EP2314395B2 - Method and device for forming workpieces - Google Patents

Method and device for forming workpieces Download PDF

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Publication number
EP2314395B2
EP2314395B2 EP09013252.3A EP09013252A EP2314395B2 EP 2314395 B2 EP2314395 B2 EP 2314395B2 EP 09013252 A EP09013252 A EP 09013252A EP 2314395 B2 EP2314395 B2 EP 2314395B2
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EP
European Patent Office
Prior art keywords
workpiece
mandrel
contour
forming tool
rotational axis
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EP09013252.3A
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German (de)
French (fr)
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EP2314395A1 (en
EP2314395B1 (en
Inventor
Ahmet Neset Özsoy
Cem Denizhan Biro
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REPKON MACHINE AND TOOL INDUSTRY AND TRADE INC.
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Repkon Machine and Tool Industry and Trade Inc
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Application filed by Repkon Machine and Tool Industry and Trade Inc filed Critical Repkon Machine and Tool Industry and Trade Inc
Priority to ES09013252.3T priority Critical patent/ES2388122T5/en
Priority to EP09013252.3A priority patent/EP2314395B2/en
Publication of EP2314395A1 publication Critical patent/EP2314395A1/en
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    • 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

Definitions

  • the invention relates to a device for forming workpieces according to the preamble of claim 1 and a method for forming workpieces according to the preamble of claim 9, (see, for example DE-A-35 45 506 ).
  • the object of the invention is to provide a device and a method which do not have the disadvantages mentioned.
  • At least one forming tool acting on the inner contour of the workpiece is provided, which is supported on a mandrel.
  • This allows both-sided machining of the inner and outer contours.
  • the simultaneous attack of the forming tools on the inner and outer contour makes it possible to produce thin wall thicknesses. Due to the support on the mandrel acting on the inner contour of the workpiece forming tools must be performed only in the axial direction.
  • the shape of the inner contour of the formed workpiece can be predetermined by the outer contour of the mandrel.
  • the device shown has a rotatable and parallel to a longitudinal axis X of the device provided mandrel 7 and one or a plurality, optionally in the axial longitudinal direction displaceable (n), holder 10, on which one or a plurality of forming tool (s) 9 pivotally or otherwise are fixed with variable distance to the axis X.
  • the forming tools may be rollers. It is possible to provide a number of engaging on the inner contour of the workpiece 3 forming tools 9, which corresponds to the number of acting on the outer contour of the workpiece 3 forming tools 8.
  • the forming tools 8 acting on the outer contour of the workpiece 3 can preferably be moved along a predetermined contour relative to the workpiece 3.
  • a tool holder 2 which receives the workpiece 3 and possibly centered.
  • An advantageous embodiment also provides a workpiece support 13, which is clamped against the free end of the workpiece 3 or supports it in other ways. This may be rotatably supported against the workpiece 3, e.g. by ball bearings 15 and / or by a pressure device, e.g. a pressure cylinder 14 to be axially movable.
  • the mandrel 7 has an outer contour, which ideally corresponds to the inner contour of the formed workpiece 4. On this contour of the mandrel 7, the / on the inner contour of the workpiece 3 attacking (s) forming tool (s) 9 based.
  • the forming tools 9 acting on the inner contour of the workpiece 3, in particular in the embodiment of the functional surfaces coming into contact with the mandrel 7 or workpiece 3, are designed in a manner which causes them to roll or slide on the mandrel 7 and to machine the workpiece 3 during forming permits.
  • a clamping element 11 for example an annular spring, can be provided.
  • the workpiece 3 can be clamped in the, advantageously driven, tool holder 2 of the possibly axially movable main spindle box 1 of the mandrel 7.
  • tool holder 2 for this purpose may be provided on the mandrel 7, optionally rotatably mounted, printhead 7.2.
  • the forming tools 8 acting on the outer contour can be moved in a manner that enables the production of the desired outer contour of the formed workpiece 4.
  • the number of forming tools 8 acting on the outer contour of the workpiece 3 is preferably identical to the number of forming tools 9 acting on the inner contour of the workpiece 2.
  • the forming tools can then be arranged so that they attack in pairs on the inner and outer contour at the same point of the workpiece 3.
  • these outer and inner forming tools 8, 9 are preferably in a fixed position in the axial direction to each other.
  • the workpiece 3 can be cooled by coolant from the inside and / or outside.
  • the clamped workpiece 3 is centered by the tool holder 2 and against the pressure of, preferably e.g. pressed by a feed cylinder 6 movable, mandrel 7.
  • the bracing can be done manually or automatically by a tensioning device, not shown.
  • the unit thus formed can be driven, preferably by a feed cylinder 5, in a suitable forming position.
  • the mandrel 7 is supported in the interior of the workpiece 3, optionally via a print head 7, 2, either at the bottom of the workpiece 3 or at the stop (not shown) in the tool holder 2.
  • a rotary connection 6,1 between the mandrel 7 and a pressure device, e.g. the piston rod of a feed cylinder 6 may be provided. If two counteracting pressure devices, for example pressure cylinders 5 and 6, are provided, the unit formed from mandrel 7, workpiece 3 and workpiece holder 2 can be moved by a higher force of a feed cylinder with a controlled feed.
  • the forming tools bring the material of the workpiece 3 by the contact pressure to flow, wherein radial, tangential and / or axial material flow can occur.
  • the radial distance of each engaging outer and inner contour surfaces of the forming tools to each other determines the wall thickness W to be formed of the formed workpiece 4.
  • the inner diameter of the formed workpiece 4 in each axial position of the feed region is predetermined by the diameter of the mandrel 7 in the respective axial position and the dimensions of the inner contour engaging forming tools 9, which are supported on the mandrel 7.
  • the outer diameter of the formed workpiece of the wall thickness W is predetermined by the position of the forming tools acting on the outer contour. This makes it possible to produce workpieces with constant wall thickness W in the axial direction, it is also possible to produce regions with different wall thicknesses W. By a corresponding shaping of the mandrel 7, it is possible to produce conical, convex or concave transitions between regions with different diameters. In particular, it is possible to manufacture cylindrical portions having a smaller diameter than the adjacent portion (s).
  • the optionally provided workpiece support 13 can be axially displaced from the flowing material against a, preferably adjustable, back pressure.
  • the outer forming rollers 8 and 9 and the optionally provided workpiece support and / or the unit consisting of the main spindle box 1, chuck 2 and finished part 4 and optionally mandrel 7 can optionally be moved into an unloading position.
  • a displaceable workpiece holder 2 is provided.
  • a driven workpiece holder 2 may be provided.
  • the number of forming tools 8 acting on the outer contour of the workpiece 3 can match the number of forming tools 9 acting on the inner contour of the workpiece 3.
  • a forming tool 8 and 9 acting on the respective contour can engage in pairs on the inner and outer contours of the workpiece 3.
  • the forming tools 8 acting on the outer contour of the workpiece 3 can follow a predetermined contour.
  • the predetermined contour corresponds to that of the formed workpiece 4.
  • At least one forming tool can be designed as a forming roller.
  • the surfaces over which the forming tools 8 engage the outer contour of the workpiece 3 and the surfaces via which the forming tools 9 engage the inner contour of the workpiece 3 can be profiled differently.
  • an axially displaceable workpiece support 13 is provided.
  • a rotatable about the axis of rotation X storage 15 a workpiece support 13 is provided.

