EP0882532B1 - Flow-turning device and method for the manufacture of a workpiece having a toothed face - Google Patents

Flow-turning device and method for the manufacture of a workpiece having a toothed face Download PDF

Info

Publication number
EP0882532B1
EP0882532B1 EP98109295A EP98109295A EP0882532B1 EP 0882532 B1 EP0882532 B1 EP 0882532B1 EP 98109295 A EP98109295 A EP 98109295A EP 98109295 A EP98109295 A EP 98109295A EP 0882532 B1 EP0882532 B1 EP 0882532B1
Authority
EP
European Patent Office
Prior art keywords
workpiece
shaping tool
rollers
flow
face
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
EP98109295A
Other languages
German (de)
French (fr)
Other versions
EP0882532A3 (en
EP0882532A2 (en
Inventor
Karl-Heinz Pütz
Willi Zimmermann
Heinz Steinhauer
Bernd Stein
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.)
DYNAFORM GMBH
Original Assignee
Dynaform GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dynaform GmbH filed Critical Dynaform GmbH
Publication of EP0882532A2 publication Critical patent/EP0882532A2/en
Publication of EP0882532A3 publication Critical patent/EP0882532A3/en
Application granted granted Critical
Publication of EP0882532B1 publication Critical patent/EP0882532B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14Spinning
    • B21D22/16Spinning over shaping mandrels or formers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00Making other particular articles
    • B21D53/26Making other particular articles wheels or the like
    • B21D53/28Making other particular articles wheels or the like gear wheels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21HMAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H5/00Making gear wheels, racks, spline shafts or worms

Definitions

  • the invention relates to a pressure rolling device and a method for manufacturing a face gear workpiece according to the preamble of claim 1 or 7.
  • the spur gears are usually mechanical in such workpieces or manufactured by spark induction processing.
  • the workpieces can also be produced as sintered parts, so that a mechanical Editing is not necessary.
  • These are known manufacturing processes however, it is cost-intensive and is burdened by the resulting waste products such as Oils, coolants, oily shavings in manufacturing workers and the environment.
  • WO 96/20050 describes the production of internally toothed tubular parts described with the pressure rolling process. The manufacture of spur gears However, sharing is not possible with this procedure.
  • the invention is based on the object, the production of spur gears
  • the toothing can be inside or outside the sleeve.
  • the spur toothing in the workpiece is formed using the pressure rolling technology.
  • the workpiece located on a molding tool is pressed using spinning rollers plastically cold formed.
  • the thickness of the workpiece is reduced and the area is increased by pulling out the material, which is below the Pressure of the spinning rollers fluidizing material in a tooth structure of the mold is pressed.
  • An advantage of pressure rolling it is that, due to the cold forming, the finished Workpiece has a uniform structure.
  • the molding tool is surrounded by a displaceable tube, with which the contact surface of the mold for the workpiece is enlarged can be.
  • the workpiece is withdrawn from the workpiece, so that a The edge of the workpiece protrudes beyond the molding tool.
  • This edge can now with the help of the pressure rollers on the mold, so that a Sleeve with a radially running toothed end face is created, the toothing is inside the sleeve.
  • a hollow mandrel can be attached to the toothed workpiece serves as a support for the edge to be folded. This creates a sleeve with a radial End face, the toothing on the end face outside the sleeve lies.
  • the molding tool advantageously has a centering pin for the workpiece which can also serve as an anti-rotation device for the workpiece. So will ensures that the workpiece is in rotation Spinning rolling remains exactly positioned. This increases the accuracy of the Face toothing of the workpiece.
  • the pressure rollers run relative to the mold during the pressure rolling process with the workpiece on it. Either the molding tool rotates about its longitudinal axis and the spinning rollers only move in a radial direction Direction is over the tooth structure of the mold or the mold stationary and the pressure rollers are both radial and circumferential over the Tooth structure moves.
  • the molding tool 1 is an example of one Shown mold.
  • the molding tool 1 is cylindrical and driven to rotate about its longitudinal axis 1A attached to a machine tool, not shown.
  • the molding tool 1 On the end facing away from the machine tool 2, the molding tool 1 has a negative spur toothing 3 on.
  • the front toothing 3 can also be raised be formed on the end face 2.
  • the spur toothing 3 is the shaping structure for the workpiece.
  • a centering pin 4 is in the middle on the end face 2 arranged. It is used for guidance and centering of the blank 6 or the workpiece on the mold 1.
  • the end face 2 has a tooth-like Contour 5 or roughening that the centering pin 4th surrounds and lies within the spur toothing 3. This Contour 5 serves to prevent the blank 6 from rotating or of the workpiece so that it rotates with the molding tool 1 can be connected.
  • Fig. 2 is a thrush rolling device shown.
  • the pressure rolling device 100 has also a rotatable mold 101 with a End face 102 on which a tooth structure 103 and a centering pin 104 are attached.
  • the centering pin 104 has longitudinal grooves 105 or similar roughening.
  • a blank is over the centering pin 104 on the end face 102 of the Molded 101 pushed.
  • the edge of the central Opening of the blank or workpiece 106 is complementary to the longitudinal grooves 105 of the centering pin 104 designed so that the two parts as anti-rotation mesh.
  • the tooth structure 103 of the Molding tool 101 can therefore be radial from the circumference extend to the centering pin 104.
  • the illustrated Tooth structure 103 is only in the radial direction trained in sections.
  • the axis of rotation 107A of the Press roller 107 extends at an angle ⁇ to that Rotation axis 101A of the mold 101.
  • the angle ⁇ and the peripheral surfaces of the pressure roller 107 are selected that the pressure rollers 107 before the start of the forming up can be moved to the centering pin 104 and that the pressure rollers 107 exert an axial force on the Apply workpiece 106 located on the end face 102 can.
  • the angle ⁇ is at least 10 °, preferably 45 °.
  • the molding tool rotates during the pressure rolling operation 101 and the pressure rollers 107 about their respective axes of rotation 101A and 107A.
  • the pressure rolling takes place from the inside to the outside, i.e. that the pressure rollers 107, which at Stand at the centering pin 104, be moved outwards.
  • the pinch rollers 107 are not moved exactly radially outwards, but under an angle ⁇ so that the direction of advance of the spinning rollers 107 is inclined towards the end face 102.
  • the pressure rollers 107 With increasing radial distance to the axis of rotation 101A of the Forming tool, the pressure rollers 107 are thus closer to the face 102 brought up. This ensures that the pressure rollers 107 the material of the workpiece 106 press completely into the tooth structure 103.
  • Fig. 2 In the upper half of Fig. 2 is one Spinning roller 107 approximately in the middle of the forming process shown. In the lower half of the figure is one Press roller 107 shown in the end position. After reaching this end position are the spinning rollers of the workpiece 106 moved away so that this from the mold 101 can be removed.
  • FIG. 3 A section of the workpiece 106 is shown in FIG. 3, which with the pressure rolling device shown in Fig. 2 101 was manufactured.
  • the workpiece 106 is ring-shaped, with spur teeth 108 an end face 109 of the workpiece 106 applied is.
  • FIG 4 another example is one Spinning roller device shown.
  • the pressure rolling device 200 likewise has a molding tool 201 with a end tooth structure 203 and a centering pin 204 on.
  • the centering pin 204 has a smooth one Lateral surface.
  • the workpiece 206 is in the form of a sleeve with a front outer flange.
  • the diameter of the Sleeve is dimensioned so that it is on the centering pin 4 can be pushed so that the flange abuts the end face 202 of the molding tool 201.
  • a tailstock-side holding mandrel 205 is placed on the centering pin 204 pushed onto the workpiece 206 hits and this against the molding tool 201 presses, so that mold 201 and workpiece 206 one enter into a non-rotatable connection.
  • longitudinal grooves in the centering pin 204 or a further toothing not in the end face 202 of the molding tool 201 required.
  • the workpiece 206 is reshaped as well as in the second exemplary embodiment shown in FIG.
  • the workpiece 206 is shown, which with the Press rolling device 200 shown in Figure 4 manufactured has been.
  • the workpiece 206 has the shape of a sleeve 210, on one end a radially extending one Flange 209 is arranged.
  • a spur toothing 208 On the sleeve 210 facing away End face of the flange 209 is located a spur toothing 208.
  • a first embodiment of the invention is in Figure 6 shown.
  • the mold 101 corresponds the mold of the second example like it is shown in Figure 2.
  • the mold 101 is from surrounded by a slidable tube 312. Before the start of the Tube 312 is positioned such that that its face 313 is flush with the face 102 of the mold 101 completes, so that the bearing surface for the workpiece 306 is enlarged.
  • the pressure rolling process is not on the circumference of the mold 101 canceled, but only on the outer Scope of the tube 312. Since the material of the workpiece 306 is spread over a larger area, the falls Wall thickness of the finished workpiece 306 accordingly thinner. Therefore, a larger starting wall thickness selected for the workpiece 102.
  • the tube 312 is withdrawn, so that an edge 311 (see upper half 8) over the circumference of the molding tool 101 survives. With the help of the pressure rollers 107 the protruding Edge 311 on the peripheral surface of the mold 101 flipped.
  • the pipe 312 can also be used in the molding tool 101 then the workpiece 306 from the mold 101 strips.
  • the finished workpiece 306 is shown in FIG.
  • the folded over projecting edge 311 now forms a sleeve 310, one end of which is a radially extending surface 309 is located.
  • On the the The end face 309 has the side facing sleeve 310 a toothing 308 applied by the pressure rolling on.
  • FIG 8 is a second embodiment of the invention shown.
  • the pressure rolling device 400 corresponds essentially the pressure rolling device 300, as shown in Figure 6. Except for killing of the projecting edge 411 of the workpiece 406 (lower half of Fig. 8) are those to be traversed Manufacturing steps identical.
  • a tailstock side becomes Mandrel 412 moved against workpiece 406.
  • the protruding rollers 107 the projecting edge 411 of the Workpiece 406 detected and on the peripheral surface of the tailstock mandrel 412 flipped. In this way the workpiece 406 shown in FIG. 9 is produced.
  • the folded edge 411 forms a sleeve 410, on the end face there is a radially extending circular ring End face 409 connects.
  • On the The face 410 facing away from the sleeve 410 has the end face 409 a spur toothing 408 formed by the pressure rolling on.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Description

