EP1125655A2 - Méthode et dispositif pour faire une denture externe sur une pièce supportée de manière à pouvoir tourner - Google Patents

Méthode et dispositif pour faire une denture externe sur une pièce supportée de manière à pouvoir tourner Download PDF

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Publication number
EP1125655A2
EP1125655A2 EP01102738A EP01102738A EP1125655A2 EP 1125655 A2 EP1125655 A2 EP 1125655A2 EP 01102738 A EP01102738 A EP 01102738A EP 01102738 A EP01102738 A EP 01102738A EP 1125655 A2 EP1125655 A2 EP 1125655A2
Authority
EP
European Patent Office
Prior art keywords
workpiece
tool
axis
rotation
forming tool
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Withdrawn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
EP01102738A
Other languages
German (de)
English (en)
Other versions
EP1125655A3 (fr
Inventor
Uwe Tittmann
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.)
PSW Press und Schiedewerk GmbH
Original Assignee
PSW Press und Schiedewerk GmbH
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 PSW Press und Schiedewerk GmbH filed Critical PSW Press und Schiedewerk GmbH
Publication of EP1125655A2 publication Critical patent/EP1125655A2/fr
Publication of EP1125655A3 publication Critical patent/EP1125655A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • 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
    • B21H5/027—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls by rolling using reciprocating flat dies, e.g. racks
    • 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
    • Y10T29/49462—Gear making
    • Y10T29/49467—Gear shaping
    • Y10T29/49471—Roll forming

