EP0204032A2 - Pulley, especially a multiple V-pulley, and method of making rotation-symmetrical objects from a material deformable without chipping - Google Patents
Pulley, especially a multiple V-pulley, and method of making rotation-symmetrical objects from a material deformable without chipping Download PDFInfo
- Publication number
- EP0204032A2 EP0204032A2 EP85116182A EP85116182A EP0204032A2 EP 0204032 A2 EP0204032 A2 EP 0204032A2 EP 85116182 A EP85116182 A EP 85116182A EP 85116182 A EP85116182 A EP 85116182A EP 0204032 A2 EP0204032 A2 EP 0204032A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- blank
- splitting
- wall thickness
- outer edge
- area
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/02—Making articles shaped as bodies of revolution discs; disc wheels
- B21H1/04—Making articles shaped as bodies of revolution discs; disc wheels with rim, e.g. railways wheels or pulleys
-
- 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
Definitions
- the invention is directed to a wheel disc, in particular re-V-belt pulleys and a method for producing rotationally symmetrical bodies, such as wheels made of non-cutting deformable material, wherein a disc blank with a consistently thick wall is split on the outside edge, the gap area subsequently expanded and possibly compressed and is profiled below.
- EU-Al 012648 shows a generic manufacturing process.
- a multiple V-belt pulley is produced from a disk blank or a round blank in such a way that the disk blank is first split on the outside edge and then this split area is rolled out and profiled in several steps.
- the rim wreaths created by the splitting are first compressed at least in some areas so that the multiple V-profile can then be rolled in.
- the splitting in single-profiled disks is also known, for example, from GB-PS 1 024 282 or in the case of multi-profiled disks from the French utility model 82 09 541.
- the known methods have in common that the disc blank must have a wall thickness that enables the splitting as a first process step. This means that a certain weight is already determined by the thickness of the disc blank, which for technical reasons cannot be undercut.
- the object of the invention is to provide a solution with which a reduction in weight can be achieved in spite of these predetermined restrictions, wherein the wall thickness of the disc blanks required for splitting can be undercut from the start.
- this object is achieved according to the invention in that the outer edge region of the disc blank provided for splitting is swaged up prior to splitting.
- the invention provides that the outer edge region is compressed to a thickness which corresponds to at least twice the wall thickness of the disk blank.
- the invention is not limited to the ratio between the wall thickness of the disk blank and the wall thickness of the upset area, but this ratio has proven to be very practical. Obviously this ratio is achieved that with a given wall thickness that allows splitting, the disk blank can be made half as strong, which leads to enormous weight savings. Depending on the field of application of the end product, these conditions can of course be chosen completely differently, in order to repeat this.
- the upsetting of the outer edge region takes place in several stages.
- the invention provides that the upset edge region is split off-center in such a way that the two wreaths created by the split have different wall thicknesses and the end profile is profiled in such a way that the hub part is arranged off-center.
- the invention also provides a wheel disc, in particular a multiple V-belt pulley, which has been profiled from a disc blank by splitting and subsequent shaping.
- Such adfusionn R art are for example known by the generic state.
- the disadvantages, which consist in particular in the large material requirement, have already been mentioned above for the method. These disadvantages apply here in the same way.
- the above-mentioned object is achieved according to the invention in that the outer edge-side profile region is formed from an area of greater wall thickness, initially created on the disc blank, by compression than the disc blank, the subsequent splitting of this thickened outer edge region and the subsequent profiling of this region .
- the invention provides that the wall thickness of the flange formed by the blank is smaller than the material thickness required for splitting. It is of course essential for this wheel disk that the disk blank was present as a flat or profiled sheet metal disk as the starting product, i. H. not as a cast or drop-forged part.
- the wheel disc is formed from a blank of light or non-ferrous metal.
- 1 to 7 show individual cross sections of a wheel disc according to the invention after individual processing steps.
- F ig. 1 shows a round blank or a disk blank 1, the wall thickness of which is denoted by "x" and, in the example shown, is to be of such a size that it is no longer possible to split in a conventional manner. This measure would be for steel sheet z. B. about 2.3mm, for other materials this dimension is of course different.
- the disc blank is compressed on the outside edge.
- This area is designated by 2 in FIG. 2.
