EP0310898B1 - Apparatus for rolling threads or similar profiles - Google Patents

Apparatus for rolling threads or similar profiles Download PDF

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Publication number
EP0310898B1
EP0310898B1 EP88115751A EP88115751A EP0310898B1 EP 0310898 B1 EP0310898 B1 EP 0310898B1 EP 88115751 A EP88115751 A EP 88115751A EP 88115751 A EP88115751 A EP 88115751A EP 0310898 B1 EP0310898 B1 EP 0310898B1
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EP
European Patent Office
Prior art keywords
rolling
lever
rolling tools
guide
drive
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
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EP88115751A
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German (de)
French (fr)
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EP0310898A1 (en
Inventor
Jürgen Abele
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Rollwalztechnik Abele and Holtich GmbH
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Rollwalztechnik Abele and Holtich GmbH
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Priority to AT88115751T priority Critical patent/ATE69748T1/en
Publication of EP0310898A1 publication Critical patent/EP0310898A1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
    • B21B31/28—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal by toggle-lever mechanisms

Definitions

  • the invention relates to a device for rolling threads or the like. Profiles by means of two rolling tools rotating in the same direction, the distance between which can be changed, the rolling tools being arranged on corresponding displaceable guide carriages for synchronously changing their distance from one another.
  • Thread rolling machines with a stationary rolling tool and a second rolling tool mounted in a slide are known. This slide is then moved hydraulically or mechanically in the direction of the stationary roller, thus rolling the profile into the workpiece. However, the workpiece is laterally displaced, so that a uniform penetration of both tools into the workpiece is not ensured.
  • a device for rolling threads is also known, in which the rolling tools are arranged directly on two levers fixed in mirror image. Each lever has a pivot point which is also arranged in mirror image, so that the rolling tools also run on a circle with a corresponding radius around this pivot point when the levers are spread at the far end. A linear movement of the rolling tools is not possible, so that workpieces cannot be machined diagonally opposite one another.
  • a thread rolling machine is also known according to the preamble of claim 1, in which the rolling tools are moved towards or away from each other via two scissor levers with a common pivot point and an expanding wedge.
  • This arrangement has the disadvantage that the rolling tools perform a certain pendulum movement, so that their exact adjustment to one another cannot be maintained by the pendulum movement.
  • the inventor has set itself the goal of developing a device of the type mentioned above, by means of which the distance between two rolling tools can be adjusted completely synchronously with exact linear guidance, without the need for a later new adjustment or alignment of the rolling tools.
  • both rolling tools or their guide carriages are each connected to a lever arm and a cross member with a wing of a central lever, which can be rotated about an axis by a drive, the lever arm between a linkage to the cross member and a connection with the guide carriage has a pivot point fixed to the housing and the connection to the guide carriage is effected in that the lever arm holds a displaceable pressure plate delimited by the recess in a recess in the guide carriage via a bolt.
  • This invention ensures on the one hand that the rolling tools are guided in exactly the same axial plane, i.e. both guides or corresponding guide slides run on the same axis. How these guides or guide slides are designed is irrelevant within the scope of the invention.
  • a conceivable solution is that the slides are guided in corresponding guide troughs which are molded into the machine housing.
  • rails can also be provided in the machine housing on which the guide slides run.
  • the lever arm has a pivot point fixed to the housing between the linkage to the crossmember and its connection to the guide carriage, about which it rotates. If the crossbar presses on its articulation with the lever arm, it rotates around the pivot point and thereby moves the guide carriage along its guide.
  • the lever arm is also articulated to the guide carriage, this articulated connection must allow a certain circular movement of the lever arm. For this purpose there are corresponding limiting or pressure plates in the guide carriage.