Definitions

  • the invention relates to a method for producing the Clutch teeth on gear wheels of manual transmissions (Fig.1).
  • Gears with such clutch teeth are used, for example, in manually shifted transmissions. They are usually rotatably mounted on the gear shaft. Torque transmission from and to the transmission shaft is only possible when a shift sleeve is moved axially and engages in the clutch teeth.
  • the undercut on the external toothing prevents the gearshift sleeve from disengaging while driving.
  • the coupling teeth of these gearwheels should generally have a special geometry for easy engagement of the gearshift sleeve as well as external teeth with an axial undercut for safe torque transmission from and to the gearshift sleeve.
  • a cutting tool such as a cutting wheel, performs an oscillating movement at a slight angle to the longitudinal axis of the gear and a feed movement radially to it out.
  • gear and tool lead one Rotational movement so that by passing on the two Body under chip removal with the required involute shape Undercut is created.
  • Another method is that a separate one Sheet metal disc is made, such a toothing carries and this sheet metal disc to the gear body is welded on.
  • the gearing in the Usually introduced by fine stamping.
  • DE 22 54 460 describes a method and a device for manufacturing clutch gears with anti-tamper protection known.
  • a roller wheel with a clutch gear is closed brought a rolling process, the axes of the roller and of the clutch gear are aligned in parallel.
  • DE 198 09 039 A1 also describes a method for Applying undercuts to individual tooth flanks in an internal toothing of sliding sleeves known. Doing so the metallic material by means of plastic deformation Rear rollers and / or presses deformed, so that at the individual tooth flank to be undercut, both partial surfaces with as well as to the former adjacent partial areas without Pull-out lock function are preformed and then at Undercutting plasticized material from the areas the partial areas with locking function out and in as Recess of the areas is pushed in without the locking function.
  • the device comprises a rotatably mounted spindle on which the workpiece is clamped by means of a chuck.
  • This spindle is rotated together with the chuck and the workpiece.
  • Forming tools in the form of externally toothed rollers, linearly movable toothed racks or internally toothed ring gears are engaged with the workpiece and brought to a rolling motion on the workpiece. Subsequent at least radial and possibly axial movement of these tools towards the workpiece initiates a rolling forming of the workpiece.
  • the axial feed movement or the combined axial / radial feed movement is required if the axes of rotation of the workpiece and the tool run parallel to one another in order to produce the undercut.
  • the rotary movement can take place by driving the spindle or by driving the forming tool. What is important is the infeed of the forming tool associated with the rolling of the tooth profile.
  • axial is used for the term Direction addressed parallel to the workpiece axis in the workpiece axis of rotation. Accordingly, as one viewed purely radial direction a direction that is radial to Workpiece axis of rotation runs. A combined radial and The corresponding axial direction is then when the Tool moved in the direction of the workpiece axis being followed by a direction followed by a pure radial and a purely axial direction is spanned.
  • the invention is based on the idea of intermeshing Undercut on a gearwheel using a forming process manufacture, using a segment tool is circumvented. Segment tools are particularly so far unfavorable that a pressing process with segments usually with high tolerances. On the other hand, it does Undercut impossible, ordinary, linear presses to use. At the same time, if possible, a special one Geometry is generated on the front of the gear that enables easy engagement of the gearshift sleeve. A is such a geometry that allows easy snapping into place e.g. B. a roof-shaped design of the front or a arched rounding.
  • An axial Infeed movement in addition to the radial movement can omitted if the axes of rotation of the tool and the Workpiece do not run parallel to each other. Still is it is possible that the tool additionally has a movement that is perpendicular to the plane defined by the Axis of rotation and the direction of the infeed movement is spanned.
  • this further Forming tool can serve a special inlet geometry, e.g. B. Roof shape to shape on the tooth flanks.
  • a second forming tool can serve a special inlet geometry, e.g. B. Roof shape to shape on the tooth flanks.
  • the first forming tool when the axial undercut and the inlet geometry support.
  • This special inlet geometry makes it easier the engagement of a shift sleeve.
  • a second tool can be used with the first forming tool or used after or before him in chronological order become.
  • the second forming tool z. B. is used to park an inlet geometry that the Reshaping the inlet geometry at the same time as shaping the undercut tooth flanks is performed, or in sequential successive steps.
  • the tool or the tools for attaching the inlet geometry e.g. B. Roof shape, also lead to a reshaping Rotational movement around an axis of rotation.
  • the axis of rotation usually runs in depending on the inlet geometry an angle to the axis of rotation of the gear blank, the is greater than 0 °.
  • the forming tool also leads a generally radial infeed movement.
  • At the Forming process for generating the inlet geometry is also a translational motion component in the Delivery movement of the second forming tool included that is parallel to the axis of rotation of the gear blank.
  • the method of manufacturing the gear with an axial undercut area in which an external toothing has undercut tooth flanks after a preferred embodiment the step of preforming the Teeth in the undercut area before the final one Forming processes include.
  • This is advantageous in that in the case of rough preforming of the toothing, the final one Forming is less expensive and therefore less time claimed. Furthermore, is usually in the described Forming a rough preforming and a subsequent one Forming is more cost-effective than designing the Gearing in the undercut area from one not preformed, circular blank.
  • the device is designed so that a Drive device the gear blank during the Machining drives.
