EP1231001A1 - Thread rolling head - Google Patents

Thread rolling head Download PDF

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Publication number
EP1231001A1
EP1231001A1 EP02000430A EP02000430A EP1231001A1 EP 1231001 A1 EP1231001 A1 EP 1231001A1 EP 02000430 A EP02000430 A EP 02000430A EP 02000430 A EP02000430 A EP 02000430A EP 1231001 A1 EP1231001 A1 EP 1231001A1
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EP
European Patent Office
Prior art keywords
shaft
bearing unit
rollers
titanium
gear
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.)
Granted
Application number
EP02000430A
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German (de)
French (fr)
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EP1231001B1 (en
Inventor
Andreas Focken
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Fette GmbH
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Fette GmbH
Wilhelm Fette GmbH
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Publication of EP1231001A1 publication Critical patent/EP1231001A1/en
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Publication of EP1231001B1 publication Critical patent/EP1231001B1/en
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    • 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
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/04—Making by means of profiled-rolls or die rolls
    • B21H3/042—Thread-rolling heads
    • B21H3/044—Thread-rolling heads working axially

Definitions

  • the invention relates to a thread rolling head, in particular an axial or Radial thread rolling head according to claims 1 and 4.
  • Thread rolling heads are generally known.
  • An axial thread rolling head is about in DE 44 30 184 disclosed. Like other conventional axial roller heads, it turns three Profile rollers arranged at 120 ° to each other, in a storage unit are rotatably mounted.
  • the storage unit is held by a shaft that is in a Machine tool is clamped.
  • the rolling head is held in the direction of rotation, can, however, move axially.
  • the rolling head is pressed onto the rotating tool, whereby the feed takes place through the axially freely movable rolling head the formation of the thread.
  • the profile rollers are mounted on eccentric shafts whose actuation brings the rollers into engagement with the tool.
  • the eccentric shafts are actuated by pinions with a central gear comb or with a ring gear, the actuation of the ring gear a Adjustment of the profile rollers relative to the workpiece.
  • the eccentric shafts are preferably biased by a coil spring, being at the end of processing be biased into the initial position.
  • the coil spring is in one Spring housing mounted, which represents a coupling section for a dog clutch, a switching ring is arranged between these parts, which with an annular ball cage cooperates.
  • a front panel at the front end The axial thread rolling head is used to support the eccentric shafts.
  • a radial roller head as known from DE 42 36 085 or DE 197 01 049 has been characterized by profile rollers or rollers that one over the Circumferentially spiraling course of its surface contrary to its direction of rotation exhibit.
  • the rollers are coupled to a gear train, and a lock disengages automatically after each full rotation of the roller. Before the rolling process the lock is released, namely from the workpiece that with the Rolls to be deformed. In the starting position there are flattened areas of the rollers face each other to thereby introduce the workpiece enable.
  • the rollers are rotated via pinions with a central one Comb gear that is driven by a suitable drive. For this is a spring mechanism that keeps the thread rolls until they come into contact with the workpiece twisted.
  • the rolling process then begins and the frictional connection between turned workpiece and the thread rolls causes the Thread rolling and re-tensioning the spring mechanism.
  • the rolling process takes only one thread roll revolution at a time.
  • the spring mechanism contains a Spring housing that is clamped over a shaft in the machine tool. Pinions of the drive interact with a ring gear, the pinions on Pinions act that are coupled to the shafts of the profile rollers. The latter are in mounted on a gear plate.
  • the axial rolling head is either stationary or revolves while, conversely, the workpiece rotates or stands still. Leave it almost all thread forms can be produced with it, the profile length being unlimited is.
  • the radial roller head has an extremely short thread run-out and Enabling extreme short threads.
  • the processing time is extreme short.
  • the workpiece either stands still or rotates while the rolling head either rotates or stands still.
