EP1119426A1 - Tool for producing a gear part having external toothing - Google Patents

Tool for producing a gear part having external toothing

Info

Publication number
EP1119426A1
EP1119426A1 EP99914413A EP99914413A EP1119426A1 EP 1119426 A1 EP1119426 A1 EP 1119426A1 EP 99914413 A EP99914413 A EP 99914413A EP 99914413 A EP99914413 A EP 99914413A EP 1119426 A1 EP1119426 A1 EP 1119426A1
Authority
EP
European Patent Office
Prior art keywords
axis
workpiece
tool
tooth
areas
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
EP99914413A
Other languages
German (de)
French (fr)
Other versions
EP1119426B1 (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
Application filed by WF Maschinenbau und Blechformtecknik GmbH and Co KG filed Critical WF Maschinenbau und Blechformtecknik GmbH and Co KG
Publication of EP1119426A1 publication Critical patent/EP1119426A1/en
Application granted granted Critical
Publication of EP1119426B1 publication Critical patent/EP1119426B1/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
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/28—Making machine elements wheels; discs
    • B21K1/30—Making machine elements wheels; discs with gear-teeth
    • 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 tool for producing an externally toothed gear part according to the preamble of the main claim. Furthermore, the invention relates to a method for producing an externally toothed gear part according to the preamble of claim 5.
  • workpiece means the blank to be machined or partially machined.
  • Pressing is understood to mean a process in metal forming which is used to produce rotationally symmetrical bodies using pressing tools. Recently, the term “roll forming” or “pressing rolls” is also used in technology for this process.
  • a generic tool is described in DE 196 13 457 C1.
  • the forming roller having a plurality of forming regions not only executes a movement in the direction of the Y axis for each forming region, but - since the tip circle of the individual forming regions is increasing - the tool must move in the direction of the YY with every movement -Axis also perpendicular to the YY-axis, i.e. H. So be moved back radially so that the next forming area in the preformed tooth area of the
  • Workpiece can intervene.
  • the material of the workpiece displaced by the tool is displaced into the space of the tooth to be formed, that is to say into the space that exists between the teeth of the tool. This can lead to unfolding or uncontrolled deposition of the displaced
  • the object of the invention is to enable a manufacturing process by means of a suitably designed tool, in which an uncontrolled flow of the displaced material does not occur in the area of the tooth to be formed, and which also avoids the additional movement of the form roller that was previously required in the prior art .
  • the invention is also based on the object of proposing a method which makes it possible to produce an externally toothed gear part quickly and inexpensively.
  • the tip circle of the tool is the same over all the forming areas and that the different tooth depth is achieved by changing the root circle of the teeth of the tool.
  • the material of the workpiece displaced by the teeth of the tool flows outwards in the arrangement according to the invention and can be removed here after the gear wheel has been finished by appropriate material processing.
  • the form roller is freely rotatable according to the invention and thus adapts to the teeth to be formed without difficulty and gear coupling with the drive of the receiving tool.
  • a limiting device is provided, which is preferably formed by two interacting pressure rollers which between the outflowing material hold, shape and limit if necessary.
  • the circumferential area of the workpiece to be reshaped is optimized, for example concavely curved inwards or recessed inward via straight surfaces, so that only so much material in the circumferential area of the workpiece is present, as is necessary for the formation of the actual tooth.
  • the method according to the invention is essentially characterized in that several form rollers can be used simultaneously on the workpiece. As a result, the pressure on the holding tool that occurs due to the pressing of the forming roller into the workpiece is minimized, since this pressure is absorbed by the possibly opposite forming roller. Two, three or even more form rollers can be provided on the circumference of the workpiece.
  • the workpiece is set in a rotating back and forth movement, whereby the two flanks of the tooth formed are acted upon uniformly by the form roller, so that differences in the tooth flanks are avoided here.
  • FIG. 1 and 2 in a sectional view, the various stages of the tool in relation to the workpiece, in Fig. 3 in a diagrammatic representation
  • a pick-up tool 1 which rotates around an X-X.
  • a workpiece 3 or blank is fixed on the holding tool 1 by a presetter 2.
  • a form roller 4 is, for. B. from four individual forming areas 4a, 4b, 4c and 4d, which form roller 4 can rotate about an axis Y-Y and is freely rotatable.
  • the holding tool 1 is driven in a revolving manner and preferably in a reciprocating, revolving movement, which can be, for example, 180 ° or 120 °.
  • a reciprocating, revolving movement which can be, for example, 180 ° or 120 °.
  • the forming area 4a is set in relation to the radial outer edge of the workpiece 3 and then advanced to the workpiece 3, and the tooth area 5a is brought into contact with the outer edge of the workpiece 3 and a recess is formed by pressing.
  • the form sheet 4 is adjusted further in the direction of its Y axis by a forming area, so that the tooth area 5b of the forming area 4b with the workpiece 3 in
  • limiting devices 7 and 8 are provided, which in the illustration are out of engagement with the peripheral region 11 of the workpiece 3, for. B. a round blank are shown, but are in this circumferential area when performing the working process.
  • Each limiting device 7 or 8 has pressure rollers 9 and 10, which now prevent the material displaced by the teeth, for example 5a, from flowing out in an uncontrolled manner.
  • FIG. 5 shows an exemplary embodiment in section of the peripheral region of the workpiece 3, which has a concave curvature 12 for optimizing the flowing material, while according to FIG. 6 this optimization is achieved by straight cuts or recesses 14.

