EP0688617B1 - Method and device for rolling of hollow work pieces - Google Patents

Method and device for rolling of hollow work pieces Download PDF

Info

Publication number
EP0688617B1
EP0688617B1 EP94109860A EP94109860A EP0688617B1 EP 0688617 B1 EP0688617 B1 EP 0688617B1 EP 94109860 A EP94109860 A EP 94109860A EP 94109860 A EP94109860 A EP 94109860A EP 0688617 B1 EP0688617 B1 EP 0688617B1
Authority
EP
European Patent Office
Prior art keywords
workpiece
rolling
impact
roller
longitudinal axis
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
EP94109860A
Other languages
German (de)
French (fr)
Other versions
EP0688617A1 (en
Inventor
Hans Krapfenbauer
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.)
Ernst Grob AG
Original Assignee
Ernst Grob AG
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
Application filed by Ernst Grob AG filed Critical Ernst Grob AG
Priority to AT94109860T priority Critical patent/ATE155717T1/en
Priority to DE59403464T priority patent/DE59403464D1/en
Priority to EP94109860A priority patent/EP0688617B1/en
Priority to ES94109860T priority patent/ES2105428T3/en
Priority to JP15812395A priority patent/JP3606949B2/en
Publication of EP0688617A1 publication Critical patent/EP0688617A1/en
Priority to US08/769,847 priority patent/US5765419A/en
Application granted granted Critical
Publication of EP0688617B1 publication Critical patent/EP0688617B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B21H5/00—Making gear wheels, racks, spline shafts or worms
    • B21H5/02—Making gear wheels, racks, spline shafts or worms with cylindrical outline, e.g. by means of die rolls
    • B21H5/025—Internally geared wheels
    • 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
    • B21D15/00—Corrugating tubes
    • B21D15/02—Corrugating tubes longitudinally
    • 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
    • B21H1/18—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • 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
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/08—Making helical bodies or bodies having parts of helical shape internal screw-threads

Definitions

  • the present invention relates to a method for impact rolling of full or hollow cylindrical workpieces, which receive a feed along their longitudinal axis, with at least one impact roller mounted drivably in a rotating roller head being carried out in abrupt individual rolling processes on predetermined zones of the workpiece in a sequence coordinated with the workpiece feed and an apparatus for performing this method.
  • pressure rolling is known (example DE 4218092), in which, in contrast to pure pressing, the wall thickness of the workpiece is reduced in a predetermined manner at the same time as the shape is changed.
  • the pressing and rolling are effected by a roller, which is pressed onto the workpiece and causes the forming.
  • the roller is constantly in contact with the workpiece. Because the contact pressure of the roller is practically static on the workpiece, very large forces are required, which leads to correspondingly heavy-dimensioned machines of very complex construction if the workpieces produced with them are to meet the requirements.
  • the object of the present invention was to find a method analogous to the rough method described, which is also suitable for workpieces with a circumferential, protruding shoulder or gradations.
  • the method can be applied to rotationally symmetrical workpieces in that the workpiece is preferably rotated about its longitudinal axis.
  • a system according to claims 9 to 10 is preferably used to carry out the method according to the invention.
  • the claimed method is particularly suitable for hollow bodies with at least partial internal teeth. However, it is also conceivable to use the method for solid bodies or hollow bodies without internal teeth.
  • FIG. 1 the longitudinal and cross-section of a conventional impact rolling machine in the area of the actual rolling process is shown schematically.
  • a cylindrical workpiece 1 here for example a hollow cylinder, is fed to the area of the roller heads 2 and 3 by means of a device, not shown.
  • the 2 on the roller heads. 3 attached impact rollers 4 and 5 perform abrupt single rolling operations on the surface of the workpiece 1 during the rotation of the roller heads 2 and 3.
  • the material of the workpiece 1 is cold-formed, for example the inside of the workpiece 1 thereby receives the contour of an internal die 6.
  • internal toothing of hollow bodies can be produced quickly and with great precision.
  • the method can also be used for reducing the cross section of the workpiece 1, the material flowing primarily in the longitudinal direction.
  • the corresponding devices are the axes 2 'respectively. 3 'of the rolling heads 2, 3 are arranged substantially perpendicular to the longitudinal axis 1' of the workpiece. This is intended to achieve an impact effect which is essentially parallel to the longitudinal axis 1 'of the workpiece.
  • the workpiece 1 can only be fed in the direction of arrow V until the shoulder 1 '' in the areas 7 and 8 of the rotating beater rollers 4 and 4 respectively. 5 arrives.
  • the axes 2 ′ and 3 ′ of the roller heads 2 and 3 are arranged parallel to the longitudinal axis 1 ′ of the workpiece, as can be seen in FIG. 2.
  • both diametrically opposed roller heads 2 and 3 are now driven in the same direction of rotation n 1 and n 2 .
  • this results in a uniform load on the workpiece longitudinal axis 1 'by the parallel components of the oppositely directed force or. Cancel stroke vectors S 1 and S 2 and only the resulting torque has to be absorbed by workpiece 1.
  • the drive of the two roller heads 2 and 3 is simplified, which must be coupled synchronously with one another so that the opposing impact rollers 4 and 5 are used on the workpiece 1 at the same time. This can now be done using a simple toothed belt, for example.
  • the method according to the invention is suitable for all fields of application known for impact rolling.
  • it is advantageous for the production of internal gears for hollow parts.
  • the roller head speed is preferably coordinated with the feed of the workpiece in such a way that only the impact rolling processes necessary for achieving the internal toothing are applied to the inner surface of the workpiece.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Forging (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Heat Treatment Of Steel (AREA)
  • Laminated Bodies (AREA)

