EP0463200A1 - Dispositif pour produire des contours formés sur le pourtour de pièces à symétrie de révolution en tôle et procédé pour utiliser ce dispositif - Google Patents

Dispositif pour produire des contours formés sur le pourtour de pièces à symétrie de révolution en tôle et procédé pour utiliser ce dispositif Download PDF

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Publication number
EP0463200A1
EP0463200A1 EP90112026A EP90112026A EP0463200A1 EP 0463200 A1 EP0463200 A1 EP 0463200A1 EP 90112026 A EP90112026 A EP 90112026A EP 90112026 A EP90112026 A EP 90112026A EP 0463200 A1 EP0463200 A1 EP 0463200A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
ring
receiving ring
pressure
spindle
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.)
Withdrawn
Application number
EP90112026A
Other languages
German (de)
English (en)
Inventor
Helmut Wenzel
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.)
Leifeld GmbH and Co
Original Assignee
Leifeld GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Leifeld GmbH and Co filed Critical Leifeld GmbH and Co
Priority to EP90112026A priority Critical patent/EP0463200A1/fr
Priority to US07/717,094 priority patent/US5133204A/en
Publication of EP0463200A1 publication Critical patent/EP0463200A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B21D53/28—Making other particular articles wheels or the like gear wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H5/00—Making gear wheels, racks, spline shafts or worms
    • B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02—Dies; Accessories
    • B44B5/026—Dies