Landscapes

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

Abstract

The invention relates to a tool for producing a gear part having external toothing using a method of shaping by compression or by rolling. Said tool comprises a receiving tool (1) for supporting the work piece (3) which is impinged upon by a projection (2). Said receiving tool is driven to perform a rotational movement. The inventive tool additionally comprises a roller (4) which is mounted in a support in such a way that it can pivot about an axis (Y) that is parallel to the axis (X) of the receiving tool (1). Said roller can be adjusted in the direction of its Y axis in relation to the work piece (3). It is subdivided in the direction of its Y axis into several consecutive shaping areas with increasing tooth depths. The roller (4) can be applied to the work piece (3) in a perpendicular direction to its Y axis in order to carry out the compression method. The tooth height of the individual shaping areas increases while the tip circle remains the same across all shaping areas. The root radius of the individual shaping areas decreases and the tooth depth increases from one shaping area to the next shaping area. As a result, the tooth thickness at the root circle increases in all of the shaping areas.

Description

WERKZEUG ZUR HERSTELLUNG EINES AUSSEN VERZAHNTEN GETRIEBETEILESTOOL FOR PRODUCING AN EXTERNAL GEARED GEARBOX PART
Die Erfindung bezieht sich auf ein Werkzeug zur Herstellung eines außen verzahnten Getriebeteiles gemäß dem Oberbegriff des Hauptanspruches. Weiterhin bezieht sich die Erfindung auf ein Verfahren zur Herstellung eines außen verzahnten Getriebeteiles gemäß dem Oberbegriff des Anspruches 5.The invention relates to a tool for producing an externally toothed gear part according to the preamble of the main claim. Furthermore, the invention relates to a method for producing an externally toothed gear part according to the preamble of claim 5.
Im nachfolgenden wird unter „Werkstück" das zu bearbeitende bzw. teilweise bearbeitete Rohteil verstanden. Unter dem BegriffIn the following, the term “workpiece” means the blank to be machined or partially machined. The term
„Drücken" wird ein Verfahren der Umformtechnik verstanden, das zur Herstellung von rotationssymmetrischen Körpern unter Verwendung von Drückwerkzeugen Verwendung findet. In der Technik wird neuerungsdings für dieses Verfahren auch der Be- griff „Rollformen" oder „Drückwalzen" verwendet."Pressing" is understood to mean a process in metal forming which is used to produce rotationally symmetrical bodies using pressing tools. Recently, the term "roll forming" or "pressing rolls" is also used in technology for this process.
Ein gattungsbildendes Werkzeug ist in der DE 196 13 457 C1 beschrieben. Bei dieser bekannten Anordnung ist es erforderlich, daß die mehrere Umformbereiche aufweisende Formrolle für jeden Umformbereich nicht nur eine Bewegung in Richtung der Y-Achse ausführt, sondern - da der Kopfkreis der einzelnen Umformbereiche ansteigend ist - muß das Werkzeug bei jeder Bewegung in Richtung der Y-Y-Achse auch senkrecht zur Y-Y-Achse, d. h. also radial zurückbewegt werden, damit der nächste Umformbereich in den vorgeformten Zahnbereich desA generic tool is described in DE 196 13 457 C1. In this known arrangement, it is necessary that the forming roller having a plurality of forming regions not only executes a movement in the direction of the Y axis for each forming region, but - since the tip circle of the individual forming regions is increasing - the tool must move in the direction of the YY with every movement -Axis also perpendicular to the YY-axis, i.e. H. So be moved back radially so that the next forming area in the preformed tooth area of the
