EP0725693B1 - Method for the non-cutting production of a transmission component hub - Google Patents
Method for the non-cutting production of a transmission component hub Download PDFInfo
- Publication number
- EP0725693B1 EP0725693B1 EP94909865A EP94909865A EP0725693B1 EP 0725693 B1 EP0725693 B1 EP 0725693B1 EP 94909865 A EP94909865 A EP 94909865A EP 94909865 A EP94909865 A EP 94909865A EP 0725693 B1 EP0725693 B1 EP 0725693B1
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- EP
- European Patent Office
- Prior art keywords
- sheet metal
- metal blank
- tool
- hub
- tool pin
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000005520 cutting process Methods 0.000 title claims abstract description 9
- 230000005540 biological transmission Effects 0.000 title claims abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 9
- 230000008719 thickening Effects 0.000 claims description 4
- 238000009987 spinning Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- 238000005242 forging Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
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 pulleys, are widely used in motor vehicle construction and are today often produced from a round blank by pressing processes.
- the formation of the teeth and / or the grooves is also possible in the spinning process, while the installation of the required hub is difficult.
- the actual hub in the area of the axis of rotation is a sleeve-shaped part of the rotating disk, which establishes the connection to the shaft, axis or a pin pushed through.
- the manufacture of the hub of a gear part takes place in the prior art in that a prefabricated cylindrical sleeve part is connected to the gear part, usually four methods being used as the connection, namely once soldering 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 first three methods mentioned have the disadvantage that the absolutely necessary heat treatment adversely affects the actual gear part, whereby - if welding takes place - a subsequent machining of the weld seam is necessary.
- the cost of manufacturing the hub as a turned part is relatively high.
- outer plate carriers As a sheet metal part, these outer plate carriers being manufactured in two press passes. A total of 27 processing stages are required to produce such an outer disk carrier. They include 10 pulling, 7 calibration, 2 ironing and pulling operations, 7 cutting operations and 1 upsetting operation. The structure is torn apart by the drawing work, i. H. the material structure is tired. In addition, drawing operations are usually associated with inaccuracies that can have a negative impact on a transmission part.
- the object of the invention is to simplify the generic method and to carry it out in one operation, without the material structure of the transmission part being adversely affected.
- the hub of the gear part is produced in one operation, 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 here the required strength for transmitting the torque is achieved.
- the hub is molded onto the intermediate pulley product in one setting on a spinning machine.
- the method there is the possibility of producing intermediate pulley products for all known manufacturing methods of pulley systems, since the thicknesses in the contour area and in the profile area of the intermediate pulley products are determined by the applied pressing method.
- 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.
- the tool 3 has a center in the axial direction projecting tool pin 5, which rests on the inside of the clamped hood 2 or comes to rest, with a front 8 resting on the outside of the hood 2.
- FIG. 1 double arrow F 1 illustrates the direction of movement of the main spindle 4 and 8 Vorsetzer laying down the hood 2.
- Fig. 2 shows that the attack of spinning rollers 9 and 10, the hood 2 is deformed in the direction of the cylindrical tool pin 5, with the use of a form roller 11 shown in Fig. 3, the deformation is continued 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 12 and 14, the part of the hood 2 then serving as a hub is cylindrical, the wall thickness of this cylindrical projection 7 being greater than the wall thickness of the round blank.
- the direction of advance of the thickening rollers 12 and 14 is illustrated by the arrows F 2 in FIG. 4.
- 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 being caused during its manufacture, while at the same time giving the possibility of designing the wall thickness of the hub as desired.
- the cylindrical projection 7 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 open the end wall of the cylindrical projection 7 through holes or the like, so that then the final hub has the bead that adds strength.
- the flanges 16 and 17 can then be machined for the design of the gear part.
- 21 denotes a sheet metal plate 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 with a push-button is designated, 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 cooperating with the tool 23 is designated, which, after a pressure roller 26 has bent the outer edge area 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, the material pressed by the pressure roller 26 in the space that exists around the tool pin 24 and - as FIG. 8 clearly shows - bears against the stop 34, so that a cylindrical projection 28 is thereby created, which in the pulley intermediate product forms the actual hub 27 according to FIG. 9 forms.
- 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 the cylindrical projection 28 again has a substantially greater material thickness than the middle edge area of the sheet metal plate 21.
