EP0921879A1 - Process and device for manufacturing a gear part with outer teeth - Google Patents

Process and device for manufacturing a gear part with outer teeth

Info

Publication number
EP0921879A1
EP0921879A1 EP96937179A EP96937179A EP0921879A1 EP 0921879 A1 EP0921879 A1 EP 0921879A1 EP 96937179 A EP96937179 A EP 96937179A EP 96937179 A EP96937179 A EP 96937179A EP 0921879 A1 EP0921879 A1 EP 0921879A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
toothed roller
toothed
roller
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.)
Granted
Application number
EP96937179A
Other languages
German (de)
French (fr)
Other versions
EP0921879B1 (en
Inventor
Udo Friese
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.)
WF Maschinenbau und Blechformtecknik GmbH and Co KG
Original Assignee
WF Maschinenbau und Blechformtecknik GmbH and Co KG
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
Priority claimed from DE19635152A external-priority patent/DE19635152A1/en
Application filed by WF Maschinenbau und Blechformtecknik GmbH and Co KG filed Critical WF Maschinenbau und Blechformtecknik GmbH and Co KG
Publication of EP0921879A1 publication Critical patent/EP0921879A1/en
Application granted granted Critical
Publication of EP0921879B1 publication Critical patent/EP0921879B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/02—Making articles shaped as bodies of revolution discs; disc wheels
    • B21H1/04—Making articles shaped as bodies of revolution discs; disc wheels with rim, e.g. railways wheels or 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
    • Y10T29/49462—Gear making
    • Y10T29/49467—Gear shaping
    • Y10T29/49471—Roll forming

Definitions

  • the invention relates to a method for producing an externally toothed gear part according to the preamble of the main claim and to a device for carrying out the method according to the preamble of claims 4 and 6
  • External toothed gears are large, for example, as flywheels for manual transmissions or starters in motor vehicle construction
  • flywheels being of two parts.
  • the flywheel washer was made from cold-formed sheet metal and the external teeth were formed in a separate ring by means of machining. The ring was then welded to the flywheel washer the disadvantage that it is costly and that material changes are entered into the flywheel by the welding process, which are not fully visible
  • the relevant edge area is thickened by means of suitable sheet metal forming methods such as compression or the like before the external toothing is formed, as a result of which structural changes are introduced into the material.
  • suitable sheet metal forming methods such as compression or the like
  • an inevitable hardening occurs, which for the the subsequent machining process is disadvantageous.
  • the formation of the tooth is then carried out by hammering in the tooth according to a process which is also part of the prior art.
  • This second-mentioned procedure also has the disadvantage that the tooth flanks can occur again and again are not sufficiently stable, so that breaking of the teeth can occur at high loads.
  • the known arrangement has the disadvantage that the teeth are not only on the outside of the
  • Edge area of the round blank are formed, but also a tooth-like corrugation of this edge area takes place to the rear of the interior of the round blank, so that this causes a considerable noise development when the wheel rotates
  • a method for producing a gear wheel in which the toothed roller rotates about an axis which is in the circumferential direction of the workpiece to be machined and in which the shaping work is broken down into a large number of individual shaping sections, ie the tooth are hammered into the edge of the workpiece so that the structure is destroyed, ie the grain of the metal is destroyed and later breaks can occur
  • Thickness corresponds to the wall thickness of the hub surface
  • EP-A-343 314 describes a method for producing a
  • a pulley is described in which a metal disk is bordered in its peripheral region and the bordering is then flattened to form a bearing surface, in which case circumferential grooves are then machined into the bearing surface formed in this way, or it is also possible to introduce transverse toothing in this bearing surface, so that a cross-toothed pulley is created.
  • the material of the border is already compressed to form the contact surface, special requirements are placed on the production of the toothing, i.e. the toothing is introduced into a compressed metal part
  • the invention has for its object to provide a method and an apparatus with which the synchronization of
  • a toothed roller which can be freely rotated as such is used as the form roller, but which does not move in the radial direction towards the spindle advancement axis X - X during the formation of the tooth, but rather in a fixed manner to the axis X - X is positioned so that the teeth to be formed are not pressed into the workpiece by the toothed roller, but rather the material of the workpiece flows into the toothed roller.
  • a round blank is thickened in its edge region, the thickening then being caused by pressure rollers moving towards one another can be pressed into the tooth space of the toothed roller as a form roller or a round blank can also be used, which is only pressed together in its edge region by the two pressure rollers, the material being pressed into the teeth of the form roller when pressed together.
  • a workpiece can be used, for example, as a sprocket
  • Bicycle are used Finally, it is possible to start from a preference whose edge region, ie the cylindrical pot region of the preference, is formed by collapses, the material being able to flow into the spaces of the teeth of the toothed roller during the collapse
  • FIG. 1 shows a diagram, but relatively schematically, of an arrangement for forming a toothed Get ⁇ ebe- part from a blank in the initial state, in
  • FIG. 2 shows the arrangement according to FIG. 1 after the edge region of the round blank is thickened
  • FIG. 3 the arrangement according to FIGS. 1 and 2 after the
  • Form roll has moved up to the outer circumference of the thickened blank and in
  • Fig. 4 in a partially sectioned representation of the compressed pressure rollers and the toothed edge area pressed into the tooth spaces of the toothed roller, in Fig. 5 schematically an embodiment with an inserted preference as a workpiece and in Fig. 6 a representation according to Fig. 5, in which the
  • Edge area of the preference collapses and is inserted into the tooth spaces of the form roller
  • a spindle is shown at 1 and a lift-off attachment is shown at 2.
  • the spindle 1 carries on its upper side a workpiece 3 which is designed as a round plate 8.
  • At 4 is a border which can be approached to the workpiece 3 in the direction of arrow F 4 - Or crushing roller shown
  • a toothed roller 5 can be moved towards the workpiece 3 in the direction of arrow F 5 but wherein the toothed roller 5 is freely rotatable about its axis 14 in corresponding carriers 15 and 16
  • two pressure rollers 6 and 7 are shown, which are movable towards and away from one another in the direction of the arrows F 6 and F 7 , as shown in Fig. 1, but other shapes are also possible.
  • Compression roller 4 can be designed so that the thickening achieved is symmetrical to the plane of the round blank 8 or is designed on one side or the other, depending on which shape of the gear wheel is to be achieved. This is the case, for example, when a starter ring is to be produced , the
  • Thickening designed so that the sprocket formed extends substantially perpendicular to one or the other side of the hub surface of the gear part.
  • the sprocket formed can also be aligned centrally to the hub surface of the gear part
  • FIG. 3 shows that, as the next step, the toothed roller 5 has moved towards the outer circumference of the thickened circular blank 8 in the radial direction and touches it. In the further working process, however, the toothed roller 5 remains in this position, ie it does not enter the material of the circular blank 8 move in If, as can be seen from FIG. 4, the thickened edge region of the round blank 8 is pressed together by the pressure rollers 6 and 7, the material of the thickened edge region of the round blank 8 flows into the spaces between the above
  • Fix workpiece 3 which is designed as a preference 9
  • the preference 9 is therefore a cylindrical, pot-shaped part, the outer edge edges of which are centered in a collapse ring 10 which can be moved in the direction of the arrow F ⁇ 0 in FIG. 5 radial delivery one or more
  • Target kinks also called collapse lines 18 and 19
  • the top of the workpiece 3 is supported by a support roller 12, but it is also possible that the attachment 2 has such a size that it also serves as a support roller for the peripheral edges of the preference 9.
  • Two or more support rollers can also be provided Toothed roller shown If, as shown in FIG. 6, the pot-shaped edge area of the preference 9 is collapsed by the collapse ring 10, it bulges outward - as shown in FIG.
  • the teeth are formed by being molded into the roller, which is rotatable but is fixed in the direction of the advancement spindle axis X - X by continuously adjusting the collapse ring 10 to the end position, the teeth are formed in this way
  • Clarification of the work processes are additional jerk-shark rolls to avoid degrees and additional support rolls to prevent the material from evading during the molding processes can of course be provided.
  • the receiving tool can be optimally adapted to the workpiece to be achieved and the respective process step.
  • the receiving tool can be optimally adapted to the workpiece to be achieved and the respective process step.
  • several bordering or thickening rolls can be used

