EP0343314B1 - Method of making a pulley - Google Patents

Method of making a pulley Download PDF

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Publication number
EP0343314B1
EP0343314B1 EP19890100057 EP89100057A EP0343314B1 EP 0343314 B1 EP0343314 B1 EP 0343314B1 EP 19890100057 EP19890100057 EP 19890100057 EP 89100057 A EP89100057 A EP 89100057A EP 0343314 B1 EP0343314 B1 EP 0343314B1
Authority
EP
European Patent Office
Prior art keywords
bearing surface
hub
ronde
metal
pulley
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
Application number
EP19890100057
Other languages
German (de)
French (fr)
Other versions
EP0343314A2 (en
EP0343314A3 (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.)
Winkelmann and Pannhoff GmbH
Original Assignee
Winkelmann and Pannhoff GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25868515&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0343314(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE3819957A external-priority patent/DE3819957C2/en
Application filed by Winkelmann and Pannhoff GmbH filed Critical Winkelmann and Pannhoff GmbH
Publication of EP0343314A2 publication Critical patent/EP0343314A2/en
Publication of EP0343314A3 publication Critical patent/EP0343314A3/en
Application granted granted Critical
Publication of EP0343314B1 publication Critical patent/EP0343314B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00Making other particular articles
    • B21D53/26Making other particular articles wheels or the like
    • B21D53/261Making other particular articles wheels or the like pulleys

Definitions

  • the invention relates to a method according to the preamble of the main claim.
  • This known method therefore essentially requires five successive, absolutely essential, essential processing steps, the forces to be used for the "collapse" being considerable, so that large mechanical expenditure is required to absorb these high pressures.
  • the invention has for its object to simplify the generic method in such a way that, despite less mechanical effort, the cylindrical peripheral surface formed, which is also referred to as the contact surface, has a greater wall thickness than the actual hub surface.
  • This object on which the invention is based is achieved in that the metal blank is flanged in a first process step in a departure from the previous method of operation and then the flanging is flattened to form the contact surface.
  • This mode of operation eliminates the processing of the formed that was previously required in the prior art Edge avoided and instead of the deep-drawing press producing a pot-like body, a simple border roller is used.
  • a metal blank 1 is shown, which is clamped between two chuck jaws 4 and 5 according to FIG. 1.
  • a squeeze roller 7 is shown and when the squeeze roller 7 is fed onto the border 2, the end product shown in FIG. 4 is reached, namely a support surface 3 which has a greater thickness than the hub surface 8 of the metal blank 1.
  • Grooves running in the circumferential direction can be incorporated into the bearing surface thus formed, so that, for example, a poly-V pulley is formed or it is also possible to apply transverse toothings so that a cross-toothed pulley can be created.
  • the round blank can have a thickness of 1.6 mm, it being possible to bring the contact surface 3 to a thickness of 3.2 mm by using the new method. It is known that a wall thickness increase of about 20 can be achieved even when boarding.

Description

Die Erfindung bezieht sich auf ein Verfahren gemäß dem Oberbegriff des Hauptanspruches.The invention relates to a method according to the preamble of the main claim.

Ein gattungsbildendes Verfahren ist beispielsweise in der US-PS 42 73 547 beschrieben. Bei diesem bekannten Verfahren zur Herstellung von Riemenscheiben oder Poly-V-Scheiben wird so vorgegangen, daß eine Metallronde in einem ersten Verfahrensschritt tiefgepreßt wird, so daß ein topfartiges Preßteil erzielt wird. Dieses in einem ersten Verfahrensschritt erzielte topfartige Preßteil weist im Bereich der Nabenfläche und im Bereich der sich koaxial, d.h. im wesentlichen senkrecht zur Nabenfläche erstreckenden zylindrischen Fläche die gleiche Wandstärke auf. Dieser erste Verfahrensschritt ist in den Fig. 1 und 2 der US-PS 42 73 547 dargestellt.A generic method is described for example in US Pat. No. 4,273,547. In this known process for the production of pulleys or poly-V pulleys, the procedure is such that a metal blank is deep-pressed in a first process step, so that a pot-like pressed part is obtained. This pot-like pressed part obtained in a first method step has in the area of the hub surface and in the area of the coaxial, i.e. the cylindrical surface extending substantially perpendicular to the hub surface has the same wall thickness. This first process step is shown in FIGS. 1 and 2 of US Pat. No. 4,273,547.