- the wall thickness of this area 2 on the outer edge is designated by "y”. In the example shown, it should correspond to twice the wall thickness "x”.
- This edge is subsequently split, so that two rings 3 and 3 'are formed, the wall thickness of which in turn has the dimension "x".
- FIGS. 4 to 7 now show further process steps, the rolling out of this edge region 2 and the A uspro- filleting in a profile shape 4 of FIG. 6, or a P ro- filform 5 to Fig. 7.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Pulleys (AREA)
Abstract
Description
Die Erfindung richtet sich auf eine Radscheibe, insbesonde re Mehrfach-V-Riemenscheiben sowie ein Verfahren zur Herstellung von rotationssymmetrischen Körpern, wie Rädern aus spanlosverformbaren Material, wobei ein Scheibenrohling mit einer durchgehend gleichstarken Wandstärke außenrandseitig gespalten, der Spaltbereich anschließend aufgeweitet und ggf. gestaucht und nachfolgend profiliert wird.The invention is directed to a wheel disc, in particular re-V-belt pulleys and a method for producing rotationally symmetrical bodies, such as wheels made of non-cutting deformable material, wherein a disc blank with a consistently thick wall is split on the outside edge, the gap area subsequently expanded and possibly compressed and is profiled below.
Es sind eine Reihe von Verfahren zur Herstellung derartiger Räder bekannt. So zeigt die EU-Al 012648 ein gattungsgemäßes Herstellungsverfahren. Aus einem Scheibenrohling bzw. einer Ronde wird dort eine Mehrfach-V-Riemenscheibe in der Weise erzeugt, daß zunächst der Scheibenrohling außenrandseitig aufgespalten und anschließend dieser aufgespaltene Bereich in mehreren Schritten ausgewalzt und profiliert wird. Dabei werden die durch das Spalten entstandenen Randkränze zunächst wenigstens bereichsweise gestaucht um das Mehrfach-V-Profil danach einwalzen zu können.A number of methods for manufacturing such wheels are known. EU-Al 012648 shows a generic manufacturing process. A multiple V-belt pulley is produced from a disk blank or a round blank in such a way that the disk blank is first split on the outside edge and then this split area is rolled out and profiled in several steps. The rim wreaths created by the splitting are first compressed at least in some areas so that the multiple V-profile can then be rolled in.
Das Aufspalten bei einfachprofilierten Scheiben ist beispielsweise auch aus der GB-PS 1 024 282 oder bei mehrfachprofilierten Scheiben aus dem französischen Gebrauchsmuster 82 09 541 bekannt.The splitting in single-profiled disks is also known, for example, from GB-
Den bekannten Verfahren gemeinsam ist, daß der Scheibenrohling eine Wandstärkendicke aufweisen muß, die das Aufspalten als ersten Verfahrensschritt ermöglicht. Damit ist ein bestimmtes Gewicht schon durch die Stärke des Scheibenrohlinges vorgegeben, welches aus herstelltechnischen Gründen gar nicht unterschritten werden kann.The known methods have in common that the disc blank must have a wall thickness that enables the splitting as a first process step. This means that a certain weight is already determined by the thickness of the disc blank, which for technical reasons cannot be undercut.
Aufgabe der Erfindung ist die Schaffung einer Lösung, mit der trotz dieser vorgegebenen Beschränkungen eine Gewichtsverringerung erzielbar ist, wobei die durch die für das Spalten notwendige Wandstärke der Scheibenrohlinge von Anfang an unterschritten werden kann.The object of the invention is to provide a solution with which a reduction in weight can be achieved in spite of these predetermined restrictions, wherein the wall thickness of the disc blanks required for splitting can be undercut from the start.
Bei einem Verfahren der eingangs bezeichneten Art wird diese Aufgabe gemäß der Erfindung dadurch gelöst, daß vor dem Spalten der zum Spalten vorgesehene Außenrandbereich des Scheibenrohlinges aufgestaucht wird.In a method of the type mentioned at the outset, this object is achieved according to the invention in that the outer edge region of the disc blank provided for splitting is swaged up prior to splitting.