- this wall thickness of the cylindrical projection 28 can be determined.
- the trailing roller 35 shown in FIGS. 7 and 8 prevents the material of the sheet metal plate 21 from bending up during the pressing process.
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
Description
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.
Als Zahnkränze ausgebildete oder als Riemenscheiben, insbesondere Poly-V-Riemenscheiben, ausgebildete Getriebeteile sind in großem Umfang im Kraftfahrzeugbau im Einsatz und werden heute ausgehend von einer Ronde vielfach durch Drückverfahren hergestellt. Das Ausbilden der Verzahnungen und/oder der Rillen ist dabei ebenfalls im Drückverfahren möglich, während der Einbau der erforderlichen Nabe Schwierigkeiten bereitet. Die eigentliche Nabe ist dabei im Bereich der Drehachse ein hülsenförmiges Teil der rotierenden Scheibe, der die Verbindung zu der durchgeschobenen Welle, Achse oder einem Zapfen herstellt.Gear parts designed as sprockets or as pulleys, in particular poly-V pulleys, are widely used in motor vehicle construction and are today often produced from a round blank by pressing processes. The formation of the teeth and / or the grooves is also possible in the spinning process, while the installation of the required hub is difficult. The actual hub in the area of the axis of rotation is a sleeve-shaped part of the rotating disk, which establishes the connection to the shaft, axis or a pin pushed through.
Ein solches Bauteil wird beispielsweise in der US-PS 26 96 740 dargestellt und beschrieben.Such a component is shown and described, for example, in US Pat. No. 2,696,740.
Das Herstellen der Nabe eines Getriebeteiles erfolgt dabei im Stand der Technik dadurch, daß ein vorgefertigtes zylindrisches Hülsenteil mit dem Getriebeteil verbunden wird, wobei als Verbindung üblicherweise vier Verfahren eingesetzt werden, nämlich einmal ein Verlöten der beiden Bauteile, ein Verschweißen der beiden Bauteile, die Verbindung der beiden Bauteile durch Reibschweißen und schließlich ist es möglich, das Getriebeteil auch durch ein Schmiedeverfahren herzustellen.The manufacture of the hub of a gear part takes place in the prior art in that a prefabricated cylindrical sleeve part is connected to the gear part, usually four methods being used as the connection, namely once soldering 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.
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 Bearbeiten der Schweißnaht erforderlich ist. Der Kostenaufwand zur Herstellung der Nabe als Drehteil ist relativ hoch.The first three methods mentioned have the disadvantage that the absolutely necessary heat treatment adversely affects the actual gear part, whereby - if welding takes place - a subsequent machining of the weld seam is necessary. The cost of manufacturing the hub as a turned part is relatively high.
Der durch die Wärmebehandlung bedingte Verzug des Getriebeteiles muß anschließend wieder durch bestimmte Bearbeitungsverfahren entfernt werden.The distortion of the gear part caused by the heat treatment must then be removed again by certain machining processes.
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.
Der Einsatz geschmiedeter Getriebeteile ist kostenaufwendig und außerdem tritt eine unerwünschte Metallverhärtung auf, d. h. das Gefüge wird verändert, so daß das nachträgliche Aufbringen der Profilierungen des Getriebeteiles, sei es als Zahnkranz, sei es als Rillen für Riemenscheiben, außerordentlich schwierig wird. Schließlich verzundert die Oberfläche dieses Getriebeteiles, was zusätzliche Bearbeitungsschritte notwendig macht.The use of forged gear parts is expensive and, in addition, undesirable metal hardening occurs, ie the structure is changed, so that the subsequent application of the profiles of the gear part, be it as a toothed ring 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 bisherige Aufwand, um eine Nabe an einem relativ kleinen Getriebeteil festzulegen, sehr aufwendig ist, daß der Ausschußanteil bei der Fertigung hoch ist und unerwünschte Materialbeeinflussungen auftreten, die die Lebensdauer des Getriebeteiles beeinträchtigen können.In summary, it can be said that the previous effort to fix a hub to a relatively small gear part is very complex, that the reject rate during production is high and undesirable material influences occur which can affect the service life of the gear part.
