EP0678351A1 - Verfahren zur Herstellung einer Mehrfachriemenscheibe, Formwerkzeug zur Durchführung des Verfahrens und so hergestellte Riemenscheibe - Google Patents

Verfahren zur Herstellung einer Mehrfachriemenscheibe, Formwerkzeug zur Durchführung des Verfahrens und so hergestellte Riemenscheibe Download PDF

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Publication number
EP0678351A1
EP0678351A1 EP95400617A EP95400617A EP0678351A1 EP 0678351 A1 EP0678351 A1 EP 0678351A1 EP 95400617 A EP95400617 A EP 95400617A EP 95400617 A EP95400617 A EP 95400617A EP 0678351 A1 EP0678351 A1 EP 0678351A1
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EP
European Patent Office
Prior art keywords
rim
axis
pulley
punch
symmetry
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.)
Granted
Application number
EP95400617A
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English (en)
French (fr)
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EP0678351B1 (de
Inventor
Gérard Magniez
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Financiere D'etude Et De Developpement Ind Ste
Original Assignee
FINANCIERE D'ETUDE ET DE DEVELOPPEMENT INDUSTRIEL ET TECHNOLOGIQUE Ste
SOFEDIT
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Publication of EP0678351A1 publication Critical patent/EP0678351A1/de
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Publication of EP0678351B1 publication Critical patent/EP0678351B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to a tool to be mounted on a press and intended for forming a pulley blank, the latter comprising a flange on which a cylindrical rim of revolution is connected around an axis of symmetry.
  • the invention relates more particularly to a tool to be used for manufacturing a pulley with multiple grooves, a manufacturing method using this tool and the pulley thus obtained.
  • Multi-grooved pulleys are used in belt transmission systems of motor vehicles, for example to couple the crankshaft and the alternator in rotation, and they are advantageously equipped with a vibration damping device, constituted for example by a crown lead inertia coupled to the pulley through a thickness of elastomeric material.
  • the present invention provides a new manufacturing process, making it possible to obtain, from a pulley blank, by the use of a special tool to be mounted on a press, a pulley which is both light and of reduced bulk. .
  • the present invention also relates to the special tool used by this process, and the pulley obtained by this process.
  • the die bottom is guided in sliding along said axis of symmetry between an end of travel position where it abuts against a support integral with a movable part of the press, and a start of travel position in which it is recalled by first return means and in which it abuts against a shoulder of the die, the latter being slidably mounted along said axis of symmetry between a limit position in which it abuts against said support, and a race start position in which it is recalled by second return means.
  • the punch is guided in sliding along the axis of symmetry between an end of stroke position in which it rests against a sole secured to a fixed part of the press, and a start of stroke position in which it is recalled. by third return means and in which it abuts against a shoulder of a retaining part fixed on the sole.
  • the punch is slidably mounted on a symmetrical guide pin of revolution around said axis of symmetry, and the bottom of the die has a bore capable of receiving this guide pin during operation of the press.
  • the present invention also relates to a pulley obtained in accordance with the method according to the invention.
  • the method and the tool according to the invention make it possible to manufacture from a stamped sheet metal pulleys without a loop, light.
  • the rim of the pulley is strong enough so that after the grooves have been formed, a vibration damping device, consisting of a ring on the radially internal periphery, can be forced into the pulley in contact with the radially internal surface of the rim. from which adheres, by means of a layer of viscoelastic material, a crown of inertia.
  • the invention thus makes it possible to produce a pulley with multiple grooves of reduced bulk, comprising a symmetrical rim of revolution and a metal flange, the rim connecting perpendicularly to the flange and having, at the connection, an external surface generally at right angle, the pulley being provided internally with a vibration damping device force fitted into the rim.
  • a tool 1 comprising a lower part 2 to be mounted in a manner known per se on a fixed table of a single-acting press (known in it- same and not shown) and an upper part 3 to be fixed under a movable part, called a slide, of the press (also known in itself and not shown), capable of being controlled vertically in approach or away from the table.
  • the lower part 2 of the tool 1 comprises a fixing sole 90 having a flat and horizontal lower surface 91, intended to rest on the table of the press.
  • the fixing sole 90 is provided on its upper surface 92, flat and parallel to the lower surface 91, with a retaining plate 120 whose role will be explained below.