Die Erfindung betrifft eine Drückwalzvorrichtung und ein Verfahren zur Herstellung eines stirnverzahnten Werkstückes nach dem Oberbegriff des Anspruchs 1 bzw. 7.The invention relates to a pressure rolling device and a method for manufacturing a face gear workpiece according to the preamble of claim 1 or 7.

Stirnseitig verzahnte Werkstücke werden zum Beispiel im Fahrzeugbau benötigt, insbesondere für Sensorsysteme zur Erfassung von Rotationsbewegungen oder Rotationsgeschwindigkeiten, wie sie auch in ABS-Anlagen verwendet werden.Workpieces with gear teeth on the end face are required, for example, in vehicle construction, especially for sensor systems for detecting rotational movements or Rotation speeds as they are also used in ABS systems.

Üblicherweise werden die Stirnverzahnungen bei derartigen Werkstücken mechanisch oder durch funkeninduktive Bearbeitung hergestellt. Die Werkstücke können aber auch als Sinterteile hergestellt werden, so dass eine mechanische Bearbeitung nicht notwendig ist. Diese bekannten Herstellungsverfahren sind jedoch kostenintensiv und belasten durch die entstehenden Abfallprodukte wie Öle, Kühlschmierstoffe, ölige Späne bei der Fertigung Arbeitspersonal und Umwelt.The spur gears are usually mechanical in such workpieces or manufactured by spark induction processing. The workpieces can also be produced as sintered parts, so that a mechanical Editing is not necessary. These are known manufacturing processes however, it is cost-intensive and is burdened by the resulting waste products such as Oils, coolants, oily shavings in manufacturing workers and the environment.