Aus der Literaturstelle "Blech, Rohre, Profile 1980", Seite 660 ist es bekannt, Außenlamellenträger als Blechformteil herzustellen, wobei diese Außenlamellenträger in zwei Preßdurchgängen gefertigt werden. Insgesamt sind zur Herstellung eines solchen Außenlamellenträgers 27 Bearbeitungsstufen erforderlich. Sie umfassen 10 Zieh-, 7 Kalibrier-, 2 Abstreckgleitzieh- und 7 Schneidvorgänge sowie 1 Stauchvorgang. Durch die Zieharbeiten wird das Gefüge auseinandergerissen, d. h. das Materialgefüge ermüdet. Außerdem sind Ziehvorgänge üblicherweise mit Ungenauigkeiten verbunden, die sich bei einem Getriebeteil nachteilig auswirken können.From the literature "sheet metal, tubes, profiles 1980", page 660, it is known to produce outer plate carriers as a sheet metal part, these outer plate carriers being manufactured in two press passes. A total of 27 processing stages are required to produce such an outer disk carrier. They include 10 pulling, 7 calibration, 2 ironing and pulling operations, 7 cutting operations and 1 upsetting operation. The structure is torn apart by the drawing work, i. H. the material structure is tired. In addition, drawing operations are usually associated with inaccuracies that can have a negative impact on a transmission part.
Der Erfindung liegt die Aufgabe zugrunde, das gattungsgemäße Verfahren zu vereinfachen und in einem Arbeitsgang durchzuführen, ohne daß eine unerwünschte Beeinflussung des Materialgefüges des Getriebeteiles eintritt.The object of the invention is to simplify the generic method and to carry it out in one operation, without the material structure of the transmission part being adversely affected.
Diese der Erfindung zugrundeliegende Aufgabe wird durch die Lehre des Hauptanspruches gelöst.This object on which the invention is based is achieved by the teaching of the main claim.
Eine Vorrichtung zur Durchführung dieses Verfahrens ist in dem Unteranspruch erläutert.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
Mit anderen Worten ausgedrückt wird im Gegensatz zum Stand der Technik - außer den bereits erwähnten Schmiedeverfahren und Ziehverfahren zur Herstellung des Getriebeteiles - ein einteiliges Getriebeteil erzielt, bei welchem durch entsprechende Drückmaßnahmen aus der um eine axiale Welle umlaufenden Ronde das Getriebeteil bei gleichzeitiger Herstellung der Nabe erzielt wird.In other words, in contrast to the prior art - in addition to the forging and drawing processes for producing the gear part already mentioned - a one-part gear part is achieved, in which the gear part is achieved by appropriate pressing measures from the round disk rotating around an axial shaft while the hub is being produced becomes.
Hierbei ist nicht nur erreichbar, daß in einem Arbeitsgang die Nabe des Getriebeteiles hergestellt wird, sondern es ist gleichzeitig möglich, daß gegenüber der Wanddicke der Blechplatine des Getriebeteiles 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 operation, 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 here the required strength for transmitting the torque is achieved.
Ausgehend von einer Ronde wird auf einer Drückmaschine die Nabe an das Riemenscheibenzwischenprodukt in einer Aufspannung angeformt. Es besteht bei Anwendung des Verfahrens die Möglichkeit, Riemenscheibenzwischenprodukte für alle bekannten Herstellungsmethoden von Riemenscheiben herzustellen, da die Dicken im Konturbereich und im Profilbereich der Riemenscheibenzwischenprodukte durch das angewandte Drückverfahren festgelegt werden.Starting from a circular blank, the hub is molded onto the intermediate pulley product in one setting on a spinning machine. When using the method, there is the possibility of producing intermediate pulley products for all known manufacturing methods of pulley systems, since the thicknesses in the contour area and in the profile area of the intermediate pulley products are determined by the applied pressing method.