  • a punch 10, the upper front face of which bears the reference 14, is slidably mounted in a counterbore 121 of the retaining part 120.
  • the punch 10 is bored in its center at 15 for the passage of a guide pin 100 anchored lower in the sole 90 and projecting at its upper end above the upper front face 14.
  • a pulley blank P drawn from stamping is attached to the upper front face 14, as will be explained below.
  • This pulley blank P has a hub M threaded on the spindle 100 and extended radially outward by a flange F and a cylindrical rim J of revolution around an axis of symmetry X, connecting to one side of the flange F.
  • the punch 10 has a radially external surface 11 cylindrical of revolution around the axis X, at the base of which projects a flange 17 axially retained in the counterbore 121.
  • the punch 10 is slidably mounted along the axis X on the guide pin 100 between a start of travel position, shown in Figure 4A, in which the flange 17 abuts by a shoulder 12 in the bottom 13 of the countersink 121 and an end of travel position, shown in FIG. 1, in which the lower front face 18 of the punch 10 rests against the upper surface 92 of the sole 90.
  • the punch 10 is normally recalled when the tool 1 is at rest, in its position at the start of the race by return means constituted in the embodiment described by six springs 80 with axes parallel to the axis X, angularly distributed around it.
  • the springs 80 are housed below in counterbores 93 of the sole 90, opening onto the upper surface 92.
  • Bores 93a, opening onto the lower surface 91 and into the bottom of the counterbores 93 are provided to facilitate the machining of the counterbores 93 and allow the air trapped between the lower front face 18 of the punch 10 and the upper surface 92 of the sole 90 to escape during the downward movement of the punch 10.
  • the springs 80 are applied at their upper end in the bottom of bores 18a open on the lower front face 18 of the punch 10, and working in compression to urge the punch 10 in upward movement, until the collar 17 stops against the bottom 13 of the countersink 121, as shown in Figures 4A and 4B.
  • the retaining piece 120 and the sole 90 have, in top view, an identical outline of generally rectangular shape comprising, as shown in FIG. 3, on each lateral edge, two notches 130 for the passage of fastening elements of the retaining part 120 and sole 90 on the press table, known in themselves and not shown.
  • the sole 90 and the retaining piece 120 are precisely positioned one on the other by the introduction of positioning pins 150 into respective bores 99 and 124 of the sole 90 and of the retaining piece 120, of axes parallel to the X axis and located in line with one another.
  • the retaining part 120 comprises four counterbores 125 each arranged in the vicinity of a corner thereof and the sole 90 comprises four threads 94 extending downward these counterbores 125, to receive the thread of bolts 160 coming to bear axially by their head 161 in the bottom of the counterbores 125, and intended to secure the retaining part 120 and the sole 90.
  • An extraction crown 30 is slidably mounted along the axis X on the part of the punch 10 extending outside of the retaining piece 120.
  • the extraction crown 30 is delimited axially, along the axis X, by two front faces which are flat and parallel to each other and perpendicular to the axis X. It is delimited radially, on the outside, by a cylindrical surface 31 of revolution around the axis X, at the base of which a flange 32 projects, and it is delimited radially inside by a radially internal surface 33 cylindrical of revolution around the axis X, fitting closely on the cylindrical surface 11 of the punch 10.
  • the extraction crown 30 is retained axially the punch 10 by a lower retaining ring 170 attached to the retaining piece 120, and having a radially internal surface 171 shouldered, symmetrical of revolution about the axis X.
  • the extraction crown 30 is retained axially, lor s of its upward movement, by abutment of the collar 32 against a shoulder 173 of the radially internal surface 171.
  • the lower retaining ring 170 comprises six countersinks 175 angularly distributed around the axis X, in the bottom of which axially bear the shoulders of bolt 180 fixing heads, screwed into threads 126 of the retaining piece 120 extending towards the down the counterbores 175.
  • the lower retaining ring 170 also comprises two bores 177, extended downwards by bores 128 of the retaining part 120 and by bores 96 in the sole 90. Positioning pins 190 are inserted in the bores 177 and 128 to precisely position the lower retaining ring 170 on the retaining part 120.
  • the extraction crown 30 is able to slide on the punch 10 between a retracted position, in which it rests by its lower front face on the upper surface 120a of the retaining piece 120, and a position for extracting the blank. of pulley P.
  • the extraction crown 30 is moved axially under the action of four candles 200 angularly distributed around the axis X. These candles 200 are able to be applied by their upper front face against the lower front face of the extraction crown 30, to each exert a thrust K thereon.