Abstract

The method concerns impact rolling solid or hollow cylindrical components (1) which are fed in the direction of their longitudinal axis (1'). At least one impact roll (4, 5) in an external rotating roll head (2, 3) performs a specified sequence of individual impact-like rolling operations on predetermined zones of the component. The method is characterised by the fact that the individual operations are performed in the transverse direction (S_1, S_2) relative to the component. The appts. is characterised by the presence of at least one roll head which rotates about axes (2', 3') substantially parallel to the longitudinal axis (1') of the component. <IMAGE>

Description

Die vorliegende Erfindung betrifft ein Verfahren zum Schlagwalzen von vollen oder hohlen zylindrischen Werkstücken, welche einen Vorschub entlang ihrer Längsachse erhalten, wobei von aussen wenigstens eine in einem umlaufenden Walzkopf antreibbar gelagerte Schlagwalze in auf den Werkstückvorschub abgestimmter Folge schlagartige Einzelwalzvorgange auf vorbestimmte Zonen des Werkstückes ausgeführt werden sowie eine Vorrichtung zur Durchführung dieses Verfahrens.The present invention relates to a method for impact rolling of full or hollow cylindrical workpieces, which receive a feed along their longitudinal axis, with at least one impact roller mounted drivably in a rotating roller head being carried out in abrupt individual rolling processes on predetermined zones of the workpiece in a sequence coordinated with the workpiece feed and an apparatus for performing this method.

Für das Walzen und Drücken beispielsweise von Hohlteilen mit wenigstens teilweiser Innenverzahnung, wobei von einer Ronde, einem Topf oder einem Rohrkörper ausgegangen wird, sind im wesentlichen zwei Kaltumformverfahren bekannt.For the rolling and pressing of, for example, hollow parts with at least partial internal toothing, starting from a round blank, a pot or a tubular body, essentially two cold forming processes are known.

Einerseits ist das Drückwalzen bekannt (Bsp. DE 4218092), bei welchem im Gegensatz zum reinen Drücken die Wandstärke des Werkstückes gleichzeitig mit einem Verändern der Form vorbestimmt reduziert wird. Das Drücken und Walzen werden dabei durch eine Rolle bewirkt, welche auf das Werkstück gedrückt wird und die Umformung bewirkt. Die Rolle ist dabei ständig in Kontakt mit dem Werkstück. Dadurch, dass die Anpresskraft der Rolle damit praktisch statisch auf das Werkstück wirkt, werden sehr grosse Kräfte benötigt, was zu entsprechend schwer dimensionierten Maschinen von sehr aufwendiger Konstruktion führt, wenn die damit produzierten Werkstücke den gestellten Anforderungen genügen sollen.On the one hand, pressure rolling is known (example DE 4218092), in which, in contrast to pure pressing, the wall thickness of the workpiece is reduced in a predetermined manner at the same time as the shape is changed. The pressing and rolling are effected by a roller, which is pressed onto the workpiece and causes the forming. The roller is constantly in contact with the workpiece. Because the contact pressure of the roller is practically static on the workpiece, very large forces are required, which leads to correspondingly heavy-dimensioned machines of very complex construction if the workpieces produced with them are to meet the requirements.

