EP0725693A1 - Method for the non-cutting production of a transmission component hub - Google Patents

Method for the non-cutting production of a transmission component hub

Info

Publication number
EP0725693A1
EP0725693A1 EP94909865A EP94909865A EP0725693A1 EP 0725693 A1 EP0725693 A1 EP 0725693A1 EP 94909865 A EP94909865 A EP 94909865A EP 94909865 A EP94909865 A EP 94909865A EP 0725693 A1 EP0725693 A1 EP 0725693A1
Authority
EP
European Patent Office
Prior art keywords
sheet metal
tool
hub
tool pin
metal plate
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
EP94909865A
Other languages
German (de)
French (fr)
Other versions
EP0725693B1 (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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25931922&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0725693(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE4400257A external-priority patent/DE4400257C1/en
Application filed by WF Maschinenbau und Blechformtecknik GmbH and Co KG filed Critical WF Maschinenbau und Blechformtecknik GmbH and Co KG
Priority claimed from PCT/DE1994/000209 external-priority patent/WO1994020235A1/en
Publication of EP0725693A1 publication Critical patent/EP0725693A1/en
Application granted granted Critical
Publication of EP0725693B1 publication Critical patent/EP0725693B1/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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/261—Making other particular articles wheels or the like pulleys
    • 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
    • Y10T29/49481—Wheel making
    • Y10T29/49492—Land wheel
    • Y10T29/49533—Hub making
    • Y10T29/49536—Hub shaping

Definitions

  • the invention relates to a method for the non-cutting production of a hub of a gear part comprising the hub from a sheet metal plate.
  • Gear parts designed as sprockets or as pulleys, in particular poly-V belt pulleys, are used extensively in motor vehicle construction and are nowadays often produced from a round blank by pressing processes.
  • the formation of the toothing and / or the grooves is also possible in the pressing process, while the installation of the required hub is difficult.
  • the actual hub is a sleeve-shaped in the area of the axis of rotation
  • the hub of a gear part is produced by connecting a prefabricated cylindrical sleeve part to the gear part, four methods being used as the connection, namely one soldering of the two components , welding the two components, the connection of the two components by friction welding and finally it is possible to manufacture the gear part by a forging process.
  • the cost of producing the hub as a turned part is relatively high.
  • Manufacture sheet metal parts these outer lamellar beams are manufactured in two press passes. A total of 27 processing stages are required to produce such an outer arm. They comprise 10 drawing, 7 calibration, 2 ironing and drawing processes, 7 cutting processes and 1 upsetting process. The structure is torn apart by the drawing work, i. H. the material structure is tired. In addition, pulling operations are usually associated with inaccuracies which can have a disadvantageous effect on a transmission part.
  • the object of the invention is to simplify the generic method and to carry it out in one work step without the material structure of the transmission part being influenced undesirably.
  • the hub of the gear part is produced in one work step, but it is also possible that the wall thickness of the hub is greater or greater than the wall thickness of the sheet metal plate of the gear part, so that the required strength is achieved here to transmit the torque is reached.
  • the hub is molded onto the intermediate pulley product in one setting on a spinning machine.
  • the method is used, there is the possibility of producing intermediate pulley products for all known production methods for pulleys, since the thicknesses in the contour area and in the professional area of the intermediate pulley products are determined by the pressing method used. Exemplary embodiments of the methods according to the invention are explained below with reference to the drawings. The drawings show in
  • Fig. 1 a clamped hood in one
  • FIG. 5 shows a sheet metal plate inserted into a pressing device
  • FIG. 6 the deformation of the sheet metal plate to
  • a hood 2 is shown, which is fixed to a tool 3 of a main spindle 4 by a chuck 15 belonging to the tool 3. 35