  • the design is such that a tensioning device sets in a rotational movement is, and thus the clamped on the clamping device Gear blank is moved. It is when driving the Clamping device for the gear blank possible, that or that Passively move tools with a rolling motion. So it is not necessary to use the tools, at least what affects the rotational movement of the tools independently to drive.
  • the tools or the delivery device the tools are attached must be appropriate mechanism to be able to at least radial and possibly axial infeed movement, which at the method according to the invention is necessary to execute
  • Embodiment a drive device for the or Forming tools provided.
  • the Drive devices for the forming tools in addition to the drive device for the clamping device and thus the workpiece are provided, or on the other hand that the Drive device for the forming tool or Forming tools are provided without one Provide drive device for the tensioning device.
  • a Synchronization device provided that enables and ensures that the rotational movements of the tool and the Gear blanks run synchronously with each other. Otherwise can passively pass the workpiece through a rolling motion between Tool and workpiece can be moved.
  • Two separate ones Drive devices have the advantage that the Delivery device for the same drive device Execution of the feed movement can be driven. In this case, however, the synchronous rotary movement is necessary between workpiece and tool. At a passive taking of either the tool or the The workpiece due to the other element is omitted Need for a synchronization facility.
  • the first forming tool is advantageously a roller, which has an outer profile.
  • the outer profile is as Counterpart to the desired gear profile.
  • a profiled roller for forming the toothing is on the one hand good to produce, on the other hand in a corresponding Easy to install device.
  • a profiled roller also called a gear roller
  • the axis of rotation of the roller or rollers can be both parallel as well as at an angle to the axis of rotation of the Workpiece run.
  • the first is Forming tool a hollow roller.
  • the Hollow roller profiling on its inner surface, which is why ensure that the corresponding desired toothing in the Gear blank is pressed.
  • it is not possible to remove the workpiece can be processed simultaneously with a second tool.
  • it is not favorable attaching several first tools, which affects has the processing time.
  • An inlet geometry can a hollow roller advantageous through an arrangement of the axes of the workpiece and the tool can be achieved when the Axes are not parallel to each other.
  • Fig. 1 shows a cross section of a one-piece gear with integrated clutch teeth. (14).
  • the tooth shape of such a coupling toothing can be clearly seen in the side view in FIG. 2.
  • the roof shape pointing to the right enables the gearshift sleeve to be snapped into place.
  • the tooth (undercut) tapers to the left thus enables the shift sleeve to be held securely in the Driving operation.
  • the terms "right”, “left” refer to thereby on the figures and are purely illustrative and not to be understood as limiting.
  • Fig. 3 shows an enlarged tooth shape Coupling teeth, whereby the tooth tapers in each case. It are two different inlet geometries, namely one rounded tooth face and a roof-shaped Tooth face shown.
  • FIG. 4 shows an example of an embodiment of a device for producing a gearwheel with the geometric configuration, as shown in FIGS. 1 and 2.
  • the device comprises a spindle 22 which is rotatably mounted about the axis X and a tailstock 24 which form a clamping device and by means of which the gear blank 10 is clamped.
  • a first tool 26 is rotatably supported about an axis Y1 by means of a roller bearing 28. This assembly can be moved radially to the workpiece by an infeed device not shown here.
  • the axis Y1 is essentially parallel to the axis of rotation X.
  • the tool 26 is designed as a roller which has a profile on the outer circumference which is suitable for molding the external toothing, in particular its undercut area, on the workpiece.
  • a second tool 30 is also supported the roller bearing 32, not provided here drawn delivery device.
  • the axis of rotation of this Tool is at an angle ⁇ to the axis of rotation of the spindle.
  • the infeed movement of the tools 26 and 30 can take place both radially and axially.
  • the drive for the rotational movement of the workpiece and tools can be carried out either by a driven spindle or by means of driven tools.
  • a first and a second forming tool provided.
  • a first and a second forming tool may allow multiple tools to be used first or second type or only 1 tool of the first or second type to use.
  • Other suitable tools can also be used be used. Examples of these are shown in FIGS. 5 to 7 shown.
  • Fig. 5 and Fig. 6 show a ring gear, which has a rotary movement executes about an axis of rotation Y3 which is parallel to the axis of rotation of the Workpiece X is.
  • the axes of rotation can also be under are at an angle of 0 ° ⁇ ⁇ 360 ° to each other.
  • the ring gear 34 has one on its inner circumference Profileing 35, which essentially helps the desired toothing on the workpiece 10 by reshaping produce. In this case, the delivery movement takes place in the essentially in the radial direction with respect to Rotation axes X and Y3 are carried out.
  • a tool 36 is shown which is designed in the form of a toothed rack. This executes a linearly oscillating movement, the movement vectors lying in a plane that is essentially perpendicular to the axis of rotation X of the gear blank 10. Due to the rotary movement of the gear blank with simultaneous linear movement of the rack, combined with a simultaneous radial infeed of the rack towards the workpiece, a rolling forming with formation of the teeth is achieved.
  • a second rack 38 opposite the first can be used to support the part and increase productivity.
  • the essential aspect of the method and the device of the invention is that by a Rolling motion of a profiled tool simultaneous radial infeed for manual transmissions required tooth shape with bevel and undercut is inexpensive to manufacture with simple tools.
EP01102738A 2000-02-08 2001-02-07 Méthode et dispositif pour faire une denture externe sur une pièce supportée de manière à pouvoir tourner Withdrawn EP1125655A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10005438 2000-02-08
DE10005438A DE10005438A1 (de) 2000-02-08 2000-02-08 Verfahren und Vorrichtung zur Herstellung von Kupplungsverzahnungen an Gangrädern für Schaltgetriebe