Description

Die Erfindung betrifft eine Vorrichtung zum Umformen von Werkstücken nach dem Oberbegriff des Anspruchs 1 sowie ein Verfahren zum Umformen von Werkstücken nach dem Oberbegriff das Anspruchs 9, (siehe z.B. DE-A-35 45 506 ).The invention relates to a device for forming workpieces according to the preamble of claim 1 and a method for forming workpieces according to the preamble of claim 9, (see, for example DE-A-35 45 506 ).

Es sind, z.B. Verfahren bekannt, bei denen Werkstücke in Rotation versetzt werden und dann durch von außen an die Werkstücke herangeführte Umformwerkzeuge, bei denen es sich meist um Walzen oder Rollen handelt, umgeformt werden. Oft sind diese Werkstücke ganz oder zum Teil als Hohlkörper ausgeführt. In diesen Fällen erweist sich die Herstellung von Übergängen zwischen Mantelflächen unterschiedlicher Durchmesser als problematisch. Insbesondere ist es schwierig, dabei gleichmäßige und definierte Wandstärken zu erzeugen. Die Reduzierung von Außendurchmessern mit konischen Übergängen zu kleineren Durchmessern wird daher nach dem heutigen Stand der Technik auf hydraulischen Pressen durchgeführt. Diese Technik hat den Nachteil, dass sie bei dünnwandigen Werkstücken nur begrenzt eingesetzt werden kann. Unterschiedliche Wanddicken sind bei dieser Formgebung nicht möglich.They are, e.g. Methods are known in which workpieces are rotated and then by externally applied to the workpieces forming tools, which are usually rollers or rollers, are transformed. Often these workpieces are completely or partially designed as a hollow body. In these cases, the production of transitions between lateral surfaces of different diameters turns out to be problematic. In particular, it is difficult to produce uniform and defined wall thicknesses. The reduction of outer diameters with conical transitions to smaller diameters is therefore carried out on hydraulic presses according to the current state of the art. This technique has the disadvantage that it can be used with thin-walled workpieces only limited. Different wall thicknesses are not possible with this shaping.