Ein weiteres Kaltumformverfahren, welches insbesondere diese Nachteile ausräumt, ist das Schlagwalzen, auch als Grob-Verfahren bekannt (Bsp. CH 658006). Bei diesem Verfahren wird im Gegensatz zum obig beschriebenen Drückwalzen die Kraft nicht statisch, sondern dynamisch, in Form von Schlägen, auf das Werkstück aufgebracht. Hierfür sind auf einem umlaufenden Walzkopf angeordnete Walzen vorgesehen, welche in rascher Folge schlagartige Einzelwalzvorgänge auf die Werkstückoberfläche ausführen. Diese Einzelwalzvorgänge werden hauptsächlich in Längsrichtung des Werkstückes, d.h. hauptsächlich in Richtung der Werkstückachse, ausgeführt. Dadurch können einerseits die Kräfte geringer gehalten werden als beim obig beschriebenen Drückwalzen und andererseits können dadurch die Maschinen zur Erzielung hoher Werkstückgenauigkeit auch leichter dimensioniert werden. Durch die beschriebene Walzrichtung beim Grob-Verfahren besteht nun aber der Nachteil, dass, bedingt durch die Anordnung des Walzkopfes, um das Werkstück in achsialer Richtung des Werkstükkes ein freier Raum für die Planetenbewegung der einzelnen Walzen benötigt wird. Dadurch kann das Verfahren nicht angewendet werden, wenn beispielsweise Werkstücke mit einer umlaufenden, vorstehenden Schulter oder mit markanten Abstufungen bearbeitet werden müssen.Another cold forming process, which in particular overcomes these disadvantages, is impact rolling, also known as the roughing process (example CH 658006). This process is in contrast to the pressure rolling described above the force is not applied statically, but dynamically, in the form of blows to the workpiece. For this purpose, rollers are provided on a rotating roller head, which perform abrupt single rolling operations on the workpiece surface in rapid succession. These single rolling processes are mainly carried out in the longitudinal direction of the workpiece, ie mainly in the direction of the workpiece axis. On the one hand, this enables the forces to be kept lower than in the case of the pressure rolling described above, and on the other hand the machines can also be dimensioned more easily in order to achieve high workpiece accuracy. Due to the rolling direction described in the coarse method, there is now the disadvantage that, due to the arrangement of the roller head, a free space is required for the planetary movement of the individual rollers around the workpiece in the axial direction of the workpiece. As a result, the method cannot be used if, for example, workpieces with a circumferential, protruding shoulder or with distinctive gradations have to be processed.

Die Aufgabe der vorliegenden Erfindung bestand nun darin, ein Verfahren analog zum beschriebenen Grob-Verfahren zu finden, welches auch für Werkstücke mit einer umlaufenden, vorstehenden Schulter oder Abstufungen geeignet ist.The object of the present invention was to find a method analogous to the rough method described, which is also suitable for workpieces with a circumferential, protruding shoulder or gradations.

Zur Lösung der Aufgabe wird erfindungsgemäss das Verfahren nach Anspruch 1 vorgeschlagen.To achieve the object, the method according to claim 1 is proposed according to the invention.

Es hat sich gezeigt, dass durch die Änderung der Schlagrichtung der Walzen in radialer Umfangsrichtung des Werkstückes die bekannten Vorteile des schlagenden Verfahrens beibehalten werden, dadurch aber die Achse des Walzkopfes nun im wesentlichen parallel zur Werkstückachse angeordnet werden kann. Damit wird nun der Raum für die Planetenbewegung der Schlagwalzen nicht mehr in achsparalleler Richtung beansprucht, wodurch der Schlagwalzvorgang bis dicht an eine nach aussen abstehende Werkstückschulter durchgeführt werden kann. Ebenso stellt die verfahrensgemässe Formung von Werkstücken mit markanten Abstufungen kein Problem dar. Damit können nun vorteilhafterweise auch derartige Werkstücke durch das Schlagwalzverfahren bearbeitet werden.It has been shown that the known advantages of the striking method are retained by changing the direction of impact of the rollers in the radial circumferential direction of the workpiece, but the axis of the roller head can now be arranged essentially parallel to the axis of the workpiece. This means that the space for the planetary movement of the beater rollers is no longer in axially parallel direction stressed, whereby the impact rolling process can be carried out up to a projecting shoulder of the workpiece. Likewise, the process-related shaping of workpieces with distinctive gradations does not pose a problem. This means that workpieces of this type can now advantageously also be processed by the impact rolling method.