In der WO 96/20050 ist die Herstellung von innenverzahnten rohrförmigen Teilen mit dem Drückwalzverfahren beschrieben. Die Herstellung von stirnverzahnten Teilen ist mit diesem Verfahren jedoch nicht möglich.WO 96/20050 describes the production of internally toothed tubular parts described with the pressure rolling process. The manufacture of spur gears However, sharing is not possible with this procedure.

Aus der gattungsgemäßen DE 39 40 323 C2 ist ein Verfahren zur Herstellung einer Planverzahnung beschrieben, mit einem eine stirnseitige Zahnstruktur aufweisenden Formwerkzeug und einer ein Werkstück in die Zahnstruktur pressenden Druckrolle, welche relativ zu dem Formwerkzeug umläuft.From the generic DE 39 40 323 C2 is a process for the production described a face gear, with a front tooth structure Forming tool and one pressing a workpiece into the tooth structure Pressure roller, which rotates relative to the mold.

Der Erfindung liegt die Aufgabe zu Grunde, die Herstellung von stirnverzahnten Werkstücken dahingehend zu verbessern, dass hülsenförmige Werkstücke mit radial verlaufender verzahnter Stirnfläche herstellbar sind, wobei die Verzahnung innerhalb oder außerhalb der Hülse liegen kann.The invention is based on the object, the production of spur gears To improve workpieces in such a way that sleeve-shaped workpieces with radially extending toothed end face can be produced, the toothing can be inside or outside the sleeve.

Diese Aufgabe wird mit den Merkmalen der Ansprüche 1 bzw. 7 gelöst.This object is achieved with the features of claims 1 and 7, respectively.

Die Stirnverzahnung in dem Werkstück wird mit der Drückwalztechnik ausgeformt. Mittels Drückrollen wird das auf einem Fromwerkzeug befindliche Werkstück plastisch kaltverformt. Dabei wird die Dicke des Werkstückes verringert und die Fläche durch Ausziehen des Materials vergrößert, wobei das unter dem Druck der Drückrollen flüssig werdende Material in eine Zahnstruktur des Formwerkzeuges gepresst wird. Auf diese Weise lassen sich stirnverzahnte Werkstücke einfach herstellen und zwar unter Vermeidung von umweltschädlichen Abfallprodukten wie z. B. Ölen oder Kühlschmiermitteln. Ein Vorteil des Drückwalzens ist es, dass, bedingt durch die kalte Umformung, das fertiggestellte Werkstück ein gleichmäßiges Gefüge aufweist.The spur toothing in the workpiece is formed using the pressure rolling technology. The workpiece located on a molding tool is pressed using spinning rollers plastically cold formed. The thickness of the workpiece is reduced and the area is increased by pulling out the material, which is below the Pressure of the spinning rollers fluidizing material in a tooth structure of the mold is pressed. In this way, spur-toothed workpieces can be machined easy to manufacture, while avoiding environmentally harmful Waste products such as B. oils or cooling lubricants. An advantage of pressure rolling it is that, due to the cold forming, the finished Workpiece has a uniform structure.

Erfindungsgemäß ist das Formwerkzeug von einem verschiebbaren Rohr umgeben, mit dem die Auflagefläche des Formwerkzeuges für das Werkstück vergrößert werden kann. Nach Beendigung des Ausformens der Stirnverzahnung auf dem Werkstück wird das Rohr von dem Werkstück zurückgezogen, so dass ein Rand des Werkstücks über das Formwerkzeug übersteht. Dieser Rand kann nun mit Hilfe der Drückrollen auf das Formwerkzeug umgelegt werden, so dass eine Hülse mit radial verlaufender verzahnter Stirnfläche entsteht, wobei die Verzahnung im Inneren der Hülse liegt. Um den überstehenden Rand des verzahnten Werkstückes auch zu der anderen, dem Formwerkzeug abgewandten Seite umzulegen, kann ein Hohldorn an das verzahnte Werkstück angesetzt werden, der als Auflage für den umzulegenden Rand dient. So entsteht eine Hülse mit radialer Stirnfläche, wobei die Verzahnung auf der Stirnfläche außerhalb der Hülse liegt. According to the invention, the molding tool is surrounded by a displaceable tube, with which the contact surface of the mold for the workpiece is enlarged can be. After completing the shaping of the spur gear the workpiece is withdrawn from the workpiece, so that a The edge of the workpiece protrudes beyond the molding tool. This edge can now with the help of the pressure rollers on the mold, so that a Sleeve with a radially running toothed end face is created, the toothing is inside the sleeve. To the protruding edge of the toothed To also turn the workpiece to the other side facing away from the molding tool, a hollow mandrel can be attached to the toothed workpiece serves as a support for the edge to be folded. This creates a sleeve with a radial End face, the toothing on the end face outside the sleeve lies.

Vorteilhafterweise weist das Formwerkzeug einen Zentrierzapfen für das Werkstück auf, der auch als Verdrehsicherung für das Werkstück dienen kann. So wird sichergestellt, dass das Werkstück während des unter einer Rotation verlaufenden Drückwalzens exakt positioniert bleibt. Dies erhöht die Genauigkeit der Stirnverzahnung des Werkstückes.The molding tool advantageously has a centering pin for the workpiece which can also serve as an anti-rotation device for the workpiece. So will ensures that the workpiece is in rotation Spinning rolling remains exactly positioned. This increases the accuracy of the Face toothing of the workpiece.

Die Drückrollen laufen während des Drückwalzvorganges relativ zu dem Formwerkzeug mit dem daran befindlichen Werkstück um. Entweder rotiert das Formwerkzeug um seine Längsachse und die Drückrollen bewegen sich nur in radialer Richtung über die Zahnstruktur des Formwerkzeuges oder das Formwerkzeug ist stationär und die Drückrollen werden sowohl radial als auch umlaufend über die Zahnstruktur bewegt.The pressure rollers run relative to the mold during the pressure rolling process with the workpiece on it. Either the molding tool rotates about its longitudinal axis and the spinning rollers only move in a radial direction Direction is over the tooth structure of the mold or the mold stationary and the pressure rollers are both radial and circumferential over the Tooth structure moves.