Definitions

  • the invention relates to a device according to the preamble of claim 1 and a method for operating the device.
  • the device is a spinning machine with a main spindle and a chuck arranged thereon, and with several profile rollers of increasing profile depth that are used one after the other and can be driven with an adjustable speed ratio to the main spindle.
  • This device can be used very well for the stated purpose, in particular because of its high production accuracy; However, it is considered disadvantageous that the control effort for setting and maintaining the required speed ratio is relatively high and that the machining time per workpiece is comparatively long due to the successive use of several profile rollers.
  • the contouring of the workpiece can be generated using a single tool, essentially consisting of a receiving ring and embossing stamp (s), which ensures short piece times and thus cost-effective workpiece machining.
  • the receiving ring, the embossing stamp and their arrangement and distribution in the receiving ring can be freely selected within wide limits, which allows the creation of practically any desired contours.
  • the dies can be easily equipped with large guiding surfaces, which ensures precise, jam-free and low-wear guiding, whereby the orientation of the dies can also be freely defined within wide limits, which is e.g. enables inclined gears or other special contours.
  • a further embodiment of the method is specified in claim 10. This advantageously enables multiple machining, in particular further shaping, of the workpiece without reclamping and without changing the machine, which contributes significantly to the inexpensive manufacture of the workpieces.
  • the further reshaping preferably consists in that circumferential contours are pressed into the workpiece in the circumferential direction by means of one or more successively radially supplied pressure rollers provided next to the pressure roller.
  • a major advantage of the invention is that regardless of the radial position of the pressure roller and the position of the pressure ring, a consistently accurate, geometrically exact assignment between the workpiece or its outer circumference on the one hand and the receiving ring with the dies on the other hand is always guaranteed.
  • the device according to the invention and the associated method can therefore be used to produce highly precise contours on the outer circumference of rotationally symmetrical workpieces with regard to their shape and position.
  • the workpieces that can be produced with the new device and the new method can e.g. Toothed pulleys, pulleys with setting and / or assembly markings or incremental encoders for angle and / or speed measurements.
  • the exemplary embodiment of the device 1 shown here essentially consists of two spindles, namely a first spindle 11, which is upper in FIG. 1, and a second spindle 21, which is lower in FIG. 1.
  • Each of the two spindles 11 and 21 is equipped with a workpiece holder 12 or 22 at its front end, which clamps a rotationally symmetrical workpiece 7, here a V-belt pulley, between them.
  • At least one of the two spindles 11 and 21 is equipped with a rotary drive (not specifically shown here), but it is preferably provided that both spindles 11 and 21 can be driven synchronously.
  • a receiving ring 3 is arranged concentrically to the lower spindle 21 in the sliding seat, which is axially displaceable to the spindle 21 by means of a support ring 30, but is non-rotatably held in the circumferential direction.
  • the spindles 11 and 21 and the receiving ring 3 can be rotated together about a central axis of rotation 39 by the spindle drive or the spindle drives.
  • the state of the device 1 before the machining of the workpiece 7 is shown, in which the receiving ring 3 is in a starting position shifted downwards.
  • the lower part of the receiving ring 3 with its smooth inner circumferential surface 32, serves to guide the receiving ring 3 on the spindle 21.
  • the receiving ring 3 is provided with circumferentially distributed, radially extending sliding guides 31 in the form of recesses, of which in FIG. 1 in the right part of a sliding guide 31 is visible.
  • the slide guides 31 each serve to receive an embossing stamp 4, which is not shown in the right part of FIG. 1 for reasons of clarity. However, its shape can be seen from the left part of FIG. 1.
  • a pressure ring 5 extends around the outside of the receiving ring 3 and is floatingly supported on the receiving ring 3 by means of a guide flange 51.
  • the pressure ring 5 On the inside, the pressure ring 5 has an inner circumferential surface 52 that extends over most of its height and describes a cylindrical surface.
  • the pressure ring 5 On the outside, the pressure ring 5 has an outer circumferential surface 50 that also forms a cylindrical surface.
  • a support ring 6 is also arranged, which is also floating.
  • the support ring 6 can be preloaded by a force device 60, here a plurality of helical springs running in the radial direction between the receiving ring 3 and the support ring 6, with a force pointing radially outwards.
  • the force device 60 can also be an elastically compressible ring, a hydraulic or pneumatic device or another suitable device.
  • the support ring 6 With its upper end region, the support ring 6 lies exactly below the slide guide 31 and forms a radially outer support surface for the embossing die 4 in the slide guide 31 that is movable in the radial direction.
  • the workpiece 7 can be seen in the right part of FIG. 1, which is formed here with an essentially V-shaped V-belt groove 72 and a cylindrical outer circumferential region 71, seen in the axial direction, above, the latter with a contour is to be provided, which is generated by means of the stamping die 4 and for which purpose the workpiece holder 12 is formed on the first, upper spindle 11 with a corresponding negative contour 13.
  • the device In the part of FIG. 1 lying to the left of the axis of rotation 39, the device is shown in a state during the machining of the workpiece 7.
  • the receiving ring 3 is now shifted upwards along its inner circumferential surface 32 and the outer circumferential surface of the spindle 21 so that the stamp 4 visible in FIG. 1 in the left part of the illustration lies exactly at the level of the cylindrical outer circumferential region 71 of the workpiece 7.
  • Another difference from the state of the device 1 shown in the right part of FIG. 1 is that the pressure ring 5 is now shifted from its position concentric with the receiving ring 3 into an eccentric position.
  • a pressure roller 8 which can be advanced in the radial direction and which is freely rotatable about an axis of rotation 89 running parallel to the axis of rotation 39.