Bevorzugte Ausführungsformen des Verfahrens ergeben sich aus den abhängigen Ansprüchen 2 bis 8.Preferred embodiments of the method result from the dependent claims 2 to 8.

Das Verfahren kann auf rotationssymmetrische Werkstücke angewandt werden, indem das Werkstück vorzugsweise um seine Längsachse rotiert wird. Es ist aber auch denkbar, dass Verfahren auf andere Werkstücke anzuwenden, bei welchem nicht auf dem gesamten Umfang der Schlagwalzvorgang ausgeführt werden muss, beispielsweise beim Erstellen von segmentartig abgeflachten Werkstücken.The method can be applied to rotationally symmetrical workpieces in that the workpiece is preferably rotated about its longitudinal axis. However, it is also conceivable to apply methods to other workpieces in which the impact rolling process does not have to be carried out over the entire circumference, for example when creating segment-like flattened workpieces.

Bevorzugterweise wird eine Anlage nach den Ansprüchen 9 bis 10 zur Durchführung des erfindungsgemässen Verfahrens verwendet.A system according to claims 9 to 10 is preferably used to carry out the method according to the invention.

Das beanspruchte Verfahren eignet sich insbesondere für Hohlkörper mit wenigstens teilweiser Innenverzahnung. Es ist aber auch denkbar, dass Verfahren für Vollkörper oder Hohlkörper ohne Innenverzahnung anzuwenden.The claimed method is particularly suitable for hollow bodies with at least partial internal teeth. However, it is also conceivable to use the method for solid bodies or hollow bodies without internal teeth.

Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand von Zeichnungen noch näher erläutert. Es zeigen

  • Fig. 1 schematisch den Längs- und Querschnitt durch eine herkömmliche Schlagwalzvorrichtung;
  • Fig. 2 schematisch den Längs- und Querschnitt durch eine erfindungsgemässe Schlagwalzvorrichtung.
An embodiment of the invention is explained in more detail below with reference to drawings. Show it
  • Figure 1 shows schematically the longitudinal and cross section through a conventional impact rolling device.
  • Fig. 2 shows schematically the longitudinal and cross section through an impact rolling device according to the invention.

In Figur 1 ist schematisch der Längs- und Querschnitt einer herkömmlichen Schlagwalzmaschine im Bereich des eigentlichen Walzvorganges gezeigt. Ein zylindrisches Werkstück 1, hier beispielsweise ein Hohlzylinder, wird mittels einer nicht dargestellten Einrichtung dem Bereich der Walzköpfe 2 und 3 zugeführt. Die an den Walzköpfen 2 resp. 3 angebrachten Schlagwalzen 4 und 5 führen bei der Rotation der Walzköpfe 2 und 3 schlagartige Einzelwalzvorgänge auf die Oberfläche des Werkstückes 1 aus. Dabei wird das Material des Werkstückes 1 kalt umgeformt, beispielsweise erhalt dadurch die Innenseite des Werkstückes 1 die Kontur einer innenliegenden Matrize 6. Beispielsweise können damit Innenverzahnungen von Hohlkörpern schnell und mit grosser Präzision erzeugt werden. Das Verfahren kann auch für die Reduktion des Querschnitts des Werkstückes 1 angewandt werden, wobei das Material vor allem in Längsrichtung fliesst.In Figure 1, the longitudinal and cross-section of a conventional impact rolling machine in the area of the actual rolling process is shown schematically. A cylindrical workpiece 1, here for example a hollow cylinder, is fed to the area of the roller heads 2 and 3 by means of a device, not shown. The 2 on the roller heads. 3 attached impact rollers 4 and 5 perform abrupt single rolling operations on the surface of the workpiece 1 during the rotation of the roller heads 2 and 3. The material of the workpiece 1 is cold-formed, for example the inside of the workpiece 1 thereby receives the contour of an internal die 6. For example, internal toothing of hollow bodies can be produced quickly and with great precision. The method can also be used for reducing the cross section of the workpiece 1, the material flowing primarily in the longitudinal direction.