Ausführungsbeispiele für die erfindungsgemäßen Verfahren werden nachfolgend anhand der Zeichnungen erläutert. Die Zeichnungen zeigen dabei in
- Fig. 1
- eine aufgespannte Haube in einer Drückvorrichtung, in
- Fig. 2
- die Verformung der Haube durch Drückrollen, in
- Fig. 3
- die Formung des extra zylindrischen Nabenteils durch Formrollen, in
- Fig. 4
- das Endverformungsstadium durch Einsatz von Verdickungsrollen zur Erzielung des zylindrischen Nabenteils, in
- Fig. 5
- eine in eine Drückvorrichtung eingesetzte Blechplatine, in
- Fig. 6
- die Verformung der Blechplatine zur Festlegung derselben an dem Werkzeug, in
- Fig. 7
- eine Stufe des Drückverfahrens, bei welchem die Wandstärke des Getriebeteiles verringert und dadurch gleichzeitig die Anformung der Nabe erreicht wird, in
- Fig. 8
- das Endstadium des Drückverfahrens bei angeformter Nabe und in
- Fig. 9
- in einer Prinzipskizze mögliche Varianten von Riemenscheibenzwischenprodukten mit unterschiedlichen Dicken und Nabenlagen.
- Fig. 1
- a clamped hood in a pushing device, in
- Fig. 2
- the deformation of the hood by pressure rollers, in
- Fig. 3
- the shaping of the extra cylindrical hub part by shaping rolls, in
- Fig. 4
- the final deformation stage by using thickening rollers to achieve the cylindrical hub part, in
- Fig. 5
- a sheet metal plate inserted into a pressing device, in
- Fig. 6
- the deformation of the sheet metal plate to fix it to the tool, in
- Fig. 7
- a stage of the spinning process, in which the wall thickness of the gear part is reduced and at the same time the shaping of the hub is achieved, in
- Fig. 8
- the final stage of the pressing process with molded hub and in
- Fig. 9
- In a schematic diagram, possible variants of intermediate pulley products with different thicknesses 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. Das Werkzeug 3 weist einen in axialer Richtung zentrisch 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
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
Der in Fig. 1 eingezeichnete Doppelpfeil F1 verdeutlicht die Bewegungsrichtung von Hauptspindel 4 und Vorsetzer 8 zur Festlegung der Haube 2.The drawn in FIG. 1 double arrow F 1 illustrates the direction of movement of the
Fig. 2 zeigt, daß durch den Angriff von Drückrollen 9 und 10 die Haube 2 in Richtung auf den zylindrischen Werkzeugstift 5 hin verformt wird, wobei dann durch Einsatz einer in Fig. 3 dargestellten Formrolle 11 die Verformung so weit fortgeführt wird, bis die Haube sich um den Werkzeugstift 5 herumgelegt 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 attack of spinning
Wird nunmehr - wie dies die Fig. 4 zeigt - dieser wellenförmige Bereich um den Werkzeugstift 5 herum durch Verdickungsrollen 12 und 14 zusammengedrückt, erfolgt eine zylindrische Ausbildung des dann als Nabe dienenden Teiles der Haube 2, wobei die Wanddicke dieses zylindrischen Vorsprunges 7 größer sein kann als die Wanddicke der Ronde.If, as shown in FIG. 4, this undulating region around the
Natürlich ist es in diesem Verfahrensbereich möglich, durch Zurückziehen des Vorsetzers 8 ein Ausfließen des Materials zum freien Ende des Werkzeugstiftes 5 hin zu erreichen, so daß es auch möglich ist, die Wanddicke des zylindrischen Vorsprunges 7 geringer zu gestalten als die Wanddicke der Ronde 6.Of course it is possible in this process area to pull out the
Die Zustellrichtung der Verdickungsrollen 12 und 14 wird durch die Pfeile F2 in Fig. 4 verdeutlicht.The direction of advance of the thickening
Zusammenfassend ist festzustellen, daß durch den erfindungsgemäßen Vorschlag ein kostengünstiges Herstellungsverfahren für mit einer Nabe ausgerüstete Getriebeteile geschaffen wird, wobei keine Gefügeveränderungen innerhalb des Getriebeteiles bei seiner Herstellung bedingt werden, gleichzeitig die Möglichkeit gegeben wird, die Wanddicke der Nabe beliebig zu gestalten.In summary, 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 being caused during its manufacture, while at the same time giving the possibility of designing the wall thickness of the hub as desired.