Mit dieser Verfahrensweise wird erreicht, daß als Ausgangsmaterial Ronden bzw. Scheibenrohlinge herangezogen werden können, die eine nur noch von der Übertragung der Drehmomente mit den entsprechenden Rädern bestimmte Wandstärke aufweisen, d. h. deren Wandstärke sehr viel geringer sein kann, als dies an sich für das Aufspalten notwendig wäre. Damit läßt sich eine ganz erhebliche Gewichts- und Materialeinsparung erzielen.With this procedure it is achieved that blanks or disk blanks can be used as the starting material, which have a wall thickness determined only by the transmission of the torques with the corresponding wheels, i. H. whose wall thickness can be much smaller than would be necessary for splitting. This makes it possible to achieve considerable weight and material savings.
Grundsätzlich ist es bekannt, materialverdickte Bereiche auszuspalten, um sie dann weiterbearbeiten zu können, wobei diese bekannte Verfahrensweise an sich bei der Herstellung von Autoradfelgen eingesetzt wird, wobei die verdickten Außenrandbereiche bei der Herstellung der Ausgangsronden, z. B. durch Gesenkschmieden angeformt werden, so beispielsweise DE-AS 1 068 654, DE-PS 1 908 565 oder US-PS 2 075 294 und FR-PS 1 491 895.Basically, it is known auszuspalten materialverdickte areas, so that they can then process, this known procedure is used per se in the preparation of Autoradfelgen, wherein the thickened A ußenrandbereiche in the production of the output discs, z. B. molded by drop forging, such as DE-AS 1 068 654, DE-PS 1 908 565 or US-
Ein nachträgliches Aufstauchen eines Außenrandbereiches ist auch aus der alten deutschen Patentschrift 227 171 bekannt, die die Verdickung der Zähne von Kettenrädern für Fahrräder betrifft. Dort wird nach Einbringung der Verzahnung durch Aufstauchen des Zahnbereiches dieser Teil des Kettenrades verdickt.Subsequent emergence of an outer edge area is also known from the old German patent 227 171, which relates to the thickening of the teeth of chain wheels for bicycles. After inserting the toothing, this part of the chain wheel is thickened by upsetting the tooth area.
In Ausgestaltung sieht die Erfindung vor, daß das Aufstauchen des Außenrandbereiches auf eine Stärke erfolgt, die wenigstens der doppelten Wandstärke des Scheibenrohlinges entspricht.In an embodiment, the invention provides that the outer edge region is compressed to a thickness which corresponds to at least twice the wall thickness of the disk blank.
Natürlich ist die Erfindung nicht auf das hier angegebene Verhältnis zwischen Wandstärke des Scheibenrohlinges und der Wandstärke des aufgestauchten Bereiches beschränkt, dieses Verhältnis hat sich allerdings als sehr praktikabel erwiesen. Erkennbar wird mit diesem Verhältnis erreicht, daß bei einer vorgegebenen Wandstärke, die ein Spalten ermöglicht, der Scheibenrohling halb so stark ausgebildet sein kann, was zu einer enormen Gewichtseinsparung führt. Je nach Einsatzgebiet des Endproduktes können diese Verhältnisse, um dies zu wiederholen, natürlich noch gänzlich anders gewählt werden.Of course, the invention is not limited to the ratio between the wall thickness of the disk blank and the wall thickness of the upset area, but this ratio has proven to be very practical. Obviously this ratio is achieved that with a given wall thickness that allows splitting, the disk blank can be made half as strong, which leads to enormous weight savings. Depending on the field of application of the end product, these conditions can of course be chosen completely differently, in order to repeat this.
Nach der Erfindung ist auch vorgesehen, daß das Aufstauchen des Außenrandbereiches mehrstufig erfolgt.According to the invention it is also provided that the upsetting of the outer edge region takes place in several stages.
In besonderer Gestaltung sieht die Erfindung vor, daß das Spalten des aufgestauchten Randbereiches außermittig derart erfolgt, daß die beiden durch das Spalten entstehenden Kränze unterschiedliche Wandstärken aufweisen und das Ausprofilieren des Endprofiles derart erfolgt, daß der Nabenteil außermittig angeordnet ist.In a special design, the invention provides that the upset edge region is split off-center in such a way that the two wreaths created by the split have different wall thicknesses and the end profile is profiled in such a way that the hub part is arranged off-center.