  • the crossbar according to the invention consists of two strips which strike the central lever on both sides of a wing. They are then articulated to the wing via a central bolt. The lever arrangement is thus stabilized.
  • the wings are molded onto a sleeve, which in turn rotates in corresponding bearings fixed to the housing.
  • a rotary bolt or the like can also be used here instead of a sleeve.
  • this sleeve has the advantage that a stub shaft of a gear can engage in its axial bore, which in turn is actuated by a corresponding drive.
  • This drive can be, for example, a double-acting linear cylinder or sealing piston cylinder.
  • the central lever is the starting point of every movement of the rolling tools, so that, for example, irregularities in the drive are transmitted completely evenly to the rolling tools and their guides. Absolute synchronism is guaranteed.
  • a device R for rolling threads or the like. Profiles has a machine housing 1 in which the essential mechanical elements are separated from corresponding switching or control elements by a base plate 2. In the position of use, a cover plate 3 also covers these mechanical elements, so that the machine housing 1 is essentially closed.
  • peripheral tools 4 and 5 are provided with corresponding thread profiles, not shown.
  • the rolling tools 4 and 5 are arranged on shafts 6, which rotate about corresponding axes 7 and 8, respectively.
  • the shafts 6 rest in a bearing block 9, which is fixed to a guide carriage 10.
  • This guide carriage 10 forms a projection 11 which is penetrated by the shaft 6 and in which there are further bearing shells, not shown, for this shaft 6.
  • Corresponding connecting flanges 12 are provided on this projection 11 for an articulated shaft 13, which connects the shaft 6 to a gear part 14.
  • a separate gear part 15 is also provided for the other shaft 6 of the rolling tool 4, both gear parts 14 and 15 being connected to one another via a coupling 16.
  • the corresponding geared motor 17 is then flanged onto the gear part 15.
  • Both guide carriages 10 are guided in a guide groove 18 in the base plate 2 and in a guide channel 19 in the cover plate 3 (see FIG. 2).
  • the guide carriages 10 are adjustable in the direction x, the distance a between the two rolling tools 4 and 5 being adjustable.
  • This adjustment of the distance a between the two rolling tools 4 and 5 or the displacement of the guide carriage 10 in the direction x takes place via a lever arrangement 20.
  • the core of this lever arrangement is a central lever 21 which, as shown in particular in FIG. 3, about an axis A. turns.
  • This central lever 21 consists essentially of a sleeve 22 with an axial bore 23.
  • wings 24 are formed on both sides.
  • the sleeve 22 engages in a trough 25 in the base plate 2 and rotates there, supported by corresponding bearings 26, about a bearing pin 27.
  • the sleeve 22 partially penetrates the cover plate 3 and is supported against the edge 28 of a corresponding opening in the cover plate 3 via a further bearing 29.
  • a shaft stub 30 engages in the axial bore 23 from above, which can be rotated about the axis A by a drive 32 via a corresponding gear 31.
  • This drive 32 can be, for example, a double-acting linear cylinder.
  • the vanes 24 are penetrated by central bolts 33, which rotate in corresponding slide bearings 34. With these central bolts 33, two strips 35 and 36 of a cross member 37, which strike the wings 24 from the outside, are connected.
  • this cross member 37 has an articulated connection via a pivot pin 38 to a lever arm 39 which has a pivot point 40 fixed to the housing.
  • the lever arm 39 engages in the guide carriage 10 or a corresponding recess 41 in the guide carriage 10 and is articulated there to the guide carriage 10 via a bolt 42.
  • the narrower region of the recess 41 around the bolt 42 is formed on the one hand by a limiting plate 43 and on the other hand by a pressure plate 44.
  • a further pressure plate 45 can also be assigned to the lever arm 39 in order to absorb the pressure.
  • the operation of the present invention is as follows: In a starting position, the two rolling tools 4 and 5 are set in rotation about their axes 7 and 8 via the geared motor 17, the gear parts 14 and 15, the cardan shafts 13 and the shafts 6. This rotation runs in the opposite direction. A workpiece, for example a rod section, is then introduced into the distance a between the two rolling tools 4 and 5, and the corresponding thread profile is given via the corresponding peripheral profile of the rolling tools 4 and 5.
  • the central lever 21 is set in motion via the drive 32 and the gear 31, wherein it rotates about its axis A.
  • the present arrangement according to the invention is not only limited to the horizontal arrangement of the two rolling tools with respect to one another, but it can also function in the case of a vertical or oblique arrangement. There is no difference in the very positive effect.