Ausgehend von Fig. 4 der vorstehenden Erläuterungen ist es nunmehr notwendig, den zylindrischen Vorsprung 7 zu öffnen, damit dieser eine Welle oder einen Zapfen aufnehmen kann. Die Öffnung des zylindrischen Vorsprunges 7 kann entweder dadurch erfolgen, daß der in Fig. 4 ersichtliche Wulst des 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 aufweist, der zur Festigkeit beiträgt. Anschließend an dieses Herstellungsverfahren kann dann die Bearbeitung der Flansche 16 und 17 für die Gestaltung des Getriebeteiles erfolgen.Starting from Fig. 4 of the above explanations, it is now necessary to open the
In den Fig. 5 bis 8 ist mit 21 eine Blechplatine 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 Blechplatine zentrisch vorgesehenen Loches aufgesetzt werden kann. Mit 25 ist ein Vorsetzer bezeichnet, der hin und her beweglich ist und in seiner Arbeitslage 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 which is connected to a
Mit 29 ist ein mit dem Werkzeug 23 zusammenarbeitendes Spannfutter bezeichnet, das, nachdem eine Drückrolle 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 cooperating with the
Die Drückrolle 21 kann im Sinne des in Fig. 6 eingezeichneten Pfeiles auf den Werkzeugstift 24 zu bewegt 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 Anschlag 34 anlegt, so daß dadurch ein zylindrischer Vorsprung 28 geschaffen wird, der in dem Riemenscheibenzwischenprodukt die eigentliche Nabe 27 gemäß Fig. 9 bildet.The
Aus der Zeichnung, insbesondere im Vergleich zu Fig. 6 und 8, ist erkennbar, daß der durch das Spannfutter 29 festgelegte Randbereich der Blechplatine 21 dicker als der mittlere Randbereich der Blechplatine 21 ist und daß wiederum der zylindrische Vorsprung 28 eine wesentlich größere Materialdicke aufweist als der mittlere Randbereich der Blechplatine 21. In Abhängigkeit der Größe des Raumes zwischen dem Anschlag 34 des Vorsetzers 25 und der Außenseite des Werkzeuges 23 kann diese Wandstärke des zylindrischen Vorsprunges 28 bestimmt werden.From the drawing, in particular in comparison with FIGS. 6 and 8, it can be seen that the edge area of the
Die in Fig. 7 und 8 eingezeichnete Nachlaufrolle 35 verhindert ein Hochbiegen des Materials der Blechplatine 21 während des Drückverfahrens.The trailing
In Fig. 9 sind unter den Positionen A bis F mögliche Varianten von Riemenscheibenzwischenprodukten mit unterschiedlichen Dicken und Nabenlagen dargestellt. Falls die Riemenscheibe - wie unter E und F dargestellt - einen Konturbereich K und ggf. eine Lochung 11 aufweisen soll, so kann dieser Konturbereich ggf. mit der Lochung auf einer Presse aus dem von der Drückmaschine hergestellten Riemenscheibenzwischenprodukt leicht hergestellt werden. Es besteht ferner die Möglichkeit, einfache Konturbereiche direkt auf der Drückmaschine durch zusätzliche Werkzeugträger zu erzeugen.9 shows possible variants of intermediate pulley products with different thicknesses and hub positions under positions A to F. If the pulley - as shown under E and F - is to have a contour area K and possibly a
Zusammenfassend kann also festgestellt werden, daß gegenüber dem bisher bekannten Herstellungsverfahren die erfindungsgemäßen Drückverfahren folgende Vorteile aufweisen:
- 1. Geringerer Maschineneinsatz,
- 2. das Materialgefüge des Riemenscheibenzwischenproduktes unterliegt keinen negativen Einflüssen, wie z. B. beim Schweißen und Schmieden,
- 3. der Nabeninnendurchmesser kann durch das Drückverfahren ohne nachträgliches Rollieren hergestellt werden,
- 4. es bestehen keine Nachteile beim Profilieren der Riemenscheibe durch vorherige Arbeitsgänge,
- 5. es besteht die Möglichkeit, Nuten oder Verzahnungen am Nabeninnendurchmesser durch das Drückverfahren ohne Nachbearbeitung herzustellen, wie dies beispielsweise aus der Darstellung F in Fig. 9 ersichtlich ist, in der beim
Drückverfahren die Abziehnut 32 hergestellt werden kann.