Es ist auch möglich, die äußeren Mantelflächen des Formwerkzeuges bzw. des Hohldornes mit einer formgebenden Struktur, wie z. B. einer Verzahnung oder einem Gewinde zu versehen, so dass die Hülse des fertiggestellen Werkstückes in ihrem Inneren eine entsprechende Verzahnung oder ein Gewinde aufweist.It is also possible to use the outer lateral surfaces of the mold or Hollow mandrels with a shaping structure, such as. B. a toothing or to provide a thread so that the sleeve of the finished workpiece has a corresponding toothing or thread in its interior.

Im folgenden werden Ausführungsbeispiele der Erfindung anhand der Zeichnungen näher erläutert, wobei die Figuren 1 bis 5 nur der Veranschanlichung des Standes der Technik dienen.The following are exemplary embodiments of the invention with reference to the drawings explained in more detail, wherein the figures 1 to 5 only the visualization serve the state of the art.

Es zeigen:

Fig. 1
ein Formwerkzeug,
Fig. 2
eine Drückwalzvorrichtung
Fig. 3
ein mit der in Fig.2 gezeigten Vorrichtung hergestelltes Werkstück,
Fig. 4
ein weiteres Beispiel einer Drückwalzvorrichtung,
Fig. 5
ein mit der in Fig. 4 gezeigten Vorrichtung hergestelltes Werkstück,
Fig. 6
ein erstes Ausführungsbeispiel der Drückwalzvorrichtung,
Fig. 7
ein mit dem ersten Ausführungsbeispiel hergestelltes Werkstück,
Fig. 8
ein zweites Ausführungsbeispiel der Drückwalzvorrichtung, und
Fig. 9
ein mit dem zweiten Ausführungsbeispiel hergestelltes Werkstück.
Show it:
Fig. 1
a mold,
Fig. 2
a pressure rolling device
Fig. 3
a workpiece produced with the device shown in FIG. 2,
Fig. 4
another example of a pressure rolling device,
Fig. 5
a workpiece produced with the device shown in Fig. 4,
Fig. 6
a first embodiment of the pressure rolling device,
Fig. 7
a workpiece produced with the first embodiment,
Fig. 8
a second embodiment of the pressure rolling device, and
Fig. 9
a workpiece produced with the second embodiment.

In Fig. 1 ist ein Beispiel eines Formwerkzeuges gezeigt. Das Formwerkzeug 1 ist zylinderförmig und um seine Längsachse 1A drehend antreibbar an einer nicht dargestellten Werkzeugmaschine befestigt. An der der Werkzeugmaschine abgewandten Stirnseite 2 weist das Formwerkzeug 1 eine negative Stirnverzahnung 3 auf. Die Stirnverzahnung 3 kann auch erhaben auf der Stirnseite 2 ausgebildet sein. Die Stirnverzahnung 3 ist die formgebende Struktur für das Werkstück. Ein Zentrierzapfen 4 ist mittig auf der Stirnseite 2 angeordnet. Er dient zur Führung und Zentrierung des Rohlings 6 bzw. des Werkstückes auf dem Formwerkzeug 1. Die Stirnfläche 2 weist eine zahnähnliche Kontur 5 oder Aufrauhung auf, die den Zentrierzapfen 4 umgibt und innerhalb der Stirnverzahnung 3 liegt. Diese Kontur 5 dient zur Verdrehsicherung des Rohlings 6 bzw. des Werkstückes, so daß dieses drehfest mit dem Formwerkzeug 1 verbunden werden kann.1 is an example of one Shown mold. The molding tool 1 is cylindrical and driven to rotate about its longitudinal axis 1A attached to a machine tool, not shown. On the end facing away from the machine tool 2, the molding tool 1 has a negative spur toothing 3 on. The front toothing 3 can also be raised be formed on the end face 2. The spur toothing 3 is the shaping structure for the workpiece. A centering pin 4 is in the middle on the end face 2 arranged. It is used for guidance and centering of the blank 6 or the workpiece on the mold 1. The end face 2 has a tooth-like Contour 5 or roughening that the centering pin 4th surrounds and lies within the spur toothing 3. This Contour 5 serves to prevent the blank 6 from rotating or of the workpiece so that it rotates with the molding tool 1 can be connected.

In Fig. 2 ist eine Drüchwalzvorrichtung gezeigt. Die Drückwalzvorrichtung 100 weist ebenfalls ein drehbares Formwerkzeug 101 mit einer Stirnfläche 102, auf der eine Zahnstruktur 103 sowie ein Zentrierzapfen 104 angebracht sind, auf. Auf seiner Umfangsfläche hat der Zentrierzapfen 104 Längsrillen 105 oder ähnliche Aufrauhungen. Ein Rohling wird über den Zentrierzapfen 104 auf die Stirnfläche 102 des Formwerkzeuges 101 geschoben. Der Rand der zentralen Öffnung des Rohlings bzw. des Werkstückes 106 ist komplementär zu den Längsrillen 105 des Zentrierzapfens 104 ausgebildet, so daß die beiden Teile als Verdrehsicherung ineinandergreifen. Die Zahnstruktur 103 des Formwerkzeuges 101 kann sich daher radial vom Umfang bis zu dem Zentrierzapfen 104 erstrecken. Die dargestellte Zahnstruktur 103 ist in radialer Richtung nur abschnittsweise ausgebildet.In Fig. 2 is a thrush rolling device shown. The pressure rolling device 100 has also a rotatable mold 101 with a End face 102 on which a tooth structure 103 and a centering pin 104 are attached. On his The centering pin 104 has longitudinal grooves 105 or similar roughening. A blank is over the centering pin 104 on the end face 102 of the Molded 101 pushed. The edge of the central Opening of the blank or workpiece 106 is complementary to the longitudinal grooves 105 of the centering pin 104 designed so that the two parts as anti-rotation mesh. The tooth structure 103 of the Molding tool 101 can therefore be radial from the circumference extend to the centering pin 104. The illustrated Tooth structure 103 is only in the radial direction trained in sections.