  • the rolling systems described are often used in so-called machines, who work with short switching times and high accelerations. It understands that the relatively heavy rolling heads limit the switching and machining times put.
  • the invention is therefore based on the object of an axial and / or radial head to create, which allows shorter switching times and higher accelerations.
  • At least the bearing unit and / or the spring housing is formed from titanium or a titanium alloy.
  • a Embodiment of the invention is a switching ring between the coupling section and the spring housing and / or a front plate for mounting the eccentric shafts as well molded from titanium or a titanium alloy.
  • the invention is a ring gear for the pinions sitting on the eccentric shafts also made of titanium or a titanium alloy.
  • the shaft and / or that Spring housing and / or the ring gear and / or the gear plate made of titanium or formed from a titanium alloy.
  • the shaft and / or that Spring housing and / or the ring gear and / or the gear plate made of titanium or formed from a titanium alloy.
  • the shaft and / or that Spring housing and / or the ring gear and / or the gear plate made of titanium or formed from a titanium alloy.
  • the shaft and / or that Spring housing and / or the ring gear and / or the gear plate made of titanium or formed from a titanium alloy.
  • the shaft and / or that Spring housing and / or the ring gear and / or the gear plate made of titanium or formed from a titanium alloy.
  • the shaft and / or that Spring housing and / or the ring gear and / or the gear plate made of titanium or formed from a titanium alloy.
  • the shaft and / or that Spring housing and / or the ring gear and / or the gear plate made of titanium or formed from a
  • those parts are a relative have large mass, but on the other hand no particular stress exposed, formed from the relatively light titanium or a titanium alloy. In this way it is possible to significantly increase the weight of the thread rolling heads reduce by 25 to 30%.
  • Fig. 1 the following parts are listed: driver 1, clutch 2, switching ring 3, Spring housing 4, ring gear 5, tooth arch 6, intermediate plate 7, front plate 8, sleeve 9, bolt 10, coil spring 11, brake blade 12, spring bolt 13, eccentric bolt 14, Spacer 15, ball cage 16, thread roller 18, steel ball 19, carbide bushing 21, feather key 22, compression spring 23, cylinder screw 24, cylinder screw 25, Cylinder screw 26, stud screw 27, cylinder screw 28, hexagon nut 29, Washer 30, spring washer 31, cylindrical pin 33, adapter sleeve 34, screw socket 35, Stop screw 36, hexagon nut 37, ball head 38, hexagon nut 39, handle 40, feather key 41, feather key 42, clamping sleeve 43, locking ring 44, grub screw 45, Grub screw 46, coupling part 49, threaded screw 50.
  • the switching ring 3 the spring housing 4, the Sprocket 5, the intermediate plate 7 and the front plate 8 made of titanium or a titanium alloy.
  • the front panel 8 is expediently only made of a titanium alloy manufactured if it has an appropriate thickness.
  • the radial thread rolling head according to FIG. 2 contains the following parts: gear plate 2, Cover plate 3, front plate 4, synchronous gear 5, central gear 6, adjusting gear 7, Gear ring 8, eccentric pin 9, outer release lever 10, spacer pin 11, drive plate 12, coupling bolt 13, liner 15, feather key 16, tension spring 17, Stop 18, cylinder pin 19, compression spring 20, compression spring 21, thread roller 22, DU bushing 25, hexagon nut 26, washer 27, stud 28, spring pin 29, cylinder pin 30, socket head screw 32, socket head screw 33, DU bushing 34, DU bushing 35, feather key 37, cylinder pin 38, spring housing 42, shaft 45.
  • gear plate 2 front plate 4, ring gear 8, Spring housing 42 and shaft 45 formed from titanium or a titanium alloy.
  • the Front plate 4 is only made from the lighter workpiece if it is a has the appropriate thickness.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Gears, Cams (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Powder Metallurgy (AREA)

Abstract

The rolling head has a bearing unit in which the thread rolls can rotate on eccentric shafts. the main shaft can move axially relative to the beating unit. There is a spiral spring in a casing between the shaft and the bearing unit. At least the bearing unit (7) and the spring casing (4) are made of titanium or a titanium alloy.

Description

Die Erfindung bezieht sich auf einen Gewinderollkopf, insbesondere einen Axialoder Radialgewinderollkopf nach den Ansprüchen 1 und 4.The invention relates to a thread rolling head, in particular an axial or Radial thread rolling head according to claims 1 and 4.