- 1. Less machine use,
- 2. The material structure of the intermediate pulley is not subject to any negative influences, such as. B. in welding and forging,
- 3. the inner hub diameter can be produced by the spinning process without subsequent rolling,
- 4. there are no disadvantages when profiling the pulley from previous operations,
- 5. There is the possibility of producing grooves or toothings on the inside diameter of the hub by means of the pressing process without post-processing, as can be seen, for example, from the illustration F in FIG. 9, in which the pulling
groove 32 can be produced in the pressing process.
Claims (8)
- A method for the non-cutting production of the hub of a hubbed transmission component from a sheet metal blank, the sheet metal blank being formed into a cap,
characterised in that the cap (2) held in the edge area is shaped by pressing it around a central tool pin (5) to produce a cylindrical projection (7) projecting from a round plate (6) and in that the cylindrical projection (7) is then opened to accommodate a coaxial shaft. - A device for the non-cutting production of the hub of a hubbed transmission component from a sheet metal blank, the sheet metal blank being formed into a cap, said device comprising a tool (3) carried by a main spindle (4) and having a tool pin (5) and a chuck (15), and a front retainer (8) which is arranged opposite the tool pin (5) and which, together with the tool pin (5) and the chuck (15), secures a cap (2), said device also comprising pressure rollers (9, 10), forming rollers (11) and thickening rollers (12, 14) acting in succession on said cap (2).
- A method for the non-cutting production of the hub of a hubbed transmission component from a sheet metal blank, characterised in that the sheet metal blank (21) held in the edge area, carried by a tool (23) on a main spindle (22) and rotating relative to one or more pressure rollers (26), is reduced in thickness by pressing by means of the pressure roller (26) and the material thus obtained is shaped around a tool pin (24) passing centrally through the sheet metal blank (21) to produce a cylindrical projection (28) projecting from the sheet metal blank (21).
- A method according to claim 3, characterised in that the tool pin (24) is arranged on the front retainer (25).
- A method according to claim 3, characterised in that the tool pin (24) is arranged on the tool (23).
- A method according to claim 3, characterised in that the edge area of the sheet metal blank (21) is secured before the thickness-reducing pressing process is carried out.
- A device for the non-cutting production of the hub of a hubbed transmission component from a sheet metal blank, comprising a tool (23) carried by a main spindle (22) and having a centrally disposed tool pin (24) and a chuck (29) acting on the edge area of the sheet metal blank (21), a front retainer (25) arranged opposite the tool pin (24), the outer circumference of which front retainer (25) is greater than the outer circumference of the tool pin (24) and whose side facing the sheet metal blank (21) ends at a distance from the sheet metal blank (21) and in this way forms a space with a limit stop (34), and at least one pressure roller (26) movable in parallel with the plane of the sheet metal blank (21) towards the centre of said sheet metal blank (21).
- A device according to claim 7, characterised by a follower roller (35), which comes into action at the same time as the pressure roller (26).
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4342086 | 1993-12-09 | ||
| DE4342086 | 1993-12-09 | ||
| DE4400257 | 1994-01-07 | ||
| 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 |
| 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 EP0725693A1 (en) | 1996-08-14 |
| EP0725693B1 true EP0725693B1 (en) | 1997-07-30 |
Family
ID=25931922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94909865A Expired - Lifetime EP0725693B1 (en) | 1993-12-09 | 1994-02-23 | Method for the non-cutting production of a transmission component hub |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5619879A (en) |