Nachdem das Werkstück 106 an der Stirnfläche 102 anliegt, werden mindestens zwei Drückrollen 107 an das Werkstück 106 herangefahren. Die Drehachse 107A der Drückrolle 107 verläuft unter einem Winkel α zu der Drehachse 101A des Formwerkzeuges 101. Der Winkel α und die Umfangsflächen der Drückrolle 107 sind so gewählt, daß die Drückrollen 107 vor dem Start des Umformens bis an den Zentrierzapfen 104 heranbewegt werden können und daß die Drückrollen 107 eine axiale Kraft auf das an der Stirnseite 102 befindliche Werkstück 106 aufbringen können. Der Winkel α beträgt mindestens 10°, vorzugsweise 45°.After the workpiece 106 rests on the end face 102, are at least two pressure rollers 107 to the Workpiece 106 moved up. The axis of rotation 107A of the Press roller 107 extends at an angle α to that Rotation axis 101A of the mold 101. The angle α and the peripheral surfaces of the pressure roller 107 are selected that the pressure rollers 107 before the start of the forming up can be moved to the centering pin 104 and that the pressure rollers 107 exert an axial force on the Apply workpiece 106 located on the end face 102 can. The angle α is at least 10 °, preferably 45 °.

Während der Drückwalzoperation rotiert das Formwerkzeug 101 und die Drückrollen 107 um ihre jeweiligen Drehachsen 101A bzw. 107A. Das Drückwalzen findet von innen nach außen statt, d.h. daß die Drückrollen 107, die bei Beginn des Umformens an dem Zentrierzapfen 104 stehen, nach außen bewegt werden. Die Drückrollen 107 werden nicht exakt radial nach außen bewegt, sondern unter einem Winkel β, so daß die Vorschubrichtung der Drückrollen 107 zu der Stirnfläche 102 hin geneigt ist. Mit zunehmendem radialen Abstand zu der Drehachse 101A des Formwerkzeuges werden die Drückrollen 107 also näher an die Stirnfläche 102 herangeführt. So wird sichergestellt, daß die Drückrollen 107 das Material des Werkstückes 106 vollkommen in die Zahnstruktur 103 hineinpressen. In der oberen Hälfte von Fig. 2 ist eine Drückrolle 107 etwa in der Mitte des Umformprozesses dargestellt. In der unteren Hälfte der Figur ist eine Drückrolle 107 in Endstellung gezeigt. Nach Erreichen dieser Endstellung werden die Drückrollen von dem Werkstück 106 wegbewegt, so daß dieses von dem Formwerkzeug 101 abgenommen werden kann.The molding tool rotates during the pressure rolling operation 101 and the pressure rollers 107 about their respective axes of rotation 101A and 107A. The pressure rolling takes place from the inside to the outside, i.e. that the pressure rollers 107, which at Stand at the centering pin 104, be moved outwards. The pinch rollers 107 are not moved exactly radially outwards, but under an angle β so that the direction of advance of the spinning rollers 107 is inclined towards the end face 102. With increasing radial distance to the axis of rotation 101A of the Forming tool, the pressure rollers 107 are thus closer to the face 102 brought up. This ensures that the pressure rollers 107 the material of the workpiece 106 press completely into the tooth structure 103. In the upper half of Fig. 2 is one Spinning roller 107 approximately in the middle of the forming process shown. In the lower half of the figure is one Press roller 107 shown in the end position. After reaching this end position are the spinning rollers of the workpiece 106 moved away so that this from the mold 101 can be removed.

In Figur 3 ist ein Ausschnitt des Werkstückes 106 gezeigt, welches mit der in Fig. 2 dargestellten Drückwalzvorrichtung 101 hergestellt wurde. Das Werkstück 106 ist ringförmig, wobei eine Stirnverzahnung 108 auf einer Stirnfläche 109 des Werkstückes 106 aufgebracht ist.A section of the workpiece 106 is shown in FIG. 3, which with the pressure rolling device shown in Fig. 2 101 was manufactured. The workpiece 106 is ring-shaped, with spur teeth 108 an end face 109 of the workpiece 106 applied is.

In Figur 4 ist ein weiteres Beispiel einer Drückwalzvorrichtung dargestellt. Die Drückwalzvorrichtung 200 weist ebenfalls ein Formwerkzeug 201 mit einer stirnseitigen Zahnstruktur 203 und einem Zentrierzapfen 204 auf. Der Zentrierzapfen 204 hat jedoch eine glatte Mantelfläche.In Figure 4, another example is one Spinning roller device shown. The pressure rolling device 200 likewise has a molding tool 201 with a end tooth structure 203 and a centering pin 204 on. The centering pin 204, however, has a smooth one Lateral surface.

Das Werkstück 206 hat die Form einer Hülse mit einem stirnseitigen äußeren Flansch. Der Durchmesser der Hülse ist derart bemessen, daß sie auf den Zentrierzapfen 4 aufgeschoben werden kann, so daß der Flansch an der Stirnfläche 202 des Formwerkzeuges 201 anliegt. Ein reitstockseitiger Haltedorn 205 wird auf den Zentrierzapfen 204 aufgeschoben, bis er auf das Werkstück 206 trifft und dieses gegen das Formwerkzeug 201 drückt, so daß Formwerkzeug 201 und Werkstück 206 eine drehfeste Verbindung eingehen. Daher sind Längsrillen in dem Zentrierzapfen 204 oder eine weitere Verzahnung in der Stirnfläche 202 des Formwerkzeuges 201 nicht erforderlich. Das Umformen des Werkstückes 206 erfolgt ebenso wie bei dem in Figur 2 gezeigten zweiten Ausführungsbeispiel.The workpiece 206 is in the form of a sleeve with a front outer flange. The diameter of the Sleeve is dimensioned so that it is on the centering pin 4 can be pushed so that the flange abuts the end face 202 of the molding tool 201. A tailstock-side holding mandrel 205 is placed on the centering pin 204 pushed onto the workpiece 206 hits and this against the molding tool 201 presses, so that mold 201 and workpiece 206 one enter into a non-rotatable connection. Hence longitudinal grooves in the centering pin 204 or a further toothing not in the end face 202 of the molding tool 201 required. The workpiece 206 is reshaped as well as in the second exemplary embodiment shown in FIG.