Aufgabe der Erfindung ist es, eine Vorrichtung und ein Verfahren aufzuzeigen, welche die genannten Nachteile nicht aufweisen.The object of the invention is to provide a device and a method which do not have the disadvantages mentioned.

Gelöst wird diese Aufgabe durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 und ein Verfahren mit den Merkmalen des Anspruchs 9.This object is achieved by a device having the features of claim 1 and a method having the features of claim 9.

Erfindungsgemäß wird mindestens ein an der Innenkontur des Werkstücks angreifendes Umformwerkzeug vorgesehen, welches sich an einem Dorn abstützt. Dadurch wird eine beidseitige Bearbeitung von Innen- und Außenkontur ermöglicht. Durch den gleichzeitigen Angriff der Umformwerkzeuge an Innen- und Außenkontur ist die Fertigung dünner Wanddicken möglich. Durch die Abstützung an dem Dorn müssen die an der Innenkontur des Werkstücks angreifenden Umformwerkzeuge nur noch in axialer Richtung geführt werden. Die Form der Innenkontur des umgeformten Werkstücks kann hierbei durch die Außenkontur des Dorns vorgegeben werden.According to the invention, at least one forming tool acting on the inner contour of the workpiece is provided, which is supported on a mandrel. This allows both-sided machining of the inner and outer contours. The simultaneous attack of the forming tools on the inner and outer contour makes it possible to produce thin wall thicknesses. Due to the support on the mandrel acting on the inner contour of the workpiece forming tools must be performed only in the axial direction. The shape of the inner contour of the formed workpiece can be predetermined by the outer contour of the mandrel.

Die Erfindung wird nachfolgend anhand der Figuren 1 bis 3 schematisch näher erläutert.

Figur 1 -
zeigt eine Darstellung einer erfindungsgemä- ßen Vorrichtung während der Bearbeitung eines Werkstücks,
Figur 2 -
zeigt eine Darstellung einer erfindungsgemä- ßen Vorrichtung zum Ende der Bearbeitung ei- nes Werkstücks,
Figur 3 -
zeigt die Schnittdarstellung eines mit einer erfindungsgemäßen Vorrichtung bearbeiteten Werkstücks.
The invention will be described below with reference to FIGS. 1 to 3 schematically explained in more detail.
FIG. 1 -
shows a representation of a device according to the invention during the machining of a workpiece,
FIG. 2 -
shows a representation of an apparatus according to the invention for the end of the machining of a workpiece,
FIG. 3 -
shows the sectional view of a machined with a device according to the invention workpiece.