Werkstückes eingreifen kann. Bei dem gattungsbildenden Werkzeug wird das vom Werkzeug verdrängte Material des Werkstückes in den Raum des zu bildenden Zahnes verdrängt, d. h. also in den Raum, der zwischen den Zähnen des Werkzeuges besteht. Hierdurch kann ei- ne Auffaltung oder unkontrollierte Ablagerung des verdrängtenWorkpiece can intervene. In the generic tool, the material of the workpiece displaced by the tool is displaced into the space of the tooth to be formed, that is to say into the space that exists between the teeth of the tool. This can lead to unfolding or uncontrolled deposition of the displaced
Materials des Werkstückes in dem Raum des Werkzeuges und damit innerhalb des zu bildenden Zahnes eintreten, wodurch der so gebildete Zahn im Werkstück nur sehr schwer zu kontrollierende Materialverformungen aufweisen kann, beispielsweise Faltungen oder Überlappungen, die die Standfestigkeit desMaterial of the workpiece in the space of the tool and thus inside the tooth to be formed, so that the tooth thus formed in the workpiece can have very difficult to control material deformations, such as folds or overlaps, which the stability of the
Zahnes des herzustellenden Werkstückes beeinträchtigen können.Can affect the tooth of the workpiece to be manufactured.
Der Erfindung liegt die Aufgabe zugrunde, durch ein entspre- chend ausgebildetes Werkzeug ein Herstellungsverfahren zu ermöglichen, bei dem ein unkontrolliertes Fließen des verdrängten Materials im Bereich des zu bildenden Zahnes nicht eintritt und daß außerdem die bisher im Stand der Technik erforderliche zusätzliche Bewegung der Formrolle vermeidet.The object of the invention is to enable a manufacturing process by means of a suitably designed tool, in which an uncontrolled flow of the displaced material does not occur in the area of the tooth to be formed, and which also avoids the additional movement of the form roller that was previously required in the prior art .
Der Erfindung liegt weiterhin die Aufgabe zugrunde, ein Verfahren vorzuschlagen, das eine schnelle und kostengünstige Herstellung eines außen verzahnten Getriebeteiles möglich macht.The invention is also based on the object of proposing a method which makes it possible to produce an externally toothed gear part quickly and inexpensively.
Diese der Erfindung zugrundeliegenden Aufgaben werden durch die Lehre des Hauptanspruches und des Anspruches 5 gelöst.These objects on which the invention is based are achieved by the teaching of the main claim and of claim 5.
Vorteilhafte Ausgestaltungen sind in den entsprechenden Unteransprüchen erläutert.Advantageous configurations are explained in the corresponding subclaims.
Mit anderen Worten ausgedrückt wird vorgeschlagen, daß der Kopfkreis des Werkzeuges über alle Umformbereiche gesehen gleich ist und daß die unterschiedliche Zahntiefe durch Veränderung des Fußkreises der Zähne des Werkzeuges erreicht wird. Das von den Zähnen des Werkzeuges verdrängte Material des Werkstückes fließt bei der erfindungsgemäßen Anordnung nach außen und kann hier nach Fertigstellen des Zahnrades durch entsprechende Materialbearbeitung entfernt werden.In other words, it is proposed that the tip circle of the tool is the same over all the forming areas and that the different tooth depth is achieved by changing the root circle of the teeth of the tool. The material of the workpiece displaced by the teeth of the tool flows outwards in the arrangement according to the invention and can be removed here after the gear wheel has been finished by appropriate material processing.
Die Formrolle ist gemäß der Erfindung frei drehbar gelagert und paßt sich damit ohne Schwierigkeiten und getriebemäßige Kopplungen mit dem Antrieb des Aufnahmewerkzeuges den zu bildenden Zähnen an.The form roller is freely rotatable according to the invention and thus adapts to the teeth to be formed without difficulty and gear coupling with the drive of the receiving tool.
Falls dies erforderlich sein sollte, ist es natürlich möglich, einen Synchronlauf zwischen Formrolle und Aufnahmewerkzeug einzusetzen.If this should be necessary, it is of course possible to use a synchronous run between the forming roller and the receiving tool.