  • the candles 200 are mounted, at their lower end, on a spring device known in itself and not shown, constituted for example by a hydraulic or pneumatic cylinder.
  • the candles 200 pass through the sole 90 and the retaining part 120 by means of respective bores 98 and 129 of the latter, to lift the extraction crown 30 and eject the blank of the pulley P when the upper 3 and lower 2 parts of the tool 1 are spaced from one another, as will be specified in the after.
  • the punch 10 is traversed along its length by four channels 10a of axes parallel to the axis X and equally distributed around the latter. These channels 10a open at their upper end on the upper front face 14 of the punch 10 and at their lower end in radial grooves 10b formed on the lower front face 18 of the punch 10, opening at the periphery of the latter.
  • the channels 10a and the grooves 10b allow the air trapped between the pulley blank P and the upper front face 14 of the punch 10 to escape when the punch 10 engages in the interior volume of the blank and comes apply to the flange F.
  • the upper part 3 of the tool 1 comprises a support 50 attached by its upper face 50a, flat and horizontal, under a movable part of the press, known in itself and not shown.
  • a matrix base 20 the lower front face of which has a peripheral annular surface perpendicular to the axis X and bearing the reference 21, is mounted to slide along the axis X under the support 50.
  • This matrix base 20 is delimited radially by an external cylindrical surface 23 of revolution about the axis X, at the upper end of which projects a flange 24.
  • the bottom of the matrix 20 is delimited axially at its upper part by an upper front face 25 which is flat and perpendicular to the X axis.
  • the bottom of the die 20 is bored at its lower part along the X axis to define a housing 26, opening on its lower front face and intended to receive the upper end 110 of the guide pin 100 when the moving part of the press, therefore the upper part 3 of the tool 1, is lowered towards the lower part 2.
  • a die 40 is slidably mounted along the axis X on the bottom of the die 20. It has a radially internal stepped surface, comprising a lower portion 41 and an upper portion 41a, both cylindrical of revolution around the axis X and delimited axially by a shoulder 42 perpendicular to the axis X.
  • the lower portion 41 fits tightly on the cylindrical surface 23 of the die bottom 20.
  • the die 40 has a radially outer surface 47 cylindrical of revolution around the axis X, at the upper end of which a flange 48 projects.
  • the matrix 40 is retained axially under the support 50 by an upper retaining ring 210 attached to the lower face 51, flat and horizontal, of the support 50.
  • the upper retaining ring 210 has a radially internal stepped surface, comprising a lower portion 211 and an upper portion 212, both cylindrical of revolution around the axis X, delimited axially by a shoulder 213 perpendicular to the axis X.
  • the flange 48 of the matrix 40 is retained axially under the support 50 by the lower face 51 and the shoulder 213.
  • the upper retaining ring 210 comprises eight counterbores 216 distributed equally around the axis X, in the bottom of which are supported bolt heads 250 screwed into threads 52 of the support 50, extending upward the counterbores 216, intended to maintain the upper retaining ring 210 against the lower face 51 of the support 50.
  • the upper retaining ring 210 is precisely positioned under the support 50 by the engagement of two positioning pins 300 in bores 217 of the ring 210 and in bores 53 of the support 50 surmounting them. These bores 53 are extended above by threads 54 intended for fixing, by bolting, the support 50 under the movable part of the press.
  • the support 50 also comprises, centered on the axis X, a thread 55 intended to receive a fixing bolt for the support 50 under the movable part of the press.
  • the support 50 has a generally rectangular shape, with a contour identical to that of the sole 90 and of the retaining piece 120, and it is provided on its two lateral edges with notches 310, situated directly above the notches 130 of the lower part 2 of the tool 1, intended for the passage of fastening elements of the support 50 on the movable part of the press, known in themselves and not shown.
  • pins 320 are screwed, at their upper part, into threads 218 opening onto the lower front face of the retaining ring 210. These pins 320 are capable of engaging, when the upper part 3 of the tool 1 is lowered during operation of the press, in the bores 330 and 340 of the retaining piece 120 and the sole 90 to push down the candles 350, as will be explained below.
  • the bottom of the die 20 is slidably mounted along the axis X between a limit position where it abuts by its upper front face 25 against the lower face 51 of the support 50, as shown in FIG. 1, and a position at the start of the race, shown in FIG. 4A, in which the flange 24 abuts against the shoulder 42 of the die 40.