  • the tool 3 has a zen in the axial direction trisch projecting tool pin 5, which rests on the inside of the clamped hood 2 or comes to rest, with a front 8 is applied to the outside of the hood 2.
  • the double arrow F shown in FIG. 1 clarifies the direction of movement of the main spindle 4 and the step-up 8 for fixing the hood 2.
  • FIG. 2 shows that the cover 2 is deformed in the direction of the cylindrical tool pin 5 by the action of pressure rollers 9 and 10, the deformation then being continued as far as possible by using a form roller 11 shown in FIG. 3 until the hood has wrapped around the tool pin 5.
  • the hood 2 has partially applied as a round 6 to the top of the tool 3, while the remaining part of the hood 2 has waved around the tool pin 5 according to FIG. 3.
  • this undulating region around the tool pin 5 is pressed together by thickening rollers 1 and 12 and 14, the part of the hood 2 then serving as a hub is cylindrical, the wall thickness of this cylindrical part Projection 7 can be greater than the wall thickness of the blank.
  • the delivery 1 direction of the compression rollers 12 and 14 is illustrated by the arrows F in FIG. 4.
  • the cylindrical projection 7 so that it can receive a shaft or a pin.
  • the opening of the cylindrical projection 7 can either be done by cutting off the bead of the cylindrical projection 7 shown in FIG. 4, but it is also possible to cover the end wall of the cylindrical projection 7 with holes or the like. to open so that the hub finally achieved has the bulge which contributes to the strength.
  • the flanges 16 and 17 can then be machined to design the gear part.
  • 21 denotes a sheet metal plate 35 which is connected to a main spindle 22 arranged tool is arranged in that in the illustrated embodiment, the tool 23 carries a tool pin 24 onto which the sheet metal plate 21 can be placed by means of a hole provided centrally in the sheet metal plate.
  • 25 is a front attachment which is movable back and forth and comes into contact with the tool pin 24 in its working position.
  • the presetter 25 has in the area of the sheet metal plate 21 an outer diameter that is larger than the outer diameter of the tool pin 24, so that thereby a stop designated in the drawing with 34 is created, to which the inner part of the sheet metal plate deforms Can create sheet metal.
  • a chuck working together with the tool 23 is designated, which, after a pressure roller 26 has bent the outer edge region of the sheet metal plate, defines this edge area of the sheet metal plate 21, so that migration of the sheet metal plate is prevented.
  • the pressure roller 21 can be moved towards the tool pin 24 in the direction of the arrow shown in FIG. 6 and, as this is particularly clearly shown in FIG. 7, reduces the mean wall thickness of the sheet metal plate 21, this being due to the pressure roller 26 pressed material flows into the space which is present around the tool pin 24 and, as is clearly shown in FIG. 8, bears against the stop 34, so that a cylindrical projection 28 is thereby created which is in the intermediate pulley product the actual hub 27 according to FIG. 9 forms. From the drawing, in particular in comparison to FIGS.
  • edge area of the sheet metal plate 21 defined by the chuck 29 is thicker than the central edge area of the sheet metal plate 21 and that again the cylindrical projection 28 is essential has a greater material thickness than the central edge region of the sheet metal plate 21.
  • the edge area of the sheet metal plate 21 defined by the chuck 29 is thicker than the central edge area of the sheet metal plate 21 and that again the cylindrical projection 28 is essential has a greater material thickness than the central edge region of the sheet metal plate 21.
  • this wall thickness of the cylindrical projection 28 can be determined.
  • the trailing roller 35 15 shown in FIGS. 7 and 8 prevents the material of the sheet metal plate 21 from bending up during the pressing process.
  • the pulley - as under ⁇ . and shown - should have a contour area K. and possibly a perforation 11, this contour area can possibly be made with the perforation on a press from that of the
  • the material structure of the intermediate pulley product is not subject to any negative influences, such as. B. in welding and forging,
  • the inside diameter of the hub can be produced by the pressing process without subsequent rolling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Forging (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)