Normalerweise werden an einem Walzkopf 2 resp. 3 mehrere Schlagwalzen 4, resp. 5 angebracht, um eine schnelle Folge von Einzelwalzvorgängen bei mittleren Drehzahlen zu ermöglichen.Normally 2 resp. 3 several impact rollers 4, respectively. 5 attached to allow a rapid sequence of single rolling operations at medium speeds.

Bei dem bekannten Verfahren resp. den entsprechenden Vorrichtungen sind die Achsen 2' resp. 3' der Walzköpfe 2,3 im wesentlichen senkrecht zur Werkstücklängsachse 1' angeordnet. Damit soll eine im wesentlichen parallel zur Werkstücklängsachse 1' gerichtete Schlagwirkung erzielt werden. Dies hat nun den Nachteil, dass der Schlagwalzvorgang im besonderen bei einem Werkstück 1 mit einer Schulter 1'' nicht bis dicht an den Bereich der Schulter 1'' ausgeführt werden kann.In the known method, respectively. the corresponding devices are the axes 2 'respectively. 3 'of the rolling heads 2, 3 are arranged substantially perpendicular to the longitudinal axis 1' of the workpiece. This is intended to achieve an impact effect which is essentially parallel to the longitudinal axis 1 'of the workpiece. This now has the disadvantage that the impact rolling process, particularly in the case of a workpiece 1 with a shoulder 1 ″, cannot be carried out as close as possible to the region of the shoulder 1 ″.

Das Werkstück 1 kann nur soweit in Pfeilrichtung V zugeführt werden, bis die Schulter 1'' in den Bereich 7 und 8 der umlaufenden Schlagwalzen 4 resp. 5 gelangt.The workpiece 1 can only be fed in the direction of arrow V until the shoulder 1 '' in the areas 7 and 8 of the rotating beater rollers 4 and 4 respectively. 5 arrives.

Um nun einen Schlagwalzvorgang bei einem Werkstück 1 mit einer Schulter 1'' bis dicht an diese heran ausführen zu können, werden erfindungsgemäss die Achsen 2' und 3' der Walzköpfe 2 und 3 parallel zur Werkstücklängsachse 1' angeordnet, wie aus Figur 2 ersichtlich.In order to be able to carry out an impact rolling process on a workpiece 1 with a shoulder 1 ″ close to it, the axes 2 ′ and 3 ′ of the roller heads 2 and 3 are arranged parallel to the longitudinal axis 1 ′ of the workpiece, as can be seen in FIG. 2.

Damit kann nun das Werkstück 1 wesentlich näher in Pfeilrichtung V gegen die Walzköpfe 2 und 3 herangeführt werden als beim bekannten Verfahren resp. den bekannten Vorrichtungen. Abgesehen davon wird es durch die Anwendung des erfindungsgemässen Verfahrens möglich, markante Abstufungen 1''' am Werkstück zu walzen, was beim herkömmlichen Schlagwalzen mit bezüglich der Werkstückachse senkrecht stehenden Walzachsen unmöglich ist. Es hat sich überraschenderweise gezeigt, dass sich die nun senkrecht zur Werkstücklängsachse 1' ausgeführten Walzvorgänge in gleicher Weise als Kaltumformung eignen wie die bekannten, in parallel zur Werkstücklängsachse 1' ausgeführten Walzvorgänge.So that the workpiece 1 can now be brought much closer in the direction of arrow V against the roller heads 2 and 3 than in the known method, respectively. the known devices. Apart from this, the use of the method according to the invention makes it possible to roll striking gradations 1 '' 'on the workpiece, which is impossible in conventional impact rolling with roller axes perpendicular to the workpiece axis. Surprisingly, it has been shown that the rolling processes now carried out perpendicular to the workpiece longitudinal axis 1 'are suitable as cold forming in the same way as the known rolling processes carried out parallel to the workpiece longitudinal axis 1'.