Anschließend ist es - was in der US-PS 42 73 547 nicht dargestellt ist - erforderlich, den Randbereich der gebildeten zylindrischen Fläche fein zu bearbeiten.Then it is - which is not shown in US-PS 42 73 547 - required to finely edit the edge region of the cylindrical surface formed.

Als nächster Verfahrensschritt schließt sich ein sogenanntes "Kollapsen" der zylindrischen Randfläche an, das in den Fig. 6a und 6b der US-PS 42 73 547 dargestellt ist. Durch dieses "Kollapsen" wird die zylindrische Randfläche durch Verformung in ihrer Höhe reduziert, wobei gleichzeitig der Randbereich zwischen der Nabenfläche und der zylindrischen Fläche eingefaltet wird.The next process step is followed by a so-called "collapse" of the cylindrical edge surface, which is shown in FIGS. 6a and 6b of US Pat. No. 4,273,547. This "collapse" reduces the height of the cylindrical edge surface by deformation, at the same time the edge region between the hub surface and the cylindrical surface is folded in.

Der so gekollapste Randbereich wird dann über eine Zudrückrolle umgeformt und zusammengedrückt, wie dies in den Fig. 8b und 9 der US-PS 42 73 547 dargestellt ist.The edge region collapsed in this way is then deformed and compressed by means of a pressure roller, as is shown in FIGS. 8b and 9 of US Pat. No. 4,273,547.

Dieses bekannte Verfahren benötigt also im wesentlichen fünf aufeinanderfolgende, unbedingt erforderliche wesentliche Bearbeitungsschritte, wobei die für das "Kollapsen" aufzuwendenden Kräfte erheblich sind, so daß, um diese hohen Drücke aufzunehmen, große maschinelle Aufwendungen erforderlich sind.This known method therefore essentially requires five successive, absolutely essential, essential processing steps, the forces to be used for the "collapse" being considerable, so that large mechanical expenditure is required to absorb these high pressures.

Der Erfindung liegt die Aufgabe zugrunde, das gattungsbildende Verfahren so zu vereinfachen, daß trotz geringerem maschinellem Aufwand erreicht wird, daß die gebildete zylindrische Umfangsfläche, die auch als Auflagefläche bezeichnet wird, eine größere Wandstärke als die eigentliche Nabenfläche aufweist.The invention has for its object to simplify the generic method in such a way that, despite less mechanical effort, the cylindrical peripheral surface formed, which is also referred to as the contact surface, has a greater wall thickness than the actual hub surface.

Diese der Erfindung zugrundeliegende Aufgabe wird dadurch gelöst, daß die Metallronde in Abkehr von der bisherigen Arbeitsweise in einem ersten Verfahrensschritt bordiert wird und dann die Bordierung zur Bildung der Auflagefläche flachgedrückt wird. Durch diese Arbeitsweise wird das bisher im Stand der Technik erforderliche Bearbeiten des gebildeten Randes vermieden und anstelle der einen topfartigen Körper erzeugenden Tiefziehpresse wird eine einfache Bordierrolle eingesetzt.This object on which the invention is based is achieved in that the metal blank is flanged in a first process step in a departure from the previous method of operation and then the flanging is flattened to form the contact surface. This mode of operation eliminates the processing of the formed that was previously required in the prior art Edge avoided and instead of the deep-drawing press producing a pot-like body, a simple border roller is used.