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)
  • Forging (AREA)
  • Pulleys (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

A process is disclosed for manufacturing a gear part with outer teeth from a metallic workpiece shaped as a circular blank or predrawing. The gear part has a hub surface with outward projecting teeth. The workpiece is flattened in its circumferential area and the teeth are formed without cutting in a toothed roller (5) mounted in a freely rotary manner. While the teeth are formed by flattening the workpiece, the toothed roller (5) is fixed in the radial direction so as to not move towards the feeding axis of the spindle. The edge of a circular blank may be curled or thickened or the cylindrical edge of a pot-shaped predrawing may be collapsed.

Description

"Verfahren und Vorrichtung zur Herstellung eines außen verzahnten Getriebeteiles""Method and device for producing an externally toothed gear part"
Die Erfindung bezieht sich auf ein Verfahren zur Herstellung eines außen verzahnten Getriebeteiles gemäß dem Oberbegriff des Hauptanspruches und auf eine Vorrichtung zur Durchfuhrung des Verfahrens gemäß dem Oberbegriff des Anspruches 4 und 6The invention relates to a method for producing an externally toothed gear part according to the preamble of the main claim and to a device for carrying out the method according to the preamble of claims 4 and 6
Außenverzahnte Getriebe sind z B als Schwungrader für Schaltgetriebe oder Anlasser im Kraftfahrzeugbau in großemExternal toothed gears are large, for example, as flywheels for manual transmissions or starters in motor vehicle construction
Umfang im Einsatz Bisher wurden derartige Getπebeteile entweder dadurch hergestellt, daß z B die Schwungrader zweiteilig ausgebildet waren Hierbei wurde die Schwungradscheibe aus kaltverformtem Blech hergestellt und die Außenverzahnung in einem gesonderten Ring mittels spanabhebender Formung gebildet Der Ring wurde dann an der Schwungradscheibe angeschweißt Diese bekannte Anordnung hat den Nachteil, daß sie kostenaufwendig ist und daß durch das Schweißverfahren Matenalveranderungen in das Schwungrad eingetragen werden, die nicht voll zu überblicken sindExtent in use So far, such parts have been manufactured either by, for example, the flywheels being of two parts. Here, the flywheel washer was made from cold-formed sheet metal and the external teeth were formed in a separate ring by means of machining. The ring was then welded to the flywheel washer the disadvantage that it is costly and that material changes are entered into the flywheel by the welding process, which are not fully visible
Um das Gesamtgewicht eines Getriebeteiles bei ausreichender Festigkeit sowohl im Scheibenbereich als auch im Bereich der Außenverzahnung herabzusetzen, ist bereits in der EP-0 333 917 A2 vorgeschlagen worden, daß die Außenverzahnung aus einem vor deren Formung gegenüber dem Blechrohling verdick- ten Randbereich desselben gebildet ist, derart, daß der Querschnitt der Außenverzahnung großer ist als der Querschnitt einer entsprechend langen Ringzone mit der Blechstarke des BlechrohlingsIn order to reduce the total weight of a gear part with sufficient strength both in the disk area and in the area of the external toothing, it has already been proposed in EP-0 333 917 A2 that the external toothing thickened from the sheet metal blank before it was formed. th edge area of the same is formed such that the cross section of the external toothing is larger than the cross section of a correspondingly long ring zone with the sheet thickness of the sheet metal blank
Hierzu wird vor der Formung der Außenverzahnung der betreffende Randbereich mittels geeigneter Blech verformungsverfahren, wie Stauchung od dgl verdickt, wodurch Gefugeande- rungen in das Material eingetragen werden Da für diese Ge- tπebeteile üblicherweise Kohlenstoffstahl eingesetzt wird, tritt eine zwangsläufige Härtung ein, die für das nachfolgende Bearbeitungsverfahren nachteilig ist Die Ausbildung der Zahne wird bei dieser Ausfuhrungsform dann durch ein Einhämmern der Zahne nach einem ebenfalls zum Stand der Technik gehoren- den Verfahren durchgeführt Diese zweitgenannte Verfahrungs- weise hat weiterhin den Nachteil, daß es immer wieder vorkommen kann, daß die Zahnflanken nicht ausreichend tragfahig sind, so daß bei hohen Belastungen ein Brechen der Zahne auftreten kann Außerdem hat die bekannte Anordnung den Nachteil, daß die Zahne nicht nur auf der Außenseite desFor this purpose, the relevant edge area is thickened by means of suitable sheet metal forming methods such as compression or the like before the external toothing is formed, as a result of which structural changes are introduced into the material. Because carbon steel is usually used for these parts, an inevitable hardening occurs, which for the the subsequent machining process is disadvantageous. In this embodiment, the formation of the tooth is then carried out by hammering in the tooth according to a process which is also part of the prior art. This second-mentioned procedure also has the disadvantage that the tooth flanks can occur again and again are not sufficiently stable, so that breaking of the teeth can occur at high loads. In addition, the known arrangement has the disadvantage that the teeth are not only on the outside of the
Randbereiches der Ronde ausgebildet sind, sondern auch nach hinten zum Innenraum der Ronde eine zahnartige Wellung dieses Randbereiches erfolgt, so daß hierdurch bei Umlauf des Rades eine ganz erhebliche Gerauschentwicklung eintrittEdge area of the round blank are formed, but also a tooth-like corrugation of this edge area takes place to the rear of the interior of the round blank, so that this causes a considerable noise development when the wheel rotates
