EP0800877A1 - Thread rolling head - Google Patents
Thread rolling head Download PDFInfo
- Publication number
- EP0800877A1 EP0800877A1 EP97105483A EP97105483A EP0800877A1 EP 0800877 A1 EP0800877 A1 EP 0800877A1 EP 97105483 A EP97105483 A EP 97105483A EP 97105483 A EP97105483 A EP 97105483A EP 0800877 A1 EP0800877 A1 EP 0800877A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling head
- thread rolling
- bearing
- bore
- thread
- 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
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
- 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
-
- 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
- B21H3/046—Thread-rolling heads working radially
Definitions
- the invention relates to a thread rolling head according to the preamble of claim 1.
- thread rolling heads There are basically three types of thread rolling heads, namely axial rolling heads, radial rolling heads and tangential rolling heads.
- the axial rolling head has profile rollers with pitch-free profile rings.
- the profile rollers can be swiveled around a horizontal axis, so that the workpiece or the rolling head rotates around by one complete revolution Thread pitch moves axially. Threads of any length can be produced.
- the profile rollers are rotatably mounted on bolts, which in turn are designed eccentrically.
- a gearwheel sits on the bolt and interacts with a central gearwheel in order to adjust the distance between the profile rollers. In this way, the feed can be accomplished before the actual operation.
- the distance between the profile rollers can be changed by the degree of adjustment or by the position of the bolt. Different thread diameters can be produced.
- the profile rollers have a flattening which faces the feed axis of the workpiece in the starting position.
- the profile rollers are rotated through a certain angle with the aid of a spring or the like until frictional engagement with the workpiece is established.
- Continued rotation of the rolling head or the workpiece causes the profile rollers to continue rotating and thereby form the thread.
- the thread is created within a single revolution of the roller.
- the flattened sides of the profile rollers again point to the workpiece so that it can be removed.
- the tangential thread rolling head has two thread rolls, which are moved laterally against the workpiece and form the thread during the advancing feed movement, mainly in the direction tangential to the workpiece.
- the forming process is essentially complete when the axes of the workpiece and the roller are perpendicular to one another.
- the same advantages apply to tangential rolling as to radial rolling, i.e. relatively short machining time and production of threads with a short thread runout.
- threads can be made behind a belt.
- the bearing bolts for the profile rollers are rotatably mounted in two spaced-apart bearing plates.
- the front bearing plate or front plate is, however, a hindrance in several thread forming operations, since it limits the approach of the profile rollers to a collar or the like at least by the thickness of the front plate.
- Another disadvantage is that due to the storage of the profile rollers, the working area, i.e. the range of thread diameters that can be produced using the rolling head is limited.
- the invention has for its object to provide a thread rolling head in which the profile rollers have an extended working area and are nevertheless stably supported.
- the rolling head according to the invention should be suitable for the production of short threads and profiles for screw fittings or similar workpieces in which unfavorable space conditions make rolling difficult.
- the profile rollers are formed in one piece with a bearing pin, which in turn is rotatably mounted for one-sided mounting in a bore in the bearing unit.
- the integral formation of the profile roller and bolt has several advantages as a result. On the one hand, it has a larger work area, for example between 12 and 40 mm outer diameter. Due to the favorable storage conditions between the bearing pin and the hole, a higher stability compared to known front plate-less profile rollers is achieved.
- the bearing pin can be fixed axially by means of a screw fastening.
- a quick change system is preferred, as has become known in many versions.
- the profiled roller and the bearing pin have an axial bore in which a locking pin is arranged with a conical locking surface, which in turn acts on a locking element which sits radially displaceably in a radial bore of the bearing pin and the bearing bore has an annular groove in which rotates around the locking element when the profile roller rotates.
- the locking bolt is preferably acted upon by a spring, as a result of which the conical locking surface constantly keeps the locking element in engagement with the groove. If the locking pin is adjusted axially, the locking element can move radially inwards, so that the locking between the bearing pin and the bore is released. As a result, the profile roller with the bearing pin can be removed from the bore and replaced by another.
- the invention is particularly suitable for axial and radial thread rolling heads.
- An adjustment of the profile rollers in the radial direction is provided in both.
- the profile rollers are adjusted radially outwards when a workpiece is to be inserted between the rollers.