Gewinderollköpfe sind allgemein bekannt. Ein Axialgewinderollkopf ist etwa in DE 44 30 184 offenbart. Wie andere herkömmliche Axialrollköpfe weist er drei um 120° zueinander versetzt angeordnete Profilrollen auf, die in einer Lagereinheit drehbar gelagert sind. Die Lagereinheit wird von einem Schaft gehalten, der in einer Werkzeugmaschine eingespannt ist. Der Rollkopf wird in Drehrichtung festgehalten, kann sich jedoch axial bewegen. Der Rollkopf wird auf das drehende Werkzeug aufgedrückt, wobei der Vorschub durch den axial frei beweglichen Rollkopf erfolgt bei der Formung des Gewindes. Die Profilrollen sind auf Exzenterwellen gelagert, durch deren Betätigung die Rollen mit dem Werkzeug in Eingriff gebracht werden. Die Betätigung der Exzenterwellen erfolgt über Ritzel, die mit einem zentralen Zahnrad kämmen oder mit einem Ringzahnrad, wobei die Betätigung des Ringzahnrads eine Verstellung der Profilrollen relativ zum Werkstück bewirkt. Die Exzenterwellen sind vorzugsweise durch eine Spiralfeder vorgespannt, wobei sie am Ende der Bearbeitung in die Ausgangsstellung vorgespannt werden. Die Spiralfeder ist in einem Federgehäuse gelagert, das einen Kupplungsabschnitt darstellt für eine Klauenkupplung, wobei zwischen diesen Teilen ein Schaltring angeordnet ist, der mit einem ringförmigen Kugelkäfig zusammenwirkt. Eine Frontplatte am vorderen Ende des Axialgewinderollkopfes dient zur Lagerung der Exzenterwellen.Thread rolling heads are generally known. An axial thread rolling head is about in DE 44 30 184 disclosed. Like other conventional axial roller heads, it turns three Profile rollers arranged at 120 ° to each other, in a storage unit are rotatably mounted. The storage unit is held by a shaft that is in a Machine tool is clamped. The rolling head is held in the direction of rotation, can, however, move axially. The rolling head is pressed onto the rotating tool, whereby the feed takes place through the axially freely movable rolling head the formation of the thread. The profile rollers are mounted on eccentric shafts whose actuation brings the rollers into engagement with the tool. The The eccentric shafts are actuated by pinions with a central gear comb or with a ring gear, the actuation of the ring gear a Adjustment of the profile rollers relative to the workpiece. The eccentric shafts are preferably biased by a coil spring, being at the end of processing be biased into the initial position. The coil spring is in one Spring housing mounted, which represents a coupling section for a dog clutch, a switching ring is arranged between these parts, which with an annular ball cage cooperates. A front panel at the front end The axial thread rolling head is used to support the eccentric shafts.