Abstract

In an apparatus for rolling threads or similar profiles by means of two rolling tools (4,5) which rotate in the same direction and the spacing (a) of which relative to one another can be altered, the rolling tools (4,5) are arranged on corresponding displaceable guides (10) for the purpose of altering their spacing (a) relative to one another. Both rolling tools (4,5) or their guides (10) are connected via a lever arrangement (20) to a central lever (21) which can be rotated about an axis (A) by a drive (32). <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Walzen von Gewinden od. dgl. Profilen mittels zweier gleichsinnig drehender Walzwerkzeuge, deren Abstand zueinander veränderbar ist, wobei die Walzwerkzeuge an entsprechenden verschiebbaren Führungsschlitten zur synchronen Veränderung ihres Abstandes zueinander angeordnet sind.The invention relates to a device for rolling threads or the like. Profiles by means of two rolling tools rotating in the same direction, the distance between which can be changed, the rolling tools being arranged on corresponding displaceable guide carriages for synchronously changing their distance from one another.

Bei Gewindewalzmaschinen der vorliegenden Art besteht die Notwendigkeit, daß beispielsweise die als Rillenrollen ausgebildeten Walzwerkzeuge bezüglich ihres Abstandes zueinander veränderbar angeordnet sein müssen. Zum einen resultiert diese Notwendigkeit aus der Forderung, daß beide Walzwerkzeuge gleichförmig in das zu bearbeitende Werkstück eindringen müssen, zum anderen ist es notwendig, daß auch bei einer Veränderung des Abstandes infolge der Bearbeitung einer anderen Werkstückserie die Rillen in einem bestimmten Verhältnis zueinander angeordnet sind.In the case of thread rolling machines of the present type, there is a need that, for example, the rolling tools designed as grooved rollers must be arranged such that their spacing from one another can be changed. On the one hand, this necessity results from the requirement that both rolling tools have to penetrate the workpiece to be machined uniformly, on the other hand, it is necessary that the grooves are arranged in a certain relationship to one another even when the distance is changed as a result of machining another series of workpieces.

Bekannt sind Gewindewalzmaschinen mit einem ortsfesten Walzwerkzeug und einem zweiten, in einem Schlitten gelagerten Walzwerkzeug. Dieser Schlitten wird dann hydraulisch oder mechanisch in Richtung auf die ortsfeste Walze bewegt und so das Profil in das Werkstück eingewalzt. Dabei erfährt jedoch das Werkstück eine seitliche Verschiebung, wodurch ein gleichförmiges Eindringen beider Werkzeuge in das Werkstück nicht gesichert ist.Thread rolling machines with a stationary rolling tool and a second rolling tool mounted in a slide are known. This slide is then moved hydraulically or mechanically in the direction of the stationary roller, thus rolling the profile into the workpiece. However, the workpiece is laterally displaced, so that a uniform penetration of both tools into the workpiece is not ensured.

Aus der DE-A- 35 08 259 ist beispielsweise auch eine Gewindewalzmaschine bekannt, bei der jedem Walzwerkzeug ein eigener Verstellantrieb zugeordnet ist. Obwohl hier einiger Aufwand für die Synchronisation der Bewegung beider Walzwerkzeuge betrieben wird, muß dennoch in der Praxis davon ausgegangen werden, daß zwei getrennte Antriebe für jeweils ein Walzwerkzeug die Gefahr in sich bergen, daß die Walzwerkzeuge nicht gleichförmig in das Werkstück eindringen.From DE-A-35 08 259 a thread rolling machine is also known, for example, in which each rolling tool is assigned its own adjustment drive. Although some effort is made to synchronize the movement of the two rolling tools here, it must nevertheless be assumed in practice that two separate drives for one rolling tool each involve the risk that the rolling tools will not penetrate the workpiece uniformly.

Aus der FR-A 889 055 ist ferner eine Vorrichtung zum Walzen von Gewinden bekannt, bei der die Walzwerkzeuge direkt an zwei spiegelbildlich festgelegten Hebeln angeordnet sind. Jeder Hebel besitzt einen ebenfalls spiegelbildlich angeordneten Drehpunkt, so daß auch die Walzwerkzeuge bei einem Spreizen der Hebel am jenseitigen Ende auf einem Kreis mit einem entsprechenden Radius um diesen Drehpunkt laufen. Eine lineare Bewegung der Walzwerkzeuge ist nicht möglich, so daß auch keine Bearbeitung von Werkstücken diagonal gegenüber erfolgen kann.From FR-A 889 055 a device for rolling threads is also known, in which the rolling tools are arranged directly on two levers fixed in mirror image. Each lever has a pivot point which is also arranged in mirror image, so that the rolling tools also run on a circle with a corresponding radius around this pivot point when the levers are spread at the far end. A linear movement of the rolling tools is not possible, so that workpieces cannot be machined diagonally opposite one another.

Aus der DE-A- 25 23 837 ist ferner eine Gewindewalzmaschine nach dem Oberbegriff des Anspruchs 1 bekannt, bei der über zwei Scherenhebel mit einem gemeinsamen Drehpunkt und einem Spreizkeil die Walzwerkzeuge zueinander bzw. voneinander weg bewegt werden. Diese Anordnung hat den Nachteil, daß die Walzwerkzeuge eine gewisse Pendelbewegung durchführen, so daß ihre genaue Justierung zueinander durch die Pendelbewegung nicht beibehalten werden kann.From DE-A-25 23 837 a thread rolling machine is also known according to the preamble of claim 1, in which the rolling tools are moved towards or away from each other via two scissor levers with a common pivot point and an expanding wedge. This arrangement has the disadvantage that the rolling tools perform a certain pendulum movement, so that their exact adjustment to one another cannot be maintained by the pendulum movement.

Der Erfinder hat sich zum Ziel gesetzt, eine Vorrichtung der oben genannten Art zu entwickeln, mittels welcher der Abstand zwischen zwei Walzwerkzeugen vollkommen synchron bei exakter linearer Führung verstellt werden kann, ohne daß eine spätere neue Justierung oder Ausrichtung der Walzwerkzeuge notwendig wird.The inventor has set itself the goal of developing a device of the type mentioned above, by means of which the distance between two rolling tools can be adjusted completely synchronously with exact linear guidance, without the need for a later new adjustment or alignment of the rolling tools.