Im übrigen erweist es sich als vorteilhaft, dass beide diametral gegenüberliegenden Walzköpfe 2 und 3 nun im gleichen Drehsinn n1 und n2 angetrieben werden. Einerseits ergibt diese eine gleichmässige Belastung auf die Werkstücklängsachse 1', indem sich die parallelen Komponenten der entgegengesetzt gerichteten Kraft- resp. Schlagvektoren S1 und S2 aufheben und lediglich das resultierende Drehmoment vom Werkstück 1 aufgenommen werden muss. Andererseits wird auch der Antrieb der beiden Walzköpfe 2 und 3 vereinfacht, welche synchron miteinander gekoppelt sein müssen, damit jeweils die einander gegenüberliegenden Schlagwalzen 4 und 5 gleichzeitig zu Einsatz auf dem Werkstück 1 kommen. Dies kann nun beispielsweise mittels eines einfachen Zahnriemens erfolgen.Moreover, it proves to be advantageous that both diametrically opposed roller heads 2 and 3 are now driven in the same direction of rotation n 1 and n 2 . On the one hand, this results in a uniform load on the workpiece longitudinal axis 1 'by the parallel components of the oppositely directed force or. Cancel stroke vectors S 1 and S 2 and only the resulting torque has to be absorbed by workpiece 1. On the other hand, the drive of the two roller heads 2 and 3 is simplified, which must be coupled synchronously with one another so that the opposing impact rollers 4 and 5 are used on the workpiece 1 at the same time. This can now be done using a simple toothed belt, for example.

Das erfindungsgemässe Verfahren eignet sich für alle für das Schlagwalzen bekannte Einsatzgebiete. Insbesondere ist es vorteilhaft für die Herstellung von Innenverzahnungen bei Hohlteilen. Dabei wird vorzugsweise die Walzkopfdrehzahl mit dem Vorschub des Werkstückes derart abgestimmt, dass nur gerade die für die Erzielung der Innenverzahnung notwendigen Schlagwalzvorgänge auf die Innenoberfläche des Werkstückes appliziert werden.The method according to the invention is suitable for all fields of application known for impact rolling. In particular, it is advantageous for the production of internal gears for hollow parts. In this case, the roller head speed is preferably coordinated with the feed of the workpiece in such a way that only the impact rolling processes necessary for achieving the internal toothing are applied to the inner surface of the workpiece.

Claims (10)

  1. A method of impact rolling solid or hollow cylindrical workpieces (1) which are fed along their longitudinal axis (1'), wherein abrupt individual rolling operations are carried out from outside on predetermined zones of the workpiece (1) in a sequence synchronised with the workpiece feed, (by?) at least one impact roller (4;5) mounted drivably in a revolving roller head (2;3), characterised in that the individual rolling operations are carried out in a transverse direction (S1, S2) to the workpiece (1).
  2. The method of claim 1, characterised in that the zones on which individual rolling operations are carried out partly overlap each other.
  3. The method of claim 1 or 2, characterised in that a plurality of rolling operations are always carried out simultaneously at the periphery of the workpiece (1), the locations for the rolling operations on the workpiece (1) being planned so that the rolling forces are balanced.
  4. The method of any of claims 1 to 3, characterised in that at least two rolling operations are always carried out simultaneously at diametrically opposed sides of the workpiece (1).
  5. The method of any of claims 1 to 4, characterised in that all the roller heads (2,3) are operated in the same revolving direction, in such a way that the impact vectors (S1, S2) of the rollers on the workpiece surface have the same rotary direction relative to the longitudinal axis (1') of the workpiece.
  6. The method of any of claims 1 to 5, characterised in that the speed of the roller heads is synchronised with the workpiece feed in a predetermined manner.
  7. The method of any of claims 1 to 6, characterised in that the workpiece (1) is rotated about its longitudinal axis (1') during the rolling operation, preferably in a predetermined relationship to the revolving speed of the roller heads.
  8. The method of any of claims 1 to 7 for a hollow workpiece (1), characterised in that a mould (6) is inserted on the inside of the workpiece (1), and the shape of the mould, preferably toothing, is formed on the inside of the workpiece (1) by the rolling operations, by cold forming.
  9. Apparatus for carrying out the method of any of claims 1 to 8, characterised in that it includes at least one roller head (2;3) with impact rollers (4;5) thereon, arranged on a circular track running round it, the axis of rotation (2'; 3') of the head being substantially parallel with the longitudinal axis (1') of the workpiece.
  10. The apparatus of claim 9, characterised in that two or more roller heads (2,3) are provided, their arrangement giving an equilibrium of forces in respect of the rolling forces (S1, S2) exerted on the workpiece (1).
EP94109860A 1994-06-25 1994-06-25 Method and device for rolling of hollow work pieces Expired - Lifetime EP0688617B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT94109860T ATE155717T1 (en) 1994-06-25 1994-06-25 METHOD AND DEVICE FOR ROLLING HOLLOW PARTS
DE59403464T DE59403464D1 (en) 1994-06-25 1994-06-25 Method and device for rolling hollow parts
EP94109860A EP0688617B1 (en) 1994-06-25 1994-06-25 Method and device for rolling of hollow work pieces
ES94109860T ES2105428T3 (en) 1994-06-25 1994-06-25 PROCEDURE AND DEVICE FOR LAMINATING HOLLOW PIECES.
JP15812395A JP3606949B2 (en) 1994-06-25 1995-06-23 Method and apparatus for rolling solid or hollow members
US08/769,847 US5765419A (en) 1994-06-25 1996-12-19 Method and apparatus for a rolling of hollow articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94109860A EP0688617B1 (en) 1994-06-25 1994-06-25 Method and device for rolling of hollow work pieces