Die dargestellte Vorrichtung weist einen drehbaren und parallel zu einer Längsachse X der Vorrichtung vorgesehenen Dorn 7 und einen oder eine Mehrzahl, gegebenenfalls in axialer Längsrichtung verschiebbare(n), Halter 10 auf, an dem ein oder eine Mehrzahl Umformwerkzeug(e) 9 schwenkbar oder anderweitig mit variablem Abstand zur Achse X befestigt sind. Bei den Umformwerkzeugen kann es sich beispielsweise um Rollen handeln. Es besteht die Möglichkeit, eine Anzahl von an der Innenkontur des Werkstücks 3 angreifenden Umformwerkzeugen 9 vorzusehen, die der Anzahl der an der äußeren Kontur des Werkstücks 3 angreifenden Umformwerkzeuge 8 entspricht. Die an der äußeren Kontur des Werkstücks 3 angreifenden Umformwerkzeuge 8 können vorzugsweise entlang einer vorgegebenen Kontur relativ zum Werkstück 3 bewegt werden. Es kann eine Werkzeugaufnahme 2 vorgesehen sein, die das Werkstück 3 aufnimmt und unter Umständen auch zentriert. Eine vorteilhafte Ausführungsform sieht ebenfalls eine Werkstückunterstützung 13 vor, die gegen das freie Ende des Werkstücks 3 gespannt wird oder es auf andere Weise unterstützt. Diese kann gegen das Werkstück 3 verdrehbar gelagert sein, z.B. durch Kugellager 15 und/oder durch eine Andruckvorrichtung, z.B. einen Andruckzylinder 14 axial bewegbar sein.The device shown has a rotatable and parallel to a longitudinal axis X of the device provided mandrel 7 and one or a plurality, optionally in the axial longitudinal direction displaceable (n), holder 10, on which one or a plurality of forming tool (s) 9 pivotally or otherwise are fixed with variable distance to the axis X. For example, the forming tools may be rollers. It is possible to provide a number of engaging on the inner contour of the workpiece 3 forming tools 9, which corresponds to the number of acting on the outer contour of the workpiece 3 forming tools 8. The forming tools 8 acting on the outer contour of the workpiece 3 can preferably be moved along a predetermined contour relative to the workpiece 3. It can be provided a tool holder 2, which receives the workpiece 3 and possibly centered. An advantageous embodiment also provides a workpiece support 13, which is clamped against the free end of the workpiece 3 or supports it in other ways. This may be rotatably supported against the workpiece 3, e.g. by ball bearings 15 and / or by a pressure device, e.g. a pressure cylinder 14 to be axially movable.

Der Dorn 7 verfügt über eine äußere Kontur, die idealerweise der inneren Kontur des umgeformten Werkstücks 4 entspricht. Auf dieser Kontur des Dornes 7 stützen sich das/ die an der inneren Kontur des Werkstücks 3 angreifende(n) Umformwerkzeug(e) 9 ab. Dabei sind die an der Innenkontur des Werkstücks 3 angreifenden Umformwerkzeuge 9, insbesondere in der Ausführung der mit Dorn 7 oder Werkstück 3 in Berührung kommenden Funktionsflächen, in einer Weise ausgeführt, die ein Abrollen oder -gleiten auf dem Dorn 7 und eine Bearbeitung des Werkstücks 3 während der Umformung zulässt.The mandrel 7 has an outer contour, which ideally corresponds to the inner contour of the formed workpiece 4. On this contour of the mandrel 7, the / on the inner contour of the workpiece 3 attacking (s) forming tool (s) 9 based. In this case, the forming tools 9 acting on the inner contour of the workpiece 3, in particular in the embodiment of the functional surfaces coming into contact with the mandrel 7 or workpiece 3, are designed in a manner which causes them to roll or slide on the mandrel 7 and to machine the workpiece 3 during forming permits.

Zur Absicherung des Kontaktes der an der inneren Kontur des Werkstücks 3 angreifenden Umformwerkzeuge 9 zum Dorn 7 kann ein Spannelement 11, zum Beispiel eine Ringfeder, vorgesehen sein. Das Werkstück 3 kann in der, vorteilhafterweise angetriebenen, Werkzeugaufnahme 2 des gegebenenfalls axial verfahrbaren Hauptspindelkastens 1 des Dornes 7 verspannt werden. Zu diesem Zweck kann an dem Dorn 7 ein, gegebenenfalls drehbar gelagerter, Druckkopf 7,2 vorgesehen sein.To secure the contact of the forming tool 9 acting on the inner contour of the workpiece 3 to the mandrel 7, a clamping element 11, for example an annular spring, can be provided. The workpiece 3 can be clamped in the, advantageously driven, tool holder 2 of the possibly axially movable main spindle box 1 of the mandrel 7. For this purpose may be provided on the mandrel 7, optionally rotatably mounted, printhead 7.2.

Die an der äußeren Kontur angreifenden Umformwerkzeuge 8 sind in einer Weise verfahrbar, die die Herstellung der gewünschten äußeren Kontur des umgeformten Werkstücks 4 ermöglicht. Die Anzahl der an der äußeren Kontur des Werkstücks 3 angreifenden Umformwerkzeuge 8 ist vorzugsweise mit der Anzahl der an der inneren Kontur des Werkstücks 2 angreifenden Umformwerkzeuge 9 identisch. Weiter können die Umformwerkzeuge dann so angeordnet werden, dass sie jeweils paarweise an Innen- und Außenkontur an der gleichen Stelle des Werkstücks 3 angreifen. Während der Umformung stehen diese äußeren und inneren Umformwerkzeuge 8, 9 vorzugweise in axialer Richtung in einer Fixposition zueinander.The forming tools 8 acting on the outer contour can be moved in a manner that enables the production of the desired outer contour of the formed workpiece 4. The number of forming tools 8 acting on the outer contour of the workpiece 3 is preferably identical to the number of forming tools 9 acting on the inner contour of the workpiece 2. Next, the forming tools can then be arranged so that they attack in pairs on the inner and outer contour at the same point of the workpiece 3. During the forming, these outer and inner forming tools 8, 9 are preferably in a fixed position in the axial direction to each other.

