EP0800877B1 - Thread rolling head - Google Patents
Thread rolling head Download PDFInfo
- Publication number
- EP0800877B1 EP0800877B1 EP97105483A EP97105483A EP0800877B1 EP 0800877 B1 EP0800877 B1 EP 0800877B1 EP 97105483 A EP97105483 A EP 97105483A EP 97105483 A EP97105483 A EP 97105483A EP 0800877 B1 EP0800877 B1 EP 0800877B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thread rolling
- rolling head
- profile
- bore
- mounting bolt
- 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
Links
- 238000005096 rolling process Methods 0.000 title claims description 32
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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 the preamble of claim 1 (see e.g. CH-A-582 028).
- thread rolling heads It is known to thread using so-called thread rolling heads to manufacture.
- three types of thread rolling heads namely axial rolling heads, Radial roller head and tangential roller head.
- the axial roller head has profile rollers with pitch-free Profile rings on.
- the profile rolls can be horizontal Axis are pivoted so that the workpiece or the rolling head with a complete rotation around the Thread pitch moves axially. It can be any Make long threads.
- the profile rollers are on bolts rotatably mounted, which in turn is eccentric are. A gear sits on the bolt and works with you centric gear together to form the profile rollers their distance from each other. To this In this way, the feed can be carried out before the actual operation accomplish.
- the degree of Adjustment or by the position of the bolt the distance change between the profile rolls. So different Thread diameters are produced.
- the profile rollers have a Flattening on that in the starting position of the feed axis the workpiece is turned.
- the profile rollers with the help of a spring or the like rotated through a certain angle until Friction with the workpiece is made.
- Another spin of the rolling head or the workpiece leads to the fact that continue turning the profile rollers and thereby forming the thread.
- the thread is within a single roll revolution generated. Point at the end of the molding process the flattened sides of the profile rollers back to the workpiece to so that it can be removed.
- the tangential thread rolling head has two thread rolls, which are driven sideways against the workpiece and during the advancing feed movement mainly in form the thread in the direction tangential to the workpiece.
- the forming process is essentially complete when the The axes of the workpiece and roller are vertically one above the other.
- tangential rolling as with radial rolling, i.e. relatively short processing time and producing threads with a short thread runout. You can also thread behind a collar getting produced.
- the bearing bolts are for the profile rollers in two spaced apart Bearing plates rotatably mounted.
- the front bearing plate or front plate is involved in several thread forming processes a hindrance because they bring the profile rolls up to a collar or the like at least by the thickness of the Front panel limited.
- Another disadvantage is that due to the storage of the profile rolls of the work area, i.e. the Area of thread diameter using the rolling head 5 can be produced is limited.
- EP 0 417 416 also discloses an axial thread rolling head without a front plate known.
- the one-sided storage of the Profile rollers meanwhile requires that the bearing pin in its Thickness must not be less than a minimum. Thereby is also for threaded roller heads without front plates the working area is limited according to the state of the art.
- the invention has for its object a thread rolling head to create, in which the profile roles an extended Have work area and still stable are stored.
- the rolling head according to the invention for the production of short threads and profiles for screw fittings or similar workpieces, where unfavorable space conditions make it difficult to roll.
- the profile rollers are molded in one piece with a bearing pin, which in turn for one-sided storage in a hole in the bearing unit is rotatably mounted.
- profile roller and bolt has several advantages in the wake. For one thing, it shows one larger work area, for example between 12 and 40 mm outer diameter. Due to the favorable storage conditions between the bearing pin and the bore higher stability compared to known front panelless Profile rolls reached.
- the bearing pin can be screwed be fixed axially.
- Quick-change system as has become known in many versions is.
- the Locking bolt is preferably acted upon by a spring, whereby the conical locking surface that Locking element constantly engages with the groove. If the locking pin is adjusted axially, the locking element can dodge radially inwards so that the Interlock between the bearing pin and the hole is released becomes. This allows the profile roller with the bearing pin removed the hole and replaced it with another one become.
- the invention is particularly for axial and radial thread rolling heads suitable. There is an adjustment in both the profile rollers are provided in the radial direction.