Aus der EP-0 140 576 A1 ist ein Schwungrad bekanntgeworden, das aus einem Preßteil, d h einem Vorzug, hergestellt wird, wobei die an der Außenseite eines sich axial erstreckenden Teiles vorgesehenen Zahne durch Walzen hergestellt wer- den Die Zeichnung zeigt dieses Bauteil so, als ob der Innenkranz der Zahne glatt ausgebildet ist Dieses Verfahren hat den Nachteil, daß von einem Vorzug ausgegangen wird, wobei die Wandstarke des sich axial erstreckenden zylindrischen Bereiches genau der Wandstärke der Nabenflache entspricht, so daß entweder der Fußkranz des Zahnkranzes zu dünn und zu schwach ist, so daß ein Brechen der Zahne eintreten kann oder aber die Nabenflache ist zu dick, so daß hier eine Materialverschwendung und eine unerwünschte Gewichtserhöhung eintrittFrom EP-0 140 576 A1 a flywheel has become known which is manufactured from a pressed part, ie a preferred part, the teeth provided on the outside of an axially extending part being produced by rolling. The drawing shows this component in such a way that as if the inner ring of the tooth is smooth This method has the disadvantage that it is assumed that the wall thickness of the axially extending cylindrical area corresponds exactly to the wall thickness of the hub surface, so that either the foot ring of the ring gear is too thin and too weak is so that the teeth can break or the hub surface is too thick, so that there is a waste of material and an undesirable increase in weight
Aus der DE-40 06 582 A1 ist ein Verfahren zur Herstellung eines Zahnrades bekannt, bei welchem die Zahnrolle um eine Achse umlauft, die in Umfangsπchtung des zu bearbeitenden Werkstuckes steht und bei welchem die Umformarbeit in eine Vielzahl von Einzelumformschntten aufgelost ist, d h die Zahne werden in den Rand des Werkstuckes eingehämmert, so daß eine Gefugezerstorung auftritt, d h der Faserverlauf des Metalls wird zerstört und hier können spater Bruche auftretenFrom DE-40 06 582 A1 a method for producing a gear wheel is known, in which the toothed roller rotates about an axis which is in the circumferential direction of the workpiece to be machined and in which the shaping work is broken down into a large number of individual shaping sections, ie the tooth are hammered into the edge of the workpiece so that the structure is destroyed, ie the grain of the metal is destroyed and later breaks can occur
Auch bei der Verfahrensweise gemäß der DE-39 32 823 C1 werden die Zahne in eine axiale Flache eingedruckt, derenEven in the procedure according to DE-39 32 823 C1, the teeth are pressed into an axial surface, the
Starke der Wandstärke der Nabenflache entsprichtThickness corresponds to the wall thickness of the hub surface
Aus der US-A-42 73 547 ist ein Verfahren zur Herstellung von Riemenscheiben oder Poly-V-Scheiben bekanntgeworden, bei welchem eine Metallronde in einem ersten Verfahrensschritt tiefgepreßt wird, so daß ein topfartiges Preßteil erzielt wird Dieses Preßteil weist im Bereich der Nabenflache und im Bereich der sich koaxial, d h im wesentlichen senkrecht zur Nabenflache erstreckenden zylindrischen Flache die gleiche Wandstarke auf Anschließend ist es erforderlich, den Randbereich der gebildeten zylindrischen Flachen fein zu bearbeiten Als nächster Verfahrensschritt schließt sich ein sogenanntes „Kollapsen" der zylindrischen Randflache an Durch dieses „Kollapsen" wird die zylindrische Randflache durch Verformung in ihrer Hohe reduziert, wobei gleichzeitig der Randbereich zwischen der Nabenflache und der zylindrischen Flache eingefaltet wird Der so kollapste Randbereich wird dann über eine Zu- druckrolle umgeformt und zusammengedrucktFrom US-A-42 73 547 a process for the production of pulleys or poly-V pulleys has become known, in which a metal blank is pressed in a first process step, so that a pot-like pressed part is obtained. This pressed part has in the area of the hub surface and in the area of the cylindrical surface which extends coaxially, ie essentially perpendicular to the hub surface, the same wall thickness is then required. The edge region of the cylindrical surfaces formed must then be finely machined. The next process step is followed by a so-called "collapsing" of the cylindrical edge surface. Collapses ", the height of the cylindrical edge surface is reduced by deformation, the edge region between the hub surface and the cylindrical surface being folded in at the same time. The edge region collapsed in this way is then shaped and pressed together using a pressure roller
Dieses bekannte Verfahren benotigt also im wesentlichen fünf aufeinanderfolgende, unbedingt erforderliche wesentliche Bear- beitungsschhtte, wobei die für das Kollapsen aufzuwendenden Kräfte erheblich sind, so daß große maschinelle Aufwendungen erforderllich sindThis known method therefore essentially requires five successive, absolutely essential beitungsschhtte, wherein the forces to be used for the collapse are considerable, so that large mechanical expenditure is required
In der EP-A-343 314 wird ein Verfahren zur Herstellung einerEP-A-343 314 describes a method for producing a