Während der Umformung kann das Werkstück 3 durch Kühlmittel von innen und/oder außen gekühlt werden. Das eingespannte Werkstück 3 wird von der Werkzeugaufnahme 2 zentriert und gegen den Druck des, vorzugsweise z.B. durch einen Vorschubzylinder 6 bewegbaren, Dornes 7 angepresst. Die Verspannung kann dabei manuell oder durch eine nicht dargestellte Spannvorrichtung automatisch erfolgen. Die so gebildete Einheit kann so, vorzugsweise durch einen Vorschubzylinder5, in eine geeignete Umformposition gefahren werden. Dabei stützt sich der Dorn 7 im Inneren des Werkstücks 3, gegebenenfalls über einen Druckkopf 7,2, ab, entweder am Boden des Werkstücks 3 oder am nicht dargestellten Anschlag in der Werkzeugaufnahme 2.During the deformation, the workpiece 3 can be cooled by coolant from the inside and / or outside. The clamped workpiece 3 is centered by the tool holder 2 and against the pressure of, preferably e.g. pressed by a feed cylinder 6 movable, mandrel 7. The bracing can be done manually or automatically by a tensioning device, not shown. The unit thus formed can be driven, preferably by a feed cylinder 5, in a suitable forming position. In this case, the mandrel 7 is supported in the interior of the workpiece 3, optionally via a print head 7, 2, either at the bottom of the workpiece 3 or at the stop (not shown) in the tool holder 2.

Es kann weiterhin eine im Detail nicht dargestellte Drehverbindung 6,1 zwischen Dorn 7 und einer Andruckvorrichtung, z.B. der Kolbenstange eines Vorschubzylinders 6, vorgesehen sein. Sind zwei gegeneinander wirkende Andruckeinrichtungen, beispielweise Druckzylinder 5 und 6 vorgesehen, so kann die aus Dorn 7, Werkstück 3 und Werkstückaufnahme 2 gebildete Einheit durch eine höhere Kraft des einen Vorschubzylinders mit einem geregelten Vorschub bewegt werden.It is also possible to have a rotary connection 6,1, not shown in detail, between the mandrel 7 and a pressure device, e.g. the piston rod of a feed cylinder 6 may be provided. If two counteracting pressure devices, for example pressure cylinders 5 and 6, are provided, the unit formed from mandrel 7, workpiece 3 and workpiece holder 2 can be moved by a higher force of a feed cylinder with a controlled feed.

Die Umformwerkzeuge bringen das Material des Werkstücks 3 durch den Anpressdruck zum Fließen, wobei radialer, tangentialer und/oder axialer Materialfluss auftreten kann. Der radiale Abstand der jeweils an Außen- und Innenkontur angreifenden Oberflächen der Umformwerkzeuge zueinander gibt die zu formende Wanddicke W des umgeformten Werkstückes 4 vor. Dabei ist der innere Durchmesser des umgeformten Werkstückes 4 in jeder axialen Position des Vorschubbereiches vorgegeben durch den Durchmesser des Dornes 7 in der jeweiligen axialen Position und den Dimensionen der an der inneren Kontur angreifenden Umformwerkzeuge 9, die sich auf dem Dorn 7 abstützen.The forming tools bring the material of the workpiece 3 by the contact pressure to flow, wherein radial, tangential and / or axial material flow can occur. The radial distance of each engaging outer and inner contour surfaces of the forming tools to each other determines the wall thickness W to be formed of the formed workpiece 4. In this case, the inner diameter of the formed workpiece 4 in each axial position of the feed region is predetermined by the diameter of the mandrel 7 in the respective axial position and the dimensions of the inner contour engaging forming tools 9, which are supported on the mandrel 7.