In Figur 5 ist das Werkstück 206 gezeigt, das mit der in Figur 4 gezeigten Drückwalzvorrichtung 200 gefertigt wurde. Das Werkstück 206 hat die Form einer Hülse 210, an deren einer Stirnseite ein radial verlaufender Flansch 209 angeordnet ist. Auf der der Hülse 210 abgewandten Stirnfläche des Flansches 209 befindet sich eine Stirnverzahnung 208.In Figure 5, the workpiece 206 is shown, which with the Press rolling device 200 shown in Figure 4 manufactured has been. The workpiece 206 has the shape of a sleeve 210, on one end a radially extending one Flange 209 is arranged. On the sleeve 210 facing away End face of the flange 209 is located a spur toothing 208.

Ein erstes Ausführungsbeispiel der Erfindung ist in Figur 6 dargestellt. Das Formwerkzeug 101 entspricht dem Formwerkzeug des zweite Beispieles wie es in Figur 2 gezeigt ist. Das Formwerkzeug 101 ist von einem verschiebbaren Rohr 312 umgeben. Vor Beginn des Umformvorganges wird das Rohr 312 derart positioniert, daß seine Stirnfläche 313 bündig mit der Stirnfläche 102 des Formwerkzeuges 101 abschließt, so daß die Auflagefläche für das Werkstück 306 vergrößert wird. Der Drückwalzvorgang wird also nicht am Umfang des Formwerkzeuges 101 abgebrochen, sondern erst an dem äußeren Umfang des Rohres 312. Da das Material des Werkstückes 306 auf einer größeren Fläche verteilt wird, fällt die Wandstärke des fertiggestellten Werkstückes 306 entsprechend dünner aus. Daher wird eine größere Ausgangswandstärke für das Werkstück 102 gewählt. A first embodiment of the invention is in Figure 6 shown. The mold 101 corresponds the mold of the second example like it is shown in Figure 2. The mold 101 is from surrounded by a slidable tube 312. Before the start of the Tube 312 is positioned such that that its face 313 is flush with the face 102 of the mold 101 completes, so that the bearing surface for the workpiece 306 is enlarged. The The pressure rolling process is not on the circumference of the mold 101 canceled, but only on the outer Scope of the tube 312. Since the material of the workpiece 306 is spread over a larger area, the falls Wall thickness of the finished workpiece 306 accordingly thinner. Therefore, a larger starting wall thickness selected for the workpiece 102.

Nach Abschluß des Drückwalzens wird das Rohr 312 zurückgezogen, so daß ein Rand 311 (siehe obere Hälfte von Fig. 8) über den Umfang des Formwerkzeuges 101 übersteht. Mit Hilfe der Drückrollen 107 wird der überstehende Rand 311 auf die Umfangsfläche des Formwerkzeuges 101 umgelegt. Zum Lösen des Werkstückes 306 von dem Formwerkzeug 101 kann auch das Rohr 312 verwendet werden, das dann das Werkstück 306 von dem Formwerkzeug 101 abstreift.After the pressure rolling is completed, the tube 312 is withdrawn, so that an edge 311 (see upper half 8) over the circumference of the molding tool 101 survives. With the help of the pressure rollers 107 the protruding Edge 311 on the peripheral surface of the mold 101 flipped. To release the workpiece 306 from The pipe 312 can also be used in the molding tool 101 then the workpiece 306 from the mold 101 strips.

In Figur 7 ist das fertiggestellte Werkstück 306 gezeigt. Der umgelegte überstehende Rand 311 bildet nun eine Hülse 310, an deren einer Stirnseite sich eine radial verlaufende Fläche 309 befindet. Auf der der Hülse 310 zugewandten Seite weist die Stirnfläche 309 eine durch das Drückwalzen aufgebrachte Verzahnung 308 auf.The finished workpiece 306 is shown in FIG. The folded over projecting edge 311 now forms a sleeve 310, one end of which is a radially extending surface 309 is located. On the the The end face 309 has the side facing sleeve 310 a toothing 308 applied by the pressure rolling on.

In Figur 8 ist ein zweites Ausführungsbeispiel der Erfindung dargestellt. Die Drückwalzvorrichtung 400 entspricht im wesentlichen der Drückwalzvorrichtung 300, wie sie in Figur 6 dargestellt ist. Bis auf das Umlegen des überstehenden Randes 411 des Werkstückes 406 (untere Hälfte von Fig. 8) sind die zu durchlaufenden Fertigungsschritte identisch.In Figure 8 is a second embodiment of the invention shown. The pressure rolling device 400 corresponds essentially the pressure rolling device 300, as shown in Figure 6. Except for killing of the projecting edge 411 of the workpiece 406 (lower half of Fig. 8) are those to be traversed Manufacturing steps identical.

Nach Zurückziehen des Rohres 312 wird ein reitstockseitiger Dorn 412 gegen das Werkstück 406 gefahren. Mit den Drückrollen 107 wird der überstehende Rand 411 des Werkstückes 406 erfaßt und auf die Umfangsfläche des reitstockseitigen Dorns 412 umgelegt. Auf diese Weise wird das in Figur 9 dargestellte Werkstück 406 hergestellt. Der umgelegte Rand 411 bildet eine Hülse 410, an deren Stirnseite sich eine radial verlaufende kreisringförmige Stirnfläche 409 anschließt. Auf der der Hülse 410 abgewandten Seite weist die Stirnfläche 409 eine durch das Drückwalzen geformte Stirnverzahnung 408 auf.After pulling back the tube 312, a tailstock side becomes Mandrel 412 moved against workpiece 406. With the protruding rollers 107 the projecting edge 411 of the Workpiece 406 detected and on the peripheral surface of the tailstock mandrel 412 flipped. In this way the workpiece 406 shown in FIG. 9 is produced. The folded edge 411 forms a sleeve 410, on the end face there is a radially extending circular ring End face 409 connects. On the the The face 410 facing away from the sleeve 410 has the end face 409 a spur toothing 408 formed by the pressure rolling on.