- the profile rollers are moved to adjust the center distance.
- this is done in that the bearing pin for the profile roller is designed eccentrically and is received in a bore. If the bearing pin is rotated, for example with the aid of a suitable gear, the profile roller is also adjusted radially.
- the bearing pin is rotatably mounted in a bushing which is designed eccentrically. If the bush is rotated about its axis in a conventional manner, the axis of the bearing pin of the profile roller is shifted. While in the known axial thread rolling head the bearing pin carries a gear which can be set in rotation via a central gear, the bushing can be provided with a pin on which the gear is arranged according to one embodiment of the invention.
- the actuation of an axial thread rolling head in the embodiment according to the invention does not otherwise differ from a known axial thread rolling head. The same applies to the radial thread rolling head, which is formed with the profile rollers according to the invention.
- the single figure shows an axial thread rolling head according to the invention in section.
- An annular plate 10 is clamped against an annular disk 14 by means of clamping bolts, one of which is shown at 12, while pressing against a flange 16.
- the plate 10 has three axially parallel through-holes, one of which is shown at 18, seen in the circumferential direction.
- the bores 18 receive a bushing 20 which is closed at one end and is rotatably supported by means of needle bearings 22.
- the hole the socket is arranged eccentrically. It receives a bearing pin 24 which is formed in one piece with a profile roller 26.
- the bearing pin is supported in the bore of the bushing 20 via needle bearings 28 and 30 at the front and rear ends.
- An axial needle bearing 32 is arranged between the associated side of the roller 28 and the plate 10 or the bush 20.
- Roller 26 and bearing pin 24 have an axial through bore 34, in which a locking pin 36 is slidably mounted with a double cone surface 38 in the area of a radial bore 40 in the bearing pin 24, in which a locking element 42 is seated, which is formed inside and outside spherical cap.
- the outer end of the locking element 42 engages in a complementarily shaped annular groove 42a.
- a plug 44 is screwed into the left end of the bore 34.
- a spring 46 is arranged between the plug 44 and the associated end of the locking pin 36.
- the locking element 42 is thereby pressed in constant engagement with the groove 42a, so that the profile roller 26 is axially secured. If the profile roller is to be removed, the pin 36 is pressed in the direction of arrow F, so that the locking element can be moved radially inwards and the bearing pin 24 is pulled out.
- a bearing pin 48 is formed on which a gear 50 is arranged.
- the gear wheel 50 meshes with a central wheel 52, which is seated on a stub shaft 54 of a coupling part 56, which cooperates with a coupling part 58.
- the coupling parts 56, 58 form a dog clutch.
- the coupling part 58 is connected to a shaft 60 with which the thread rolling head shown in the figure can be clamped in a machine tool.
- a spiral spring 62 is arranged between the flange 16 and the stub shaft 54. If the coil spring is tensioned, it tries to turn the gear wheel 52, which also rotates the bushing 20 and thereby changes the distance between the profile rollers 26.
- the trigger mechanism for the measure described is not shown. He is also known per se.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Pinball Game Machines (AREA)
Abstract
Gewinderollkopf mit mindestens zwei ein Formgewinde aufweisenden Profilrollen (26), die in einer Lagereinheit drehbar gelagert sind, und einer Vorschubeinrichtung, die die Profilrollen (26) mit einem zylindrischen Werkstück in Eingriff und außer Eingriff bringt, wobei die Profilrollen einteilig mit Lagerbolzen (24) geformt sind, die zur einseitigen Lagerung der Profilrollen (26) in der Bohrung der Lagereinheit drehbar gelagert ist. <IMAGE>Thread rolling head with at least two profiled rollers (26) having a form thread, which are rotatably mounted in a bearing unit, and a feed device which engages and disengages the profiled rollers (26) with a cylindrical workpiece, the profiled rollers being in one piece with bearing bolts (24) are formed, which is rotatably mounted for one-sided mounting of the profile rollers (26) in the bore of the bearing unit. <IMAGE>
Description
Die Erfindung bezieht sich auf einen Gewinderollkopf nach dem Oberbegriff des Anspruchs 1.The invention relates to a thread rolling head according to the preamble of claim 1.