| EP (1) | EP0725693B1 (en) |
| JP (1) | JP3053219B2 (en) |
| CA (1) | CA2161020C (en) |
| ES (1) | ES2107817T3 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19916280A1 (en) * | 1999-02-16 | 2000-08-24 | Wf Maschinenbau Blechformtech | Non-swarf-producing device for making hub, forming projecting nose and recess of appropriate height and depth |
| DE19849981C5 (en) * | 1998-10-29 | 2006-04-20 | Leifeld Metal Spinning Gmbh | Method for forming a disc-shaped part with hub and spinning roller for the process |
| WO2008141896A2 (en) * | 2007-05-23 | 2008-11-27 | Wf-Maschinenbau U. Blechformtechnik Gmbh & Co. Kg | Method for the production of a hub in a pressing process by means of at least one rotatable pressing roll |
| WO2018037070A1 (en) | 2016-08-25 | 2018-03-01 | Winkelmann Powertrain Components Gmbh & Co. Kg | Method for the chipless production of a rotationally symmetrical body from a circular sheet metal blank |
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| US5737836A (en) * | 1996-05-03 | 1998-04-14 | Borg-Warner Automotive, Inc. | Method of making a splined turbine hub |
| US5951422A (en) * | 1996-06-24 | 1999-09-14 | The Gates Corporation | Hub and pulley with radially inward annular collar |
| JP3325184B2 (en) * | 1996-07-01 | 2002-09-17 | 三菱電機株式会社 | Manufacturing apparatus and manufacturing method for yoke of planetary reduction starter |
| US5947853A (en) * | 1996-08-15 | 1999-09-07 | The Gates Corporation | Spun pulley with thick hub |
| DE19706466C2 (en) * | 1997-02-19 | 1999-12-02 | Wf Maschinenbau Blechformtech | Process for the non-cutting production of a gear part having a hub |
| IT1294282B1 (en) * | 1997-07-28 | 1999-03-24 | Ducati Energia Spa | PROCESS FOR FORMING ROTORS FOR MAGNETO GENERATORS, AND ROTOR SO FORMED |
| JP2001009546A (en) * | 1999-06-30 | 2001-01-16 | Kubota Tekkosho:Kk | Manufacture of hollow shaft having a flange at one end |
| JP3738218B2 (en) * | 1999-07-28 | 2006-01-25 | 株式会社カネミツ | Sheet metal member and manufacturing method thereof |
| US6348020B2 (en) * | 1999-10-19 | 2002-02-19 | The Gates Corporation | Internal spun hub and method of making same |
| DE10033089A1 (en) * | 2000-02-15 | 2001-08-23 | Wf Maschinenbau Blechformtech | Process for the non-cutting production of a component with a hub |
| JP3812329B2 (en) | 2000-03-14 | 2006-08-23 | 日産自動車株式会社 | Plastic working method |
| US6293885B1 (en) * | 2000-03-14 | 2001-09-25 | The Gates Corporation | Idler pulley |
| US6598443B2 (en) | 2000-04-26 | 2003-07-29 | A. J. Rose Manufacturing Co. | Blind bore hub and method of forming |
| US6427329B2 (en) | 2000-04-26 | 2002-08-06 | A. J. Rose Manufacturing Co. | Method of forming a hub with blind bore |
| US6731043B2 (en) * | 2001-10-22 | 2004-05-04 | A. J. Rose Manufacturing Co. | One-piece field core shell |
| US7797976B2 (en) | 2003-11-17 | 2010-09-21 | Wf-Maschinenbau Und Blechformtechnik Gmbh & Co. Kg | Method for the production of a flange on a metal blank, and transmission part |
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| JP4677414B2 (en) * | 2004-12-10 | 2011-04-27 | 株式会社カネミツ | Manufacturing method of sheet metal back pulley |
| CN100333849C (en) * | 2005-11-04 | 2007-08-29 | 刘宪福 | Machine of turning rim for shaped cap seal head |
| US8561283B1 (en) | 2007-10-29 | 2013-10-22 | Prestolite Performance, Llc | Method to provide a universal bellhousing between an engine and transmission of a vehicle |
| US20120186936A1 (en) | 2011-01-26 | 2012-07-26 | Prestolite Performance Llc. | Clutch assembly cover, method of making same, and optional heat management |
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| CN102728688A (en) * | 2011-04-01 | 2012-10-17 | 北京超代成科技有限公司 | Non-cutting processing method and device for unilateral press forming of bottom surface of metal sheet |
| CN102151737A (en) * | 2011-04-25 | 2011-08-17 | 董利强 | Pulley blank spinning process |