Um ein unkontrolliertes Fließen des von den Zähnen des Werkzeuges verdrängten Mate ales zu vermeiden, wird gemäß der Erfindung weiterhin vorgeschlagen, daß mindestens im Randbereich des Werkstückes eine Begrenzungseinrichtung vorgesehen ist, die vorzugsweise durch zwei zusammenwirkende Druck- rollen gebildet wird, die das ausfließende Material zwischen sich halten, ggf. formen und begrenzen.In order to avoid an uncontrolled flow of the material displaced by the teeth of the tool, it is further proposed according to the invention that at least in the edge region of the workpiece a limiting device is provided, which is preferably formed by two interacting pressure rollers which between the outflowing material hold, shape and limit if necessary.
Um ein überflüssiges Ausfließen von Material zu vermeiden, wird gemäß der Erfindung auch vorgeschlagen, daß der umzu- formende Umfangsbereich des Werkstückes optimiert wird, beispielsweise konkav nach innen gewölbt ist oder über geradlinige Flächen nach innen ausgenommen ist, so daß nur so viel Material im Umfangsbereich des Werkstückes vorhanden ist, wie für die Bildung des eigentlichen Zahnes erforderlich ist.In order to avoid an unnecessary outflow of material, it is also proposed according to the invention that the circumferential area of the workpiece to be reshaped is optimized, for example concavely curved inwards or recessed inward via straight surfaces, so that only so much material in the circumferential area of the workpiece is present, as is necessary for the formation of the actual tooth.
Das erfindungsgemäße Verfahren kennzeichnet sich im wesentlichen dadurch, daß mehrere Formrollen gleichzeitig am Werkstück zum Einsatz kommen können. Hierdurch wird der durch das Drücken der Formrolle in das Werkstück hinein auftretende Druck auf das Aufnahmewerkzeug minimiert, da dieser Druck von der ggf. gegenüberliegenden Formrolle aufgenommen wird. Hierbei können zwei, drei oder auch mehrere Formrollen am Umfang des Werkstückes vorgesehen werden.The method according to the invention is essentially characterized in that several form rollers can be used simultaneously on the workpiece. As a result, the pressure on the holding tool that occurs due to the pressing of the forming roller into the workpiece is minimized, since this pressure is absorbed by the possibly opposite forming roller. Two, three or even more form rollers can be provided on the circumference of the workpiece.
Schließlich wird gemäß der Erfindung vorgeschlagen, daß das Werkstück in eine rotierende hin- und hergehende Bewegung versetzt wird, wodurch die beiden Flanken des gebildeten Zahnes gleichmäßig durch die Formrolle beaufschlagt werden, so daß hier Unterschiede in den Zahnflanken vermieden werden.Finally, it is proposed according to the invention that the workpiece is set in a rotating back and forth movement, whereby the two flanks of the tooth formed are acted upon uniformly by the form roller, so that differences in the tooth flanks are avoided here.
Ausführungsbeispiel der Erfindung werden nachfolgend anhand der Zeichnungen erläutert.Embodiment of the invention are explained below with reference to the drawings.
Die Zeichnungen zeigen dabei in denThe drawings show in the
Fig. 1 und 2 in einer Schnittdarstellung die verschiedenen Stufen des Werkzeuges im Verhältnis zum Werkstück, in Fig. 3 in einer schaubildlichen Darstellung eine1 and 2 in a sectional view, the various stages of the tool in relation to the workpiece, in Fig. 3 in a diagrammatic representation
Ansicht auf das Formwerkzeug, in Fig. 4 in einer schaubildlichen Darstellung eineView of the mold, in Fig. 4 in a diagrammatic representation
Anordnung zur Herstellung eines verzahnten Getriebeteiles mit den erfindungsgemäßen Formwerkzeugen und in den Fig. 5 und 6 Umfangsbereiche des Werkstückes.Arrangement for producing a toothed gear part with the molding tools according to the invention and in FIGS. 5 and 6 circumferential areas of the workpiece.