Der äußere Durchmesser des umgeformten Werkstückes der Wanddicke W wird durch die Position der an der äußeren Kontur angreifenden Umformwerkzeuge vorgegeben. Hierdurch ist es möglich, Werkstücke mit in axialer Richtung konstanter Wanddicke W zu fertigen, ebenso ist es möglich, Bereiche mit unterschiedlichen Wanddicken W zu fertigen. Durch eine entsprechende Formgebung des Dorns 7 ist es möglich, konische, konvexe oder konkave Übergänge zwischen Bereichen mit verschiedenen Durchmessern zu fertigen. Insbesondere ist es möglich, zylindrische Bereiche zu fertigen, die einen kleineren Durchmesser haben als der/die benachbarte(n) Bereich(e).The outer diameter of the formed workpiece of the wall thickness W is predetermined by the position of the forming tools acting on the outer contour. This makes it possible to produce workpieces with constant wall thickness W in the axial direction, it is also possible to produce regions with different wall thicknesses W. By a corresponding shaping of the mandrel 7, it is possible to produce conical, convex or concave transitions between regions with different diameters. In particular, it is possible to manufacture cylindrical portions having a smaller diameter than the adjacent portion (s).

Die gegebenenfalls vorgesehene Werkstückunterstützung 13 kann dabei von dem fließenden Material gegen einen, vorzugsweise einstellbaren, Gegendruck axial verschoben werden. Die äußeren Umformrollen 8 und 9 sowie die gegebenenfalls vorgesehene Werkstückunterstützung und/oder die Einheit aus Hauptspindelkasten 1, Spannfutter 2 und Fertigteil 4 sowie gegebenenfalls Dorn 7 können gegebenenfalls in eine Entladeposition verfahren werden.The optionally provided workpiece support 13 can be axially displaced from the flowing material against a, preferably adjustable, back pressure. The outer forming rollers 8 and 9 and the optionally provided workpiece support and / or the unit consisting of the main spindle box 1, chuck 2 and finished part 4 and optionally mandrel 7 can optionally be moved into an unloading position.

Dabei sehen besonders bevorzugte Ausführungsformen vor, dass eine verschiebbare Werkstückaufnahme 2 vorgesehen ist. Ebenso kann eine angetriebene Werkstückaufnahme 2 vorgesehen sein. Es kann die Anzahl der an der äußeren Kontur des Werkstücks 3 angreifenden Umformwerkzeuge 8 mit der Anzahl der an der inneren Kontur des Werkstücks 3 angreifenden Umformwerkzeuge 9 übereinstimmen. Es können jeweils ein an der jeweiligen Kontur angreifendes Umformwerkzeug 8 und 9 paarig an Innen- und Außenkontur des Werkstücks 3 angreifen. Vorteilhafterweise können die an der äußeren Kontur des Werkstücks 3 angreifenden Umformwerkzeuge 8 einer vorgegebenen Kontur folgen. Vorteilhafterweise entspricht die vorgegebene Kontur der des umgeformten Werkstücks 4. Es kann mindestens ein Umformwerkzeug als Umformrolle ausgeführt sein. Vorteilhafterweise sind Werkstückaufnahme 2 und mindestens ein Umformwerkzeug 8 und/oder 9 axial gegeneinander verschiebbar. Es können die Oberflächen, über die die Umformwerkzeuge 8 an der Außenkontur des Werkstücks 3 angreifen, und die Oberflächen, über die die Umformwerkzeuge 9 an der Innenkontur des Werkstücks 3 angreifen, unterschiedlich profiliert sein. Vorteilhafterweise ist eine axial verschiebbare Werkstückunterstützung 13 vorgesehen. Es kann eine Andruckvorrichtung 14 zum Verspannen einer Werkstückunterstützung 13 gegen das Werkstück 3 vorgesehen sein. Vorteilhafterweise ist eine um die Rotationsachse X drehbare Lagerung 15 einer Werkstückunterstützung 13 vorgesehen. In this case, particularly preferred embodiments provide that a displaceable workpiece holder 2 is provided. Likewise, a driven workpiece holder 2 may be provided. The number of forming tools 8 acting on the outer contour of the workpiece 3 can match the number of forming tools 9 acting on the inner contour of the workpiece 3. In each case, a forming tool 8 and 9 acting on the respective contour can engage in pairs on the inner and outer contours of the workpiece 3. Advantageously, the forming tools 8 acting on the outer contour of the workpiece 3 can follow a predetermined contour. Advantageously, the predetermined contour corresponds to that of the formed workpiece 4. At least one forming tool can be designed as a forming roller. Advantageously, the workpiece holder 2 and at least one forming tool 8 and / or 9 axially against each other. The surfaces over which the forming tools 8 engage the outer contour of the workpiece 3 and the surfaces via which the forming tools 9 engage the inner contour of the workpiece 3 can be profiled differently. Advantageously, an axially displaceable workpiece support 13 is provided. There may be provided a pressure device 14 for clamping a workpiece support 13 against the workpiece 3. Advantageously, a rotatable about the axis of rotation X storage 15 a workpiece support 13 is provided.