  • the bottom of the die 20 is brought back down into this end of travel position by means return constituted, in the embodiment described, by six springs 60, parallel to the axis X and evenly distributed angularly around the latter.
  • the springs 60 are housed above in countersinks 56 of the support 50 and are applied at their lower end in the bottom of bores 27 formed on the upper front face 25 of the matrix bottom 20.
  • the springs 60 work in compression and stress the matrix bottom 20 moving downward away from the support 50.
  • the die 40 is slidably mounted along the axis X between an end of travel position where it abuts by its upper front face 46 against the lower face 51 of the support 50, as shown in Figure 1, and a start position stroke in which it abuts by the flange 48 against the shoulder 213 of the upper retaining ring 210.
  • the die 40 is returned to this position of start of stroke by return means constituted in the embodiment described by eight springs 70 of axes parallel to the axis X and angularly distributed around it.
  • These springs 70 are engaged above in countersinks 57 of the support 50 and are applied at their lower end in the bottom of bores 49 formed on the upper front face 46 of the matrix 40.
  • the springs 70 work in compression and stress the matrix 40 moving down.
  • Four radial grooves are provided on the upper front face 46 of the matrix 40 and the upper front face of the upper retaining ring 210 to allow the air trapped between the base of the matrix 20, the matrix 40 and the support 50 of s ''
  • the axial length of the die bottom 20 is chosen so that, when the lower 2 and upper 3 parts of the tool 1 are initially spaced apart, and the flange 24 axially abuts against the shoulder 42 of the die 40 under the action of the springs 60, the plane of the annular surface 21 of the bottom of the matrix 20 is located under the lower front face 40a of the matrix 40.
  • the matrix 40 comes, in this initial position of the lower 2 and upper 3 parts of the tool 1, into abutment by the flange 48 against the shoulder 213 of the upper retaining ring 210 under the action of the springs 70.
  • the part upper 3 of the tool 1 is sufficiently spaced from the lower part 2 so that the lower front face of the die bottom 20 is located above the upper end of the guide pin 100, and allows engagement on that -this of the pulley blank P, the free edge B of the rim J being directed downwards and coming to rest on the upper front face 30a of the extraction crown 30.
  • the punch 10 is recalled upwards, under the action of the springs 80, up to the stop of the flange 17 in the bottom of the countersink 121.
  • the length of the punch 10 is chosen so that, in the initial position of the tool 1, the flat surface and perpendicular to the X axis of the upper front face 1 4 of the punch 10 protrudes slightly above the upper front surface 30a of the extraction crown 30 situated directly above the annular surface 21.
  • the diameter of the surface 41 is chosen to be greater than the diameter of the surface 11 so as to provide an annular space R when the die 40 is lowered on the punch 10, as shown in FIG. 4B and as will be explained below. .
  • the width of this annular space R is greater than the initial thickness e of the rim J of the pulley blank P, before the operation of the tool 1 and the compaction thereof.
  • the initial distance between the plane containing the free edge B of the rim J and the plane of the surface of the flange F to which the rim J is connected is indicated by b, that is to say the plane of the surface of the flange coming to rest on the upper front face 14 of the punch 10.
  • the diameter of the lower front surface of the die bottom 20 corresponds to the diameter of the radially outer surface of the rim J so that, when the die 40 is lowered on the rim J, the radially internal surface 41 of the die 40 covers the radially external cylindrical surface of the rim J.
  • the upper front face 14 of the punch 10 is connected to the cylindrical surface 11 by a rounding whose radius of curvature, of value r ′, is less than the initial radius of curvature r of the roundness joining the radially internal cylindrical surface of the rim J and the surface of the flange F to which it is connected, before tamping.
  • the radius r ' is chosen to be less than or equal to 1 mm.
  • the operation of the tool 1 is as follows.
  • the movable part of the press is lowered according to arrow A in FIG. 4A in the direction of the press table.
  • the lower front face of the die bottom 20 then comes into contact with the upper surface of the flange F.
  • the upper part 3 of the tool 1 descends further, the lower ends of the pins 320 press on the upper ends of the candles 350 to drag them down.
  • the displacement of the candles 350 downward is accompanied by the simultaneous displacement of the candles 200 and therefore of the sliding downwards of the extraction crown 30 supported by the latter.
  • the pulley blank P then engages gradually on the punch 10, under the effect of the pressure exerted downwards by the die bottom 20, until the flange F rests on the upper front face 14 of the punch 10.