Abstract

The invention concerns a method and device for the non-cutting production of a hub (27) for a transmission component. A sheet blank (21) which is carried by a tool (3) on a main spindle (4) and rotated relative to one or more presser rollers (9, 10) is formed to produce a cylindrical prominence (7), projecting from the sheet by pressing it with a presser roller round a pin (5) mounted on the tool or a mobile stop (8) and passing through said sheet.

Description

"Verfahren zur spanlosen Herstellung einer Nabe eines die Nabe aufweisenden Getriebeteiles" "Method for non-cutting production of a hub of a gear part having the hub"
Die Erfindung bezieht sich auf ein Verfahren zur spanlosen Herstellung einer Nabe eines die Nabe aufweisenden Getriebeteiles aus einer Blechplatine.The invention relates to a method for the non-cutting production of a hub of a gear part comprising the hub from a sheet metal plate.
5 Als Zahnkränze ausgebildete oder als Riemenscheiben, insbesondere Poly-V-Ri emenschei en , ausgebildete Getriebeteile sind in großem Umfang im Kraftfahr¬ zeugbau im Einsatz und werden heute ausgehend von einer Ronde vielfach durch Drückverfahren herge-5 Gear parts designed as sprockets or as pulleys, in particular poly-V belt pulleys, are used extensively in motor vehicle construction and are nowadays often produced from a round blank by pressing processes.
10 stellt. Das Ausbilden der Verzahnungen und/oder der Rillen ist dabei ebenfalls im Drückverfahren mög¬ lich, während der Einbau der erforderlichen Nabe Schwierigkeiten bereitet. Die eigentliche Nabe ist dabei im Bereich der Drehachse ein hül senförmi ges10 places. The formation of the toothing and / or the grooves is also possible in the pressing process, while the installation of the required hub is difficult. The actual hub is a sleeve-shaped in the area of the axis of rotation
15 Teil der rotierenden Scheibe, der die Verbindung zu der durchgeschobenen Welle, Achse oder einem Zapfen herstel 1 . Ein solches Bauteil wird beis ielsweise in der US-PS 26 96 740 dargestellt und beschrieben.15 part of the rotating disc, which connects to the shaft, shaft or a pin 1. Such a component is shown and described, for example, in US Pat. No. 2,696,740.
Das Herstellen der Nabe eines Getriebeteiles erfolgt 5 dabei im Stand der Technik dadurch, daß ein vorge¬ fertigtes zylindrisches Hülsenteil mit dem Getriebe¬ teil verbunden wird, wobei als Verbindung üblicher¬ weise vier Verfahren eingesetzt werden, nämlich ein¬ mal ein Verlöten der beiden Bauteile, ein Ver- 10 schweißen der beiden Bauteile, die Verbindung der beiden Bauteile durch Reibschweißen und schließlich ist es möglich, das Getriebeteil auch durch ein Schmiedeverfahren herzustellen.In the prior art, the hub of a gear part is produced by connecting a prefabricated cylindrical sleeve part to the gear part, four methods being used as the connection, namely one soldering of the two components , welding the two components, the connection of the two components by friction welding and finally it is possible to manufacture the gear part by a forging process.
15 Die drei erstgenannten Verfahrensweisen haben den Nachteil , daß durch die zwingend erforderliche Wärmebehandlung eine nachteilige Beeinflussung des eigentlichen Getriebeteiles auftritt, wobei - wenn ein Verschweißen erfolgt - ein nachträgliches Be-15 The three first-mentioned procedures have the disadvantage that the absolutely necessary heat treatment adversely affects the actual gear part, whereby - if welding takes place - a subsequent treatment
20 arbeiten der Schweißnaht erforderlich ist. Der20 work the weld is required. The
Kostenaufwand zur Herstellung der Nabe als Drehteil ist rel ati v hoch .The cost of producing the hub as a turned part is relatively high.
Der durch die Wärmebehandlung bedingte Verzug des 25 Getriebeteiles muß anschließend wieder durch be¬ stimmte Bearbeitungsverfahren entfernt werden.The distortion of the gear part caused by the heat treatment must then be removed again by certain processing methods.
Der Ausschußanteil nicht planlaufender Getriebeteile einer solchen Fertigungsstraße ist sehr hoch.The proportion of rejects in gear components of such a production line that are not running flat is very high.
3030
Der Einsatz geschmiedeter Getriebeteile ist kosten¬ aufwendig und außerdem tritt eine unerwünschte Me¬ tall Verhärtung auf, d. h. das Gefüge wird verändert, so daß das nachträgliche Aufbringen der Profilie-The use of forged gear parts is expensive and, in addition, undesired metal hardening occurs, ie. H. the structure is changed so that the subsequent application of the profiling
35 rungen des Getriebeteiles, sei es als Zahnkranz, sei es als Rillen für Riemenscheiben, außerordentlich schwierig wird. Schließlich verzundert die Ober¬ fläche dieses Getriebeteiles, was zusätzliche Be¬ arbeitungsschritte notwendig macht.35 stanchions of the gear part, be it as a ring gear it becomes extremely difficult as pulley grooves. Finally, the surface of this gear part scales, which makes additional processing steps necessary.