In den Zeichnungen ist ein Aufnahmewerkzeug 1 gezeigt, das um eine X-X umläuft. Ein Werkstück 3 oder Rohteil wird von einem Vorsetzer 2 am Aufnahmewerkzeug 1 festgelegt. Eine Formrolle 4 besteht z. B. aus vier einzelnen Umformbereichen 4a, 4b, 4c und 4d, wobei diese Formrolle 4 um eine Achse Y-Y umlaufen kann und frei drehbar gelagert ist.In the drawings, a pick-up tool 1 is shown which rotates around an X-X. A workpiece 3 or blank is fixed on the holding tool 1 by a presetter 2. A form roller 4 is, for. B. from four individual forming areas 4a, 4b, 4c and 4d, which form roller 4 can rotate about an axis Y-Y and is freely rotatable.
Das Aufnahmewerkzeug 1 wird umlaufend angetrieben und vorzugsweise in eine hin- und hergehende, umlaufende Bewegung, die beispielsweise 180° oder 120° betragen kann. Zu Beginn des Arbeitsvorganges wird der Umformbereich 4a gegenüber der radialen Außenkante des Werkstückes 3 eingestellt und dann auf das Werkstück 3 zugestellt und dabei wird der Zahnbereich 5a mit der Außenkante des Werkstückes 3 in Kontakt gebracht und durch Drücken eine Ausnehmung geformt.The holding tool 1 is driven in a revolving manner and preferably in a reciprocating, revolving movement, which can be, for example, 180 ° or 120 °. At the beginning of the working process, the forming area 4a is set in relation to the radial outer edge of the workpiece 3 and then advanced to the workpiece 3, and the tooth area 5a is brought into contact with the outer edge of the workpiece 3 and a recess is formed by pressing.
Danach wird das Werkstück 3 bzw. Rohteil in Drehung versetzt.Then the workpiece 3 or blank is rotated.
Anschließend wird die Formrolie 4 in Richtung ihrer Y-Achse um einen Umformbereich weiter verstellt, so daß dann der Zahnbe- reich 5b des Umformbereiches 4b mit dem Werkstück 3 inSubsequently, the form sheet 4 is adjusted further in the direction of its Y axis by a forming area, so that the tooth area 5b of the forming area 4b with the workpiece 3 in
Kontakt gebracht werden kann. Hierbei bildet sich dann ein gegenüber dem vorherigen Zahnbereich vertiefter Zahnbereich. Die letzte, durch den Umformbereich 4d gebildete Ausnehmung in dem Werkstück 3 ist in Fig. 2 mit 6d bezeichnet.Can be brought in contact. This then forms a tooth area that is recessed compared to the previous tooth area. The last recess in the workpiece 3 formed by the forming region 4d is designated 6d in FIG. 2.
Bei der in Fig. 4 dargestellten Ausführungsform sind Begrenzungseinrichtungen 7 und 8 vorgesehen, die bei der Darstellung außerhalb des Eingriffes mit dem Umfangsbereich 11 des Werkstückes 3, z. B. einer Ronde, dargestellt sind, aber bei Durchführen des Arbeitsverfahrens in diesem Umfangsbereich stehen. Jede Begrenzungseinrichtung 7 bzw. 8 weist Druckrollen 9 und 10 auf, die nunmehr ein unkontrolliertes Fließen des von den Zähnen, beispielsweise 5a, verdrängten Materials verhindern.In the embodiment shown in FIG. 4, limiting devices 7 and 8 are provided, which in the illustration are out of engagement with the peripheral region 11 of the workpiece 3, for. B. a round blank are shown, but are in this circumferential area when performing the working process. Each limiting device 7 or 8 has pressure rollers 9 and 10, which now prevent the material displaced by the teeth, for example 5a, from flowing out in an uncontrolled manner.
Fig. 5 zeigt als Ausführungsbeispiel im Schnitt den Umfangsbereich des Werkstückes 3, das zur Optimierung des abfließenden Materials eine konkave Wölbung 12 aufweist, während gemäß Fig. 6 diese Optimierung durch geradlinige Einschnitte oder Ausnehmungen 14 erreicht wird. FIG. 5 shows an exemplary embodiment in section of the peripheral region of the workpiece 3, which has a concave curvature 12 for optimizing the flowing material, while according to FIG. 6 this optimization is achieved by straight cuts or recesses 14.