Zur Lösung dieser Aufgabe führt, daß beide Walzwerkzeuge bzw. deren Führungsschlitten jeweils einen Hebelarm und eine Traverse mit jeweils einem Flügel eines Zentralhebels verbunden sind, welcher von einem Antrieb um eine Achse drehbar ist, wobei der Hebelarm zwischen einer Anlenkung an die Traverse und einer Verbindung mit dem Führungsschlitten einen gehäusefesten Drehpunkt aufweist und die Verbindung mit dem Führungsschlitten dadurch erfolgt, daß der Hebelarm in einer Aussparung in dem Führungsschlitten eine von der Aussparung begrenzte verschiebbare Druckplatte über einen Bolzen hält.To achieve this object, both rolling tools or their guide carriages are each connected to a lever arm and a cross member with a wing of a central lever, which can be rotated about an axis by a drive, the lever arm between a linkage to the cross member and a connection with the guide carriage has a pivot point fixed to the housing and the connection to the guide carriage is effected in that the lever arm holds a displaceable pressure plate delimited by the recess in a recess in the guide carriage via a bolt.

Mit dieser Erfindung ist zum einen gewährleistet, daß die Walzwerkzeuge in genau gleicher axialer Ebene geführt werden, d.h. beide Führungen bzw. entsprechende Führungsschlitten laufen auf der gleichen Achse. Wie diese Führungen bzw. Führungsschlitten ausgebildet sind, ist im Rahmen der Erfindung unerheblich. Eine denkbare Lösung besteht darin, daß die Schlitten in entsprechenden Führungsrinnen, welche dem Maschinengehäuse eingeformt sind, geführt werden. Es können aber genauso gut auch Schienen im Maschinengehäuse vorgesehen sein, auf welchen die Führungsschlitten laufen.This invention ensures on the one hand that the rolling tools are guided in exactly the same axial plane, i.e. both guides or corresponding guide slides run on the same axis. How these guides or guide slides are designed is irrelevant within the scope of the invention. A conceivable solution is that the slides are guided in corresponding guide troughs which are molded into the machine housing. However, rails can also be provided in the machine housing on which the guide slides run.

Durch die gemeinsame Ankopplung der jeweiligen Hebelanordnung jedes Walzwerkzeuges an einen Zentralhebel wird jedoch ferner gewährleistet, daß bei einer Bewegung dieses Zentralhebels diese Bewegung in gleichem Maße auf jede der beiden Hebelanordnungen übertragen wird. Damit ist eine absolut synchrone Bewegung der beiden Führungsschlitten bzw. Walzwerkzeuge gewährleistet, so daß ein nachträgliches Justieren oder ein Fehllaufen der Walzwerkzeuge entfällt.The common coupling of the respective lever arrangement of each rolling tool to a central lever also ensures, however, that when this central lever moves, this movement is transmitted to the same extent to each of the two lever arrangements. This ensures an absolutely synchronous movement of the two guide carriages or rolling tools, so that there is no need for subsequent adjustment or incorrect running of the rolling tools.

Der Hebelarm hat zwischen der Anlenkung an die Traverse und seiner Verbindung mit dem Führungsschlitten einen gehäusefesten Drehpunkt, um welchen er dreht. Drückt die Traverse auf ihre Anlenkung mit dem Hebelarm, so dreht sich dieser um den Drehpunkt und verschiebt dabei den Führungsschlitten entlang von dessen Führung. Dabei ist der Hebelarm mit dem Führungsschlitten ebenfalls gelenkig verbunden, wobei diese gelenkige Verbindung eine bestimmte Kreisbewegung des Hebelarms zulassen muß. Hierzu gibt es dann in dem Führungsschlitten entsprechende Begrenzungs- bzw. Druckplatten.The lever arm has a pivot point fixed to the housing between the linkage to the crossmember and its connection to the guide carriage, about which it rotates. If the crossbar presses on its articulation with the lever arm, it rotates around the pivot point and thereby moves the guide carriage along its guide. The lever arm is also articulated to the guide carriage, this articulated connection must allow a certain circular movement of the lever arm. For this purpose there are corresponding limiting or pressure plates in the guide carriage.

Um auch mögliche Verkantungen der Traverse bei ihrer Verbindung mit dem Zentralhebel bzw. dem Hebelarm aufzufangen, besteht diese erfindungsgemäß aus zwei Streifen, welche beidseits eines Flügels an dem Zentralhebel anschlagen. Mit dem Flügel sind sie dann über einen Zentralbolzen gelenkig verbunden. Damit ist die Hebelanordnung stabilisiert.In order to also compensate for possible canting of the crossbar when it is connected to the central lever or the lever arm, the crossbar according to the invention consists of two strips which strike the central lever on both sides of a wing. They are then articulated to the wing via a central bolt. The lever arrangement is thus stabilized.