Ein Radialwalzkopf, wie er etwa aus DE 42 36 085 oder DE 197 01 049 bekannt geworden ist, zeichnet sich durch Profilrollen oder -walzen aus, die einen über den Umfang entgegen ihrer Drehrichtung spiralförmig ansteigenden Verlauf ihrer Fläche aufweisen. Die Walzen sind mit einem Zahnradgetriebe gekoppelt, und eine Verriegelung rastet nach jeder vollen Walzenumdrehung selbsttätig aus. Vor dem Walzvorgang wird die Verriegelung gelöst, und zwar von dem Werkstück, das mit den Walzen verformt werden soll. In der Ausgangsstellung liegen abgeflachte Flächen der Walzen einander gegenüber, um dadurch die Einführung des Werkstücks zu ermöglichen. Die Verdrehung der Walzen erfolgt über Ritzel, die mit einem zentralen Zahnrad kämmen, das von einem geeigneten Antrieb angetrieben ist. Hierzu dient ein Federwerk, das die Gewinderollen bis zur Berührung mit dem Werkstück verdreht. Anschließend beginnt der Rollvorgang, und der Reibschluss zwischen gedrehtem Werkstück und den Gewinderollen bewirkt ein Weiterdrehen der Gewinderollen und ein erneutes Spannen des Federwerks. Der Rollvorgang dauert immer nur eine einzige Gewinderollenumdrehung. Das Federwerk enthält ein Federgehäuse, das über einen Schaft in der Werkzeugmaschine eingespannt ist. Ritzel des Antriebs wirken mit einem Zahnkranz zusammen, wobei die Ritzel auf Ritzel wirken, die mit den Wellen der Profilrollen gekoppelt sind. Letztere sind in einer Getriebeplatte gelagert.A radial roller head, as known from DE 42 36 085 or DE 197 01 049 has been characterized by profile rollers or rollers that one over the Circumferentially spiraling course of its surface contrary to its direction of rotation exhibit. The rollers are coupled to a gear train, and a lock disengages automatically after each full rotation of the roller. Before the rolling process the lock is released, namely from the workpiece that with the Rolls to be deformed. In the starting position there are flattened areas of the rollers face each other to thereby introduce the workpiece enable. The rollers are rotated via pinions with a central one Comb gear that is driven by a suitable drive. For this is a spring mechanism that keeps the thread rolls until they come into contact with the workpiece twisted. The rolling process then begins and the frictional connection between turned workpiece and the thread rolls causes the Thread rolling and re-tensioning the spring mechanism. The rolling process takes only one thread roll revolution at a time. The spring mechanism contains a Spring housing that is clamped over a shaft in the machine tool. Pinions of the drive interact with a ring gear, the pinions on Pinions act that are coupled to the shafts of the profile rollers. The latter are in mounted on a gear plate.

Aus den obigen Ausführungen ergibt sich, dass der Axialrollkopf entweder stillsteht oder umläuft, während umgekehrt das Werkstück umläuft oder stillsteht. Es lassen sich nahezu alle Gewindeformen damit herstellen, wobei die Profillänge unbegrenzt ist. Beim Radialrollkopf ergibt sich ein extrem kurzer Gewindeauslauf und die Ermöglichung extremer Kurzgewinde. Außerdem ist die Bearbeitungszeit äußerst kurz. Auch hier steht das Werkstück entweder still oder läuft um, während der Rollkopf entweder umläuft oder stillsteht.It follows from the above statements that the axial rolling head is either stationary or revolves while, conversely, the workpiece rotates or stands still. Leave it almost all thread forms can be produced with it, the profile length being unlimited is. The radial roller head has an extremely short thread run-out and Enabling extreme short threads. In addition, the processing time is extreme short. Here, too, the workpiece either stands still or rotates while the rolling head either rotates or stands still.

Bezüglich weiterer Einzelheiten wird auf den oben genannten Stand der Technik hingewiesen sowie auf die Firmenschrift "Fette Rollsysteme". With regard to further details, reference is made to the above-mentioned prior art pointed out as well as the company lettering "Fette Rollsysteme".

Die beschriebenen Rollsysteme werden häufig in sogenannten Automaten eingesetzt, die mit kurzen Schaltzeiten und hohen Beschleunigungen arbeiten. Es versteht sich, dass die relativ schweren Rollköpfe den Schalt- und Bearbeitungszeiten Grenzen setzen.The rolling systems described are often used in so-called machines, who work with short switching times and high accelerations. It understands that the relatively heavy rolling heads limit the switching and machining times put.

Daher liegt der Erfindung die Aufgabe zugrunde, einen Axial- und/oder Radialkopf zu schaffen, der kürzere Schaltzeiten und höhere Beschleunigungen zulässt.The invention is therefore based on the object of an axial and / or radial head to create, which allows shorter switching times and higher accelerations.

Diese Aufgabe wird durch die Merkmale der Ansprüche 1 und 4 gelöst.This object is solved by the features of claims 1 and 4.