- Axial thread rolling head becomes an adjustment of the profile rollers made radially outward when a workpiece is between the roles to be introduced.
- With the radial thread rolling head the profile rollers are shifted for setting the center distance.
- With known axial thread rolling heads this is done in that the bearing pin for the profile roll eccentric and in one Hole is added. If the bearing pin is turned, for example with the help of a suitable gear also a radial adjustment of the profile roller.
- the bearing pin rotatably mounted in a bushing that is eccentric is. Will the jack in a conventional manner to their If the axis is twisted, the axis of the bearing pin will shift the profile role.
- a gear carries which rotates via a central gear can be
- the socket with a pin on which the Gear is arranged is, according to an embodiment of the invention the socket with a pin on which the Gear is arranged.
- the actuation of an axial thread rolling head differs in execution according to the invention does not differ from a known axial thread rolling head. The same applies to the radial thread rolling head to who is trained with the profile rollers according to the invention is.
- An annular plate 10 is over clamping bolts, one of which one is shown at 12, against an annular disk 14 clamped by pressing a flange 16.
- the plate 10 has three axially parallel bores seen in the circumferential direction, one of which is shown at 18.
- the holes 18 receive a socket 20 closed at one end, which is rotatably mounted by means of needle bearings 22.
- the hole the socket is arranged eccentrically.
- she takes a bearing pin 24, which is in one piece with a profile roller 26 is shaped.
- the bushing 20 is drilled via needle bearings 28 and 30 at the front and rear end.
- An axial needle bearing 32 is between the associated side of the roller 28 and the Plate 10 and the socket 20 arranged.
- Roller 26 and bearing pin 24 have an axial 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 sits, the inside and outside of a spherical cap is.
- the outer end of the locking member 42 engages in a complementarily shaped annular groove 42a.
- a plug 44 screwed in the left end of the bore 34.
- a spring 46 is arranged between plug 44 and the associated end of the locking pin 36.
- the locking element 42 in FIG constant engagement with the groove 42a so that the Profile roller 26 is axially secured. Should the profile role are removed, the pin 36 is pressed in the direction of arrow F, so that the locking element radially inwards can be moved and the bearing pin 24 pulled out.
- a journal 48 molded on which a gear 50 is arranged.
- the Gear 50 meshes with a central gear 52 which is on a Stub shaft 54 of a coupling part 56 is seated with a coupling part 58 cooperates.
- the coupling parts 56, 58 form a claw coupling.
- the coupling part 58 is connected to a shaft 60 with which the one in the figure shown thread rolling head clamped in a machine tool can be.
- Coil spring 62 Between the flange 16 and the stub shaft 54 is one Coil spring 62 arranged. If the coil spring is tensioned, she tries to turn the gear 52, causing the Bush 20 is rotated and thereby the distance between the profile rollers 26 changes.
- 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)
- Vehicle Body Suspensions (AREA)
- Heat Treatment Of Steel (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Pinball Game Machines (AREA)
Description
Die Erfindung bezieht sich auf einen Gewinderollkopf nach dem Oberbegriff des Anspruchs 1 (siehe z.B. CH-A-582 028).The invention relates to a thread rolling head the preamble of claim 1 (see e.g. CH-A-582 028).
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 thread using so-called thread rolling heads to manufacture. A basic distinction is made three types of thread rolling heads, namely axial rolling heads, Radial roller head and tangential roller head. In the former case which became known for example through G 93 13 282, the axial roller head has profile rollers with pitch-free Profile rings on. The profile rolls can be horizontal Axis are pivoted so that the workpiece or the rolling head with a complete rotation around the Thread pitch moves axially. It can be any Make long threads. The profile rollers are on bolts rotatably mounted, which in turn is eccentric are. A gear sits on the bolt and works with you centric gear together to form the profile rollers their distance from each other. To this In this way, the feed can be carried out before the actual operation accomplish. In addition, the degree of Adjustment or by the position of the bolt the distance change between the profile rolls. So different Thread diameters are 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. With the radial roller heads, such as those from DE 42 36 085 have become known, the profile rollers have a Flattening on that in the starting position of the feed axis the workpiece is turned. During the editing process the profile rollers with the help of a spring or the like rotated through a certain angle until Friction with the workpiece is made. Another spin of the rolling head or the workpiece leads to the fact that continue turning the profile rollers and thereby forming the thread. The thread is within a single roll revolution generated. Point at the end of the molding process the flattened sides of the profile rollers back to the workpiece to so that it can be removed.