Zusammenfassend ist also festzustellen, daß der bis¬ herige Aufwand, um eine Nabe an einem relativ kleinen Getriebeteil festzulegen, sehr aufwendig ist, daß der Ausschußanteil bei der Fertigung hoch ist und unerwünschte Materi al beei nf1 ussungen auf¬ treten, die die Lebensdauer des Getriebeteiles be¬ einträchtigen können.In summary, it should be noted that the effort to date to fix a hub to a relatively small gear part is very complex, that the reject rate is high during manufacture and that undesirable material effects occur which affect the service life of the gear part can impair.
Aus der Literaturstelle "Blech, Rohre, Profile 1980" Seite 660 ist es bekannt, Außen! a el 1 enträger alsFrom the literature "Sheet metal, pipes, profiles 1980" page 660 it is known, outside! a el 1 bearer than
Blechformtei herzustellen, wobei diese Außenlamel- lenträger in zwei Preßdurchgängen gefertigt werden. Insgesamt sind zur Herstellung eines solchen Außen- 1 amel 1 enträgers 27 Bearbeitungsstufen erforderlich. Sie umfassen 10 Zieh-, 7 Kalibrier-, 2 Abstreck- gleitzieh- und 7 Schneidvorgänge sowie 1 Stauchvor¬ gang. Durch die Zieharbeiten wird das Gefüge ausein¬ andergerissen, d. h. das Materi al gefüge ermüdet. Außerdem sind Ziehvorgänge üblicherweise mit Unge- nauigkeiten verbunden, die sich bei einem Getriebe¬ teil nachteilig auswirken können.Manufacture sheet metal parts, these outer lamellar beams are manufactured in two press passes. A total of 27 processing stages are required to produce such an outer arm. They comprise 10 drawing, 7 calibration, 2 ironing and drawing processes, 7 cutting processes and 1 upsetting process. The structure is torn apart by the drawing work, i. H. the material structure is tired. In addition, pulling operations are usually associated with inaccuracies which can have a disadvantageous effect on a transmission part.
Der Erfindung liegt die Aufgabe zugrunde, das gat¬ tungsgemäße Verfahren zu vereinfachen und in einem Arbeitsgang durchzuführen, ohne daß eine unerwünsch¬ te Beeinflussung des Materi al gefüges des Getriebe¬ teiles eintritt.The object of the invention is to simplify the generic method and to carry it out in one work step without the material structure of the transmission part being influenced undesirably.
Diese der Erfindung zugrundeliegende Aufgabe wird durch die Lehre des Hauptanspruches gelöst. Eine Vorrichtung zur Durchführung dieses Verfahrens ist in dem Unteranspruch erläutert.This object on which the invention is based is achieved by the teaching of the main claim. A device for performing this method is explained in the subclaim.
Diese der Erfindung zugrundeliegende Aufgabe wird auch durch die Lehre des Patentanspruches 3 gelöst. Eine Vorrichtung zur Durchführung des Verfahrens ist in den Unteransprüchen 5 und 6 erläutert.This object on which the invention is based is also achieved by the teaching of patent claim 3. A device for performing the method is explained in subclaims 5 and 6.
Mit anderen Worten ausgedrückt wird im Gegensatz zum Stand der Technik - außer den bereits erwähntenIn other words, in contrast to the prior art - apart from those already mentioned
Schmiedeverfahren und Ziehverfahren zur Herstellung des Getriebeteiles - ein einteiliges Getriebeteil erzielt, bei welchem durch entsprechende Drückma߬ nahmen aus der um eine axiale Welle umlaufenden Ronde das Getriebeteil bei gleichzeitiger Herstel¬ lung der Nabe erzielt wird.Forging and drawing processes for the production of the gear part - a one-part gear part is achieved, in which the gear part is achieved by corresponding pushing measures from the round disk running around an axial shaft while the hub is being produced.
Hierbei ist nicht nur erreichbar, daß in einem Ar¬ beitsgang die Nabe des Getriebeteiles hergestellt wird, sondern es ist gleichzeitig möglich, daß gegenüber der Wanddicke der Blechplatine des Getrie¬ beteiles die Wanddicke der Nabe höher oder größer ist, so daß hier die erforderliche Festigkeit zur Übertragung des Drehmomentes erreicht wird.It is not only achievable that the hub of the gear part is produced in one work step, but it is also possible that the wall thickness of the hub is greater or greater than the wall thickness of the sheet metal plate of the gear part, so that the required strength is achieved here to transmit the torque is reached.
Ausgehend von einer Ronde wird auf einer Dr ckma¬ schine die Nabe an das Riemenscheibenzwischenprodukt in einer Aufspannung angeformt. Es besteht bei An¬ wendung des Verfahrens die Möglichkeit, Riemen¬ scheibenzwischenprodukte für alle bekannten Her¬ stellungsmethoden von Riemenscheiben herzustellen, da die Dicken im Konturbereich und im Profi 1 berei ch der Riemenscheibenzwischenprodukte durch das ange¬ wandte Drückverfahren festgelegt werden. Ausführungsbeispiele für die erfindungsgemäßen Ver¬ fahren werden nachfolgend anhand der Zeichnungen erl utert. Die Zeichnungen zeigen dabei inStarting from a circular blank, the hub is molded onto the intermediate pulley product in one setting on a spinning machine. When the method is used, there is the possibility of producing intermediate pulley products for all known production methods for pulleys, since the thicknesses in the contour area and in the professional area of the intermediate pulley products are determined by the pressing method used. Exemplary embodiments of the methods according to the invention are explained below with reference to the drawings. The drawings show in