Es ist bekannt, Gewinde mit Hilfe von sogenannten Gewinderollköpfen zu fertigen. Man unterscheidet grundsätzlich drei Typen von Gewinderollköpfen, nämlich Axialrollkopf, Radialrollkopf und Tangentialrollkopf. Im ersteren Fall, der zum Beispiel durch G 93 13 282 bekanntgeworden ist, weist der Axialrollkopf Profilrollen mit steigungsfreien Profilringen auf. Die Profilrollen können um eine horizontale Achse geschwenkt werden, so daß sich das Werkstück bzw. der Rollkopf bei einer vollständigen Umdrehung um die Gewindesteigung axial verschiebt. Es lassen sich beliebig lange Gewinde herstellen. Die Profilrollen sind auf Bolzen drehbar gelagert, die ihrerseits exzentrisch ausgeführt sind. Ein Zahnrad sitzt auf dem Bolzen und wirkt mit einem zentrischen Zahnrad zusammen, um die Profilrollen bezüglich ihres Abstands voneinander zu verstellen. Auf diese Weise läßt sich der Vorschub vor dem eigentlichen Arbeitsgang bewerkstelligen. Außerdem läßt sich durch das Maß der Verstellung bzw. durch die Lage des Bolzens der Abstand zwischen den Profilrollen verändern. Somit können verschiedene Gewindedurchmesser produziert werden.It is known to produce threads using so-called thread rolling heads. There are basically three types of thread rolling heads, namely axial rolling heads, radial rolling heads and tangential rolling heads. In the former case, which has become known, for example, from G 93 13 282, the axial rolling head has profile rollers with pitch-free profile rings. The profile rollers can be swiveled around a horizontal axis, so that the workpiece or the rolling head rotates around by one complete revolution Thread pitch moves axially. Threads of any length can be produced. The profile rollers are rotatably mounted on bolts, which in turn are designed eccentrically. A gearwheel sits on the bolt and interacts with a central gearwheel in order to adjust the distance between the profile rollers. In this way, the feed can be accomplished before the actual operation. In addition, the distance between the profile rollers can be changed by the degree of adjustment or by the position of the bolt. Different thread diameters can be produced.
Bei den Radialrollköpfen, wie sie zum Beispiel aus DE 42 36 085 bekanntgeworden sind, weisen die Profilrollen eine Abflachung auf, die in der Ausgangsstellung der Vorschubachse des Werkstücks zugekehrt ist. Während des Bearbeitungsvorgangs werden die Profilrollen mit Hilfe einer Feder oder dergleichen um einen gewissen Winkel gedreht, bis Reibschluß mit dem Werkstück hergestellt ist. Eine Weiterdrehung des Rollkopfes bzw. des Werkstücks führt dazu, daß die Profilrollen weiterdrehen und dadurch das Gewinde formen. Das Gewinde wird innerhalb einer einzigen Rollenumdrehung erzeugt. Nach Beendigung des Formvorgangs weisen die abgeflachten Seiten der Profilrollen wieder dem Werkstück zu, so daß es entnommen werden kann.In the case of the radial roller heads, as have become known, for example, from
Der Tangentialgewinderollkopf besitzt zwei Gewinderollen, die seitlich gegen das Werkstück gefahren werden und während der fortschreitenden Vorschubbewegung vorwiegend in der zum Werkstück tangentialen Richtung das Gewinde formen. Der Umformvorgang ist im wesentlichen beendet, wenn die Achsen von Werkstück und Rolle senkrecht übereinander stehen. Beim Tangentialrollen kommen die gleichen Vorteile wie beim Radialrollen zur Geltung, d.h. relativ kurze Bearbeitungszeit und Herstellen von Gewinden mit kurzem Gewindeauslauf. Außerdem können Gewinde hinter einem Band hergestellt werden.The tangential thread rolling head has two thread rolls, which are moved laterally against the workpiece and form the thread during the advancing feed movement, mainly in the direction tangential to the workpiece. The forming process is essentially complete when the axes of the workpiece and the roller are perpendicular to one another. The same advantages apply to tangential rolling as to radial rolling, i.e. relatively short machining time and production of threads with a short thread runout. In addition, threads can be made behind a belt.