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 Bund hergestellt werden.The tangential thread rolling head has two thread rolls, which are driven sideways against the workpiece and during the advancing feed movement mainly in form the thread in the direction tangential to the workpiece. The forming process is essentially complete when the The axes of the workpiece and roller are vertically one above the other. The same advantages come with tangential rolling as with radial rolling, i.e. relatively short processing time and producing threads with a short thread runout. You can also thread behind a collar getting produced.
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 Rollkopf 5 hergestellt werden kann, begrenzt ist.In the conventional thread rolling heads, the bearing bolts are for the profile rollers in two spaced apart Bearing plates rotatably mounted. The front bearing plate or front plate, however, is involved in several thread forming processes a hindrance because they bring the profile rolls up to a collar or the like at least by the thickness of the Front panel limited. Another disadvantage is that due to the storage of the profile rolls of the work area, i.e. the Area of thread diameter using the rolling head 5 can be produced 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.EP 0 417 416 also discloses an axial thread rolling head without a front plate known. The one-sided storage of the Profile rollers meanwhile requires that the bearing pin in its Thickness must not be less than a minimum. Thereby is also for threaded roller heads without front plates the working area is limited according to the state of the 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 a thread rolling head to create, in which the profile roles an extended Have work area and still stable are stored. In addition, the rolling head according to the invention for the production of short threads and profiles for screw fittings or similar workpieces, where unfavorable space conditions make it difficult to roll.
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 molded in one piece with a bearing pin, which in turn for one-sided storage in a hole in the bearing unit is rotatably mounted.
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 profile roller and bolt has several advantages in the wake. For one thing, it shows one larger work area, for example between 12 and 40 mm outer diameter. Due to the favorable storage conditions between the bearing pin and the bore higher stability compared to known front panelless Profile rolls reached.
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 screwed be fixed axially. However, one is preferable Quick-change system, as has become known in many versions is. According to the invention, one can consist in that profile roller and bearing pin an axial bore have, in which a locking pin is arranged with a conical locking surface, which in turn acts on a locking element that is radially displaceable sits in a radial bore of the bearing pin and the Bearing bore has an annular groove in which the locking element rotates when the profile roll rotates. The Locking bolt is preferably acted upon by a spring, whereby the conical locking surface that Locking element constantly engages with the groove. If the locking pin is adjusted axially, the locking element can dodge radially inwards so that the Interlock between the bearing pin and the hole is released becomes. This allows the profile roller with the bearing pin removed the hole and replaced it with another one become.
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 Profilrollen 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 for axial and radial thread rolling heads suitable. There is an adjustment in both the profile rollers are provided in the radial direction. In which Axial thread rolling head becomes an adjustment of the profile rollers made radially outward when a workpiece is between the roles to be introduced. With the radial thread rolling head the profile rollers are shifted for setting the center distance. With known axial thread rolling heads this is done in that the bearing pin for the profile roll eccentric and in one Hole is added. If the bearing pin is turned, for example with the help of a suitable gear also a radial adjustment of the profile roller.
Gemäß 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.According to the invention, the bearing pin rotatably mounted in a bushing that is eccentric is. Will the jack in a conventional manner to their If the axis is twisted, the axis of the bearing pin will shift the profile role. While with the known Axial thread rolling head of the bearing pin directly a gear carries, which rotates via a central gear can be, according to an embodiment of the invention the socket with a pin on which the Gear is arranged. The actuation of an axial thread rolling head differs in execution according to the invention does not differ from a known axial thread rolling head. The same applies to the radial thread rolling head to who is trained with the profile rollers according to the invention is.
