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EP1762313B1 - Device for deforming a workpiece - Google Patents

Device for deforming a workpiece Download PDF

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Publication number
EP1762313B1
EP1762313B1 EP06018129A EP06018129A EP1762313B1 EP 1762313 B1 EP1762313 B1 EP 1762313B1 EP 06018129 A EP06018129 A EP 06018129A EP 06018129 A EP06018129 A EP 06018129A EP 1762313 B1 EP1762313 B1 EP 1762313B1
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EP
European Patent Office
Prior art keywords
tool
drive
spindle
synchronizing
workpiece
Prior art date
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EP06018129A
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German (de)
French (fr)
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EP1762313A1 (en
Inventor
Helmut Sproll
Arne Höltich
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Rollwalztechnik Abele and Holtich GmbH
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Rollwalztechnik Abele and Holtich GmbH
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Publication of EP1762313A1 publication Critical patent/EP1762313A1/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

Definitions

  • the invention relates to a device for machining a workpiece by means of at least two tools, which are synchronous to the workpiece to be moved via a Gleichlaufeinrichung, the one tool, a drive for this movement and the other tool is assigned a rigid connection between this and the drive.
  • a generic device is from the document DD 200 146 known, in which a tool by means of a hydraulic device to the workpiece to be machined is to be moved, which is rigidly connected via tie bar with the other tool without drive, so that when a confirmation of the hydraulic both tools can move towards each other.
  • a simple mechanical synchronizing device is furthermore provided, in which a frame-fixed pinion meshes between toothed racks on the hydraulic device and the tension clamps.
  • a generic rolling device is known in which a kind of synchronous balance is provided between the two successive movable tool slide. This synchronous balance is hinged diagonally to the tool slide, whereby tilting of these slides is possible, especially in this device, no additional rigid connection between the two tool slides is provided, which are instead moved toward each other by means of a common piston rod.
  • the object of the present invention is to substantially improve the guidance of the tools and to simplify the introduction of force for moving the tools.
  • a synchronous lever arrangement in the form of a synchronous balance serves as synchronizing device, by means of which the two tools are connected to each other in addition to the rigid connection.
  • the drive itself should be carried out in the plane of movement, preferably even axially parallel or even axially aligned with the movement of the tools.
  • the drive itself can be integrated in the same housing or in the same housing frame in which the tools are guided. This results in a much better possibility of power transmission and accuracy of machining.
  • the drive can be outside the axial direction of movement of the tools, but then connected via corresponding angle lever or angle rockers with the tools.
  • the introduction of force is worsened and the space requirement is significantly increased. Therefore, the arrangement of the drive in the axis of movement of the tools is preferred.
  • the rigid connection can be made via at least one cross member, which connects the drive with the other tool.
  • the Traverse should be of secondary importance.
  • the traverse can be plate-shaped or swinging. In a preferred embodiment, the traverse overlaps the one tool, so that this tool between the drive and the other tool is arranged.
  • a drive is preferred in which the actual feed movement is effected by a mechanical spindle drive, while the working stroke is carried out by means of a pressure medium:
  • the drive has a cylinder in which a piston moves in a pressure space. This piston is penetrated by the spindle, wherein an external thread of the spindle meshes in an internal thread of the piston.
  • the piston is guided along the spindle, when filling the pressure chamber with a pressure medium, the piston takes the spindle in the working direction.
  • Both the drive and the two tools are preferably guided on tie rods, which extend between two outer plates. This means that all three machine components have a common guide and are "floating" on the tie rods. As a result, the guide of the drive and the two tools or of housings in which the tools are mounted, simplified and improved, since an axial or axially parallel force applied to the tools.
  • This possible inaccuracy is avoided by a synchronous lever assembly which connects the two tools together.
  • This synchronizer lever assembly has a stationary pivot point about which a synchronous balance rotates, which forms a toggle lever assembly with a respective synchronizer lever, which in turn is connected to the respective tool.
  • FIG. 1 protrude from a base plate 1 opposite outer plates 13 and 14.
  • the outer plates 13 and 14 are connected to each other via tie rods, with only two tie rods 2.1 and 2.2 are shown.