Claims

Patentansprüche: Claims:
1. Werkzeug zur Herstellung eines außen verzahnten Getriebeteiles durch ein Drückverfahren mit einem das von einem Vorsetzer (2) beaufschlagte Werkstück (3) tragenden und zu einer Drehbewegung angetriebenen Aufnahmewerkzeug (1 ) und einer in einem Träger um eine parallel zur Achse (X) des Aufnahmewerkzeuges (1 ) ausgerichteten Achse (Y) drehbar gelagerten Formrolle (4), die in Richtung ihrer Y-Achse gegenüber dem Werkstück (3) verstellbar ist und in Richtung ihrer Y-Achse in mehrere aufeinanderfolgende Umformbereiche (4a, 4b, 4c, 4d) mit ansteigender Zahntiefe aufgeteilt ist, wobei die Formrolle (4) senkrecht zu ihrer Y-Achse, d. h. also radial zur Durchführung des Drückverfahrens auf das Werkstück (3) zustellbar ist und die Zahnhöhe der einzelnen Umformbereiche (4a, 4b, 4c, 4d) ansteigend ist, dadurch gekennzeichnet, daß der Kopfkreis bei allen Umformbereichen (4a - 4d) der Formrolle (4) gleich ist, der Radius des Fußkreises der einzelnen Umformbereiche (4a - 4d) sich vom Umformbereich (4a) bis zum Umformbereich (4d) verringert, die Zahntiefe vom Umformbereich (4a) bis zum Umformbereich (4d) ansteigend ist und damit die Zahndicke am Fußkreis bei allen Umformbereichen (4a - 4d) zunehmend ist.1. Tool for producing an externally toothed gear part by a pressing process with a receiving tool (1) carrying the workpiece (3) acted upon by a step-up element (2) and driven to rotate and one in a carrier about a parallel to the axis (X) of the Recording tool (1) aligned axis (Y) rotatably mounted form roller (4), which is adjustable in the direction of its Y-axis relative to the workpiece (3) and in the direction of its Y-axis in several successive forming areas (4a, 4b, 4c, 4d ) is divided with increasing tooth depth, the form roller (4) perpendicular to its Y axis, d. H. This means that the workpiece (3) can be pushed radially to carry out the pressing process and the tooth height of the individual forming areas (4a, 4b, 4c, 4d) increases, characterized in that the tip circle for all forming areas (4a - 4d) of the form roller (4 ) is the same, the radius of the root circle of the individual forming areas (4a - 4d) decreases from the forming area (4a) to the forming area (4d), the tooth depth from the forming area (4a) to the forming area (4d) increases and thus the tooth thickness at Foot circle is increasing in all forming areas (4a - 4d).
2. Werkzeug nach Anspruch 1 , dadurch gekennzeichnet, daß die Formrolle (4) frei drehbar gelagert ist.2. Tool according to claim 1, characterized in that the form roller (4) is freely rotatable.
3. Werkzeug nach Anspruch 1 oder 2, gekennzeichnet durch mindestens eine im Randbereich des Werkstückes (3) vorgesehene, durch zwei zusammenwirkende Druckrollen (9, 10) gebildete Begrenzungseinrichtungen (7, 8). 3. Tool according to claim 1 or 2, characterized by at least one in the edge region of the workpiece (3) provided by two interacting pressure rollers (9, 10) formed limiting devices (7, 8).
4. Werkzeug nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der umzuformende Umfangsbereich des Werkstückes (3) zur Verringerung des abfließenden Materials optimiert ist.4. Tool according to one of the preceding claims, characterized in that the circumferential region of the workpiece (3) to be formed is optimized to reduce the outflowing material.
5. Verfahren zur Herstellung eines außen verzahnten Getriebeteiles durch Drücken mit einem das von einem Vorsetzer (2) beaufschlagte Werkstück (3) tragenden und zu einer Drehbewegung angetriebenen Aufnahmewerkzeug (1 ) und einer in einem Träger um eine parallel zur Achse5. A method for producing an externally toothed gear part by pressing with a holding tool (1) carrying the workpiece (3) acted upon by a step-up element (2) and driven to rotate and one in a carrier about a parallel to the axis
(X) des Aufnahmewerkzeuges (1 ) ausgerichteten Achse (Y) frei drehbar gelagerten Formrolle, die in Richtung ihrer Y-Achse gegenüber dem Werkstück (3) verstellbar ist und in Richtung ihrer Y-Achse in mehrere aufeinanderfol- gende Umformbereiche mit ansteigender Zahntiefe aufgeteilt ist, wobei die Formrolle (4) senkrecht zu ihrer Y- Achse zur Durchführung des Drückvorganges auf das Werkstück zustellbar ist und die Zahnhöhe der einzelnen Umformbereiche (4a, 4b, 4c, 4d) ansteigend ist, dadurch gekennzeichnet, daß mehrere Formrollen (4) gleichzeitig am Werkstück (3) zum Einsatz kommen.(X) of the receiving tool (1) aligned axis (Y) freely rotatable form roller, which is adjustable in the direction of its Y axis relative to the workpiece (3) and divided in the direction of its Y axis into several successive forming areas with increasing tooth depth The form roller (4) can be set perpendicular to its Y axis to carry out the pressing process on the workpiece and the tooth height of the individual forming areas (4a, 4b, 4c, 4d) increases, characterized in that several form rollers (4) can be used simultaneously on the workpiece (3).
6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß das Werkstück (3) eine rotierende hin- und herge- hende Bewegung ausführt. 6. The method according to claim 5, characterized in that the workpiece (3) carries out a rotating reciprocating movement.
EP99914413A 1998-10-08 1999-02-10 Tool for producing a gear part having external toothing Expired - Lifetime EP1119426B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE29819979U 1998-10-08
DE29817979U DE29817979U1 (en) 1998-10-08 1998-10-08 Tool for producing an externally toothed gear part
DE29817979U 1998-10-08
PCT/DE1999/000387 WO2000021699A1 (en) 1998-10-08 1999-02-10 Tool for producing a gear part having external toothing