Die Flügel sind im übrigen vorliegend einer Hülse angeformt, welche wiederum in entsprechenden gehäusefesten Lagern dreht. Selbstverständlich kann hier anstelle einer Hülse auch ein Drehbolzen od. dgl. benutzt werden, Diese Hülse hat allerdings den Vorteil, daß in ihrer Axialbohrung ein Wellenstummel eines Getriebes eingreifen kann, welches wiederum von einem entsprechenden Antrieb betätigt wird. Dieser Antrieb kann beispielswiese ein doppelt wirkender Linearzylinder oder Dichtkolbenzylinder sein.In the present case, the wings are molded onto a sleeve, which in turn rotates in corresponding bearings fixed to the housing. Of course, a rotary bolt or the like can also be used here instead of a sleeve. However, this sleeve has the advantage that a stub shaft of a gear can engage in its axial bore, which in turn is actuated by a corresponding drive. This drive can be, for example, a double-acting linear cylinder or sealing piston cylinder.

Somit ist demnach der Zentralhebel der Ausgangspunkt jeder Bewegung der Walzwerkzeuge, so daß beispielsweise Unregelmäßigkeiten im Antrieb völlig gleichmäßig auf die Walzwerkzeuge und deren Führungen übertragen werden. Ein absolutes Synchronlaufen ist gewährleistet.Thus, the central lever is the starting point of every movement of the rolling tools, so that, for example, irregularities in the drive are transmitted completely evenly to the rolling tools and their guides. Absolute synchronism is guaranteed.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt in

Fig. 1
eine teilweise gebrochene Draufsicht auf eine erfindungsgemäße Vorrichtung zum Walzen von Gewinden;
Fig. 2
eine teilweise gebrochen dargestellte Frontansicht der Vorrichtung gemäß Fig. 1;
Fig. 3
einen Querschnitt durch einen Teil eines Hebelsystems der Vorrichtung gemäß Fig. 1.
Further advantages, features and details of the invention result from the following description of preferred exemplary embodiments and from the drawing; this shows in
Fig. 1
a partially broken plan view of an inventive device for rolling threads;
Fig. 2
a partially broken front view of the device of FIG. 1;
Fig. 3
2 shows a cross section through part of a lever system of the device according to FIG. 1.

Eine Vorrichtung R zum Walzen von Gewinden od. dgl. Profilen weist gemäß Fig. 1 ein Maschinengehäuse 1 auf, in welchem die wesentlichen mechanischen Elemente von entsprechenden Schalt- bzw. Steuerelementen durch eine Grundplatte 2 getrennt sind. In Gebrauchslage überdeckt eine Deckplatte 3 auch diese mechanischen Elemente, so daß das Maschinengehäuse 1 im wesentlichen geschlossen ist.According to FIG. 1, a device R for rolling threads or the like. Profiles has a machine housing 1 in which the essential mechanical elements are separated from corresponding switching or control elements by a base plate 2. In the position of use, a cover plate 3 also covers these mechanical elements, so that the machine housing 1 is essentially closed.

Frontwärtig sind zwei als Rollen ausgebildete Walzwerkzeuge 4 und 5 erkennbar, wobei diese in Gebrauchslage gleichsinnig drehen. Umfangsseitig sind die Walzwerkzeuge 4 und 5 mit entsprechenden nicht gezeigten Gewindeprofilierungen versehen.At the front, two rolling tools 4 and 5 designed as rollers can be seen, these rotating in the same direction in the position of use. The peripheral tools 4 and 5 are provided with corresponding thread profiles, not shown.

Die Walzwerkzeuge 4 und 5 sind an Wellen 6 angeordnet, welche um entsprechende Achsen 7 bzw. 8 drehen. Einerseits ruhen die Wellen 6 in jeweils einem Lagerbock 9, welcher an einem Führungsschlitten 10 festgelegt ist. Dieser Führungsschlitten 10 bildet eine Auskragung 11, welche von der Welle 6 durchsetzt ist und in welcher sich weitere, nicht dargestellte Lagerschalen für diese Welle 6 befinden. An dieser Auskragung 11 sind entsprechende Anschlußflansche 12 für eine Gelenkwelle 13 vorgesehen, welche die Welle 6 mit einem Getriebeteil 14 verbindet. Auch für die andere Welle 6 des Walzwerkzeugs 4 ist ein eigener Getriebeteil 15 vorgesehen, wobei beide Getriebeteile 14 und 15 über eine Kupplung 16 miteinander verbunden sind. An das Getriebeteil 15 ist dann wieder der entsprechende Getriebemotor 17 angeflanscht.The rolling tools 4 and 5 are arranged on shafts 6, which rotate about corresponding axes 7 and 8, respectively. On the one hand, the shafts 6 rest in a bearing block 9, which is fixed to a guide carriage 10. This guide carriage 10 forms a projection 11 which is penetrated by the shaft 6 and in which there are further bearing shells, not shown, for this shaft 6. Corresponding connecting flanges 12 are provided on this projection 11 for an articulated shaft 13, which connects the shaft 6 to a gear part 14. A separate gear part 15 is also provided for the other shaft 6 of the rolling tool 4, both gear parts 14 and 15 being connected to one another via a coupling 16. The corresponding geared motor 17 is then flanged onto the gear part 15.