Bei den herkömmlichen Gewinderollköpfen sind die Lagerbolzen für die Profilrollen in zwei auf Abstand gehaltenen Lagerplatten drehbar gelagert. Die vordere Lagerplatte oder Frontplatte ist jedoch bei etlichen Gewindeformvorgängen hinderlich, da sie das Heranführen der Profilrollen an einen Bund oder dergleichen zumindest um die Dicke der Frontplatte begrenzt. Nachteilig ist ferner, daß aufgrund der Lagerung der Profilrollen der Arbeitsbereich, d.h. der Bereich der Gewindedurchmesser, der mit Hilfe des Rollkopfs hergestellt werden kann, begrenzt ist.In the conventional thread rolling heads, the bearing bolts for the profile rollers are rotatably mounted in two spaced-apart bearing plates. The front bearing plate or front plate is, however, a hindrance in several thread forming operations, since it limits the approach of the profile rollers to a collar or the like at least by the thickness of the front plate. Another disadvantage is that due to the storage of the profile rollers, the working area, i.e. the range of thread diameters that can be produced using the rolling head is limited.
Aus EP 0 417 416 ist auch ein frontplattenloser Axialgewinderollkopf bekanntgeworden. Die einseitige Lagerung der Profilrollen bedingt indessen, daß der Lagerbolzen in seiner Dicke ein Mindestmaß nicht unterschreiten darf. Dadurch ist auch bei frontplattenlosen Gewinderollköpfen nach dem Stand der Technik der Arbeitsbereich begrenzt.From EP 0 417 416 an axial thread rolling head without a front plate has also become known. The one-sided storage of the Profile rollers mean, however, that the thickness of the bearing pin must not be less than a minimum. As a result, the work area is also limited in the case of threaded roller heads without front plates according to the prior art.
Der Erfindung liegt die Aufgabe zugrunde, einen Gewinderollkopf zu schaffen, bei dem die Profilrollen einen erweiterten Arbeitsbereich aufweisen und gleichwohl stabil gelagert sind. Außerdem soll der erfindungsgemäße Rollkopf zur Herstellung von Kurzgewinden und Profilen für Verschraubungsstücke oder ähnliche Werkstücke geeignet sein, bei denen ungünstige Platzverhältnisse das Rollen erschweren.The invention has for its object to provide a thread rolling head in which the profile rollers have an extended working area and are nevertheless stably supported. In addition, the rolling head according to the invention should be suitable for the production of short threads and profiles for screw fittings or similar workpieces in which unfavorable space conditions make rolling difficult.
Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.This object is solved by the features of claim 1.
Beim erfindungsgemäßen Gewinderollkopf sind die Profilrollen einteilig mit einem Lagerbolzen geformt, der seinerseits zur einseitigen Lagerung in einer Bohrung der Lagereinheit drehbar gelagert ist.In the thread rolling head according to the invention, the profile rollers are formed in one piece with a bearing pin, which in turn is rotatably mounted for one-sided mounting in a bore in the bearing unit.
Die integrale Ausbildung von Profilrolle und Bolzen hat mehrere Vorteile im Gefolge. Zum einen weist sie einen größeren Arbeitsbereich auf, beispielsweise zwischen 12 und 40 mm Außendurchmesser. Durch die günstigen Lagerungsverhältnisse zwischen Lagerbolzen und Bohrung wird eine höhere Stabilität gegenüber bekannten frontplattenlosen Profilrollen erreicht.The integral formation of the profile roller and bolt has several advantages as a result. On the one hand, it has a larger work area, for example between 12 and 40 mm outer diameter. Due to the favorable storage conditions between the bearing pin and the hole, a higher stability compared to known front plate-less profile rollers is achieved.