Riemenscheibe beschrieben, bei der eine Metallronde in ihrem Umfangsbereich bordiert und anschließend die Bordierung zur Bildung einer Auflagefläche flachgedrückt wird, wobei dann in die so gebildete Auflagefläche in Umfangsrichtung verlaufende Nuten eingearbeitet werden oder es ist auch möglich, Querverzahnungen in diese Auflagefläche einzubringen, so daß eine querverzahnte Riemenscheibe erstellt wird. Da der Werkstoff der Bordierung aber zur Bildung der Auflageflache bereits verdichtet ist, sind besondere Anforderungen an die Herstellung der Verzahnung gestellt, d h die Verzahnung wird in ein verdichtetes Metallteil eingebrachtA pulley is described in which a metal disk is bordered in its peripheral region and the bordering is then flattened to form a bearing surface, in which case circumferential grooves are then machined into the bearing surface formed in this way, or it is also possible to introduce transverse toothing in this bearing surface, so that a cross-toothed pulley is created. However, since the material of the border is already compressed to form the contact surface, special requirements are placed on the production of the toothing, i.e. the toothing is introduced into a compressed metal part
Aus der gattungsbildenden DE 42 05 71 1 C1 ist ein Verfahren zur Herstellung eines außen verzahnten Präzisiongetπebeteiles aus einer Metallronde bekanntgeworden mit einer Nabenflache und einem umlaufenden, aus einem Fußkranz und daran nach außen vorstehenden Zähnen gebildeten Zahnkranz, der sich im wesentlichen senkrecht zur Nabenfläche erstreckt, wobei die Metallronde in ihrem Umfangsbereich bordiert und die Bordie- rung unter gleichzeitiger Bildung der Zähne in einem Aufnahmeraum einer Zahnrolle flachgedrückt, d. h spanlos geformt wird. Hierbei wird nach dem Bordieren eine Zahnrolle auf die Bordierung zugestellt und durch weiteres Zustellen der Zahnrolle die Bordierung in den Zwischenraum zwischen den Zähnen hinem- gepreßt, so daß dadurch der umlaufende Zahnkranz gebildet wird. Hierbei ist eine Kopplung zwischen dem umlaufend angetriebenen Werkstück und dem umlaufend angetriebenen Formwerkzeug, nämlich der Zahnrolle, erforderlich, was bei dem bekannten Vorschlag durch eine Kette erfolgt. Die Synchroni- sation des umlaufend angetriebenen Werkstückes und des umlaufend angetriebenen Werkzeuges erfordert hohe Kräfte und ein standiges Nachregulieren der Stellung der beiden Bauteile zueinanderFrom the generic DE 42 05 71 1 C1 a method for producing an externally toothed precision gear part from a metal blank has become known with a hub surface and a circumferential ring gear formed from a base ring and teeth protruding outward therefrom, which extends essentially perpendicular to the hub surface, wherein the metal disk borders in its peripheral region and the border is flattened while simultaneously forming the teeth in a receiving space of a toothed roller, i. h is formed without cutting. In this case, after the flanging, a sprocket is placed on the flattening and, by further advancing the sprocket, the flanging is pressed into the space between the teeth, so that the circumferential ring gear is thereby formed. Here, a coupling between the rotatingly driven workpiece and the rotatingly driven molding tool, namely the toothed roller, is required, which is done by a chain in the known proposal. The synchronization of the rotating workpiece and the rotating tool requires high forces and a constant readjustment of the position of the two components to each other
Der Erfindung hegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zu schaffen, mit der die Synchronisation desThe invention has for its object to provide a method and an apparatus with which the synchronization of
Werkstuckes mit dem Werkzeug nicht mehr notwendig ist und die Herstellung des Getriebeteiles kostengünstig erfolgen kann, wobei Gefugeveranderungen im Zahnbereich des hergestellten Getriebes vermieden werden Weiterhin soll eine Nachbearbei- tung der hergestellten Werkstucke weitgehend vermieden werdenWorkpiece with the tool is no longer necessary and the production of the gear part can be carried out inexpensively, structural changes in the tooth area of the manufactured gearbox are avoided. Furthermore, reworking of the manufactured workpieces is to be largely avoided
Diese der Erfindung zugrundeliegende Aufgabe wird durch die Lehre des Hauptanspruches gelostThis object on which the invention is based is achieved by the teaching of the main claim
Vorteilhafte Ausgestaltungen sind in den Vorrichtungsanspru- chen 4 und 5 erläutert und weitere vorteilhafte Ausgestaltungen dieser Vorrichtungsanspruche in den Unteranspruchen 6 bis 9Advantageous refinements are explained in device claims 4 and 5 and further advantageous refinements of these device claims in subclaims 6 to 9
Mit anderen Worten ausgedruckt wird also vorgeschlagen, daß eine an sich frei drehbare Zahnrolle als Formrolle eingesetzt wird, die sich aber wahrend der Bildung der Zahne nicht auf die Spindel-Vorsetzerachse X - X in radialer Richtung zu bewegt, sondern ortsfest zur Achse X - X positioniert ist, so daß die zu bildenden Zahne nicht durch die Zahnrolle in das Werkstuck eingepreßt werden, sondern das Material des Werkstuckes in die Zahnrolle einfließt Hierbei kann von einer Ronde ausgegangen werden, die in ihrem Randbereich verdickt wird, wobei dann die Verdickung durch aufeinanderzufahrende Druckrollen in die Zahnraume der Zahnrolle als Formrolle eingepreßt werden oder es kann auch eine Ronde eingesetzt werden, die lediglich in ihrem Randbereich durch die beiden Druckrollen zusammengedruckt wird, wobei beim Zusammendrucken das Material in die Zahne der Formrolle eingepreßt werden Ein solches Werkstuck kann beispielsweise als Kettenrad einesIn other words, it is proposed that a toothed roller which can be freely rotated as such is used as the form roller, but which does not move in the radial direction towards the spindle advancement axis X - X during the formation of the tooth, but rather in a fixed manner to the axis X - X is positioned so that the teeth to be formed are not pressed into the workpiece by the toothed roller, but rather the material of the workpiece flows into the toothed roller. It can be assumed that a round blank is thickened in its edge region, the thickening then being caused by pressure rollers moving towards one another can be pressed into the tooth space of the toothed roller as a form roller or a round blank can also be used, which is only pressed together in its edge region by the two pressure rollers, the material being pressed into the teeth of the form roller when pressed together. Such a workpiece can be used, for example, as a sprocket