Bei dem Axialgewinderollkopf nach Anspruch 1 ist zumindest die Lagereinheit und/oder das Federgehäuse aus Titan oder einer Titanlegierung geformt. Nach einer Ausgestaltung der Erfindung ist ein Schaltring zwischen Kupplungsabschnitt und dem Federgehäuse und/oder eine Frontplatte zur Lagerung der Exzenterwellen ebenfalls aus Titan oder einer Titanlegierung geformt. Nach einer weiteren Ausgestaltung der Erfindung ist ein Zahnkranz für die auf den Exzenterwellen sitzenden Ritzel ebenfalls aus Titan oder einer Titanlegierung geformt.In the axial thread rolling head according to claim 1, at least the bearing unit and / or the spring housing is formed from titanium or a titanium alloy. After a Embodiment of the invention is a switching ring between the coupling section and the spring housing and / or a front plate for mounting the eccentric shafts as well molded from titanium or a titanium alloy. According to a further embodiment The invention is a ring gear for the pinions sitting on the eccentric shafts also made of titanium or a titanium alloy.

Bei einem Radialgewinderollkopf nach der Erfindung ist der Schaft und/oder das Federgehäuse und/oder der Zahnkranz und/oder die Getriebeplatte aus Titan oder einer Titanlegierung geformt. Nach einer Ausgestaltung der Erfindung ist eine die Walzen lagernde Frontplatte ebenfalls aus Titan oder einer Titanlegierung geformt.In the case of a radial thread rolling head according to the invention, the shaft and / or that Spring housing and / or the ring gear and / or the gear plate made of titanium or formed from a titanium alloy. According to one embodiment of the invention is one Front plate with rollers also formed from titanium or a titanium alloy.

Bei den erfindungsgemäßen Gewinderollköpfen sind diejenigen Teile, die eine relativ große Masse aufweisen, andererseits jedoch keinen besonderen Beanspruchungen ausgesetzt sind, aus dem relativ leichten Titan bzw. einer Titanlegierung geformt. Auf diese Weise ist es möglich, das Gewicht der Gewinderollköpfe deutlich zu reduzieren, und zwar um 25 bis 30%. In the thread rolling heads according to the invention, those parts are a relative have large mass, but on the other hand no particular stress exposed, formed from the relatively light titanium or a titanium alloy. In this way it is possible to significantly increase the weight of the thread rolling heads reduce by 25 to 30%.

Die Erfindung wird nachfolgend anhand von in Zeichnungen dargestellten Ausführungsbeispielen näher erläutert.

Fig. 1
zeigt in Explosionsdarstellung einen Axialgewinderollkopf nach der Erfindung.
Fig. 2
zeigt in Explosionsdarstellung einen Radialgewinderollkopf nach der Erfindung.
The invention is explained in more detail below on the basis of exemplary embodiments illustrated in the drawings.
Fig. 1
shows an exploded view of an axial thread rolling head according to the invention.
Fig. 2
shows an exploded view of a radial thread rolling head according to the invention.

In den Figuren 1 und 2 sind die Teile der dargestellten Rollköpfe alle für sich bekannt, wobei zum Beispiel auf die bereits erwähnte Firmenschrift "Fette Rollsysteme" hingewiesen wird. Gleichwohl sollen die einzelnen Teile der Rollköpfe kurz bezeichnet werden. Bezüglich ihrer Funktion wird auf die bereits oben erwähnten, ebenfalls von der Anmelderin ausgehenden Druckschriften verwiesen. Außerdem ist diese Funktion in der Fachwelt allgemein bekannt.In Figures 1 and 2, the parts of the rolling heads shown are all by themselves known, for example to the company lettering "Fette Rollsysteme" is pointed out. Nevertheless, the individual parts of the roller heads be briefly referred to. Regarding their function, we will refer to the above mentioned publications, also originating from the applicant. In addition, this function is generally known in the specialist world.