5 . Fig. 1 eine aufgespannte Haube in einer5. Fig. 1 a clamped hood in one
Drückvorrichtung, in Fig. 2 die Verformung der Haube durch Drück¬ rollen, in Fig. 3 die Formung des extra zylindrischenPressing device, in FIG. 2 the deformation of the hood by pressing rolls, in FIG. 3 the shaping of the extra cylindrical
10 Nabenteils durch Formrollen, in10 hub part by form rollers, in
Fig. 4 das Endverfor ungsstadi um durch Ein¬ satz von Verdi ckungsrol 1 en zur Er¬ zielung des zylindrischen Nabenteils, i n4 shows the final stage of formation by using thickening rollers to achieve the cylindrical hub part
15 Fig. 5 eine in eine Drückvorrichtung einge¬ setzte Blechplatine, in Fig. 6 die Verformung der Blechplatine zurFIG. 5 shows a sheet metal plate inserted into a pressing device, in FIG. 6 the deformation of the sheet metal plate to
Festlegung derselben an dem Werkzeug, inFixing the same on the tool, in
20 Fig. 7 eine Stufe des Drückverfahrens, bei welchem die Wandstärke des Getriebe¬ teiles verringert und dadurch gleich¬ zeitig die Anformung der Nabe er¬ reicht wird, in7 shows a stage of the pressing process, in which the wall thickness of the gear part is reduced and, at the same time, the shaping of the hub is achieved
25 Fig. 8 das Endstadium des Drückverfahrens bei angeformter Nabe und in Fig. 9 in einer Prinzipskizze mögliche25 Fig. 8 the final stage of the pressing process with molded hub and possible in Fig. 9 in a schematic diagram
Varianten von Riemenscheibenzwischen¬ produkten mit unterschiedlichen DickenVariants of intermediate pulley products with different thicknesses
30 und Nabenlagen.30 and hub positions.
In den Fig. 1 bis 4 ist eine Haube 2 gezeigt, die an einem Werkzeug 3 einer Hauptspindel 4 durch ein zum Werkzeug 3 gehörendes Spannfutter 15 festgelegt ist. 35 Das Werkzeug 3 weist einen in axialer Richtung zen- trisch vorspringenden Werkzeugstift 5 auf, der an der Innenseite der eingespannten Haube 2 anliegt oder zur Anlage kommt, wobei an der Außenseite der Haube 2 ein Vorsetzer 8 anliegt.1 to 4, a hood 2 is shown, which is fixed to a tool 3 of a main spindle 4 by a chuck 15 belonging to the tool 3. 35 The tool 3 has a zen in the axial direction trisch projecting tool pin 5, which rests on the inside of the clamped hood 2 or comes to rest, with a front 8 is applied to the outside of the hood 2.
Die Ausrichtung der an die Haube 2 anschließenden Flansche 16 und 17, die bei der Darstellung in Fig. 1 parallel zum Werkzeugstift 5 und zur Achse der Hauptspindel 4 verlaufen, ist gleichgültig.The orientation of the flanges 16 and 17 adjoining the hood 2, which in the illustration in FIG. 1 run parallel to the tool pin 5 and to the axis of the main spindle 4, is immaterial.
Der in Fig. 1 eingezeichnete Doppelpfeil F, verdeut¬ licht die Bewegungsrichtung von Hauptspindel 4 und Vorsetzer 8 zur Festlegung der Haube 2.The double arrow F shown in FIG. 1 clarifies the direction of movement of the main spindle 4 and the step-up 8 for fixing the hood 2.
Fig. 2 zeigt, daß durch den Angriff von Drückrollen 9 und 10 die Haube 2 in Richtung auf den zylindri¬ schen Werkzeugstift 5 hin verformt wird, wobei dann durch Einsatz einer in Fig. 3 dargestellten Form¬ rolle 11 die Verformung so weit fortgeführt wird, bis die Haube sich um den Werkzeugstift 5 herumge¬ legt hat. Hierbei hat sich die Haube 2 teilweise als Ronde 6 an die Oberseite des Werkzeuges 3 angelegt, während der verbleibende Teil der Haube 2 sich gemäß Fig. 3 wellenförmig um den Werkzeugstift 5 gelegt hat.FIG. 2 shows that the cover 2 is deformed in the direction of the cylindrical tool pin 5 by the action of pressure rollers 9 and 10, the deformation then being continued as far as possible by using a form roller 11 shown in FIG. 3 until the hood has wrapped around the tool pin 5. In this case, the hood 2 has partially applied as a round 6 to the top of the tool 3, while the remaining part of the hood 2 has waved around the tool pin 5 according to FIG. 3.
Wird nunmehr - wie dies die Fig. 4 zeigt - dieser wellenförmige Bereich um den Werkzeugstift 5 herum durch Verdi ckungsrol 1 en 12 und 14 zusammengedrückt, erfolgt eine zylindrische Ausbildung des dann als Nabe dienenden Teiles der Haube 2, wobei die Wand¬ dicke dieses zylindrischen Vorsprunges 7 größer sein kann als die Wanddicke der Ronde.If, as shown in FIG. 4, this undulating region around the tool pin 5 is pressed together by thickening rollers 1 and 12 and 14, the part of the hood 2 then serving as a hub is cylindrical, the wall thickness of this cylindrical part Projection 7 can be greater than the wall thickness of the blank.