Der Lagerbolzen kann mittels einer Schraubbefestigung axial festgelegt werden. Vorzuziehen ist indessen ein Schnellwechselsystem, wie es in vielen Ausführungen bekanntgeworden ist. Eine kann erfindungsgemäß darin bestehen, daß Profilrolle und Lagerbolzen eine axiale Bohrung aufweisen, in der ein Verriegelungsstift angeordnet ist mit einer konischen Verriegelungsfläche, die ihrerseits auf ein Verriegelungselement wirkt, das radial verschiebbar in eine Radialbohrung des Lagerbolzens sitzt und die Lagerbohrung eine Ringnut aufweist, in der das Verriegelungselement umläuft, wenn die Profilrolle sich dreht. Der Verriegelungsbolzen wird vorzugsweise von einer Feder beaufschlagt, wodurch die konische Verriegelungsfläche das Verriegelungselement ständig mit der Nut in Eingriff hält. Wird der Verriegelungsstift axial verstellt, kann das Verriegelungselement radial nach innen ausweichen, so daß die Verriegelung zwischen Lagerbolzen und Bohrung aufgehoben wird. Dadurch kann die Profilrolle mit dem Lagerbolzen aus der Bohrung herausgenommen und durch eine andere ersetzt werden.The bearing pin can be fixed axially by means of a screw fastening. However, a quick change system is preferred, as has become known in many versions. According to the invention, one can consist in that the profiled roller and the bearing pin have an axial bore in which a locking pin is arranged with a conical locking surface, which in turn acts on a locking element which sits radially displaceably in a radial bore of the bearing pin and the bearing bore has an annular groove in which rotates around the locking element when the profile roller rotates. The locking bolt is preferably acted upon by a spring, as a result of which the conical locking surface constantly keeps the locking element in engagement with the groove. If the locking pin is adjusted axially, the locking element can move radially inwards, so that the locking between the bearing pin and the bore is released. As a result, the profile roller with the bearing pin can be removed from the bore and replaced by another.
Die Erfindung ist insbesondere für Axial- und Radialgewinderollköpfe geeignet. In beiden ist eine Verstellung der Profilrollen in radialer Richtung vorgesehen. Bei dem Axialgewinderollkopf wird eine Verstellung der Profllrollen radial nach außen vorgenommen, wenn ein Werkstück zwischen die Rollen eingeführt werden soll. Bei dem Radialgewinderollkopf erfolgt eine Verschiebung der Profilrollen zur Einstellung des Achsabstandes. Bei bekannten Axialgewinderollköpfen erfolgt dies dadurch, daß der Lagerbolzen für die Profilrolle exzentrisch ausgeführt und in einer Bohrung aufgenommen ist. Wird der Lagerbolzen verdreht, beispielsweise mit Hilfe eines geeigneten Getriebes, erfolgt auch eine Radialverstellung der Profilrolle.The invention is particularly suitable for axial and radial thread rolling heads. An adjustment of the profile rollers in the radial direction is provided in both. With the axial thread rolling head, the profile rollers are adjusted radially outwards when a workpiece is to be inserted between the rollers. In the case of the radial thread rolling head, the profile rollers are moved to adjust the center distance. In known axial thread rolling heads, this is done in that the bearing pin for the profile roller is designed eccentrically and is received in a bore. If the bearing pin is rotated, for example with the aid of a suitable gear, the profile roller is also adjusted radially.
Bei einer Ausgestaltung der Erfindung ist der Lagerbolzen in einer Buchse drehbar gelagert, die exzentrisch ausgeführt ist. Wird die Buchse in herkömmlicher Weise um ihre Achse verdreht, verlagert sich dadurch die Achse des Lagerbolzens der Profilrolle. Während bei dem bekannten Axialgewinderollkopf der Lagerbolzen unmittelbar ein Zahnrad trägt, das über ein Mittenzahnrad in Drehung versetzt werden kann, kann nach einer Ausgestaltung der Erfindung die Buchse mit einem Zapfen versehen werden, auf dem das Zahnrad angeordnet ist. Die Betätigung eines Axialgewinderollkopfs in erfindungsgemäßer Ausführung unterscheidet sich im übrigen nicht von einem bekannten Axialgewinderollkopf. Das gleiche trifft auf den Radialgewinderollkopf zu, der mit den erfindungsgemäßen Profilrollen ausgebildet ist.In one embodiment of the invention, the bearing pin is rotatably mounted in a bushing which is designed eccentrically. If the bush is rotated about its axis in a conventional manner, the axis of the bearing pin of the profile roller is shifted. While in the known axial thread rolling head the bearing pin carries a gear which can be set in rotation via a central gear, the bushing can be provided with a pin on which the gear is arranged according to one embodiment of the invention. The actuation of an axial thread rolling head in the embodiment according to the invention does not otherwise differ from a known axial thread rolling head. The same applies to the radial thread rolling head, which is formed with the profile rollers according to the invention.