Die Erfindung sieht auch eine Radscheibe vor, insbesondere Mehrfach-V-Riemenscheibe, die aus einem Scheibenrohling durch Spalten und anschließendes Spanlosverformen profiliert worden ist.The invention also provides a wheel disc, in particular a multiple V-belt pulley, which has been profiled from a disc blank by splitting and subsequent shaping.
Derartige Radscheiben sind beispielsweise durch den gattungsbildenden Stand der Technik bekannt. Die Nachteile, die insbesondere in dem großen Materialbedarf bestehen, sind weiter oben bereits zum Verfahren angeführt worden. Diese Nachteile gelten hier in gleicher Weise.Such adscheiben R art are for example known by the generic state. The disadvantages, which consist in particular in the large material requirement, have already been mentioned above for the method. These disadvantages apply here in the same way.
Bei einer Radscheibe der Gattung wird die oben genannte Aufgabe gemäß der Erfindung dadurch gelöst, daß der außenrandseitige Profilbereich aus einem am Scheibenrohling zunächst durch Stauchen entstandene Bereich größerer Wandstärke gegenüber dem Scheibenrohling, dem nachfolgenden Spalten dieses verdickten Außenrandbereiches und dem daraufhin erfolgten Endprofilieren dieses Bereiches gebildet ist.In the case of a wheel disc of the type, the above-mentioned object is achieved according to the invention in that the outer edge-side profile region is formed from an area of greater wall thickness, initially created on the disc blank, by compression than the disc blank, the subsequent splitting of this thickened outer edge region and the subsequent profiling of this region .
In ganz wesentlicher Ausgestaltung sieht die Erfindung vor, daß die Wandstärke des vom Rohling gebildeten Flansches kleiner ist, als die zum Spalten benötigte Materialstärke. Wesentlich bei dieser Radscheibe ist natürlich, daß der Scheibenrohling als ebene oder profilierte Blechscheibe als Ausgangsprodukt vorgelegen hat, d. h. nicht etwa als Guß- oder Gesenkschmiedeteil.In a very essential embodiment, the invention provides that the wall thickness of the flange formed by the blank is smaller than the material thickness required for splitting. It is of course essential for this wheel disk that the disk blank was present as a flat or profiled sheet metal disk as the starting product, i. H. not as a cast or drop-forged part.
In der oben genannten DE-AS 1 068 654 ist ausgeführt, daß es bei Fahrzeugfelgen aus Leichtmetall nicht möglich sei, diese durch Spalten und nachfolgendem Ausrollen zu bilden. Es hat sich herausgestellt, daß dieses Vorurteil zu Unrecht besteht. Erfindunggemäß ist daher auch vorgesehen, daß die Radscheibe aus einem Rohling aus Leicht- oder Buntmetall gebildet ist.In the above-mentioned DE-AS 1 068 654 it is stated that it is not possible for vehicle rims made of light metal to be formed by splitting and subsequent rolling out. It turns out that this prejudice is wrong. According to the invention it is therefore also provided that the wheel disc is formed from a blank of light or non-ferrous metal.
Die Erfindung ist nachstehend anhand der Zeichnung beispielsweise näher erläutert.The invention is explained below with reference to the drawing, for example.
Die Fig. 1 bis 7 zeigen einzelne Querschnitte einer Radscheibe nach der Erfindung nach einzelnen Bearbeitungsschritten.1 to 7 show individual cross sections of a wheel disc according to the invention after individual processing steps.
Fig. 1 zeigt eine Ronde bzw. einen Scheibenrohling 1, dessen Wandstärke mit "x" bezeichnet ist und im dargestellten Beispiel eine solche Größe aufweisen soll, daß ein Spalten in herkömmlicher Weise nicht mehr möglich ist. Dieses Maß betrüge bei Stahlblech z. B. etwa 2,3mm, bei anderen Materialien ist dieses Maß selbstverständlich anders. F ig. 1 shows a round blank or a disk blank 1, the wall thickness of which is denoted by "x" and, in the example shown, is to be of such a size that it is no longer possible to split in a conventional manner. This measure would be for steel sheet z. B. about 2.3mm, for other materials this dimension is of course different.