Fahrrades eingesetzt werden Schließlich ist es möglich, von einem Vorzug auszugehen, dessen Randbereich, d h also der zylindrische Topfbereich des Vorzuges, durch Kollapsen umgeformt wird, wobei wahrend des Kollapsens das Material in die Räume der Zahne der Zahnrolle einfließen kannBicycle are used Finally, it is possible to start from a preference whose edge region, ie the cylindrical pot region of the preference, is formed by collapses, the material being able to flow into the spaces of the teeth of the toothed roller during the collapse
Ausfuhrungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen erläutertExemplary embodiments of the invention are explained below with reference to the drawings
Die Zeichnungen zeigen dabei inThe drawings show in
Fig 1 schaubildhch, aber relativ schematisch eine Anordnung zur Bildung eines verzahnten Getπebe- teiles aus einer Ronde im Ausgangszustand, in1 shows a diagram, but relatively schematically, of an arrangement for forming a toothed Getπebe- part from a blank in the initial state, in
Fig 2 die Anordnung gemäß Fig 1 , nachdem der Randbereich der Ronde verdickt ist, in Fig 3 die Anordnung gemäß Fig 1 und 2, nachdem die2 shows the arrangement according to FIG. 1 after the edge region of the round blank is thickened, in FIG. 3 the arrangement according to FIGS. 1 and 2 after the
Formrolle an den Außenumfang der verdickten Ronde herangefahren ist und inForm roll has moved up to the outer circumference of the thickened blank and in
Fig 4 in einer teilweise geschnittenen Darstellung die zusammengefahrenen Druckrollen und den in die Zahnraume der Zahnrolle eingepreßten verzahnten Randbereich, in Fig 5 schematisch eine Ausfuhrungsform mit eingesetztem Vorzug als Werkstuck und in Fig 6 eine Darstellung gemäß Fig 5, bei welcher derFig. 4 in a partially sectioned representation of the compressed pressure rollers and the toothed edge area pressed into the tooth spaces of the toothed roller, in Fig. 5 schematically an embodiment with an inserted preference as a workpiece and in Fig. 6 a representation according to Fig. 5, in which the
Randbereich des Vorzuges kollapst und in die Zahnraume der Formrolle eingeführt istEdge area of the preference collapses and is inserted into the tooth spaces of the form roller
In den Zeichnungen ist bei 1 eine Spindel und bei 2 ein abgehobener Vorsetzer dargestellt Die Spindel 1 tragt an ihrer Oberseite ein Werkstuck 3, das als Ronde 8 ausgebildet ist Bei 4 ist eine in Richtung des Pfeiles F4 an das Werkstuck 3 heran- fahrbare Bordier- oder Stauchrolle dargestellt Eine Zahnrolle 5 ist in Richtung des Pfeiles F5 an das Werkstuck 3 heranfahrbar wobei aber die Zahnrolle 5 um ihre Achse 14 frei drehbar in entsprechenden Tragern 15 und 16 gelagert istIn the drawings, a spindle is shown at 1 and a lift-off attachment is shown at 2. The spindle 1 carries on its upper side a workpiece 3 which is designed as a round plate 8. At 4 is a border which can be approached to the workpiece 3 in the direction of arrow F 4 - Or crushing roller shown A toothed roller 5 can be moved towards the workpiece 3 in the direction of arrow F 5 but wherein the toothed roller 5 is freely rotatable about its axis 14 in corresponding carriers 15 and 16
Gegenüber der Zahnrolle 5 sind zwei Druckrollen 6 und 7 dar- gestellt, die in Richtung der Pfeile F6 und F7 aufemanderzu und vonemanderweg beweglich sind Die Ausbildung der Bordier- oder Stauchrolle 4 bzw mehrerer Rollen kann den Erfordernissen entsprechend gestaltet sein, d h beispielsweise halbrund, so wie in Fig 1 dargestellt, aber auch andere Formen sind durchaus möglich Insbesondere kann die Bordier- oderCompared to the toothed roller 5, two pressure rollers 6 and 7 are shown, which are movable towards and away from one another in the direction of the arrows F 6 and F 7 , as shown in Fig. 1, but other shapes are also possible. In particular, the Bordier or
Stauchrolle 4 so gestaltet sein, daß die erzielte Verdickung symmetrisch zur Ebene der Ronde 8 ausgebildet ist oder zur einen oder anderen Seite gestaltet wird, je nachdem, welche Form des Zahnrades erreicht werden soll So wird beispiels- weise dann, wenn ein Starterkranz hergestellt werden soll, dieCompression roller 4 can be designed so that the thickening achieved is symmetrical to the plane of the round blank 8 or is designed on one side or the other, depending on which shape of the gear wheel is to be achieved. This is the case, for example, when a starter ring is to be produced , the
Verdickung so gestaltet, daß der gebildete Zahnkranz sich im wesentlichen senkrecht zur einen oder anderen Seite der Nabenflache des Getriebeteiles erstreckt Auch kann der gebildete Zahnkranz mittig zur Nabenflache des Getriebeteiles aus- gerichtet seinThickening designed so that the sprocket formed extends substantially perpendicular to one or the other side of the hub surface of the gear part. The sprocket formed can also be aligned centrally to the hub surface of the gear part
In gleicher Weise ist es möglich, die Wirkflachen der Druckrollen 6 und 7 so zu gestalten, daß beispielsweise die aus den Zeichnungen ersichtliche Anfasung vorgesehen wird Auch hier sind andere Gestaltungsmoglichkeiten gegebenIn the same way, it is possible to design the effective surfaces of the pressure rollers 6 and 7 in such a way that, for example, the chamfer shown in the drawings is provided. Here, too, there are other design options
