10-10
JPS5319472B2 (nl) 1978-06-21
IT1022405B (it) 1978-03-20
CA982415A (en) 1976-01-27
NL167107C (nl) 1981-11-16
SE7413158L (nl) 1975-04-21
SE409423B (sv) 1979-08-20
NL167107B (nl) 1981-06-16
DE2419854B2 (de) 1980-09-18
NL7403665A (nl) 1975-04-22
FR2288572A1 (fr) 1976-05-21
JPS5066642A (nl) 1975-06-05
FR2288572B1 (nl) 1980-04-18
GB1480769A (en) 1977-07-27
DE2419854A1 (de) 1975-04-30

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