  • the further downward movement of the movable part of the press is accompanied by a depression of the bottom of the die 20 in the die 40, until the latter comes into abutment by its upper front face 25 against the underside 51 of the support.
  • the matrix 40 covers the rim J and is applied, by its lower front face 40a, to the upper front face 30a of the extraction crown 30.
  • the new length along the axis X of the rim being equal to b '.
  • the packing of the rim J is accompanied by an increase in its thickness which reaches a value e 'equal to the radial width of the annular space R.
  • the punch 10 is shown coming into abutment, at term of tamping, by its lower front face 18 against the upper surface 92 of the sole 90. In practice, it is preferred that at the end of the race the lower front face 18 of the punch 10 leaves a residual clearance with the upper surface of the sole 90.
  • the upper part 3 of the tool 1 is then raised, the pins 320 stop pressing on the jack stands 350 which go up and the jack stands 200 move the extraction crown 30 upwards to eject the draft pulley P of punch 10.
  • FIGS. 5A to 5F have summarized, schematically, the different stages of a method for manufacturing a pulley with multiple grooves, using a tool 1 according to the invention.
  • the bell-shaped pulley blank is then leveled off on its free edge (FIG. 5C) in order to eliminate the height irregularities due to stamping, then we proceed (FIG. 5D) to turn the bottom E of the blank to form a flange F.
  • the rim J is connected to an annular portion of the flange F extending perpendicular to the axis of symmetry of the pulley. More particularly, the radially internal surface of the rim J is connected to the inner side of this annular flange portion by a rounded radius of curvature r.
  • the pulley blank is then placed on the tool 1 and the rim J compacted. On leaving the tool 1 (FIG.
  • the rim J has a thickness e ′ greater than e and constant along the axis X, the rim J connecting, on the inside of the annular portion of the flange F, by a rounded radius r 'less than r, r' advantageously being less than or equal to 1 mm, and on the outside of the annular portion of the flange, by a right angle.
  • FIG. 6 shows a pulley obtained in accordance with the above method and equipped with a vibration damping device 500.
  • This pulley comprises a flange F onto which a hub 510 is welded, for its attachment to a crankshaft for example.
  • the flange may have lightening holes in a manner known per se.
  • the pulley has a rim J on the radially external surface of which a series of n grooves G1, ..., G n-1 , G n , n have been formed by flow-turning, in the example described.
  • the extreme grooves G1 and G n are bordered externally by annular extensions each having a recess T, surmounted by a projecting edge V.
  • This projecting edge V optional, makes it possible to avoid an axial overflow of the belt in the event of jumps of this last.
  • the tool 1 according to the invention thanks to the right angle formed between the surfaces 21 and 41 when the die 40 is lowered on the punch 10, makes it possible to obtain, from the initial rounding by which the surface radially outer of the rim J is connected to the flange F, an outer surface generally at right angles bearing the reference W in FIG. 4C.
  • This surface generally at a right angle, guarantees a sufficient thickness of material for subsequently making grooves by flow-turning.
  • the vibration damping device 500 consists of a ring of inertia 501 coaxial with the axis of symmetry of the pulley, bonded by its radially external surface, by means of a layer of viscoelastic material 502, for example an adhered elastomer, on the radially internal surface of a mounting ring 503.
  • the latter is forcibly inserted into the pulley and is applied against the radially internal surface of the rim J.
  • This force insertion is made possible by forming, by means of tool 1, of the rim J, which makes it possible to obtain in the hollow of the groove G1, in N, a sufficient thickness of material (equal to 2.2 mm in the example described), so that the rim I resist this forceful insertion.
  • the invention makes it possible to produce pulleys with multiple grooves which are particularly light and robust, since it is possible, for example, to thicken a sheet by tamping, at the rim, without weakening the latter to a value thicker than 3 mm.
  • the invention is not limited to the forms of pulleys shown in the drawings.
  • Other configurations of the vibration damping device, of the flange, of the hub and of the rim can be proposed.
  • We will adapt in each case the geometry of the bottom front face of the bottom of die and of the upper front face of the punch to the shape of the pulley considered.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Pulleys (AREA)
EP19950400617 1994-03-22 1995-03-21 Verfahren zur Herstellung einer Mehrfachriemenscheibe, Formwerkzeug zur Durchführung des Verfahrens und so hergestellte Riemenscheibe Expired - Lifetime EP0678351B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9403336A FR2717718B1 (fr) 1994-03-22 1994-03-22 Procédé de fabrication d'une poulie à gorges multiples, outil de formage mis en Óoeuvre par ce procédé et poulie ainsi obtenue .
FR9403336 1994-03-22