  • a drive for the pressure roller 8 which is synchronous with the spindle drive can also be provided here. With its outer peripheral surface, the pressure roller 8 bears against the outer peripheral surface 50 of the pressure ring 5 and moves it radially inward in the region facing the pressure roller 8, ie to the right in FIG. 1.
  • the dies 4 are each fed to that of the pressure roller 8 turned area of the receiving ring 3 is also moved radially inward, the end faces 40 of the dies 4 being pressed into the workpiece, deforming the outer peripheral region 71 thereof.
  • the roller 8 is fed until the pressure ring 5 has reached a maximum eccentricity corresponding to the desired contouring depth, as a result of which the desired contouring, here a toothing 73, is produced on the outer peripheral region 71 of the workpiece 7.
  • the upper end region of the support ring 6 engages behind a retaining lug 43 provided on the stamping die 4, as a result of which the force exerted on the support ring 6 by means of the force device 60 is transmitted to the individual stamping dies 4 as a restoring force.
  • FIG. 2 shows that both the receiving ring 3 and the pressure ring 5 are each circular and differ only in their diameter.
  • the inside diameter of the receiving ring 3 essentially corresponds to the outside diameter of the workpiece 7 to be machined, which is not specifically shown in FIG. 2, a movement clearance between the two diameters being required for mounting and removal.
  • FIG. 2 shows that both the receiving ring 3 and the pressure ring 5 are each circular and differ only in their diameter.
  • the inside diameter of the receiving ring 3 essentially corresponds to the outside diameter of the workpiece 7 to be machined, which is not specifically shown in FIG. 2, a movement clearance between the two diameters being required for mounting and removal.
  • the radial extent of the stamping dies 4 is greater than the radial thickness of the receiving ring 3, in which the stamping dies 4 are guided in a radially displaceable manner by means of guide surfaces 41 and sliding guides 31.
  • the radial extent of the stamping dies 4 exceeds the radial thickness of the receiving ring at least by the amount of the depth of the contour to be generated on the outer peripheral region 71 of the workpiece 7.
  • the inner diameter of the pressure ring 5 is in turn selected so that it rests on the back surfaces 42 of the embossing dies 4 in a concentric arrangement with the receiving ring 3 in such a way that the end face 40 of the stamping dies 4 is flush with the inner peripheral surface 32 of the receiving ring 3.
  • the end faces 40 of the embossing dies 4 are returned in the radial direction outward behind the inner circumferential surface 32 of the receiving ring 3 by an amount corresponding to the contouring depth.
  • the connecting line of the end faces 40 of all embossing dies 4 is shown in this figure as a dot-dash circle.
  • the inner circumferential surface 52 of the pressure ring 5 is constantly in contact with the back surfaces 42 of all the stamping dies 4, as a result of which the stamping dies 4 participate in the eccentric rotation of the pressure ring 5.
  • the stamping dies 4 easily have different shapes, e.g. can have different extents in the circumferential direction or in the axial direction.
  • FIG. 3 of the drawing shows a modified version of the device 1, the parts of this device 1 in their modified version being provided with the reference numbers which correspond to the same parts of the previously described version of the device 1.
  • the workpiece holder 12 is partially visible, to which the workpiece 7 with its central hub part 70, its outer circumferential V-belt groove 72 and its cylindrical outer peripheral region 71 adjoins at the bottom.
  • the second workpiece holder 22 of the second spindle 21 is again visible below the workpiece 7.
  • the receiving ring 3 surrounding it, which, in contrast to the previously described embodiment of the device 1, is designed with two sliding guides 31 and 31 ', the upper sliding guide 31 for receiving the die 4 and the lower sliding guide 31 'used to hold a second stamp 4'.
  • the pressure ring 5 then follows radially outward, again here between the receiving ring 3 and the pressure ring 5 the support ring 6 is arranged.
  • the force device 60 here consists of an elastically compressible annular body, which is arranged between an outer surface of the receiving ring 3 and an inner surface of the support ring 6.
  • the embossing dies 4 arrive as described previously in the first embodiment of the device 1 , in contrast to the cylindrical outer peripheral region 71 of the workpiece 7, while the lower embossing die 4 'comes in opposition to the lower flank of the V-shaped V-belt groove 72 in FIG. 3 and generates a notch mark 75 there.
  • the lower workpiece holder 22 is provided with a suitable negative contour 23, in this case a recess, at the corresponding point on its outer circumference.
  • FIG. 4 finally shows a front view of a workpiece 7 produced using the device 1 described above and the associated method for operating the device.
  • the central part of the workpiece 7 is formed by the hub part 70 with a central opening 70 ', e.g. to accommodate an axis.
  • the V-belt groove 72 which is concealed here, and the cylindrical outer peripheral region 71, which is already provided with a tooth-shaped contour, which serves as an incremental toothing, then follow radially outward.
  • the increment toothing 73 consists of individual molded-in depressions, a flattening 74 as a special marking occurring once in the course of the circumference of the workpiece 7.
  • the individual marking 75 is made in the form of a notch, which e.g. serves as an assembly or adjustment mark.
  • the teeth or recesses of the toothing 73 in the outer circumferential region 71 are distributed at a uniform distance over the entire circumference of the workpiece 7, but are shown in FIG. 4 only over a partial region of the circumference for reasons of simplification of the drawing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP90112026A 1990-06-25 1990-06-25 Dispositif pour produire des contours formés sur le pourtour de pièces à symétrie de révolution en tôle et procédé pour utiliser ce dispositif Withdrawn EP0463200A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP90112026A EP0463200A1 (fr) 1990-06-25 1990-06-25 Dispositif pour produire des contours formés sur le pourtour de pièces à symétrie de révolution en tôle et procédé pour utiliser ce dispositif
US07/717,094 US5133204A (en) 1990-06-25 1991-06-18 Apparatus for producing sunken shapes on the outer circumference of rotationally symmetrical sheet-metal workpieces and a method for producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90112026A EP0463200A1 (fr) 1990-06-25 1990-06-25 Dispositif pour produire des contours formés sur le pourtour de pièces à symétrie de révolution en tôle et procédé pour utiliser ce dispositif