Die Erfindung wird nachfolgend anhand einer Zeichnung näher erläutert.The invention is explained in more detail below with the aid of a drawing.
Die einzige Figur zeigt im Schnitt einen Axialgewinderollkopf nach der Erfindung.The single figure shows an axial thread rolling head according to the invention in section.
Eine ringförmige Platte 10 ist über Spannbolzen, von denen einer bei 12 dargestellt ist, gegen eine Ringscheibe 14 gespannt unter Anpressung eines Flansches 16. Die Platte 10 hat in Umfangsrichtung gesehen drei achsparallele Durchbohrungen, von denen eine bei 18 dargestellt ist. Die Bohrungen 18 nehmen eine einendig geschlossene Buchse 20 auf, die mittels Nadellager 22 drehbar gelagert ist. Die Bohrung der Buchse ist exzentrisch angeordnet. Sie nimmt einen Lagerbolzen 24 auf, der einteilig mit einer Profilrolle 26 geformt ist. Die Lagerung des Lagerbolzens in der Bohrung der Buchse 20 erfolgt über Nadellager 28 bzw. 30 am vorderen und hinteren Ende. Ein Axialnadellager 32 ist zwischen der zugeordneten Seite der Rolle 28 und der Platte 10 bzw. der Buchse 20 angeordnet.An
Rolle 26 und Lagerbolzen 24 haben eine axiale Durchbohrung 34, in der ein Verriegelungsstift 36 gleitend gelagert ist mit einer Doppelkonusfläche 38 im Bereich einer radialen Bohrung 40 im Lagerbolzen 24, in der ein Verriegelungselement 42 sitzt, das innen und außen kugelkappenförmig ausgebildet ist. Das äußere Ende des Verriegelungselements 42 greift in eine komplementär geformte Ringnut 42a ein. In das linke Ende der Bohrung 34 ist ein Stopfen 44 geschraubt. Zwischen Stopfen 44 und dem zugeordneten Ende des Verriegelungsstiftes 36 ist eine Feder 46 angeordnet. Wie erkennbar, wird dadurch das Verriegelungselement 42 in ständigem Eingriff mit der Nut 42a gedrückt, so daß die Profilrolle 26 axial gesichert ist. Soll die Profilrolle entfernt werden, wird der Stift 36 in Richtung Pfeil F gedrückt, so daß das Verriegelungselement radial nach innen bewegt werden kann und der Lagerbolzen 24 herausgezogen.
Am geschlossenen Ende der Buchse 20 ist ein Lagerzapfen 48 angeformt, auf dem ein Zahnrad 50 angeordnet ist. Das Zahnrad 50 kämmt mit einem Zentralrad 52, das auf einen Wellenstummel 54 eines Kupplungsteils 56 sitzt, das mit einem Kupplungsteil 58 zusammenwirkt. Die Kupplungsteile 56, 58 bilden eine Klauenkupplung. Das Kupplungsteil 58 ist mit einem Schaft 60 verbunden, mit dem der in der Figur gezeigte Gewinderollkopf in eine Werkzeugmaschine eingespannt werden kann.At the closed end of the
Zwischen dem Flansch 16 und dem Wellenstummel 54 ist eine Spiralfeder 62 angeordnet. Ist die Spiralfeder gespannt, versucht sie das Zahnrad 52 zu drehen, wodurch auch die Buchse 20 gedreht wird und sich dadurch der Abstand zwischen den Profilrollen 26 ändert. Der Auslösemechanismus für die beschriebene Maßnahme ist nicht gezeigt. Er ist auch an sich bekannt. Beim Erreichen des Endes des zu formenden Gewindes am zylindrischen Werkstück werden die Kupplungsteile 56, 58 außer Eingriff gebracht, so daß mit Hilfe der vorher gespannten Feder 62 die Profilrollen 26 radial auseinandergefahren werden, damit das Werkstück auf den Gewinderollkopf herausfahren kann.A
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29606684U | 1996-04-12 | ||
| DE29606684U DE29606684U1 (en) | 1996-04-12 | 1996-04-12 | Thread rolling head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0800877A1 true EP0800877A1 (en) | 1997-10-15 |
| EP0800877B1 EP0800877B1 (en) | 2000-08-02 |
Family
ID=8022497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97105483A Expired - Lifetime EP0800877B1 (en) | 1996-04-12 | 1997-04-02 | Thread rolling head |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5870918A (en) |
| EP (1) | EP0800877B1 (en) |
| DE (2) | DE29606684U1 (en) |
| ES (1) | ES2149525T3 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20102471U1 (en) * | 2001-02-13 | 2001-04-26 | Fette Wilhelm Gmbh | Thread rolling head |
| DE202004000424U1 (en) * | 2004-01-14 | 2004-04-01 | Fette Gmbh | axial thread |