Anstelle des "Kollapsens" im Stand der Technik wird nunmehr ein einfaches Zudrücken der Bordierung erforderlich und mit diesen drei einfachen Verfahrensschritten wird eine Riemenscheibe geschaffen, die der Anforderung entspricht, daß die eigentliche Nabenfläche dünner als die eigentliche Auflagefläche ausgebildet ist, wobei gleichzeitig die Durchführung dieses Verfahrens kostengünstig realisiert werden kann.Instead of "collapsing" in the prior art, a simple pressing of the border is now necessary and with these three simple method steps a pulley is created which meets the requirement that the actual hub surface is made thinner than the actual bearing surface, while simultaneously carrying out this Process can be realized inexpensively.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung erläutert. Die Zeichnung zeigt dabei in

Fig. 1
die in ein Futter eingespannte Ronde mit noch nicht tätiggewordener Bordierrolle, in
Fig. 2
die Bordierrolle einschließlich der erzielten Bordierung, in
Fig. 3
die erzielte Bordierung bei noch nicht tätiggewordener Zudrückrolle und in
Fig. 4
das erzielte Produkt, das als Endprodukt oder als Zwischenprodukt geeignet ist.
An embodiment of the invention is explained below with reference to the drawing. The drawing shows in
Fig. 1
the round blank clamped in a chuck with a yet not active border roll, in
Fig. 2
the boarding role including the boarding achieved, in
Fig. 3
the boarding achieved with the pinch roller not yet activated and in
Fig. 4
the product obtained, which is suitable as an end product or as an intermediate product.

In der Zeichnung ist eine Metallronde 1 gezeigt, die gemäß Fig. 1 zwischen zwei Futterbacken 4 und 5 eingespannt ist. Eine Bordierrolle 6, die bei ihrer Zuführung auf die Futterbacken 4 und 5, wie dies in Fig. 2 dargestellt ist, schafft eine Bordierung 2.In the drawing, a metal blank 1 is shown, which is clamped between two chuck jaws 4 and 5 according to FIG. 1. A bordering roller 6, which, when it is fed onto the chuck jaws 4 and 5, as shown in FIG. 2, creates a bordering 2.

In den Fig. 3 und 4 ist eine Zudrückrolle 7 gezeigt und bei Zuführen der Zudrückrolle 7 auf die Bordierung 2 wird das in Fig. 4 dargestellte Endprodukt erreicht, nämlich eine Auflagefläche 3, die eine größere Stärke als die Nabenfläche 8 der Metallronde 1 aufweist.3 and 4, a squeeze roller 7 is shown and when the squeeze roller 7 is fed onto the border 2, the end product shown in FIG. 4 is reached, namely a support surface 3 which has a greater thickness than the hub surface 8 of the metal blank 1.

In die so gebildete Auflagefläche können in Umfangsrichtung verlaufende Nuten eingearbeitet werden, so daß beispielsweise eine Poly-V-Scheibe gebildet wird oder es ist auch möglich, Querverzahnungen aufzubringen, so daß eine querverzahnte Riemenscheibe erstellt werden kann.Grooves running in the circumferential direction can be incorporated into the bearing surface thus formed, so that, for example, a poly-V pulley is formed or it is also possible to apply transverse toothings so that a cross-toothed pulley can be created.

Als Ausführungsbeispiel sei darauf hingewiesen, daß beispielsweise die Ronde eine Stärke von 1,6 mm aufweisen kann, wobei durch die Anwendung des neuen Verfahrens dann die Auflagefläche 3 auf eine Stärke von 3,2 mm gebracht werden kann. Hierbei ist es bekannt, daß bereits beim Bordieren eine Wandstärkenvergrößerung um etwa 20 erreichbar ist.As an exemplary embodiment, it should be pointed out that, for example, the round blank can have a thickness of 1.6 mm, it being possible to bring the contact surface 3 to a thickness of 3.2 mm by using the new method. It is known that a wall thickness increase of about 20 can be achieved even when boarding.