Publications (2)

Publication Number Publication Date
EP0678351A1 true EP0678351A1 (de) 1995-10-25
EP0678351B1 EP0678351B1 (de) 2000-02-16

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EP19950400617 Expired - Lifetime EP0678351B1 (de) 1994-03-22 1995-03-21 Verfahren zur Herstellung einer Mehrfachriemenscheibe, Formwerkzeug zur Durchführung des Verfahrens und so hergestellte Riemenscheibe

Country Status (4)

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EP (1) EP0678351B1 (de)
DE (1) DE69515075T2 (de)
ES (1) ES2143014T3 (de)
FR (1) FR2717718B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20130533A1 (it) * 2013-06-28 2014-12-29 Agla Power Transmission S P A Metodo per la realizzazione di una puleggia per applicazioni autoveicolistiche
CN105665514A (zh) * 2016-03-30 2016-06-15 奇瑞汽车股份有限公司 一种汽车顶盖加工设备
CN114192668A (zh) * 2021-11-23 2022-03-18 东风柳州汽车有限公司 一种侧围工具箱开口模具切换结构及模具

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006012318B4 (de) * 2005-04-08 2014-11-13 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Werkzeuge für die Blechbearbeitung sowie Bearbeitungseinheiten eines derartigen Werkzeuges

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2088265A (en) * 1932-09-08 1937-07-27 Hulin Jules Dies for the manufacture of metal wheels
FR1583264A (de) * 1967-07-14 1969-10-24
US3768295A (en) * 1972-02-08 1973-10-30 Reynolds Metals Co Forming apparatus and method
US5129146A (en) * 1989-06-28 1992-07-14 Kabushiki Kaisha Kanemitsu Method of manufacturing poly-v pulleys from sheet metal
DE4220152A1 (de) * 1991-06-21 1992-12-24 Furukawa Aluminium Leichte, v-foermig gerillte riemenscheibe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2088265A (en) * 1932-09-08 1937-07-27 Hulin Jules Dies for the manufacture of metal wheels
FR1583264A (de) * 1967-07-14 1969-10-24
US3768295A (en) * 1972-02-08 1973-10-30 Reynolds Metals Co Forming apparatus and method
US5129146A (en) * 1989-06-28 1992-07-14 Kabushiki Kaisha Kanemitsu Method of manufacturing poly-v pulleys from sheet metal
DE4220152A1 (de) * 1991-06-21 1992-12-24 Furukawa Aluminium Leichte, v-foermig gerillte riemenscheibe

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20130533A1 (it) * 2013-06-28 2014-12-29 Agla Power Transmission S P A Metodo per la realizzazione di una puleggia per applicazioni autoveicolistiche
EP2826571A3 (de) * 2013-06-28 2015-04-22 Agla Power Transmission S.p.a. Verfahren zur Herstellung einer Riemenscheibe für Kraftfahrzeuganwendungen
CN105665514A (zh) * 2016-03-30 2016-06-15 奇瑞汽车股份有限公司 一种汽车顶盖加工设备
CN114192668A (zh) * 2021-11-23 2022-03-18 东风柳州汽车有限公司 一种侧围工具箱开口模具切换结构及模具

Also Published As

Publication number Publication date
FR2717718A1 (fr) 1995-09-29
FR2717718B1 (fr) 1996-06-28
DE69515075D1 (de) 2000-03-23
DE69515075T2 (de) 2000-09-14
ES2143014T3 (es) 2000-05-01
EP0678351B1 (de) 2000-02-16

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