In Fig. 1 sind folgende Teile aufgeführt: Mitnehmer 1, Kupplung 2, Schaltring 3, Federgehäuse 4, Zahnkranz 5, Zahnbogen 6, Zwischenplatte 7, Frontplatte 8, Hülse 9, Bolzen 10, Spiralfeder 11, Bremsblatt 12, Federbolzen 13, Exzenterbolzen 14, Distanzbolzen 15, Kugelkäfig 16, Gewinderolle 18, Stahlkugel 19, Hartmetalllaufbuchse 21, Passfeder 22, Druckfeder 23, Zylinderschraube 24, Zylinderschraube 25, Zylinderschraube 26, Stiftschraube 27, Zylinderschraube 28, Sechskantmutter 29, Scheibe 30, Federring 31, Zylinderstift 33, Spannhülse 34, Schraubstutzen 35, Anlageschraube 36, Sechskantmutter 37, Kugelkopf 38, Sechskantmutter 39, Griff 40, Passfeder 41, Passfeder 42, Spannhülse 43, Sicherungsring 44, Gewindestift 45, Gewindestift 46, Kupplungsteil 49, Gewindeschraube 50. In Fig. 1 the following parts are listed: driver 1, clutch 2, switching ring 3, Spring housing 4, ring gear 5, tooth arch 6, intermediate plate 7, front plate 8, sleeve 9, bolt 10, coil spring 11, brake blade 12, spring bolt 13, eccentric bolt 14, Spacer 15, ball cage 16, thread roller 18, steel ball 19, carbide bushing 21, feather key 22, compression spring 23, cylinder screw 24, cylinder screw 25, Cylinder screw 26, stud screw 27, cylinder screw 28, hexagon nut 29, Washer 30, spring washer 31, cylindrical pin 33, adapter sleeve 34, screw socket 35, Stop screw 36, hexagon nut 37, ball head 38, hexagon nut 39, handle 40, feather key 41, feather key 42, clamping sleeve 43, locking ring 44, grub screw 45, Grub screw 46, coupling part 49, threaded screw 50.

Von den in Fig. 1 dargestellten Teilen sind der Schaltring 3, das Federgehäuse 4, der Zahnkranz 5, die Zwischenplatte 7 und die Frontplatte 8 aus Titan oder einer Titanlegierung. Die Frontplatte 8 wird zweckmäßigerweise nur dann aus einer Titanlegierung gefertigt, wenn sie eine entsprechende Dicke aufweist.Of the parts shown in Fig. 1, the switching ring 3, the spring housing 4, the Sprocket 5, the intermediate plate 7 and the front plate 8 made of titanium or a titanium alloy. The front panel 8 is expediently only made of a titanium alloy manufactured if it has an appropriate thickness.

Der Radialgewinderollkopf nach Fig. 2 enthält folgende Teile: Getriebeplatte 2, Deckplatte 3, Frontplatte 4, Synchronzahnrad 5, Mittelzahnrad 6, Verstellzahnrad 7, Zahnkranz 8, Exzenterbolzen 9, äußerer Auslösehebel 10, Distanzbolzen 11, Mitnehmerscheibe 12, Kupplungsbolzen 13, Laufbuchse 15, Passfeder 16, Zugfeder 17, Anschlag 18, Zylinderstift 19, Druckfeder 20, Druckfeder 21, Gewinderolle 22, DU-Buchse 25, Sechskantmutter 26, Scheibe 27, Stiftschraube 28, Spannstift 29, Zylinderstift 30, Zylinderschraube 32, Zylinderschraube 33, DU-Buchse 34, DU-Buchse 35, Passfeder 37, Zylinderstift 38, Federgehäuse 42, Schaft 45.The radial thread rolling head according to FIG. 2 contains the following parts: gear plate 2, Cover plate 3, front plate 4, synchronous gear 5, central gear 6, adjusting gear 7, Gear ring 8, eccentric pin 9, outer release lever 10, spacer pin 11, drive plate 12, coupling bolt 13, liner 15, feather key 16, tension spring 17, Stop 18, cylinder pin 19, compression spring 20, compression spring 21, thread roller 22, DU bushing 25, hexagon nut 26, washer 27, stud 28, spring pin 29, cylinder pin 30, socket head screw 32, socket head screw 33, DU bushing 34, DU bushing 35, feather key 37, cylinder pin 38, spring housing 42, shaft 45.

Von den dargestellten Teilen sind Getriebeplatte 2, Frontplatte 4, Zahnkranz 8, Federgehäuse 42 und Schaft 45 aus Titan bzw. einer Titanlegierung geformt. Die Frontplatte 4 wird nur dann aus dem leichteren Werkstück hergestellt, wenn sie eine entsprechende Dicke aufweist.Of the parts shown, gear plate 2, front plate 4, ring gear 8, Spring housing 42 and shaft 45 formed from titanium or a titanium alloy. The Front plate 4 is only made from the lighter workpiece if it is a has the appropriate thickness.