Claims (1)

  1. Method for manufacturing a pulley formed from a metal ronde (1) having a hub (8) and a coaxially extending cylindrical bearing surface (3), said bearing surface being essentially perpendicular to the hub portion and having a thickness greater than the thickness of the hub and may be provided with circumferentially extending grooves or with a transverse toothing,
    characterized in
    that said metal ronde (1) being pressed between wedge grips (4,5) is bordered in its peripheral portion by bordering roller means, i.e. said metal ronde is formed in a curved way essentially in the direction of the bearing surface to be formed and that then the so formed bordering (2) is pressed flat between the wedge grips (4,5) and press roller means (7) being adapted to the contour of said wedge grips for forming said thickened bearing surface (3).
EP19890100057 1988-05-27 1989-01-04 Method of making a pulley Expired - Lifetime EP0343314B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3818041 1988-05-27
DE3818041 1988-05-27
DE3819957A DE3819957C2 (en) 1988-05-27 1988-06-11 Process for manufacturing a pulley
DE3819957 1988-06-11

Publications (3)

Publication Number Publication Date
EP0343314A2 EP0343314A2 (en) 1989-11-29
EP0343314A3 EP0343314A3 (en) 1991-01-23
EP0343314B1 true EP0343314B1 (en) 1993-03-17

Family

ID=25868515

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890100057 Expired - Lifetime EP0343314B1 (en) 1988-05-27 1989-01-04 Method of making a pulley

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EP (1) EP0343314B1 (en)
ES (1) ES2038792T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19524089C1 (en) * 1995-07-01 1996-09-05 Wf Maschinenbau Blechformtech Method of mfg. gear part of thin metal disc
DE10156086B4 (en) * 2001-11-16 2006-09-14 Winkelmann Powertrain Components Gmbh & Co. Kg Method for producing a rotationally symmetrical component

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1242944B (en) * 1990-12-12 1994-05-18 Bompani Ivaldo Mta DISC-SHAPED CUTTING TOOL
US5152061A (en) * 1992-02-19 1992-10-06 Tesma International Inc. Cold-forming of toothed wheels from sheet steel
DE19620178C2 (en) * 1996-05-20 1999-03-25 Leifeld Gmbh & Co Method of making a poly-V disc
WO1998006521A1 (en) * 1996-08-14 1998-02-19 Wf-Maschinenbau Und Blechformtechnik Gmbh & Co. Kommanditgesellschaft Process and device for manufacturing a gear part with outer teeth
DE102010010269C5 (en) 2010-03-05 2023-11-16 Mercedes-Benz Group AG Method for producing a stator support
DE102012100985A1 (en) 2012-02-07 2013-08-08 WF Maschinenbau und Blechformtechnik GmbH & Co. KG Method for manufacturing gear components, involves clamping metal blank with non-circular outer contour in tool and displacing in rotation around rotational axis, and transforming outer periphery of metal blank into axial area by rollers
CN113770222B (en) * 2021-09-25 2024-03-08 潍坊斐越工贸有限公司 Forming method of hot spinning thrust wheel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1943224A (en) * 1932-07-18 1934-01-09 Kelsey Hayes Wheel Corp Method of forming brake drums
US4273547A (en) * 1975-11-04 1981-06-16 Drive Manufacturing Inc. Method of pulley manufacture and product
US4631946A (en) * 1984-03-02 1986-12-30 Kabushiki Kaisha Kanemitsu Method of manufacturing sheet metal made poly-V pulleys
DE3445942A1 (en) * 1984-12-17 1986-07-10 KLIFA - Fahrzeugteile GmbH & Co, 6800 Mannheim Method and apparatus for the production of a multi-groove driving pulley made of sheet metal
DE3736096C1 (en) * 1987-10-24 1988-09-15 Wf Maschinenbau Blechformtech Apparatus for the production of multi-groove V-belt pulleys

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19524089C1 (en) * 1995-07-01 1996-09-05 Wf Maschinenbau Blechformtech Method of mfg. gear part of thin metal disc
DE10156086B4 (en) * 2001-11-16 2006-09-14 Winkelmann Powertrain Components Gmbh & Co. Kg Method for producing a rotationally symmetrical component

Also Published As

Publication number Publication date
ES2038792T3 (en) 1993-08-01
EP0343314A2 (en) 1989-11-29
EP0343314A3 (en) 1991-01-23

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