| CN103521666B (en) | 2012-10-08 | 2017-08-11 | 上海泛华紧固系统有限公司 | A kind of milled head and its equipment for being used to roll pipe screw thread and the pipe cylinder blank of application equipment processing |
| CN103223453A (en) | 2013-03-31 | 2013-07-31 | 上海泛华紧固系统有限公司 | Method and device for directly rolling steel pipe standard outer diameter to form taper pipe external thread, and product of taper pipe external thread |
| ES2965734T3 (en) | 2016-12-13 | 2024-04-16 | Shanghai Pan China Fastening System Co Ltd | Procedure, process module and apparatus for rolling an external pipe thread |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2150815A (en) * | 1937-09-30 | 1939-03-14 | Berger Kornel | Screw-threaded stock and manufacture of same |
| FR1065418A (en) * | 1951-10-29 | 1954-05-25 | Device for rolling screw threads on lathes in the metallurgical industry | |
| CH394096A (en) * | 1962-06-29 | 1965-06-30 | Schaeublin Ernst | Thread rolling tool |
| CH582028A5 (en) * | 1974-09-05 | 1976-11-30 | Lechot Andre | Thread cutting tool for small screws - has each cutter rotating on spindle with out head, giving longer threaded portion |
| FR2448949A1 (en) * | 1979-02-16 | 1980-09-12 | Hydexco | Die for thread rolling - has heads mounted eccentrically on spindles to allow pivoting to release workpiece |
| US4924687A (en) * | 1989-10-16 | 1990-05-15 | C. J. Winter Machine Works, Inc. | Quick release thread roll support |
| EP0417416A2 (en) * | 1989-09-09 | 1991-03-20 | Wilhelm Fette GmbH | Axial thread rolling head |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US541551A (en) * | 1895-06-25 | Mechanism for rolling threads on bars or rods | ||
| CH595173A5 (en) * | 1975-12-23 | 1978-01-31 | Harold Habegger | |
| US5167136A (en) * | 1991-08-09 | 1992-12-01 | C. J. Winter Machine Works, Inc. | Thread roll attachment |
| DE4236085C2 (en) * | 1992-10-26 | 1995-04-06 | Fette Wilhelm Gmbh | Radial roller head |
| DE9313282U1 (en) * | 1993-09-03 | 1993-12-09 | Fette Wilhelm Gmbh | Axial thread rolling head |
-
1996
- 1996-04-12 DE DE29606684U patent/DE29606684U1/en not_active Expired - Lifetime
-
1997
- 1997-04-02 EP EP97105483A patent/EP0800877B1/en not_active Expired - Lifetime
- 1997-04-02 DE DE59702096T patent/DE59702096D1/en not_active Expired - Fee Related
- 1997-04-02 ES ES97105483T patent/ES2149525T3/en not_active Expired - Lifetime
- 1997-04-09 US US08/833,760 patent/US5870918A/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2150815A (en) * | 1937-09-30 | 1939-03-14 | Berger Kornel | Screw-threaded stock and manufacture of same |
| FR1065418A (en) * | 1951-10-29 | 1954-05-25 | Device for rolling screw threads on lathes in the metallurgical industry | |
| CH394096A (en) * | 1962-06-29 | 1965-06-30 | Schaeublin Ernst | Thread rolling tool |
| CH582028A5 (en) * | 1974-09-05 | 1976-11-30 | Lechot Andre | Thread cutting tool for small screws - has each cutter rotating on spindle with out head, giving longer threaded portion |
| FR2448949A1 (en) * | 1979-02-16 | 1980-09-12 | Hydexco | Die for thread rolling - has heads mounted eccentrically on spindles to allow pivoting to release workpiece |
| EP0417416A2 (en) * | 1989-09-09 | 1991-03-20 | Wilhelm Fette GmbH | Axial thread rolling head |
| US4924687A (en) * | 1989-10-16 | 1990-05-15 | C. J. Winter Machine Works, Inc. | Quick release thread roll support |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2149525T3 (en) | 2000-11-01 |
| US5870918A (en) | 1999-02-16 |
| EP0800877B1 (en) | 2000-08-02 |
| DE29606684U1 (en) | 1996-07-11 |
| DE59702096D1 (en) | 2000-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2259143B2 (en) | Roll stand for rolling essentially rod-shaped material | |
| DE10005578C2 (en) | Method and pressure rolling device for producing a hollow body | |
| DE3131107A1 (en) | Device for adjusting the axis of rotation of a joint for the swivellable suspension of a radius arm of a wheel on the body of a motor vehicle | |
| EP0955110B1 (en) | Method and device for flow-turning | |