Claims (9)

  1. Flow-turning apparatus (100; 200; 300) for producing a spur-cut workpiece (106; 206; 306; 406), having a shaping tool (1; 101; 201) which on its end face incorporates a tooth structure (3; 103), and at least two rollers (107) which press a workpiece (106; 206; 306; 406) into the tooth structure (3; 103) and which revolve relative to the shaping tool (1; 101; 201), characterised in that in order to increase the size of the supporting surface for the workpiece (306; 406), the shaping tool (101) is encompassed by a displaceable tube (312) which is adapted to be withdrawn once the operation shaping the set of toothing (308; 408) is over, thereby enabling the projecting edge (311; 411) of the workpiece (306; 406) to be transferred.
  2. Flow-turning apparatus according to claim 1, characterised in that the shaping tool (1; 101; 201) is cylindrical in shape and on the end face (2; 102; 202) has a centrally disposed centring pin (4; 104; 204) onto which a blank (6) can be pushed.
  3. Flow-turning apparatus according to claim 2, characterised in that the centring pin (104) and the blank (6), or workpiece (106; 306; 406), incorporate meshing contours (105) to keep them from twisting.
  4. Flow-turning apparatus according to any of claims 1 to 3, characterised in that in the region in which the rollers (107) will be positioned the shaping tool (1) incorporates a holding structure (5) which keeps the workpiece from twisting.
  5. Flow-turning apparatus according to any of claims 1 to 4, characterised in that the axes (107A) of the rollers (10) run at an angle a > 10° to the axis (1A; 101A; 201A) of the shaping tool (1; 101; 201).
  6. Flow-turning apparatus according to any of claims 1 to 5, characterised by having a hollow mandrel (412) which, once the operation shaping the set of toothing (408) is over, can be set onto the workpiece (406) which is located on the shaping tool (101), thereby enabling the edge (411) of the workpiece (406) to be transferred to the hollow mandrel (412).
  7. Process for producing a spur-cut workpiece (106; 206; 306; 406) with a shaping tool (1; 101; 201) which has a tooth structure (3; 103; 203) on its end face (2; 102; 202), and at least two rollers (107) which revolve relative to the shaping tool (1; 101; 201), comprising the following steps:
    pressing the rollers (107) against the radially inner region of the end surface of the workpiece (106; 206; 306; 406) which is resting against the tooth structure (3; 103; 203),
    moving the rollers (107) over the tooth structure (3; 103; 203) and so rolling the workpiece (106; 206; 306; 406) into the tooth structure (3, 103; 203), thereby producing a matching set of toothing (108; 208; 308; 408) on the end surface of the workpiece (106; 206; 306; 406),
    characterised by the additional steps of:
    using a tube (312) which is positioned around the shaping tool (101), said tube increasing the size of the supporting surface for the workpiece (306; 406),
    withdrawing the tube (312) once the operation shaping the set of toothing (308; 408) is over,
    transferring the projecting edge (311; 411) of the workpiece (306; 406).
  8. Process according to claim 1, characterised in that
    the projecting edge (311;411) of the workpiece (306; 406) is transferred onto the circumferential surface of the shaping tool (101).
  9. Process according to claim 7, characterised in that
    a hollow mandrel (412) is positioned against the workpiece (406), and that
    the projecting edge (411) of the workpiece (406) is transferred onto the circumferential surface of the hollow mandrel (412).
EP98109295A 1997-06-03 1998-05-22 Flow-turning device and method for the manufacture of a workpiece having a toothed face Expired - Lifetime EP0882532B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19723198A DE19723198A1 (en) 1997-06-03 1997-06-03 Press-rolling device and method for producing a face-toothed workpiece
DE19723198 1997-06-03

Publications (3)

Publication Number Publication Date
EP0882532A2 EP0882532A2 (en) 1998-12-09
EP0882532A3 EP0882532A3 (en) 1999-03-17
EP0882532B1 true EP0882532B1 (en) 2002-05-08

Family

ID=7831247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98109295A Expired - Lifetime EP0882532B1 (en) 1997-06-03 1998-05-22 Flow-turning device and method for the manufacture of a workpiece having a toothed face

Country Status (2)

Country Link
EP (1) EP0882532B1 (en)
DE (2) DE19723198A1 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19810265A1 (en) * 1998-03-10 1999-09-16 Dynamit Nobel Ag Metal cylinder liner production for use in internal combustion engine
DE19850740A1 (en) * 1998-09-09 2000-03-23 Wf Maschinenbau Blechformtech Transmission parts, especially gears, production from round metal blanks uses pressure rollers to press blanks to reduce thickness and increase external diameter
DE10252089A1 (en) 2002-11-08 2004-05-27 Tesa Ag Adhesive and use of the same for a PSA strip made of at least one layer, which can be removed again without leaving any residue and without destruction by stretching it in the bonding plane
DE102008021740A1 (en) 2008-04-30 2009-11-05 Tesa Se Adhesive composition of ethylene polymer and use thereof for a pressure-sensitive adhesive film strip which can be detached again by stretching stretching substantially in the bonding plane residue and non-destructive
DE102012223670A1 (en) 2012-12-19 2014-06-26 Tesa Se Removable pressure-sensitive adhesive strip
DE202013012788U1 (en) 2012-12-19 2019-08-29 Tesa Se Removable pressure-sensitive adhesive strip
DE102014208263A1 (en) 2014-04-30 2015-11-05 Tesa Se Detachment aid for a removable adhesive film
DE102014208264A1 (en) 2014-04-30 2015-11-05 Tesa Se Adhesive tape for a removable adhesive film
CN104624898B (en) * 2014-12-15 2016-06-22 西安理工大学 A kind of general purpose single spindle vertical high speed cold is tempered lathe
EP3581630B1 (en) 2015-04-02 2021-07-14 tesa SE Removable adhesive tape
DE202015009724U1 (en) 2015-04-02 2019-08-16 Tesa Se Removable pressure-sensitive adhesive strip
DE102015206076A1 (en) 2015-04-02 2016-10-06 Tesa Se Removable pressure-sensitive adhesive strip
DE202015009721U1 (en) 2015-04-02 2019-08-23 Tesa Se Removable pressure-sensitive adhesive strip
DE202015009730U1 (en) 2015-04-02 2019-09-06 Tesa Se Removable pressure-sensitive adhesive strip
DE102016223852A1 (en) 2016-11-30 2018-05-30 Tesa Se Removable pressure-sensitive adhesive strip
DE102017203092A1 (en) 2017-02-24 2018-08-30 Tesa Se Removable pressure-sensitive adhesive strip
DE102017206083A1 (en) 2017-04-10 2018-10-11 Tesa Se Bonding in electrochemical cells and stacking of electrochemical cells
DE102017220998A1 (en) 2017-11-23 2019-05-23 Tesa Se Removable pressure-sensitive adhesive strip
DE102019204344A1 (en) 2019-03-28 2020-10-01 Tesa Se Removable adhesive strip