Die Erfindung wird nachfolgend anhand einer Zeichnung näher erläutert.The invention will now be described with reference to a drawing explained.
Die einzige Figur zeigt im Schnitt einen Axialgewinderollkopf nach der Erfindung.The only figure shows an axial thread rolling head in section according to the invention.
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.Between the
Claims (5)
- A thread rolling head with at least two profile rollers (26) comprising a forming thread, which are rotatably mounted in a bearing unit (10), and with feed motion means which brings the profile rollers (26) in and out of engagement with a cylindrical work piece, wherein the profile rollers (26) are formed as one piece with a mounting bolt (24) which for the one-sided mounting of the profile rollers (26) is rotatably mounted in the bore of the bearing unit (10), characterised in that the mounting bolt (24) is mounted in an eccentric bore of a cylindrical sleeve (20) which for its part is rotatably mounted in the bore of the bearing unit and the sleeve (20) is rotatable via a gear (50, 52).
- A thread rolling head according to claim 1, characterised in that the mounting bolt (24) is axially fastened by screw fastening.
- A thread rolling head according to claim 1, characterised in that the mounting bolt (24) is axially fastened by a quick-change system.
- A thread rolling head according to claim 3, characterised in that the profile roller (26) and the mounting bolt (24) comprise an axial through-bore (34) in which a locking pin (36) is arranged with a conical locking surface (38) which for its part acts on a locking element (42) which is seated radially displaceable in a radial bore (40) of the mounting bolt (24) and the bearing bore comprises an annular groove (42a) in which the locking element (42) revolves when the profile roller (26) rotates.
- A thread rolling head according to one of the claims 1 to 4, characterised in that on a drive peg (48) connected to the sleeve (20) there is seated a gearwheel (50) which meshes with a gearwheel (52) which is seated coaxially on a coupling part (56) wherein the other coupling part is connected to a tensioning shank (60) or likewise.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29606684U DE29606684U1 (en) | 1996-04-12 | 1996-04-12 | Thread rolling head |
| DE29606684U | 1996-04-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0800877A1 EP0800877A1 (en) | 1997-10-15 |
| EP0800877B1 true 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 | Wilhelm Fette Gmbh, 21493 Schwarzenbek | Thread rolling head |
| DE202004000424U1 (en) * | 2004-01-14 | 2004-04-01 | Fette Gmbh | axial thread |
| WO2014056419A1 (en) | 2012-10-08 | 2014-04-17 | 上海泛华紧固系统有限公司 | Rolling head for rolling pipe threads, apparatus and pipe column blank machined by the apparatus |
| 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 |
| AU2017376521A1 (en) | 2016-12-13 | 2019-07-18 | Shanghai Pan-China Fastening Systems Co., Ltd. | Rolled pipe thread processing method, rolling head, apparatus, module, production line, and product thereof |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US541551A (en) * | 1895-06-25 | Mechanism for rolling threads on bars or rods | ||
| 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 |
| CH595173A5 (en) * | 1975-12-23 | 1978-01-31 | Harold Habegger | |
| 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 |
| DE8910769U1 (en) * | 1989-09-09 | 1989-11-02 | Wilhelm Fette Gmbh, 2053 Schwarzenbek | Axial thread rolling head |
| US4924687A (en) * | 1989-10-16 | 1990-05-15 | C. J. Winter Machine Works, Inc. | Quick release thread roll support |
| 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 | Wilhelm Fette Gmbh, 21493 Schwarzenbek | Axial thread rolling head |
-
1996
- 1996-04-12 DE DE29606684U patent/DE29606684U1/en not_active Expired - Lifetime
-
1997
- 1997-04-02 ES ES97105483T patent/ES2149525T3/en not_active Expired - Lifetime
- 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
- 1997-04-09 US US08/833,760 patent/US5870918A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| ES2149525T3 (en) | 2000-11-01 |
| EP0800877A1 (en) | 1997-10-15 |
| DE59702096D1 (en) | 2000-09-07 |
| US5870918A (en) | 1999-02-16 |
| DE29606684U1 (en) | 1996-07-11 |
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