Da auch die Welle 6 des Walzwerkzeugs 4 einen entsprechenden Führungsschlitten 10 durchsetzt, ist klargestellt, daß die Lagerung beider Walzwerkzeuge 4 und 5 etwa spiegelbildlich identisch ausgebildet ist. Selbstverständlich ist auch die Welle 6 des Walzwerkzeuges 4 über eine entsprechende, der Übersichtlichkeit halber nicht gezeigte Gelenkwelle mit ihrem Getriebeteil 15 verbunden.Since the shaft 6 of the rolling tool 4 also passes through a corresponding guide slide 10, it is made clear that the mounting of both rolling tools 4 and 5 is approximately identical in mirror image. Of course, the shaft 6 of the rolling tool 4 is also connected to its gear part 15 via a corresponding drive shaft (not shown for the sake of clarity).

Beide Führungsschlitten 10 sind zum einen in einer Führungsrinne 18 in der Grundplatte 2 und zum anderen in einem Führungskanal 19 in der Deckplatte 3 geführt (siehe Fig. 2). Dabei sind die Führungsschlitten 10 in Richtung x verstellbar, wobei der Abstand a zwischen beiden Walzwerkzeugen 4 und 5 verstellt werden kann.Both guide carriages 10 are guided in a guide groove 18 in the base plate 2 and in a guide channel 19 in the cover plate 3 (see FIG. 2). The guide carriages 10 are adjustable in the direction x, the distance a between the two rolling tools 4 and 5 being adjustable.

Dieses Verstellen des Abstandes a zwischen den beiden Walzwerkzeugen 4 und 5 bzw. das Verschieben der Führungsschlitten 10 in Richtung x geschieht über eine Hebelanordnung 20. Kernstück dieser Hebelanordnung ist ein Zentralhebel 21, welcher, wie insbesondere in Fig. 3 dargestellt, um eine Achse A dreht. Dieser Zentralhebel 21 besteht im wesentlichen aus einer Hülse 22 mit einer Axialbohrung 23. An diese Hülse 22 sind beidseits Flügel 24 angeformt.This adjustment of the distance a between the two rolling tools 4 and 5 or the displacement of the guide carriage 10 in the direction x takes place via a lever arrangement 20. The core of this lever arrangement is a central lever 21 which, as shown in particular in FIG. 3, about an axis A. turns. This central lever 21 consists essentially of a sleeve 22 with an axial bore 23. On this sleeve 22 wings 24 are formed on both sides.

Die Hülse 22 greift in eine Mulde 25 in der Grundplatte 2 ein und dreht dort, abgestützt über entsprechende Lager 26 um einen Lagerbolzen 27.The sleeve 22 engages in a trough 25 in the base plate 2 and rotates there, supported by corresponding bearings 26, about a bearing pin 27.

Andererseits durchsetzt die Hülse 22 teilweise die Deckplatte 3 und stützt sich gegen den Rand 28 einer entsprechenden Öffnung in der Deckplatte 3 über ein weiteres Lager 29 ab.On the other hand, the sleeve 22 partially penetrates the cover plate 3 and is supported against the edge 28 of a corresponding opening in the cover plate 3 via a further bearing 29.

In die Axialbohrung 23 greift von oben her ein Wellenstummel 30 ein, welcher über ein entsprechendes Getriebe 31 von einem Antrieb 32 um die Achse A gedreht werden kann. Bei diesem Antrieb 32 kann es sich beispielsweise um einen doppelt wirkenden Linearzylinder handeln.A shaft stub 30 engages in the axial bore 23 from above, which can be rotated about the axis A by a drive 32 via a corresponding gear 31. This drive 32 can be, for example, a double-acting linear cylinder.

Parallel zur Achse A sind die Flügel 24 von Zentralbolzen 33 durchsetzt, welche in entsprechenden Gleitlagern 34 drehen. Mit diesen Zentralbolzen 33 sind jeweils zwei von außen her an die Flügel 24 anschlagende Streifen 35 und 36 einer Traverse 37 verbunden.Parallel to the axis A, the vanes 24 are penetrated by central bolts 33, which rotate in corresponding slide bearings 34. With these central bolts 33, two strips 35 and 36 of a cross member 37, which strike the wings 24 from the outside, are connected.