Natürlich ist es in diesem Verfahrensbereich mög- lieh, durch Zurückziehen des Vorsetzers 8 ein Aus¬ fließen des Materials zum freien Ende des Werkzeug¬ stiftes 5 hin zu erreichen, so daß es auch möglich ist, die Wanddicke des zylindrischen Vorsprunges 7 5 geringer zu gestalten als die Wanddicke der Ronde 6.Of course it is possible in this process area lent, by withdrawing the front end 8, to achieve an outflow of the material towards the free end of the tool pin 5, so that it is also possible to make the wall thickness of the cylindrical projection 7 5 less than the wall thickness of the round blank 6.
Die Zustel 1 ri chtung der Verdi ckungsrol 1 en 12 und 14 wird durch die Pfeile F in Fig. 4 verdeutlicht.The delivery 1 direction of the compression rollers 12 and 14 is illustrated by the arrows F in FIG. 4.
10 Zusammenfassend ist festzustellen, daß durch den erfindungsgemäßen Vorschlag ein kostengünstiges Herstellungsverfahren für mit einer Nabe ausge¬ rüstete Getriebeteile geschaffen wird, wobei keine Gefügeveränderungen innerhalb des Getriebeteiles bei10 To summarize, it can be stated that the proposal according to the invention creates an inexpensive manufacturing process for gear parts equipped with a hub, with no structural changes within the gear part
15 seiner Herstellung bedingt werden, gleichzeitig die Möglichkeit gegeben wird, die Wanddicke der Nabe beliebig zu gestalten.15 due to its manufacture, at the same time the possibility is given to design the wall thickness of the hub as desired.
Ausgehend von Fig. 4 der vorstehenden Erl uterungen 20 ist es nunmehr notwendig, den zylindrischen Vor¬ sprung 7 zu öffnen, damit dieser eine Welle oder einen Zapfen aufnehmen kann. Die Öffnung des zylin¬ drischen Vorsprunges 7 kann entweder dadurch er¬ folgen, daß der in Fig. 4 ersichtliche Wulst des 25 zylindrischen Vorsprunges 7 abgeschnitten wird, aber es ist auch möglich, die Stirnwand des zylindrischen Vorsprunges 7 durch Bohrungen od. dgl . zu öffnen, so daß dann die endgültig erzielte Nabe den Wulst auf¬ weist, der zur Festigkeit beiträgt. Anschließend an 30 dieses Herstellungsverfahren kann dann die Bearbei¬ tung der Flansche 16 und 17 für die Gestaltung des Getriebeteiles erfolgen.Starting from FIG. 4 of the above explanations 20, it is now necessary to open the cylindrical projection 7 so that it can receive a shaft or a pin. The opening of the cylindrical projection 7 can either be done by cutting off the bead of the cylindrical projection 7 shown in FIG. 4, but it is also possible to cover the end wall of the cylindrical projection 7 with holes or the like. to open so that the hub finally achieved has the bulge which contributes to the strength. Following this manufacturing process, the flanges 16 and 17 can then be machined to design the gear part.
In den Fig. 5 bis 8 ist mit 21 eine Blechplatine 35 bezeichnet, die an einem an eine Hauptspindel 22 angeordneten Werkzeug dadurch angeordnet ist, daß bei dem dargestellten Ausführungsbeispiel von dem Werkzeug 23 ein Werkzeugstift 24 getragen wird, auf den die Blechplatine 21 mittels einer in der Blech¬ platine zentrisch vorgesehenen Loches aufgesetzt werden kann. Mit 25 ist ein Vorsetzer bezeichnet, der hin und her beweglich ist und in seiner Arbeits¬ lage mit dem Werkzeugstift 24 in Kontakt kommt. Der Vorsetzer 25 weist dabei im Bereich zur Blechplatine 21 hin einen Außendurchmesser auf, der größer ist als der Außendurchmesser des Werkzeugstiftes 24, so daß dadurch ein in der Zeichnung mit 34 bezeichneter Anschlag geschaffen wird, an den sich bei Verformung der Blechplatine der innere Teil der Blechplatine anlegen kann.5 to 8, 21 denotes a sheet metal plate 35 which is connected to a main spindle 22 arranged tool is arranged in that in the illustrated embodiment, the tool 23 carries a tool pin 24 onto which the sheet metal plate 21 can be placed by means of a hole provided centrally in the sheet metal plate. 25 is a front attachment which is movable back and forth and comes into contact with the tool pin 24 in its working position. The presetter 25 has in the area of the sheet metal plate 21 an outer diameter that is larger than the outer diameter of the tool pin 24, so that thereby a stop designated in the drawing with 34 is created, to which the inner part of the sheet metal plate deforms Can create sheet metal.
Mit 29 ist ein mit dem Werkzeug 23 zusammenarbeiten¬ des Spannfutter bezeichnet, das, nachdem eine Drück¬ rolle 26 den äußeren Randbereich der Blechplatine umgebogen hat, diesen Randbereich der Blechplatine 21 festlegt, so daß dadurch ein Auswandern der Blechplatine verhindert wird.With 29 a chuck working together with the tool 23 is designated, which, after a pressure roller 26 has bent the outer edge region of the sheet metal plate, defines this edge area of the sheet metal plate 21, so that migration of the sheet metal plate is prevented.