Publications (2)

Publication Number Publication Date
EP0688617A1 EP0688617A1 (en) 1995-12-27
EP0688617B1 true EP0688617B1 (en) 1997-07-23

Family

ID=8216052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94109860A Expired - Lifetime EP0688617B1 (en) 1994-06-25 1994-06-25 Method and device for rolling of hollow work pieces

Country Status (5)

Country Link
EP (1) EP0688617B1 (en)
JP (1) JP3606949B2 (en)
AT (1) ATE155717T1 (en)
DE (1) DE59403464D1 (en)
ES (1) ES2105428T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013159241A1 (en) 2012-04-25 2013-10-31 Ernst Grob Ag Device and method for producing thick-walled ring gears provided with internally toothed sections for driving pinions
WO2019158656A1 (en) 2018-02-16 2019-08-22 Ernst Grob Ag Thin-walled ring gears having inner and outer toothing, and a device and method for producing same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2193316T3 (en) * 1997-11-24 2003-11-01 Grob Ernst Fa PROCEDURE AND DEVICE FOR COLD TRAINING OF HOLLOW PARTS.
EP1713600B1 (en) 2004-02-06 2016-10-12 Ernst Grob Ag Device and method for producing tooth-like profiled sections on workpieces
DE102005028828B3 (en) * 2005-06-15 2006-12-21 Getrag Synchrontechnik Gmbh Method and device for producing metal rings
CH718706A1 (en) * 2021-06-04 2022-12-15 Grob Ernst Fa Device and method for cold-forming profiling of workpieces.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR468918A (en) * 1913-05-06 1914-07-20 Emile Coulon Method and apparatus for manufacturing round tubes or pipes reinforced at their ends
JPS56117827A (en) * 1980-02-19 1981-09-16 Hitachi Cable Ltd Working device for internally grooved metallic pipe
GB2121326B (en) * 1982-05-22 1985-07-31 Cam Gears Ltd Valve sleeves
CH658006A5 (en) * 1983-03-07 1986-10-15 Grob Ernst Fa METHOD AND DEVICE FOR CALIBRATING REDUCING THE CROSS-SECTIONAL SURFACE OF A WORKPIECE ROTATING WITH IT.
JPS63149034A (en) * 1986-12-15 1988-06-21 Hitachi Ltd Manufacture of helical internal gear
DE4218092C1 (en) * 1992-05-07 1993-06-24 Wf-Maschinenbau Und Blechformtechnik Gmbh & Co Kg, 4415 Sendenhorst, De Mfg. gear part - involves using circular cylindrical part with inner toothing only on part of its length, non-toothed part being for seals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013159241A1 (en) 2012-04-25 2013-10-31 Ernst Grob Ag Device and method for producing thick-walled ring gears provided with internally toothed sections for driving pinions
WO2019158656A1 (en) 2018-02-16 2019-08-22 Ernst Grob Ag Thin-walled ring gears having inner and outer toothing, and a device and method for producing same