Andernends weist diese Traverse 37 eine gelenkige Verbindung über einen Drehbolzen 38 mit einem Hebelarm 39 auf, welcher einen gehäusefesten Drehpunkt 40 besitzt. Jenseits dieses gehäusefesten Drehpunktes 40 greift der Hebelarm 39 in den Führungsschlitten 10 bzw. eine entsprechende Aussparung 41 im Führungsschlitten 10 ein und ist dort über einen Bolzen 42 mit dem Führungsschlitten 10 gelenkig verbunden.At the other end, this cross member 37 has an articulated connection via a pivot pin 38 to a lever arm 39 which has a pivot point 40 fixed to the housing. Beyond this pivot point 40 fixed to the housing, the lever arm 39 engages in the guide carriage 10 or a corresponding recess 41 in the guide carriage 10 and is articulated there to the guide carriage 10 via a bolt 42.

Der engere Bereich der Aussparung 41 um den Bolzen 42 herum wird einerseits von einer Begrenzungsplatte 43 und andererseits von einer Druckplatte 44 gebildet. Wie insbesondere in Fig. 2 ersichtlich, kann zur Druckaufnahme auch dem Hebelarm 39 noch zusätzlich eine weitere Druckplatte 45 zugeordnet sein.The narrower region of the recess 41 around the bolt 42 is formed on the one hand by a limiting plate 43 and on the other hand by a pressure plate 44. As can be seen in particular in FIG. 2, a further pressure plate 45 can also be assigned to the lever arm 39 in order to absorb the pressure.

Die Funktionsweise der vorliegenden Erfindung ist die folgende:
In einer Ausgangslage werden die beiden Walzwerkzeuge 4 und 5 über den Getriebemotor 17, die Getriebeteile 14 und 15, die Gelenkwellen 13 und die Wellen 6 in Drehung um ihre Achsen 7 und 8 versetzt. Diese Drehung verläuft gegenläufig. In den Abstand a zwischen den beiden Walzwerkzeugen 4 und 5 wird dann ein Werkstück, beispielsweise ein Stangenabschnitt eingeführt, dem über das entsprechende Umfangsprofil der Walzwerkzeuge 4 und 5 die entsprechende Gewindeprofilierung mitgegeben wird.The operation of the present invention is as follows:
In a starting position, the two rolling tools 4 and 5 are set in rotation about their axes 7 and 8 via the geared motor 17, the gear parts 14 and 15, the cardan shafts 13 and the shafts 6. This rotation runs in the opposite direction. A workpiece, for example a rod section, is then introduced into the distance a between the two rolling tools 4 and 5, and the corresponding thread profile is given via the corresponding peripheral profile of the rolling tools 4 and 5.

Zum Verstellen dieses Abstandes a wird über den Antrieb 32 und das Getriebe 31 der Zentralhebel 21 in Bewegung gesetzt, wobei er sich um seine Achse A dreht.To adjust this distance a, the central lever 21 is set in motion via the drive 32 and the gear 31, wherein it rotates about its axis A.

Über die jeweilige Traverse 37 wird diese Bewegung auch auf den jeweiligen Hebelarm 39 übertragen, der um den gehäusefesten Drehpunkt 40 dreht. Dabei verschiebt er seinen Führungsschlitten 10 in der entsprechenden Führungsrinne 18. Hierdurch wird eine vollkommen synchrone Bewegung der Führungsschlitten erreicht, so daß ein Nachstellen der Walzwerkzeuge 4 und 5 wegen unterschiedlicher Verstellung in Richtung x zueinander entfällt.Via the respective cross member 37, this movement is also transmitted to the respective lever arm 39, which rotates about the pivot point 40 fixed to the housing. He moves his guide carriage 10 in the corresponding guide trough 18. In this way, a completely synchronous movement of the guide carriage is achieved, so that there is no need to readjust the rolling tools 4 and 5 because of different adjustment in the x direction.

Die vorliegende erfindungsgemäße Anordnung ist nicht etwa nur auf die waagerechte Anordnung beider Walzwerkzeuge zueinander beschränkt, sondern sie kann genauso bei einer senkrechten oder schrägen Anordnung funktionieren. Hier besteht keinerlei Unterschied in der sehr positiven Wirkungsweise.The present arrangement according to the invention is not only limited to the horizontal arrangement of the two rolling tools with respect to one another, but it can also function in the case of a vertical or oblique arrangement. There is no difference in the very positive effect.