Die Drückrolle 21 kann im Sinne des in Fig. 6 einge- zeichneten Pfeiles auf den Werkzeugstift 24 zu be¬ wegt werden und verringert dabei - wie dies besonders deutlich die Fig. 7 zeigt - die mittlere Wandstärke der Blechplatine 21, wobei das durch die Drückrolle 26 gedrückte Material in den Raum fließt, der um den Werkzeugstift 24 vorhanden ist und sich - wie dies Fig. 8 deutlicht zeigt - gegen den An¬ schlag 34 anlegt, so daß dadurch ein zylindrischer Vorsprung 28 geschaffen wird, der in dem Riemen¬ scheibenzwischenprodukt die eigentliche Nabe 27 gemäß Fig. 9 bildet. Aus der Zeichnung, insbesondere im Vergleich zu Fig. 6 und 8, ist erkennbar, daß der durch das Spannfutter 29 festgelegte Randbereich der Blech¬ platine 21 dicker als der mittlere Randbereich der Blechplatine 21 ist und daß wiederum der zylindri¬ sche Vorsprung 28 eine wesentlich größere Material¬ dicke aufweist als der mittlere Randbereich der Blechplatine 21. In Abhängigkeit der Größe des Raumes zwischen dem Anschlag 34 des Vorsetzers 25The pressure roller 21 can be moved towards the tool pin 24 in the direction of the arrow shown in FIG. 6 and, as this is particularly clearly shown in FIG. 7, reduces the mean wall thickness of the sheet metal plate 21, this being due to the pressure roller 26 pressed material flows into the space which is present around the tool pin 24 and, as is clearly shown in FIG. 8, bears against the stop 34, so that a cylindrical projection 28 is thereby created which is in the intermediate pulley product the actual hub 27 according to FIG. 9 forms. From the drawing, in particular in comparison to FIGS. 6 and 8, it can be seen that the edge area of the sheet metal plate 21 defined by the chuck 29 is thicker than the central edge area of the sheet metal plate 21 and that again the cylindrical projection 28 is essential has a greater material thickness than the central edge region of the sheet metal plate 21. Depending on the size of the space between the stop 34 of the front 25
10 und der Außenseite des Werkzeuges 23 kann diese Wandstärke des zylindrischen Vorsprunges 28 be¬ stimmt werden.10 and the outside of the tool 23, this wall thickness of the cylindrical projection 28 can be determined.
Die in Fig. 7 und 8 eingezeichnete Nachlaufrolle 35 15 verhindert ein Hochbiegen des Materials der Blech¬ platine 21 während des Drückverfahrens.The trailing roller 35 15 shown in FIGS. 7 and 8 prevents the material of the sheet metal plate 21 from bending up during the pressing process.
In Fig. 9 sind unter den Positionen A, bis _ mögliche Varianten von Riemenscheibenzwischenprodukten mitIn Fig. 9, under the positions A, to _ are possible variants of intermediate pulley products
20 unterschiedlichen Dicken und Nabenlagen dargestellt. Falls die Riemenscheibe - wie unter ϊ. und darge¬ stellt - einen Konturbereich K. und ggf. eine Lochung 11 aufweisen soll , so kann dieser Konturbereich ggf. mit der Lochung auf einer Presse aus dem von der20 different thicknesses and hub positions are shown. If the pulley - as under ϊ. and shown - should have a contour area K. and possibly a perforation 11, this contour area can possibly be made with the perforation on a press from that of the
25 Drückmaschine hergestellten Riemenscheibenzwischen¬ produkt leicht hergestellt werden. Es besteht ferner die Möglichkeit, einfache Konturbereiche direkt auf der Drückmaschine durch zusätzliche Werkzeugträger zu erzeugen.25 spinning machine intermediate pulley manufactured easily. It is also possible to create simple contour areas directly on the spinning machine using additional tool carriers.
3030
Zusammenfassend kann also festgestellt werden, daß gegenüber dem bisher bekannten Herstellungsverfahren die erfindungsgemäßen Drückverfahren folgende Vor- tei 1 e aufwei sen :In summary, it can thus be stated that, compared to the previously known production process, the spinning processes according to the invention have the following advantages:
35 1. Geringerer Maschineneinsatz,35 1. Less machine use,
2. das Materi algefüge des Riemenscheibenzwischen¬ produktes unterliegt keinen negativen Ein¬ flüssen, wie z. B. beim Schweißen und Schmieden,2. The material structure of the intermediate pulley product is not subject to any negative influences, such as. B. in welding and forging,
3. der Nabeninnendurchmesser kann durch das Drück¬ verfahren ohne nachträgliches Rollieren her- gestel 1 t werden,3. the inside diameter of the hub can be produced by the pressing process without subsequent rolling,
4. es bestehen keine Nachteile beim Profilieren der Riemenscheibe durch vorherige Arbeitsgänge,4. there are no disadvantages when profiling the pulley from previous operations,
5. es besteht die Möglichkeit, Nuten oder Ver¬ zahnungen am Nabeninnendurchmesser durch das Drückverfahren ohne Nachbearbeitung herzu¬ stellen, wie dies beispielsweise aus der Dar¬ stellung in Fig. 9 ersichtlich ist, in der beim Drückverfahren die Abziehnut 32 hergestellt werden kann. 5. There is the possibility of producing grooves or toothings on the inner diameter of the hub by means of the pressing process without post-processing, as can be seen, for example, from the illustration in FIG. 9, in which the pulling groove 32 can be produced in the pressing process.