Fig 2 zeigt, daß die Bordierrolle 4 an die Ronde 8 herangefahren ist und deren Rand halbkreisförmig verformt, d h verdickt hat Sowohl die Zahnrolle 5 wie auch die Druckrollen 6 und 7 stehen in ihrer Ausgangsposition gemäß Fig 12 shows that the bordering roller 4 has moved towards the round blank 8 and its edge has been deformed in a semicircular shape, that is, it has thickened. Both the toothed roller 5 and the pressure rollers 6 and 7 are in their starting position according to FIG. 1
Fig 3 zeigt, daß nunmehr als nächster Schritt die Zahnrolle 5 an den Außenumfang der verdickten Ronde 8 in radialer Richtung herangefahren ist und diesen berührt Im weiteren Arbeitsver- fahren bleibt aber die Zahnrolle 5 in dieser Stellung stehen, d h wird nicht in das Material der Ronde 8 hinein verfahren Wird nunmehr, wie dies aus Fig 4 ersichtlich ist, der verdickte Randbereich der Ronde 8 durch die Druckrollen 6 und 7 zusammengepreßt, fließt das Material des verdickten Randberei- ches der Ronde 8 in die Räume zwischen den vorstehendenFIG. 3 shows that, as the next step, the toothed roller 5 has moved towards the outer circumference of the thickened circular blank 8 in the radial direction and touches it. In the further working process, however, the toothed roller 5 remains in this position, ie it does not enter the material of the circular blank 8 move in If, as can be seen from FIG. 4, the thickened edge region of the round blank 8 is pressed together by the pressure rollers 6 and 7, the material of the thickened edge region of the round blank 8 flows into the spaces between the above
Zahnen der Zahnrolle 5 und bildet das außen verzahnte Getπe- beteilTeething of the toothed roller 5 and forms the externally toothed Getπe- participation
Bei der Ausfuhrungsform gemäß Fig 5 ist wiederum eine Spin- del 1 und ein Vorsetzer 2 dargestellt, die zwischen sich einIn the embodiment according to FIG. 5, a spindle 1 and a step-up element 2 are shown, which are between them
Werkstuck 3 festlegen, das als Vorzug 9 ausgebildet ist Der Vorzug 9 ist also ein zylindrisches, topfformiges Teil, dessen äußere Randkanten in einem Kollapsring 10 zentriert sind, der in Richtung des Pfeiles Fι0 in Fig 5 verfahrbar ist Eine Form- rolle 17 erzeugt durch radiales Zustellen eine oder mehrereFix workpiece 3, which is designed as a preference 9 The preference 9 is therefore a cylindrical, pot-shaped part, the outer edge edges of which are centered in a collapse ring 10 which can be moved in the direction of the arrow Fι 0 in FIG. 5 radial delivery one or more
Sollknickstellen, auch Kollapslinien 18 und 19 genanntTarget kinks, also called collapse lines 18 and 19
Die Oberseite des Werkstuckes 3 wird durch eine Stutzrolle 12 abgestutzt Hierbei ist es aber auch möglich daß der Vorsetzer 2 eine solche Große aufweist, daß er gleichzeitig als Stutzrolle für die Randkanten des Vorzuges 9 dient Auch können zwei oder mehrere Stutzrollen vorgesehen sein Bei 5 ist die Zahnrolle dargestellt Wird nunmehr - wie in Fig 6 dargestellt - der topfformige Randbereich des Vorzuges 9 durch den Kollapsring 10 kollapst, wölbt er sich nach außen - wie in Fig 6 links dargestellt - wobei dieser gewölbte Bereich dann, wenn er in den Bereich der Zahnrolle 5 gelangt, in die Räume zwischen den Zahnen der Zahnrolle 5 einfließt, d h also die Zahne werden dadurch gebildet, daß sie in die zwar drehbare, aber in Rich- tung auf die Vorsetzer-Spindelachse X - X feststehende Rolle eingeformt werden Durch standiges Zustellen des Kollapsringes 10 bis zur Endposition werden derart die Zahne gebildetThe top of the workpiece 3 is supported by a support roller 12, but it is also possible that the attachment 2 has such a size that it also serves as a support roller for the peripheral edges of the preference 9. Two or more support rollers can also be provided Toothed roller shown If, as shown in FIG. 6, the pot-shaped edge area of the preference 9 is collapsed by the collapse ring 10, it bulges outward - as shown in FIG. 6 on the left - this curved area when it enters the area of the toothed roller 5 arrives into the spaces between the teeth of the toothed roller 5, that is to say the teeth are formed by being molded into the roller, which is rotatable but is fixed in the direction of the advancement spindle axis X - X by continuously adjusting the collapse ring 10 to the end position, the teeth are formed in this way
Es sei ausdrücklich darauf hingewiesen, daß die dargestellten Ausfuhrungsformen lediglich schematische Darstellungen zurIt should be expressly pointed out that the embodiments shown are only schematic representations of the
Verdeutlichung der Arbeitsvorgange sind Zusatzliche Ruckhai- terollen, um Gradbildungen zu vermeiden und zusätzliche Stutzrollen, um ein Ausweichen des Materials während der Formvorgänge zu verhindern, können selbstverständlich vorgesehen sein.Clarification of the work processes are additional jerk-shark rolls to avoid degrees and additional support rolls to prevent the material from evading during the molding processes can of course be provided.
Getrennte, auf einzelnen Maschinen durchgeführte Verfahrensschritte können vorteilhaft sein So kann das Aufnahmewerkzeug optimal dem zu erzielenden Werkstück und dem jeweiligen Verfahrensschritt angepaßt sein Entsprechend der Starke der Ronde können mehrere Bordier- oder Verdickungsrollen eingesetzt werden Separate process steps carried out on individual machines can be advantageous. The receiving tool can be optimally adapted to the workpiece to be achieved and the respective process step. Depending on the thickness of the round blank, several bordering or thickening rolls can be used