Claims (7)

  1. Apparatus for the rolling of threads or similar profiles by means of two rolling tools which rotate in the same direction and of which the mutual spacing is variable, the rolling tools being arranged on corresponding displaceable guide carriages for the synchronous variation of their mutual spacing, characterised in that the two rolling tools (4, 5) or the guide carriages (10) thereof are connected via a lever arm (39) and a cross member (37) in each case to a vane (24) of a central lever (21) in each case, which can be rotated by a drive (32) round an axis (A), wherein the lever arm (39) has, between an articulation (38) to the cross member (37) and a connection to the guide carriage (10), a Pivot (40) which is fixed on the casing and the connection to the guide carriage (10) is produced in that the lever arm (39) in a recess (41) in the guide carriage (10) holds a displaceable pressure plate (45), which is limited by the recess (41), via a pin (42).
  2. Apparatus according to claim 1, characterised in that the pressure plate (45) is guided between a limiting plate (43) and a further pressure plate (44).
  3. Apparatus according to claim 1 or 2, characterised in that the cross member (37) consists of two strips (35, 36) which strike the central lever (21) on either side of a vane (24).
  4. Apparatus according to claim 3, characterised in that the connection of the strips (35, 36) to the vanes (24) is made in an articulated manner via a central pin (33).
  5. Apparatus according to at least one of claims 1 to 4, characterised in that the vanes (24) are shaped on both sides on a tube (22) which rotates round the axis (A) in corresponding bearings (26, 29) fixed on the casing.
  6. Apparatus according to at least one of claims 1 to 5, characterised in that the drive (32) for the central lever (21) is a double-action linear cylinder or sealed piston cylinder.
  7. Apparatus according to claim 5 or 6, characterised in that a shaft end (30) of a gear system (31) which is connected to the drive (32) engages in an axial bore (23) in the tube (22).
EP88115751A 1987-10-07 1988-09-24 Apparatus for rolling threads or similar profiles Expired - Lifetime EP0310898B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88115751T ATE69748T1 (en) 1987-10-07 1988-09-24 DEVICE FOR ROLLING THREADS OD. DGL. PROFILES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8713454U DE8713454U1 (en) 1987-10-07 1987-10-07
DE8713454U 1987-10-07

Publications (2)

Publication Number Publication Date
EP0310898A1 EP0310898A1 (en) 1989-04-12
EP0310898B1 true EP0310898B1 (en) 1991-11-27

Family

ID=6812839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115751A Expired - Lifetime EP0310898B1 (en) 1987-10-07 1988-09-24 Apparatus for rolling threads or similar profiles

Country Status (4)

Country Link
EP (1) EP0310898B1 (en)
AT (1) ATE69748T1 (en)
DE (2) DE8713454U1 (en)
ES (1) ES2028967T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1762313A1 (en) 2005-09-12 2007-03-14 Rollwalztechnik Abele + Höltich Gmbh Device for deforming a workpiece
WO2015007386A1 (en) 2013-07-17 2015-01-22 Rollwalztechnik Abele + Höltich GmbH Device for machining a workpiece

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4022197B4 (en) * 1990-07-12 2006-09-21 Rollwalztechnik Abele + Höltich GmbH Device for re-rolling threads
DE19710730B4 (en) * 1997-03-14 2004-09-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Rolling process and two-roll profile rolling machine for producing pitch profiles with an odd number of turns on rotationally symmetrical workpieces
US6920772B1 (en) * 2003-02-12 2005-07-26 Morgan Construction Company Pinch roll unit
DE102005042901B3 (en) 2005-09-08 2007-05-24 Rollwalztechnik Abele + Höltich GmbH Method and device for deforming a workpiece
CN101291752A (en) * 2005-10-12 2008-10-22 Sms迪马格股份公司 Device for making working roller suitable for rolling line

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Publication number Priority date Publication date Assignee Title
DE149181C (en) *
DE749699C (en) * 1941-11-18 1944-11-30 Pee Wee Maschinen Und Appbau I Device for cold surface press rolling of round workpieces
DE1479229B2 (en) * 1965-10-02 1975-06-05 5201 Lohmar Device for the production of hollow bodies from thermoplastic material by the blow molding process
FR1489069A (en) * 1966-04-22 1967-07-21 Spidem Ste Nle Device for varying the forces on the working chocks in multicylinder rolling mills
DE2523837A1 (en) * 1975-05-30 1976-12-02 Juergen Abele Thread rolling machine - with thread rolls on two armed levers spread apart by wedge thrust at upper end
DE3508259A1 (en) * 1985-03-08 1986-09-11 J.W. Froehlich Maschinenfabrik GmbH, 7310 Plochingen PROFILE AND THREAD ROLLING MACHINE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1762313A1 (en) 2005-09-12 2007-03-14 Rollwalztechnik Abele + Höltich Gmbh Device for deforming a workpiece
WO2015007386A1 (en) 2013-07-17 2015-01-22 Rollwalztechnik Abele + Höltich GmbH Device for machining a workpiece
DE102013107603A1 (en) 2013-07-17 2015-01-22 Rollwalztechnik Abele + Höltich GmbH Device for processing a workpiece

Also Published As

Publication number Publication date
DE8713454U1 (en) 1988-02-04
ATE69748T1 (en) 1991-12-15
ES2028967T3 (en) 1992-07-16
EP0310898A1 (en) 1989-04-12
DE3866499D1 (en) 1992-01-09

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