Publications (2)

Publication Number Publication Date
EP1119426A1 true EP1119426A1 (en) 2001-08-01
EP1119426B1 EP1119426B1 (en) 2002-11-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99914413A Expired - Lifetime EP1119426B1 (en) 1998-10-08 1999-02-10 Tool for producing a gear part having external toothing

Country Status (6)

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US (1) US6470724B1 (en)
EP (1) EP1119426B1 (en)
JP (1) JP2002527243A (en)
DE (2) DE29817979U1 (en)
ES (1) ES2183537T3 (en)
WO (1) WO2000021699A1 (en)

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WO2005084857A1 (en) * 2004-03-03 2005-09-15 Weidmer Stan C Method and apparatus for patterning of bore surfaces
DE102004014863A1 (en) * 2004-03-26 2005-10-13 Wf-Maschinenbau Und Blechformtechnik Gmbh & Co Kg Method and device for producing an externally profiled gear part
US7717652B2 (en) * 2005-01-18 2010-05-18 Makino, Inc. Tool with selectively-biased member having an adjustment feature
US7090445B2 (en) * 2005-01-18 2006-08-15 Makino, Inc. Tool with selectively-biased member
US7806635B2 (en) * 2007-03-07 2010-10-05 Makino, Inc. Method and apparatus for producing a shaped bore
EP2125266B1 (en) 2007-03-19 2021-06-02 Magna Powertrain Inc. Method for manufacturing a toothed disc
FR2921572B1 (en) * 2007-09-28 2009-12-11 Snecma DEVICE FOR CIRCULAR CONFORMATION OF A REVOLUTION PART, IN PARTICULAR AN EXHAUST CASE OF A TURBOMACHINE
DE102011011438A1 (en) * 2011-02-16 2012-08-16 Form Technology Gmbh Method for manufacturing planetary carrier as part of planetary gear, involves engaging web star pins through recesses in web plate, and connecting star pins with web plate as reshaped pin in form-fit manner by roll forming process

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DE4335505C1 (en) * 1993-10-19 1994-08-25 Wf Maschinenbau Blechformtech Device for producing a gear part which is toothed on the outside
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Also Published As

Publication number Publication date
DE29817979U1 (en) 1999-01-14
EP1119426B1 (en) 2002-11-20
DE59903494D1 (en) 2003-01-02
JP2002527243A (en) 2002-08-27
ES2183537T3 (en) 2003-03-16
WO2000021699A1 (en) 2000-04-20
US6470724B1 (en) 2002-10-29

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