| DE2908422C2 (en) | Honing or lapping head | |
| EP0800877B1 (en) | Thread rolling head | |
| DE540061C (en) | Machine for the production of highly elastic spring tubes | |
| DE2821888B1 (en) | Device for calibrating metal blocks | |
| DE102007029548B3 (en) | Tool assembly for shaping tubular workpiece outer surfaces, without material removal, allows shaping rollers to be used on the axis bolt by changing the spacer rings without altering the dimensions to reduce wear | |
| DE4432084C2 (en) | Process and tool for removing and installing a rolling ring | |
| EP2343138B1 (en) | Method and device for forming workpieces | |
| DE862139C (en) | Rolling mill for rolling seamless tubes from hollow blocks | |
| DE19623866C2 (en) | Method and device for producing rotationally symmetrical workpieces, in particular vehicle wheels | |
| DE972575C (en) | Device for cold bending thin-walled metal pipes | |
| DD226790A1 (en) | DEVICE FOR COMBINED SHAPING AND CUTTING PRESSURE | |
| AT127763B (en) | Machine for the production of highly elastic spring tubes. | |
| DE4431500C2 (en) | Method for producing a rotationally symmetrical workpiece made of metal by pressing and device for carrying out the method | |
| EP1555072B1 (en) | Axial thread rolling head | |
| DE19827499C2 (en) | Flow-forming roll assembly | |
| DE102007011336B4 (en) | Rotary drivable cutting head | |
| EP0429815A1 (en) | Device for forming of a flange or similar, in particular at the end of a thin walled metalpipe | |
| DE556916C (en) | Longitudinal ball bearings | |
| EP1163961B1 (en) | Method and apparatus for manufacturing a gearing element | |
| DE1963150C3 (en) | System for straightening workpieces designed as rotating bodies with gradations | |
| EP0235323A1 (en) | Apparatus and method for straightening a hollow cylindrical work piece |
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): CH DE ES FR GB IT LI |
|
| 17P | Request for examination filed |
Effective date: 19971024 |
|
| 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 |
|
| 17Q | First examination report despatched |
Effective date: 19991209 |
|
| 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): CH DE ES FR GB IT LI |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: ISLER & PEDRAZZINI AG Ref country code: CH Ref legal event code: EP |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20000802 |
|
| REF | Corresponds to: |
Ref document number: 59702096 Country of ref document: DE Date of ref document: 20000907 |
|
| ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN P. & C. S.N.C. |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2149525 Country of ref document: ES Kind code of ref document: T3 |
|
| ET | Fr: translation 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 | ||
| 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: ES Payment date: 20070322 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20070328 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20070509 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20070613 Year of fee payment: 11 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PCAR Free format text: ISLER & PEDRAZZINI AG;POSTFACH 1772;8027 ZUERICH (CH) |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20070614 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20070329 Year of fee payment: 11 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20080402 |
|
| 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: 20080430 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081101 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080430 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20081231 |
|
| 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: 20080430 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20080403 |
|
| 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: 20080402 |
|
| 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: 20080403 |
|
| 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: 20080402 |