Claims (5)

Axialgewinderollkopf, mit einer die Gewinderollen aufweisenden Lagereinheit, in der die Gewinderollen über Exzenterwellen drehbar gelagert sind, einem Schaft, der gegenüber der Lagereinheit axial beweglich ist und einen Kupplungsabschnitt aufweist, der in einer ersten axialen Relativposition mit einem Klauenkupplungsabschnitt eines auf dem Schaft drehbar gelagerten ringförmigen Federgehäuses der Lagereinheit zusammenwirkt, wodurch beide Teile drehfest gekuppelt sind, einem ersten Getriebe zwischen dem Schaft und den Exzenterwellen zur Änderung des gegenseitigen Abstandes der Gewinderollen, einer Spiralfeder zwischen Schaft und Lagereinheit derart, dass durch Verdrehung der Lagereinheit gegenüber dem Schaft in eine erste Drehrichtung die Spiralfeder den Schaft und die Lagereinheit aufeinander zu in die erste Relativposition spannt und in einer zweiten axialen Relativposition, in der die Klauenkupplungsabschnitte außer Eingriff sind, die gespannte Spiralfeder die Lagereinheit relativ zum Schaft in eine zweite Drehrichtung verdreht, wodurch über das erste Getriebe der Rollkopf geöffnet wird, sowie mechanischen Schaltmitteln, welche bei Berührung mit einem Werkstück Schaft und Lagereinheit in die zweite Relativposition bringen, dadurch gekennzeichnet, dass zumindest die Lagereinheit (7) und das Federgehäuse (4) aus Titan oder einer Titanlegierung geformt sind.Axial thread rolling head, with a bearing unit having the thread rolls, in which the thread rolls are rotatably mounted via eccentric shafts, a shaft which is axially movable relative to the bearing unit and has a coupling section which, in a first axial relative position, has a claw coupling section of an annularly rotatably mounted on the shaft Spring housing of the bearing unit cooperates, whereby both parts are non-rotatably coupled, a first gear between the shaft and the eccentric shafts for changing the mutual distance between the thread rolls, a spiral spring between the shaft and the bearing unit such that the bearing unit is rotated in a first direction of rotation relative to the shaft Spiral spring tensions the shaft and the bearing unit towards each other in the first relative position and in a second axial relative position in which the claw coupling sections are disengaged, the tensioned spiral spring rela the bearing unit tiv rotated to the shaft in a second direction of rotation, whereby the rolling head is opened via the first gear, and mechanical switching means, which bring the shaft and bearing unit into contact with a workpiece in the second relative position, characterized in that at least the bearing unit (7) and that Spring housing (4) are formed from titanium or a titanium alloy. Axialgewinderollkopf nach Anspruch 1, dadurch gekennzeichnet, dass ein Schaltring (3) zwischen Kupplungsabschnitt (2) und dem Federgehäuse (4) und/oder eine Frontplatte (8) zur Lagerung der Exzenterwellen (14) ebenfalls aus Titan oder einer Titanlegierung geformt sind. Axial thread rolling head according to claim 1, characterized in that a switching ring (3) between the coupling section (2) and the spring housing (4) and / or a front plate (8) for mounting the eccentric shafts (14) are also formed from titanium or a titanium alloy. Axialgewinderollkopf nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein Zahnkranz (5) für die auf den Exzenterwellen (14) sitzenden Ritzel (6) ebenfalls aus Titan oder einer Titanlegierung geformt ist.Axial thread rolling head according to claim 1 or 2, characterized in that a toothed ring (5) for the pinions (6) seated on the eccentric shafts (14) is also formed from titanium or a titanium alloy. Radialwalzkopf mit einem Halter, der unter gleichen Winkelabständen und in Achsabständen um die Walzachse verteilt angeordneten Walzen, deren Walzflächen einen über den Umfang entgegen ihrer Drehrichtung spiralförmig ansteigenden Verlauf haben, mit einem die Walzen miteinander koppelnden Zahnradgetriebe, das mit den Walzen gekoppelte Ritzel und ein mit den Ritzeln kämmendes zentrales Zahnrad aufweist, einer Verriegelung für die Walzen, die nach jeder vollen Walzenumdrehung selbsttätig einrastet und vor jedem Walzvorgang gelöst wird, einem bei der Einführbewegung eines Werkstücks zwischen die Walzen mit dem Werkstück in Eingriff bringbaren, die Verriegelung lösenden Anschlag, und einer Antriebseinrichtung, welche ein Zugfedern aufnehmendes Federgehäuse, einen Schaft, einen Zahnkranz mit Ritzeln für die Rückdrehung der Walzen sowie eine Getriebeplatte für die beiden Zahnradgetriebe aufweist, wobei die Walzen nach dem Lösen der Verriegelung bis zur Anlage der Walzenflächen an das Werkstück drehen, um danach durch Reibung mit diesem weitergedreht zu werden, dadurch gekennzeichnet, dass der Schaft (41) und/oder das Federgehäuse (42) und/oder die Getriebeplatte (2) aus Titan oder einer Titanlegierung geformt sind.Radial roller head with a holder, the rollers, which are arranged at equal angular intervals and at axial intervals around the roller axis, the rolling surfaces of which have a course that rises spirally over the circumference against their direction of rotation, with a gearwheel coupling the rollers together, the pinion coupled with the rollers and one with the pinion-meshing central gear, a locking device for the rollers, which engages automatically after each full roller rotation and is released before each rolling operation, a lock which can be brought into engagement with the workpiece during the insertion movement of a workpiece between the rollers, and a locking release, and one Drive device which has a spring housing receiving tension springs, a shaft, a ring gear with pinions for the reverse rotation of the rollers and a gear plate for the two gearwheels, the rollers after releasing the lock until the roller surface rests hen turn on the workpiece in order to then be further rotated by friction with it, characterized in that the shaft (41) and / or the spring housing (42) and / or the gear plate (2) are formed from titanium or a titanium alloy. Radialgewindewalzkopf nach Anspruch 4, dadurch gekennzeichnet, dass eine die Walzen (22) lagernde Frontplatte (4) ebenfalls aus Titan oder einer Titanlegierung geformt ist.Radial thread rolling head according to claim 4, characterized in that a front plate (4) supporting the rollers (22) is also formed from titanium or a titanium alloy.
EP02000430A 2001-02-13 2002-01-08 Thread rolling head Expired - Lifetime EP1231001B1 (en)