Claims

Patentansprücheclaims
1 Verfahren zur Herstellung eines außen verzahnten Ge- tπebe- teiles aus einem als Ronde oder Vorzug vorliegenden metallischen Werkstuck, wobei das Getriebeteil mit einer Nabenflache und daran nach außen vorstehenden Zahnen ausgebildet ist und das Werkstuck in seinem Umfangsbereich flachgedruckt und die Zahne in einer Zahnrolle spanlos geformt werden, dadurch gekennzeichnet, daß die frei drehbar gelagerte Zahnrolle wahrend der durch Flachdrucken des Werkstuckes erfolgenden Bildung der Zahne in radialer Richtung auf die Spindel-Vorsetzerachse (X - X) hin ortsfest eingestellt ist1 Method for producing an externally toothed part from a metallic workpiece which is in the form of a blank or a preference, the gear part being designed with a hub surface and teeth projecting outward thereon, the workpiece being flat-printed in its circumferential region and the tooth being non-cutting in a toothed roller be shaped, characterized in that the freely rotatably mounted toothed roller is stationary in the radial direction towards the spindle-advance axis (X - X) during the formation of the tooth by printing the workpiece
2 Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß der Werkstucksrand einer Ronde vor dem Flachdrucken bordiert oder verdickt wird2 The method according to claim 1, characterized in that the workpiece edge of a round blank is bordered or thickened before the flat printing
3 Verfahren nach Anspruch 1 , dadurch gekennzeichnet, daß der zylindrische Werkstuckrand eines topfformigen Vorzuges in Richtung der Spindel-Vorsetzerachse X - X kollapst und der kollapste Bereich in der drehbaren, aber in radialer Rich- tung ortsfest feststehenden Zahnrolle geformt wird3 The method according to claim 1, characterized in that the cylindrical workpiece edge of a pot-shaped preference collapses in the direction of the spindle extension axis X - X and the collapsed area is formed in the rotatable, but fixed in the radial direction fixed toothed roller
4 Vorrichtung zum Durchfuhren des Verfahrens nach Anspruch 1 oder 2 mit einer das Werkstuck zwischen einer Spindel (1 ) und einem Vorsetzer (2) festlegenden Aufnah- mevornchtung und einer Zahnrolle (5), gekennzeichnet durch zwei den Rand des Werkstuckes (3) zwischen sich flachdruckenden Druckrollen (6, 7) und die Einstellung der Zahnrolle (5) in radialer Richtung ortsfest derart daß die Zahnkopflinie der Zahnrolle (5) am Außenumfang des Werkstuckes (3) vor dessen Flachdrucken anliegt 5 Vorrichtung nach Anspruch 4, gekennzeichnet durch eine oder mehrere Bordier- oder Stauchrollen (4) zum Verdik- ken des4 Device for carrying out the method according to claim 1 or 2 with a receiving device which fixes the workpiece between a spindle (1) and a front cover (2) and a toothed roller (5), characterized by two the edge of the workpiece (3) between them flat printing rollers (6, 7) and the setting of the toothed roller (5) in the radial direction so that the toothed line of the toothed roller (5) rests on the outer circumference of the workpiece (3) before its flat printing 5 Device according to claim 4, characterized by one or more bordering or upsetting rollers (4) for thickening the
Randes des z B als Ronde (8) vorliegenden Werkstuckes 5Edge of the workpiece 5 present, for example, as a blank (8)
6 Vorrichtung zum Durchfuhren des Verfahrens nach Anspruch 1 oder 3 mit einer das Werkstuck zwischen einer Spindel (1 ) und einem Vorsetzer (2) festlegenden Aufnahmevorrichtung und einer Zahnrolle (5), gekennzeichnet6 device for performing the method according to claim 1 or 3 with a workpiece between a spindle (1) and a front end (2) defining the receiving device and a toothed roller (5)
10 durch einen Kollapsring oder ein Kollapsfutter (10), das in10 by a collapse ring or a collapse feed (10), which in
Richtung der Spindel-Vorsetzerachse (X - X) verfahrbar ist und die Einstellung der Zahnrolle (5) in radialer Richtung ortsfest derart, daß die Zahnkopflinie der Zahn-rolle (5) an der Zahnfußlinie des zu bildendenDirection of the spindle front axle (X - X) can be moved and the setting of the toothed roller (5) in the radial direction stationary such that the tooth tip line of the toothed roller (5) on the tooth root line of the to be formed
15 verzahnten Getriebeteiles egt15 toothed gear part egt
7 Vorrichtung nach Anspruch 6, gekennzeichnet durch eine Vorformrolle (17) zur Erzeugung der Kollapshnien (18) und7 Device according to claim 6, characterized by a preform roller (17) for generating the collapse (18) and
20 (19)20 (19)
8 Vorrichtung nach Anspruch 6 oder 7, gekennzeichnet durch eine oder mehrere an der Oberseite des Vorzuges8 Device according to claim 6 or 7, characterized by one or more at the top of the preference
25 (9) anliegende Stutzrollen (12) oder einen Stutzring25 (9) adjacent support rollers (12) or a support ring
9 Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß das Kollapsfutter oder der Kollapsring (10) wahrend der Zahnbildung als Stutzfutter wirkt9 Apparatus according to claim 6 or 7, characterized in that the collapse chuck or the collapse ring (10) acts as support chuck during tooth formation
30 30
EP96937179A 1996-08-14 1996-09-03 Process and device for manufacturing a gear part with outer teeth Expired - Lifetime EP0921879B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19632704 1996-08-14
DE19632704 1996-08-14
DE19635152 1996-08-30
DE19635152A DE19635152A1 (en) 1996-08-14 1996-08-30 Method and device for producing an externally toothed gear part
PCT/DE1996/001641 WO1998006521A1 (en) 1996-08-14 1996-09-03 Process and device for manufacturing a gear part with outer teeth