Um ein Spalten zu ermöglichen, wird der Scheibenrohling außenrandseitig gestaucht. Dieser Bereich ist in Fig. 2 mit 2 bezeichnet. In Fig. 2 ist die Wandstärke dieses außenrandseitigen Bereiches 2 mit "y" bezeichnet. Es soll im dargestellten Beispiel dem Doppelten der Wandstärke "x" entsprechen.To enable splitting, the disc blank is compressed on the outside edge. This area is designated by 2 in FIG. 2. 2, the wall thickness of this
Nachfolgend wird dieser Rand gespalten, so daß zwei Kränze 3 und 3' entstehen, deren Wandstärke wiederum das Maß "x" aufweist.This edge is subsequently split, so that two
Die Fig. 4 bis 7 zeigen nunmehr weitere Verfahrensschritte, so das Ausrollen dieses Randbereiches 2 und das Auspro- filieren in eine Profilform 4 nach Fig. 6 oder einer Pro- filform 5 nach Fig. 7.FIGS. 4 to 7 now show further process steps, the rolling out of this
Aus den Fig. ist erkennbar, daß der mit 6 bezeichnete Flansch der Radscheibe, die unveränderte Wandstärke "x" des Scheibenrohlinges 1 aufweist.It can be seen from the figures that the flange of the wheel disk, designated 6, has the unchanged wall thickness "x" of the disk blank 1.
Nicht in den Fig. dargestellt ist die Möglichkeit, außermittig zu spalten, so daß die Kränze 3 und 3' unterschiedliche Wandstärken aufweisen, so daß der Profilbereich asymmetrisch auswalzbar ist.The possibility of splitting off-center is not shown in the figures, so that the
Natürlich ist das beschriebene Ausführungsbeispiel noch in vielfacher Hinsicht abzuändern, ohne den Grundgedanken der Erfindung zu verlassen. So ist die Erfindung insbesondere nicht auf den Einsatz eines bestimmten Materiales beschränkt, noch auf die in den Fig. dargestellten Profilformen u. dgl. mehr.Of course, the described embodiment can be modified in many ways without departing from the basic idea of the invention. Thus, the invention is in particular not limited to the use of a specific material, nor to the profile shapes shown in the figures and the like. Like. more.
Claims (9)
dadurch gekennzeichnet,
daß das Aufstauchen des Außenrandbereiches auf eine Stärke erfolgt, die wenigstens der doppelten Wandstärke des Scheibenrohlinges entspricht.2. The method according to claim 1,
characterized,
that the upsetting of the outer edge area takes place to a thickness which corresponds to at least twice the wall thickness of the disc blank.
dadurch gekennzeichnet,
daß das Aufstauchen des Außenrandbereiches mehrstufig erfolgt.i3. Method according to claim 1 or 2,
characterized,
that the upsetting of the outer edge area takes place in several stages.
) dadurch gekennzeichnet,
daß das Spalten des aufgestauchten Randbereiichc außermittig derart erfolgt, daß die beiden durch das Spalten entstehenden Kränze unterschiedliche Wandstärken aufweisen und das Ausprofilieren des Endprofiles derart erfoigt, daß der Nabenteil außermittig angeordnet ist.4. The method according to any one of the preceding claims,
) characterized,
that the splitting of the upturned edge region takes place off-center in such a way that the two ent by splitting standing wreaths have different wall thicknesses and the profiling of the end profile takes place in such a way that the hub part is arranged off-center.
dadurch gekennzeichnet,
daß als Rohling ein solcher mit einer Wandstärke einge- setzt wird, die geringer ist als die zum Spalten benötigte Materialstärke.5. The method according to any one of the preceding claims,
characterized,
that a blank with a wall thickness that is less than the material thickness required for splitting is used as the blank.
dadurch gekennzeichnet,
daß der außenrandseitige Profilbereich aus einem am Scheibenrohling (1) zunächst durch Stauchen entstandenen Bereich (2) größerer Wandstärke gegenüber dem Scheibenrohling, dem nachfolgenden Spalten dieses verdickten Außenrandbereiches (2) und dem daraufhin erfolgten Endprofilieren dieses Bereiches gebildet ist.6. wheel disc, in particular multiple V-belt pulley, which has been profiled from a disc blank by splitting and subsequent cold forming,
characterized,
that the outer edge-side profile area is formed from an area (2) of thicker wall thickness initially created by upsetting on the disk blank (1) compared to the disk blank, the subsequent splitting of this thickened outer edge area (2) and the subsequent profiling of this area.