Claims (16)

  1. Device for for forming a workpiece (3) having at least one forming tool (8) which rotates relative to this workpiece and engages on the exterior contour of the workpiece, wherein at least one further forming tool (9) is provided which rotates relative to the workpiece (3) and engages on the interior contour of the workpiece (3),
    characterised in that the further forming tool (9) is supported on the exterior contour of a rotatable mandrel (7), which is provided parallel to the longitudinal axis (x) of the device, and is mounted on a holder (10) at a variable distance from the rotational axis (x) through swivel movement or in some other way, wherein the forming tool (9) is configured in a way which allows it to roll or slide along on the mandrel (7) and process the workpiece (3) during forming.
  2. Device according to claim 1
    characterised in that the exterior contour of the mandrel (7) corresponds to the pre-set interior contour of the formed workpiece (4).
  3. Device according to one of the preceding claims characterised in that at least one forming tool (9) engaging on the interior contour is mounted for swivel movement on a holder (10).
  4. Device according to one of the preceding claims characterised in that the mandrel (7) is mounted for rotatable movement about the rotational axis (x).
  5. Device according to one of the preceding claims characterised in that the mandrel (7) is displaceable relative to the workpiece (3) along the rotational axis (x).
  6. Device according to one of the preceding claims characterised in that the mandrel (7) is a functional constituent part of an assembly for tensioning the workpiece (3) with a workpiece holder (2).
  7. Device according to one of the preceding claims characterised in that the contours of the formed workpiece (4) pre-set by the contour of the mandrel (7) provide a uniform wall thickness (W) or a number of different wall thicknesses (W) of the formed workpiece (4) along the rotational axis (x).
  8. Device according to one of the preceding claims characterised in that the contours of the formed workpiece (4) pre-set by the contour of the mandrel (7) have one or a number of transition areas which is/are formed convex, concave and/or conical and/or have at least one cylindrical region which has a smaller diameter than an adjoining area.
  9. Method for forming a workpiece (3) in which at least one forming tool (8) which rotates relative to this workpiece (3) engages on the exterior contour of the workpiece (3), wherein at least one further forming tool (9) which rotates relative to the workpiece (3) engages on the interior contour of the workpiece (3),
    characterised in that the further forming tool (9) is supported on the exterior contour of a rotatable mandrel (7) provided parallel to the longitudinal axis (x) of the device, and is guided by a holder (10) at a variable distance relative to the rotational axis (x), wherein the forming tool (9) during forming processes the workpiece (3) and rolls or slides along on the mandrel (7).
  10. Method according to one of claim 9 characterised in that for the formed workpiece (4) an interior contour is provided which corresponds to the exterior contour of the mandrel (7).
  11. Method according to claim 9 or 10 characterised in that at least one forming tool (9) engaging on the interior contour is guided by a holder (10) at variable distance relative to the rotational axis (x).
  12. Method according to one of claims 9 to 11 characterised in that the mandrel (7) rotates about the rotational axis (x).
  13. Method according to one of claims 9 to 12 characterised in that the mandrel (7) is displaced relative to the workpiece (3) along the rotational axis (x).
  14. Method according to one of claims 9 to 13 characterised in that the workpiece (3) is tensioned by the mandrel (7) with the workpiece holder (2).
  15. Method according to one of claims 9 to 14 characterised in that for the formed workpiece (4) contours with uniform wall thicknesses (W) and/or contours with a number of different wall thicknesses (W) are pre-set along the rotational axis (x) by the contour of the mandrel (7).
  16. Method according to one of claims 9 to 15 characterised in that for the formed workpiece (4) contours with one or a number of transition areas which are formed convex, concave and/or conical and/or contours having at least one cylindrical area which has a smaller diameter than an adjoining area are predetermined by the contour of the mandrel (7).
EP09013252.3A 2009-10-21 2009-10-21 Method and device for forming workpieces Active EP2314395B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES09013252.3T ES2388122T5 (en) 2009-10-21 2009-10-21 Device and procedure for shaping work pieces
EP09013252.3A EP2314395B2 (en) 2009-10-21 2009-10-21 Method and device for forming workpieces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09013252.3A EP2314395B2 (en) 2009-10-21 2009-10-21 Method and device for forming workpieces