Also Published As

Publication number Publication date
ATE155717T1 (en) 1997-08-15
ES2105428T3 (en) 1997-10-16
EP0688617A1 (en) 1995-12-27
JPH0847738A (en) 1996-02-20
DE59403464D1 (en) 1997-09-04
JP3606949B2 (en) 2005-01-05

Similar Documents

Publication Publication Date Title
EP0558815B1 (en) Device for producing a hollow workpiece, profiled, at least internally, in a straight or oblique direction with respect to the workpiece-axis, and its use
DE2549230A1 (en) METHOD OF MANUFACTURING A TUBULAR, STRAIGHT OR ANGLED INTERNAL AND EXTERNAL PROFILES
DE4315503B4 (en) Method for producing a hollow workpiece, which is profiled at least inside straight or obliquely to the workpiece axis
EP0688617B1 (en) Method and device for rolling of hollow work pieces
DE60122000T2 (en) METHOD AND METHOD FOR FORMING A HOLLOWED WORKPIECE
DE2321477B2 (en) Method and device for dressing and sharpening grinding wheels
EP0917917B1 (en) Method and device for cold forming of hollow members
DE2720822A1 (en) PROCESS FOR MANUFACTURING STRAIGHT OR ANGLED GEARED MACHINE ELEMENTS, IN PARTICULAR SPRAY GEAR, BY COLD FORMING AND DEVICE FOR CARRYING OUT THE PROCESS
CH565002A5 (en) Surface machining system by rollers - has additional pair turning freely on shafts driving main ones
DE2502306A1 (en) METHOD AND DEVICE FOR SHAPING THE EXTERNAL SURFACE OF OBJECTS FROM DEFORMABLE MATERIAL
DE19829968A1 (en) Grinding work in chuck jaws superposes second tool movement on main tool and work grinding movement to contour work inside appropriate to jaw force.
DE19542892A1 (en) Cylinder bore honing process
DE3715392A1 (en) METHOD FOR PRODUCING A POT-LIKE HOLLOW BODY WITH A STRAIGHT OR SLOPE INTERNAL TOOTHING
DE10341716A1 (en) Radial forming apparatus for e.g. rod, wire-shaped workpiece, has processing tools provided around workpiece, arranged orthogonal to longitudinal axis of workpiece, and oscillated radially by ultrasonic exciting units
EP0828572B1 (en) Process for producing annular work pieces from metal with a profiled cross-section and a rolling facility for carrying out the method
WO2020099536A1 (en) Device and method for the cold-forming shaping of workpieces
DE3734123A1 (en) Method for the production of a thread on a ball journal and for smoothing or hardening the surface of the ball journal and an apparatus for carrying out the said method
EP0893177B1 (en) Method for the production of a toothed workpiece
DE102017113382B3 (en) Thread rolling method and thread rolling device for producing a thread
DE19525868A1 (en) Process for producing ring-shaped workpieces made of metal with a profiled cross section and rolling mill for carrying them out
WO1996036492B1 (en) Stitching device
DE3434226A1 (en) Method for the chipless working, in particular forming, of rod-shaped stock, such as shafts, wire or the like and a unit for carrying out the method
EP0531357B1 (en) Process and device for deep drawing or extrusion of rotationally symmetrical workpieces
AT316282B (en) Device for the production of seamless, thin-walled metal bottles
CH687597A5 (en) A process for the preparation rack, then prepared rack and device for Verfahrensdurchfuehrung.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB IT LI SE

17P Request for examination filed

Effective date: 19960322

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

17Q First examination report despatched

Effective date: 19970414

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB IT LI SE

REF Corresponds to:

Ref document number: 155717

Country of ref document: AT

Date of ref document: 19970815

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: KEMENY AG PATENTANWALTBUERO

Ref country code: CH

Ref legal event code: EP

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970725

REF Corresponds to:

Ref document number: 59403464

Country of ref document: DE

Date of ref document: 19970904

ITF It: translation for a ep patent filed

Owner name: ING. ZINI MARANESI & C. S.R.L.

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2105428

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20060607

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20060608

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20060613

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20060621

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20060622

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20060630

Year of fee payment: 13

Ref country code: CH

Payment date: 20060630

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20060720

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20070814

Year of fee payment: 14

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20070625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070625

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20080229

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070630

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080101

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070625

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070626

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20070626

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070702

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070626

BERE Be: lapsed

Owner name: ERNST *GROB A.G.

Effective date: 20080630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070625