dadurch gekennzeichnet,
daß die Wandstärke (x) des vom Rohling (1) gebildeten Flan- sches kleiner ist, als die zum Spalten benötigte Materialstärke.7. wheel disc, according to claim 6,
characterized,
that the wall thickness (x) of the flange formed by the blank (1) is smaller than the material thickness required for splitting.
dadurch gekennzeichnet,
daß sie aus einem Rohling aus Leicht- oder Buntmetall gebildet ist.8. wheel disc according to one of the preceding claims,
characterized,
that it is formed from a blank of light or non-ferrous metal.
dadurch gekennzeichnet,
daß die Wandstärke des Rohlings kleiner/gleich 2,5 mm beträgt.9. wheel disc according to claim 7 made of steel,
characterized,
that the wall thickness of the blank is less than or equal to 2.5 mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3519719 | 1985-06-01 | ||
| DE19853519719 DE3519719A1 (en) | 1985-06-01 | 1985-06-01 | WHEEL DISC, ESPECIALLY MULTIPLE V-PULLEY AND METHOD FOR THE PRODUCTION OF ROTATIONALLY-SYMMETRIC BODIES FROM CHANGE-MOLDABLE MATERIAL |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0204032A2 true EP0204032A2 (en) | 1986-12-10 |
| EP0204032A3 EP0204032A3 (en) | 1987-08-19 |
Family
ID=6272220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP85116182A Withdrawn EP0204032A3 (en) | 1985-06-01 | 1985-12-18 | Pulley, especially a multiple v-pulley, and method of making rotation-symmetrical objects from a material deformable without chipping |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0204032A3 (en) |
| DE (1) | DE3519719A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3806024C1 (en) * | 1988-02-26 | 1989-03-23 | Wf-Maschinenbau Und Blechformtechnik Gmbh & Co Kg, 4415 Sendenhorst, De | |
| DE3917925A1 (en) * | 1989-06-01 | 1990-12-06 | Leifeld & Co | METHOD FOR PRODUCING AN ASYMMETRICAL PULLEY FROM A METAL ROTOR |
| EP0427916A2 (en) * | 1989-11-16 | 1991-05-22 | Firma Carl Freudenberg | Process for the production of torsional damper |
| DE4104751A1 (en) * | 1991-02-15 | 1992-10-15 | H & H Metalform Maschinenbau U | METHOD FOR PRODUCING ROTATIONALLY-SYMMETRICAL WORKPIECES AND ARRANGEMENT FOR IMPLEMENTING THE METHOD |
| EP0594927A1 (en) * | 1992-10-30 | 1994-05-04 | Leifeld GmbH & Co. | Method of producing a brake shoe |
| WO2001088403A1 (en) * | 2000-05-15 | 2001-11-22 | Pbr Australia Pty Ltd | Sheet metal brake shoe and method of manufacturing the sheet metal brake shoe |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3931599A1 (en) * | 1989-08-25 | 1991-02-28 | Wf Maschinenbau Blechformtech | Internal teeth prodn. in cut-shaped workpiece - by pressing circular blank against toothed tool by rollers |
| KR100208564B1 (en) * | 1992-01-10 | 1999-07-15 | 가네미츠 유키오 | Boss part deformation method of panel workpiece |
| DE4244802C2 (en) * | 1992-01-10 | 1998-09-17 | Kanemitsu Akashi Kk | Method for forming boss made of metal |
| DE19602298C2 (en) * | 1996-01-23 | 1999-11-11 | Leifeld Gmbh & Co | Process for producing a rotationally symmetrical part |
| CN101817049B (en) * | 2010-03-29 | 2012-10-03 | 东莞市港润机械科技有限公司 | Process for machining split spinning belt pulley |
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|---|---|---|---|---|
| US2075294A (en) * | 1934-03-26 | 1937-03-30 | Kelsey Hayes Wheel Co | Method of forming vehicle wheels |
| DE1068654B (en) * | 1959-11-12 | |||
| DE1272870B (en) * | 1961-11-16 | 1968-07-18 | Dunlop Rubber Co | Method for manufacturing a wheel body |