Publications (3)

Publication Number Publication Date
EP2314395A1 EP2314395A1 (en) 2011-04-27
EP2314395B1 EP2314395B1 (en) 2012-05-16
EP2314395B2 true EP2314395B2 (en) 2016-11-02

Family

ID=43586998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09013252.3A Active EP2314395B2 (en) 2009-10-21 2009-10-21 Method and device for forming workpieces

Country Status (2)

Country Link
EP (1) EP2314395B2 (en)
ES (1) ES2388122T5 (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1528832A (en) † 1922-10-05 1925-03-10 Kellogg M W Co Apparatus for making seamless tubes
US1610593A (en) † 1922-06-24 1926-12-14 Roeckner Martin Manufacture of seamless pipes
US2305794A (en) † 1939-03-23 1942-12-22 Roeckner Martin Device for adjusting inner rolls in rolling mills for rolling pipes
US3287951A (en) † 1966-03-04 1966-11-29 Ladish Co Art of roll-reducing ring wall thickness
DE1602332A1 (en) † 1966-05-05 1970-07-16 Rotary Profile Anstalt Device for the treatment of tubular workpieces
US4693105A (en) † 1983-10-11 1987-09-15 Lee Jr Roy Method of and apparatus for straightening, swaging, and threading a pipe
US6457532B1 (en) † 1998-12-22 2002-10-01 Weatherford/Lamb, Inc. Procedures and equipment for profiling and jointing of pipes
DE102007002228A1 (en) † 2007-01-10 2008-07-31 Benteler Automobiltechnik Gmbh Method for preparing pipes with internal profiles, involves surrounding pipe from outside, by template, where rotating tool presses on pipe wall for producing different wall thickness wall areas in longitudinal direction of pipe
EP2210682A1 (en) † 2009-07-09 2010-07-28 Leifeld Metal Spinning GmbH Method and apparatus for spinning

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1383194A (en) * 1970-10-08 1975-02-05 Platt International Ltd Open-end spinning apparatus
DE3545506A1 (en) * 1985-12-20 1987-07-02 Man Technologie Gmbh TOOL FOR ROLLING HOLLOW CYLINDRICAL WORKPIECES
US6442988B1 (en) * 2001-05-01 2002-09-03 Alcan International Limited Methods of spin forming initially cylindrical containers and the like
JP4354133B2 (en) * 2001-08-10 2009-10-28 カヤバ工業株式会社 Cylinder processing method
DE50105836D1 (en) * 2001-08-10 2005-05-12 Leifeld Metal Spinning Gmbh Process for the preparation of a catalytic converter

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1610593A (en) † 1922-06-24 1926-12-14 Roeckner Martin Manufacture of seamless pipes
US1528832A (en) † 1922-10-05 1925-03-10 Kellogg M W Co Apparatus for making seamless tubes
US2305794A (en) † 1939-03-23 1942-12-22 Roeckner Martin Device for adjusting inner rolls in rolling mills for rolling pipes
US3287951A (en) † 1966-03-04 1966-11-29 Ladish Co Art of roll-reducing ring wall thickness
DE1602332A1 (en) † 1966-05-05 1970-07-16 Rotary Profile Anstalt Device for the treatment of tubular workpieces
US4693105A (en) † 1983-10-11 1987-09-15 Lee Jr Roy Method of and apparatus for straightening, swaging, and threading a pipe
US6457532B1 (en) † 1998-12-22 2002-10-01 Weatherford/Lamb, Inc. Procedures and equipment for profiling and jointing of pipes
DE102007002228A1 (en) † 2007-01-10 2008-07-31 Benteler Automobiltechnik Gmbh Method for preparing pipes with internal profiles, involves surrounding pipe from outside, by template, where rotating tool presses on pipe wall for producing different wall thickness wall areas in longitudinal direction of pipe
EP2210682A1 (en) † 2009-07-09 2010-07-28 Leifeld Metal Spinning GmbH Method and apparatus for spinning

Also Published As

Publication number Publication date
ES2388122T3 (en) 2012-10-09
ES2388122T5 (en) 2017-05-05
EP2314395A1 (en) 2011-04-27
EP2314395B1 (en) 2012-05-16

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