Claims

Patentansprüche :Patent claims:
Verfahren zur spanlosen Herstellung einer Nabe eines die Nabe aufweisenden Getriebe¬ teiles aus einer Blechplatine, wobei die Blechplatine zu einer Haube geformt wird dadurch gekennzeichnet, daß die Haube Method for the non-cutting production of a hub of a gear part having the hub from a sheet metal blank, the sheet metal blank being formed into a hood, characterized in that the hood
(2) durch Drücken um einen zentralen Werkzeug¬ stift (5) zu einem von einer Ronde (6) vor¬ ste enden zylindrischen Vorsprung (7) ver¬ formt wird und der zylindrische Vorsprung (7) anschließend zur Aufnahme einer koaxialen Wel le geöffnet wi rd .(2) is deformed by pressing around a central tool pin (5) into a cylindrical projection (7) protruding from a blank (6) and the cylindrical projection (7) is then opened to accommodate a coaxial shaft becomes .
Vorrichtung zum Durchführen des Verfahrens nach Anspruch 1, gekennzeichnet durch ein von einer Hauptspindel (4) getragenes Werkzeug Device for carrying out the method according to claim 1, characterized by a tool carried by a main spindle (4).
(3) mit Werkzeugstift (5) und Spannfutter (15), einem gegenüber dem Werkzeugstift (5) angeordneten Vorsetzer (8), der zusammen mit dem Werkzeugstift (5) und dem Spannfutter (15) eine Haube (2) festlegt sowie diese aufeinanderfolgend beaufschlagende Druck- rollen (9, 10), Formrollen (11) und Ver- dickungsrollen 12, 14).(3) with tool pin (5) and chuck (15), an attachment (8) arranged opposite the tool pin (5), which together with the tool pin (5) and the chuck (15) defines a hood (2) and these in sequence acting pressure rollers (9, 10), shaping rollers (11) and thickening rollers 12, 14).
Verfahren zur spanlosen Herstellung einer Nabe eines die Nabe aufweisenden Getriebe¬ teiles aus einer Blechplatine, dadurch ge¬ kennzeichnet, daß die von einem Werkzeug (23) einer Hauptspindel (22) getragene und relativ zu einer oder mehreren Drückrollen (26) rotierende Blechplatine (21) durch Drücken mittels der Drückrolle (26) in ihrer Dicke verringert und zu einem von der Blech-Method for the non-cutting production of a hub of a gear part having the hub from a sheet metal blank, characterized in that the sheet metal blank (21) is carried by a tool (23) of a main spindle (22) and rotates relative to one or more pressure rollers (26). ) is reduced in thickness by pressing using the pressing roller (26) and becomes one of the sheet metal
BERICHTIGTES BLATT (REGEL 91) ISA/EP platine (21) vorstehenden zylind ischen Vorsprung (28) um einen am Vorsetzer (25) oder Werkzeug (23) angeordneten, die Blech¬ platine (21) durchdringenden Werkzeugstift (24) verformt wird.CORRECTED SHEET (RULE 91) ISA/EP The cylindrical projection (28) protruding from the plate (21) is deformed around a tool pin (24) arranged on the attachment (25) or tool (23) and penetrating the sheet metal plate (21).
4. Verfahren nach Anspruch 3, dadurch gekenn¬ zeichnet, daß der Randbereich der Blech¬ platine (21) vor Durchführen des die Dicke verringernden DrückVerfahrens festgelegt wird.4. The method according to claim 3, characterized in that the edge region of the sheet metal plate (21) is fixed before carrying out the pressing process that reduces the thickness.
5. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 3 und 4, gekennzeichnet durch ein von einer Hauptspindel (22) getragenes5. Device for carrying out the method according to claims 3 and 4, characterized by a main spindle (22).
Werkzeug (23) mit Werkzeugstift (24) und Spannfutter (29), einem gegenüber dem Werk¬ zeugstift (24) angeordneten Vorsetzer (25), dessen Außenumfang größer als der Durch- messer des Werkzeugstiftes (24) ist und derart einen Anschlag (34) bildet und wenigstens eine parallel zur Ebene der Blechplatine (21) auf das Zentrum der Blechplatine (21) bewegbare Drückrolle (26)Tool (23) with tool pin (24) and chuck (29), an attachment (25) arranged opposite the tool pin (24), the outer circumference of which is larger than the diameter of the tool pin (24) and thus a stop (34 ) and at least one pressure roller (26) which can be moved parallel to the plane of the sheet metal plate (21) onto the center of the sheet metal plate (21).
Vorrichtung nach Anspruch 5, gekennzeichnet durch eine gleichzeitig m t der Drückrolle (26) wirksam werdende Nachlaufrolle (35).Device according to claim 5, characterized by a follower roller (35) which becomes effective at the same time as the pressure roller (26).
BERICHTIGTES BLATT (REGEL 91) ISA/EP CORRECTED SHEET (RULE 91) ISA/EP
EP94909865A 1993-12-09 1994-02-23 Method for the non-cutting production of a transmission component hub Expired - Lifetime EP0725693B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4342086 1993-12-09
DE4342086 1993-12-09
DE4400257A DE4400257C1 (en) 1993-12-09 1994-01-07 Metal spinning method for the chipless production of a hub of a gearing component having the hub
DE4400257 1994-01-07
PCT/DE1994/000209 WO1994020235A1 (en) 1993-03-02 1994-02-23 Method for the non-cutting production of a transmission component hub

Publications (2)

Publication Number Publication Date
EP0725693A1 true EP0725693A1 (en) 1996-08-14
EP0725693B1 EP0725693B1 (en) 1997-07-30

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EP (1) EP0725693B1 (en)
JP (1) JP3053219B2 (en)
CA (1) CA2161020C (en)
ES (1) ES2107817T3 (en)

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CA2161020A1 (en) 1994-09-15
ES2107817T3 (en) 1997-12-01
US5619879A (en) 1997-04-15
EP0725693B1 (en) 1997-07-30
JPH09506295A (en) 1997-06-24
CA2161020C (en) 2000-10-31
JP3053219B2 (en) 2000-06-19

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