| DE1908465A1 (en) * | 1969-02-20 | 1970-09-03 | Fuchs Fa Otto | Process for the non-cutting production of wheels, in particular motor vehicle wheels |
| US4094051A (en) * | 1977-05-16 | 1978-06-13 | Lee C. Moore Corporation | Method of making sheaves |
| GB2055065A (en) * | 1979-06-27 | 1981-02-25 | Percival Barker K | Method and apparatus for formation of rotary or curved work piece profile |
| EP0126489A1 (en) * | 1983-05-23 | 1984-11-28 | Fuji Kiko Company, Limited | Poly-V Pulley and manufacturing method therefor |
| EP0143032B1 (en) * | 1983-10-21 | 1988-04-20 | Aubecq Auxi S.A. | Manufacturing method of a multiple v-groove pulley, and pulley so produced |
-
1985
- 1985-06-01 DE DE19853519719 patent/DE3519719A1/en not_active Withdrawn
- 1985-12-18 EP EP85116182A patent/EP0204032A3/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1068654B (en) * | 1959-11-12 | |||
| US2075294A (en) * | 1934-03-26 | 1937-03-30 | Kelsey Hayes Wheel Co | Method of forming vehicle wheels |
| DE1272870B (en) * | 1961-11-16 | 1968-07-18 | Dunlop Rubber Co | Method for manufacturing a wheel body |
| DE1908465A1 (en) * | 1969-02-20 | 1970-09-03 | Fuchs Fa Otto | Process for the non-cutting production of wheels, in particular motor vehicle wheels |
| US4094051A (en) * | 1977-05-16 | 1978-06-13 | Lee C. Moore Corporation | Method of making sheaves |
| GB2055065A (en) * | 1979-06-27 | 1981-02-25 | Percival Barker K | Method and apparatus for formation of rotary or curved work piece profile |
| EP0126489A1 (en) * | 1983-05-23 | 1984-11-28 | Fuji Kiko Company, Limited | Poly-V Pulley and manufacturing method therefor |
| EP0143032B1 (en) * | 1983-10-21 | 1988-04-20 | Aubecq Auxi S.A. | Manufacturing method of a multiple v-groove pulley, and pulley so produced |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3806024C1 (en) * | 1988-02-26 | 1989-03-23 | Wf-Maschinenbau Und Blechformtechnik Gmbh & Co Kg, 4415 Sendenhorst, De | |
| EP0329925A2 (en) * | 1988-02-26 | 1989-08-30 | Wf-Maschinenbau Und Blechformtechnik Gmbh & Co. Kg | Device for manufacturing work pieces such as pulleys with multiple V-profiles, or the like |
| EP0329925A3 (en) * | 1988-02-26 | 1990-11-07 | Wf-Maschinenbau Blechformtech | Device for manufacturing work pieces such as pulleys with multiple v-profiles, or the like |
| DE3917925A1 (en) * | 1989-06-01 | 1990-12-06 | Leifeld & Co | METHOD FOR PRODUCING AN ASYMMETRICAL PULLEY FROM A METAL ROTOR |
| US5113584A (en) * | 1989-06-01 | 1992-05-19 | Leifeld Gmbh & Co. | Process for manufacturing an asymmetric pulley from a metal disk |
| EP0427916A2 (en) * | 1989-11-16 | 1991-05-22 | Firma Carl Freudenberg | Process for the production of torsional damper |
| EP0427916A3 (en) * | 1989-11-16 | 1991-09-18 | Firma Carl Freudenberg | Process for the production of torsional damper |
| DE4104751A1 (en) * | 1991-02-15 | 1992-10-15 | H & H Metalform Maschinenbau U | METHOD FOR PRODUCING ROTATIONALLY-SYMMETRICAL WORKPIECES AND ARRANGEMENT FOR IMPLEMENTING THE METHOD |
| EP0594927A1 (en) * | 1992-10-30 | 1994-05-04 | Leifeld GmbH & Co. | Method of producing a brake shoe |
| WO2001088403A1 (en) * | 2000-05-15 | 2001-11-22 | Pbr Australia Pty Ltd | Sheet metal brake shoe and method of manufacturing the sheet metal brake shoe |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3519719A1 (en) | 1986-12-04 |
| EP0204032A3 (en) | 1987-08-19 |
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