Applications Claiming Priority (2)

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DE20102471U DE20102471U1 (en) 2001-02-13 2001-02-13 Thread rolling head
DE20102471U 2001-02-13

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EP1555072A2 (en) * 2004-01-14 2005-07-20 Fette GmbH Axial thread rolling head
EP2886223A1 (en) * 2013-12-17 2015-06-24 LMT Fette Werkzeugtechnik GmbH & Co. KG Thread rolling head

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US6988388B2 (en) * 2004-03-23 2006-01-24 C.J. Winter Machine Technologies, Inc. Thread rolling attachment
CN100415407C (en) * 2006-09-25 2008-09-03 孙永林 Helical tooth device for rolling steel bar

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DE4022579A1 (en) * 1989-07-25 1991-01-31 Komet Stahlhalter Werkzeug Boring tool with remote diametral adjustment - has finishing tool bit mounted on tilting beam supported against opposed wedges in central drawbar
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EP1555072A2 (en) * 2004-01-14 2005-07-20 Fette GmbH Axial thread rolling head
EP1555072A3 (en) * 2004-01-14 2005-11-09 Fette GmbH Axial thread rolling head
EP2886223A1 (en) * 2013-12-17 2015-06-24 LMT Fette Werkzeugtechnik GmbH & Co. KG Thread rolling head
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ES2215938T3 (en) 2004-10-16
DE50200325D1 (en) 2004-05-13
US20020108418A1 (en) 2002-08-15
DE20102471U1 (en) 2001-04-26
EP1231001B1 (en) 2004-04-07
US6684674B2 (en) 2004-02-03

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