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EP0921879A1 true EP0921879A1 (en) 1999-06-16
EP0921879B1 EP0921879B1 (en) 2000-07-12

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EP96937179A Expired - Lifetime EP0921879B1 (en) 1996-08-14 1996-09-03 Process and device for manufacturing a gear part with outer teeth

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US (1) US6161409A (en)
EP (1) EP0921879B1 (en)
JP (1) JP3840264B2 (en)
CA (1) CA2263408A1 (en)
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WO (1) WO1998006521A1 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000283262A (en) * 1999-03-30 2000-10-13 Fuji Kiko Co Ltd Steel for gear, drive plate gear and manufacture thereof
DE29910214U1 (en) * 1999-06-11 1999-09-02 Hegenscheidt Mfd Gmbh Deep rolling device of a deep rolling machine for crankshafts
US7628049B2 (en) * 2001-06-14 2009-12-08 Tulip Corporation Method and apparatus for manufacturing a battery terminal with undercut rings
US6868606B2 (en) * 2001-11-16 2005-03-22 Wf-Maschinenbau Und Blechformtechnik Gmbh & Co. Kg Method and apparatus for making a rotation-symmetrical gear member
DE60323203D1 (en) * 2002-01-17 2008-10-09 Quide B V METHOD AND MOLDING DEVICE FOR MANUFACTURING A PRODUCT WITH DIFFERENT DIAMETERS
DE20200926U1 (en) * 2002-01-23 2002-04-18 Hegenscheidt Mfd Gmbh & Co Kg Deep rolling device of a deep rolling machine for crankshafts
US20040123461A1 (en) * 2002-12-31 2004-07-01 Chih-Ching Hsien Method for making a gear with 90-180 teeth
CA2591958C (en) * 2004-12-23 2012-06-19 Mueller Weingarten Ag Method for producing longitudinal grooves in cylindrical workpieces
JP2006224161A (en) * 2005-02-18 2006-08-31 Denso Corp Method and device for producing cylindrical component with bend
DE102005032350A1 (en) * 2005-07-08 2007-01-11 Metu Meinig Aktiengesellschaft Method and device for integrally molding a flange at the end of a round or oval tube made of thin-walled sheet metal and produced by the process tube
CN101652200B (en) 2007-03-19 2013-02-13 麦格纳动力系有限公司 Method for manufacturing a toothed disc and the toothed disc manufactured thereby
CN101850393B (en) * 2010-05-14 2012-08-15 罗世凯 Gear cold rotation flanging press forming method
KR101684672B1 (en) * 2015-07-22 2016-12-08 (주)로프트 Workpiece Edge Foaming Apparatus And Foaming Method
KR101611870B1 (en) * 2015-10-23 2016-04-12 김명열 Forming apparatus
CN105562494A (en) * 2015-12-22 2016-05-11 浙江名江南家居有限公司 Curling machine
EP3246104B1 (en) * 2016-05-18 2019-11-06 Leifeld Metal Spinning AG Method and device for manufacturing a formed element
CN107214229A (en) * 2017-07-13 2017-09-29 芜湖西诺普汽车零部件科技有限公司 A kind of processing method of handwheel
CN110076230B (en) * 2019-04-04 2021-01-01 华南理工大学 Rolling and spinning forming device and method for tooth-shaped part
KR102270336B1 (en) * 2019-12-18 2021-06-28 추광식 Wrinkled Belt Pulley Manufacture Device

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3261192A (en) * 1964-03-17 1966-07-19 Saito Tadashi Method and apparatus for manufacture of toothed wheel
US4273547A (en) * 1975-11-04 1981-06-16 Drive Manufacturing Inc. Method of pulley manufacture and product
US4485656A (en) * 1982-08-27 1984-12-04 Hayes Albion Corporation Transmission piston and method of making the same
DE3475212D1 (en) * 1983-09-30 1988-12-22 Luk Lamellen & Kupplungsbau Flywheel for internal combustion engine
DE8803780U1 (en) * 1988-03-19 1988-06-23 Winkelmann & Pannhoff Gmbh, 4730 Ahlen, De
ES2038792T3 (en) * 1988-05-27 1993-08-01 Winkelmann & Pannhoff Gmbh PROCEDURE FOR THE MANUFACTURE OF A TRANSMISSION PULLEY.
US4945783A (en) * 1989-03-09 1990-08-07 Grob, Inc. Ring gear with roll formed teeth
DE3932823C1 (en) * 1989-09-30 1990-12-06 Wf-Maschinenbau Und Blechformtechnik Gmbh & Co Kg, 4415 Sendenhorst, De Toothed transmission component mfr. - involves tool with external teeth forming inside teeth on workpiece
JP2826913B2 (en) * 1990-12-28 1998-11-18 株式会社久保田鉄工所 Drive plate manufacturing method
DE4205711C3 (en) * 1992-02-13 2000-02-24 Wf Maschinenbau Blechformtech Device for producing an externally toothed gear part
DE4244720A1 (en) * 1992-02-13 1994-03-03 Wf Maschinenbau Blechformtech Method for manufacture of externally toothed gear
US5237744A (en) * 1992-02-19 1993-08-24 Tesma International Inc. Method of cold-forming toothed wheels
JP3364811B2 (en) * 1994-04-22 2003-01-08 株式会社久保田鉄工所 Gear manufacturing equipment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9806521A1 *

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JP2000515812A (en) 2000-11-28
US6161409A (en) 2000-12-19
JP3840264B2 (en) 2006-11-01
EP0921879B1 (en) 2000-07-12
WO1998006521A1 (en) 1998-02-19
ES2148807T3 (en) 2000-10-16
CA2263408A1 (en) 1998-02-19

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