| EP2653244B1 (en) * | 2012-04-20 | 2014-12-17 | Leifeld Metal Spinning AG | Device and method for forming a workpiece |
| CN103962432A (en) * | 2013-09-27 | 2014-08-06 | 东风襄阳旋压技术有限公司 | Rotary pushing and deep drawing spinning tool for deep bosses |
| FR3034152B1 (en) * | 2015-03-24 | 2018-07-20 | Aktiebolaget Skf | BEARING COMPRISING AN OVERMOLDED WEAR, AND METHOD OF MANUFACTURING THE SAME |
| US10502306B1 (en) | 2016-04-25 | 2019-12-10 | Accel Performance Group Llc | Bellhousing alignment device and method |
| JP2019171414A (en) * | 2018-03-28 | 2019-10-10 | アイシン・エィ・ダブリュ株式会社 | Boss part molding method |
| DE102018208820A1 (en) * | 2018-06-05 | 2019-12-05 | BSH Hausgeräte GmbH | Electric propulsion engine, wet runner pump and home appliance |
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| DE514584C (en) * | 1930-12-15 | Wilhelm Schroer | Process for the production of seamless cylindrical hollow bodies | |
| US1108260A (en) * | 1910-04-05 | 1914-08-25 | Edwin E Slick | Method of and apparatus for forging car-wheels. |
| US1500261A (en) * | 1921-04-18 | 1924-07-08 | Montour Aluminum Soldering Cor | Sheet-metal-spinning machine |
| US2624303A (en) * | 1948-07-06 | 1953-01-06 | United Aircraft Prod | Machine for metalworking |
| US2696740A (en) * | 1950-02-18 | 1954-12-14 | Lester T Zatko | Hubbed sheet metal pulley |
| US3120206A (en) * | 1959-03-09 | 1964-02-04 | Lodge & Shipley Co | Metal working |
| US4056291A (en) * | 1975-08-04 | 1977-11-01 | Aspro, Inc. | Clutch housing and bearing assembly and method of making the same |
| US4996859A (en) * | 1989-10-23 | 1991-03-05 | A. J. Rose Manufacturing Company | Method and apparatus for roll forming metal |
-
1994
- 1994-02-23 US US08/571,937 patent/US5619879A/en not_active Expired - Lifetime
- 1994-02-23 JP JP6519448A patent/JP3053219B2/en not_active Expired - Fee Related
- 1994-02-23 EP EP94909865A patent/EP0725693B1/en not_active Expired - Lifetime
- 1994-02-23 ES ES94909865T patent/ES2107817T3/en not_active Expired - Lifetime
- 1994-02-23 CA CA002161020A patent/CA2161020C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19849981C5 (en) * | 1998-10-29 | 2006-04-20 | Leifeld Metal Spinning Gmbh | Method for forming a disc-shaped part with hub and spinning roller for the process |
| DE19916280A1 (en) * | 1999-02-16 | 2000-08-24 | Wf Maschinenbau Blechformtech | Non-swarf-producing device for making hub, forming projecting nose and recess of appropriate height and depth |
| WO2008141896A2 (en) * | 2007-05-23 | 2008-11-27 | Wf-Maschinenbau U. Blechformtechnik Gmbh & Co. Kg | Method for the production of a hub in a pressing process by means of at least one rotatable pressing roll |
| DE102007023972A1 (en) | 2007-05-23 | 2008-11-27 | Wf-Maschinenbau Und Blechformtechnik Gmbh & Co Kg | Method for producing a hub in the pressing method by means of at least one rotatable spinning roller |
| WO2008141896A3 (en) * | 2007-05-23 | 2009-01-22 | Wf Maschb U Blechformtechnik G | Method for the production of a hub in a pressing process by means of at least one rotatable pressing roll |
| WO2018037070A1 (en) | 2016-08-25 | 2018-03-01 | Winkelmann Powertrain Components Gmbh & Co. Kg | Method for the chipless production of a rotationally symmetrical body from a circular sheet metal blank |
| DE102016115791A1 (en) | 2016-08-25 | 2018-03-01 | WF-Maschinenbau- und Blechformtechnik GmbH & Co. Kommanditgesellschaft | Method for chipless production of a rotationally symmetrical body from a sheet metal blank |
| US11325174B2 (en) | 2016-08-25 | 2022-05-10 | Winkelmann Powertrain Components Gmbh & Co. Kg | Method for the chipless production of a rotationally symmetrical body from a circular sheet metal blank |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2107817T3 (en) | 1997-12-01 |
| JP3053219B2 (en) | 2000-06-19 |
| CA2161020A1 (en) | 1994-09-15 |
| US5619879A (en) | 1997-04-15 |
| CA2161020C (en) | 2000-10-31 |
| JPH09506295A (en) | 1997-06-24 |
| EP0725693A1 (en) | 1996-08-14 |
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