Publications (1)

Publication Number Publication Date
EP0463200A1 true EP0463200A1 (fr) 1992-01-02

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ID=8204135

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112026A Withdrawn EP0463200A1 (fr) 1990-06-25 1990-06-25 Dispositif pour produire des contours formés sur le pourtour de pièces à symétrie de révolution en tôle et procédé pour utiliser ce dispositif

Country Status (2)

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US (1) US5133204A (fr)
EP (1) EP0463200A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0552776A1 (fr) * 1992-01-24 1993-07-28 AGLA S.p.A. Procédé de roulage pour la fabrication de poulies à gorge unique ou multiple en forme de V et à roue phonique intégrale
DE19718180A1 (de) * 1997-04-29 1998-02-19 Leico Werkzeugmaschb Gmbh & Co Verfahren und Vorrichtung zur Herstellung eines Getriebeteiles mit einer Außenverzahnung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT406836B (de) * 1997-10-30 2000-09-25 Miba Sintermetall Ag Verfahren und vorrichtung zum herstellen eines zahnrades

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121352A (en) * 1961-05-18 1964-02-18 Michigan Tool Co Tooth forming method and apparatus
FR2320798A1 (fr) * 1975-08-11 1977-03-11 Escofier Et Cie Machine a canneler ou denter par deformation a froid
DE3711927C1 (en) * 1987-04-13 1988-10-13 Leifeld & Co Method for the production of metal hollow bodies with profiles running in the axial direction on their outer circumference, especially teeth, and an apparatus for carrying out the method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1873164A (en) * 1930-01-06 1932-08-23 Guide Lamp Corp Manufacture of sheet metal ware
US2692004A (en) * 1952-10-31 1954-10-19 William F Matheny Apparatus for crimping malleable strips
US3396563A (en) * 1965-10-21 1968-08-13 Fellows Gear Shaper Co Method of forming profiled objects
US3473211A (en) * 1966-09-16 1969-10-21 Oswald J Lindell Method of forming teeth on a tubular member

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3121352A (en) * 1961-05-18 1964-02-18 Michigan Tool Co Tooth forming method and apparatus
FR2320798A1 (fr) * 1975-08-11 1977-03-11 Escofier Et Cie Machine a canneler ou denter par deformation a froid
DE3711927C1 (en) * 1987-04-13 1988-10-13 Leifeld & Co Method for the production of metal hollow bodies with profiles running in the axial direction on their outer circumference, especially teeth, and an apparatus for carrying out the method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0552776A1 (fr) * 1992-01-24 1993-07-28 AGLA S.p.A. Procédé de roulage pour la fabrication de poulies à gorge unique ou multiple en forme de V et à roue phonique intégrale
DE19718180A1 (de) * 1997-04-29 1998-02-19 Leico Werkzeugmaschb Gmbh & Co Verfahren und Vorrichtung zur Herstellung eines Getriebeteiles mit einer Außenverzahnung
DE19718180C2 (de) * 1997-04-29 1999-03-18 Leico Werkzeugmaschb Gmbh & Co Verfahren und Vorrichtung zur Herstellung eines Getriebeteiles mit einer Außenverzahnung

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US5133204A (en) 1992-07-28

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