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1788382A (en) * 1926-03-15 1931-01-13 Commercial Shearing Apparatus for making dished heads
DE909447C (en) * 1941-02-06 1954-04-22 Paul Bruening Maschinen Und We Method and device for the production of clutch teeth on tool and machine parts of all kinds, in particular on bulky and thin-walled parts
DD35074A (en) * 1963-05-14
DE1287549B (en) * 1965-03-08 1969-01-23 Zentrale Entwicklung Und Konst Process for rolling a toothing on an annular or disk-shaped workpiece
DE3804656A1 (en) * 1988-02-15 1989-08-24 Kieserling & Albrecht Method and apparatus and use of a cross-slide head for spinning
US4996859A (en) * 1989-10-23 1991-03-05 A. J. Rose Manufacturing Company Method and apparatus for roll forming metal
DE3940323C2 (en) * 1989-12-06 1993-10-21 Wf Maschinenbau Blechformtech Process for producing a face gear
DE4307775A1 (en) * 1993-03-12 1994-09-15 Dynamit Nobel Ag Method and device for producing high-strength pipes
DE4436515A1 (en) * 1994-10-13 1996-04-18 Wf Maschinenbau Blechformtech Method for producing an externally toothed gear unit for the motor-car industry
DE4446919A1 (en) * 1994-12-28 1996-07-04 Dynamit Nobel Ag Process for the production of internally toothed parts
EP0736347A1 (en) * 1995-04-06 1996-10-09 Samtech Corporation Method of manufacturing toothed transmission element
JP3325184B2 (en) * 1996-07-01 2002-09-17 三菱電機株式会社 Manufacturing apparatus and manufacturing method for yoke of planetary reduction starter

Also Published As

Publication number Publication date
DE59804018D1 (en) 2002-06-13
EP0882532A3 (en) 1999-03-17
EP0882532A2 (en) 1998-12-09
DE19723198A1 (en) 1998-12-10

Similar Documents

Publication Publication Date Title
EP0882532B1 (en) Flow-turning device and method for the manufacture of a workpiece having a toothed face
EP2210682B1 (en) Method and apparatus for spinning
EP3351313B1 (en) Method and device for pressure rolling
EP2127777B1 (en) Device and method for generating or processing workpieces from a blank mould, in particular for casting internal profiles or internal gears
CH656079A5 (en) METHOD FOR FORMING THE HULLS OF SHEET METAL CONTAINERS AND DEVICE FOR IMPLEMENTING THE METHOD.
DE3742516C2 (en) Method for producing a helical internal gear and device for carrying out the method
EP0970765A2 (en) Method for forming a workpiece by flow-turning
EP1017518B1 (en) Flowturning device and method for producing internal geared wheels with two sets of inner toothing
EP0955110B1 (en) Method and device for flow-turning
DE1602135A1 (en) Pipe manufacturing
EP1356891A1 (en) Method of manufacturing sliding sleeves for gear boxes
DE19620812B4 (en) Method for producing a rotationally symmetrical body
DE2922692A1 (en) METHOD FOR PRODUCING ROTATIONALLY SYMMETRICAL METAL HOLLOW BODIES BY FLOW PRESSURE
EP1660257B1 (en) Method and device for producing at least partially profiled tubes
DE19732146B4 (en) Method and device for producing annular components with a wedge-shaped inner profile
DE4321779B4 (en) Method for producing a starter ring gear from sheet metal and starter ring gear produced by the method
DE1652657B2 (en) ROLLING DEVICE FOR COLD ROLLING OF RELATIVELY THIN-WALLED BEARING RINGS
EP0893177B1 (en) Method for the production of a toothed workpiece
DE1602672A1 (en) Method and device for forming ring-shaped workpieces
WO1999036206A1 (en) Method and device for producing hollow bodies by means of cross-rolling
EP2343138B1 (en) Method and device for forming workpieces
DE19650343B4 (en) Process for producing a cylindrical, thin-walled hollow body with a profile
EP1163961B1 (en) Method and apparatus for manufacturing a gearing element
EP1270111A1 (en) Method and device producing a rotationally symmetrical object
DE4431500C2 (en) Method for producing a rotationally symmetrical workpiece made of metal by pressing and device for carrying out the method

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: A2

Designated state(s): BE DE ES FR GB IT NL

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 19990917

AKX Designation fees paid

Free format text: BE DE ES FR GB IT NL

17Q First examination report despatched

Effective date: 20000713

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

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

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: DYNAFORM GMBH

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE ES FR GB IT NL

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020508

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 20020508

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020508

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20020508

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: 20020531

REF Corresponds to:

Ref document number: 59804018

Country of ref document: DE

Date of ref document: 20020613

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20020508

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20021128

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

Ref country code: DE

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

Effective date: 20021203

EN Fr: translation not filed
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

Effective date: 20030211