Publications (2)

Publication Number Publication Date
EP1125655A2 true EP1125655A2 (fr) 2001-08-22
EP1125655A3 EP1125655A3 (fr) 2002-07-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01102738A Withdrawn EP1125655A3 (fr) 2000-02-08 2001-02-07 Méthode et dispositif pour faire une denture externe sur une pièce supportée de manière à pouvoir tourner

Country Status (4)

Country Link
US (1) US6494072B2 (fr)
EP (1) EP1125655A3 (fr)
JP (1) JP2001287117A (fr)
DE (1) DE10005438A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE523272T1 (de) 2002-01-17 2011-09-15 Quide B V Verfahren und formmaschine zur herstellung eines produkts mit variierendem durchmesser
JP4671221B2 (ja) 2005-03-14 2011-04-13 東洋精器株式会社 ギヤ転造装置
DE102007044283A1 (de) * 2007-09-07 2009-03-12 Ex-Cell-O Gmbh Werkzeugmaschine zur Herstellung von Verzahnungen an Werkstücken und Verfahren zur Herstellung einer Verzahnung an einem Werkstück mittels einer Werkzeugmaschine
AT507738B1 (de) * 2008-12-16 2011-03-15 Miba Sinter Austria Gmbh Verfahren zur hinterlegung der innenverzahnung einer pulvermetallurgisch hergestellten schiebemuffe für ein schaltgetriebe
DE102014108438A1 (de) * 2014-06-16 2015-12-17 Profilator Gmbh & Co. Kg Verfahren zum Einarbeiten von Hinterlegungen in Zahnflanken der Zähne von Zahnrädern
CN109663991B (zh) * 2019-01-22 2020-06-05 南京工大数控科技有限公司 一种考虑齿面精度特性的渐开线圆柱齿轮包络铣削加工方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2206443A (en) * 1935-10-11 1940-07-02 Packard Motor Car Co Apparatus for forming toothed elements
GB906651A (en) * 1958-01-28 1962-09-26 Zahnradfabrik Friedrichshafen A new or improved method of and apparatus for the production of internal or externalprofileson clutch teeth for stepped change-speed gears
DE1293122B (de) * 1964-05-16 1969-04-24 Erdelyi Ferenc Walzvorrichtung zum Herstellen oder Korrigieren von Verzahnungen auf zylindrischen Werkstuecken
US4712408A (en) * 1985-09-23 1987-12-15 Anderson-Cook, Inc. Coarse pitch spline rolling
DE4335505C1 (de) * 1993-10-19 1994-08-25 Wf Maschinenbau Blechformtech Vorrichtung zur Herstellung eines außen verzahnten Getriebeteiles
EP0925857A2 (fr) * 1997-12-26 1999-06-30 Metalart Corporation Roue dentée de vitesse, et procédé et dispositif pour sa fabrication
DE19809039A1 (de) * 1998-03-04 1999-09-09 Sinterstahl Gmbh Verfahren zum Hinterrollen von Zahnflanken

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1275144A (en) * 1969-08-25 1972-05-24 Prec Gear Machines & Tools Ltd Improvements in or relating to methods of rolling or finishing teeth on workpieces
US3681962A (en) * 1969-12-01 1972-08-08 Rotary Profile Anstalt Apparatus for rolling rings
US3717019A (en) * 1971-02-25 1973-02-20 Lear Siegler Inc Rolling of gear locks
JPH02224840A (ja) * 1988-09-29 1990-09-06 Aisin Seiki Co Ltd 歯車転造装置
DE4211472A1 (de) 1992-04-06 1993-10-07 Winkelmann & Pannhoff Gmbh Antriebsrad für ein Kraftfahrzeug
US6076387A (en) * 1996-05-02 2000-06-20 Wdb Ringwalztechnik Gmbh Process for rolling bevel gears on an axial stamping rolling machine and tooling for its implementation
DE19624772C2 (de) 1996-06-21 2000-06-29 Blw Praezisionsschmiede Gmbh Klauenverzahnung für Schaltgetriebe oder dergleichen
JP3040100B1 (ja) * 1998-12-25 2000-05-08 アイシン機工株式会社 円板状素材の外周部増肉方法
JP3377974B2 (ja) * 2000-01-12 2003-02-17 サムテック株式会社 外歯を有する成形品の成形方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2206443A (en) * 1935-10-11 1940-07-02 Packard Motor Car Co Apparatus for forming toothed elements
GB906651A (en) * 1958-01-28 1962-09-26 Zahnradfabrik Friedrichshafen A new or improved method of and apparatus for the production of internal or externalprofileson clutch teeth for stepped change-speed gears
DE1293122B (de) * 1964-05-16 1969-04-24 Erdelyi Ferenc Walzvorrichtung zum Herstellen oder Korrigieren von Verzahnungen auf zylindrischen Werkstuecken
US4712408A (en) * 1985-09-23 1987-12-15 Anderson-Cook, Inc. Coarse pitch spline rolling
DE4335505C1 (de) * 1993-10-19 1994-08-25 Wf Maschinenbau Blechformtech Vorrichtung zur Herstellung eines außen verzahnten Getriebeteiles
EP0925857A2 (fr) * 1997-12-26 1999-06-30 Metalart Corporation Roue dentée de vitesse, et procédé et dispositif pour sa fabrication
DE19809039A1 (de) * 1998-03-04 1999-09-09 Sinterstahl Gmbh Verfahren zum Hinterrollen von Zahnflanken

Also Published As

Publication number Publication date
JP2001287117A (ja) 2001-10-16
DE10005438A1 (de) 2001-08-16
US20010025520A1 (en) 2001-10-04
EP1125655A3 (fr) 2002-07-31
US6494072B2 (en) 2002-12-17

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