  • further tie rods are located under these tie rods, so that a fourfold guide is provided.
  • a drive A and two tools W 1 and W 2 are slidably mounted.
  • said pressure roller is arranged on a roller spindle 10.1 or 10.2.
  • Each roller spindle 10.1 or 10.2 is associated with a drive 20.1 or 20.2, which directly or else, as in the EP 0 310 893 B1 shown, can be done via appropriate propeller shafts. It is also conceivable to provide only one drive, in which case the two rolling spindles 10.1 and 10.2 are connected to each other by gear technology.
  • Each tool W 1 and W 2 is located in or on a roller spindle housing 8 or 9, wherein the roller spindle housing 8 is referred to as a feed housing and the roller spindle housing 9 as a housing Holschen for distinction.
  • the roller spindle housing 8 is referred to as a feed housing and the roller spindle housing 9 as a housing Holschen for distinction.
  • Feed housing 8 of the drive A against a in FIG. 2 shown workpiece 27, which is located between the two tools W 1 and W 2 is advanced, while the other tool W 2 is pulled from the drive A in a manner to be described later way to the workpiece.
  • a synchronous balance 18 is fixedly arranged on a central plate 7, where it rotates about the central pin 19 there.
  • the synchronous balance 18 is pivotably connected via a pin 17.1 with a synchronizing lever 16.1 and the other end via a further pin 17.2 with another synchronizing lever 16.2.
  • the free ends of the synchronizing levers 16.1 and 16.2 enter into an articulated connection via a corresponding bearing pin 15.1 and 15.2 with the advancing housing 8 or the housing 9, respectively.
  • the feed housing 8 is assigned to the drive A. It has a connection with a spindle 12 and a piston 4, which is arranged in a cylinder 3.
  • the spindle 12 passes through the piston 4 and meshes with an external thread 21 an internal thread in the piston 4.
  • the piston 4 can in turn slide in the cylinder 3 in the region of a pressure chamber 23, wherein a corresponding inlet for a pressure medium with 24 and a corresponding, only dashed lines indicated outlet for the pressure medium are marked with 25.
  • the cylinder 3 is located on a cylinder plate 5, which at the other end, the piston 4 also circumferentially, a Hubbegrenzungsmutter 6 is attached.
  • the spindle 12 further passes through a bushing 11 in the outer plate 13, wherein the bushing 11 is formed as an adjusting bush and represents a hand rim, with which the spindle 12 can be rotated.
  • FIG. 2 is shown schematically, the cylinder 3 is connected via two trusses 26.1 and 26.2 rigidly connected to the Holgephaseuse 9.
  • the cross members 26.1 and 26.2 engage over the feed housing 8.
  • the tool W 2 also follows the axial movement of the drive A and is thus moved toward the workpiece 27.
  • the actual working stroke is then carried out by acting on the pressure chamber 23 behind the piston 4 through the inlet 24, wherein the movement of the piston 4 is transmitted to the spindle 12 and the spindle 12 on the feed housing 8 and the tool W 1 .
  • it is only the transmission of half of the working path, since the other half is in turn transmitted via the trusses 26.1 and 26.2 on the Holgeophuse 9. In this way, both delivery stroke and stroke are synchronized between the two tools W 1 and W 2 .
  • the synchronizer lever arrangement serves only to compensate for possible irregularities in the movement of the tools W 1 and W 2 or of the feed housing 8 and the housing 9. If, for example, these housings are subject to different frictional states on the tie rods, then frictions are compensated by the synchronizer lever arrangement.
  • the actual power transmission during delivery and during the working stroke is preferably carried out exclusively by the drive A and the spindle assembly 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Machine Tool Units (AREA)
  • Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
  • Adornments (AREA)

Abstract

The second tool (W2) has rigid connections with the drive. The rigid connection comprises traverses joining them. These are in the form of flat links. The traverse overlaps a tool (W1) between the drive (A) and the other tool (W2). One tool (W1) is connected to the other (W2) through a synchronous lever arrangement (16.1, 16.2). The synchronous lever assembly includes a synchronous balance (18) with fixed rotation center (19) and two ends. These are pivoted to synchronous levers (16.1, 16.2), one connected to the first tool and the other to the second tool. The rotation center is at the height of the workpiece. The drive (A) includes a piston cylinder unit (3), the cylinder being arranged on a plate (5). The cylinder plate can be moved along tie bars (2.1, 2.2). A spindle (12) penetrates the drive, which is connected to the tool (W1). The spindle penetrates the piston with an external thread, which engages an internal thread in the piston. The tools can also be moved along the tie bars. Each tool is in a casing. One casing is a feed casing (8). The casing rigidly connected to the drive serves as a hollow casing (9). Tie bars extend between the outer plates (13, 14). The spindle (12) penetrates an adjustment collar (11) in an outer plate (13).

Description

Die Erfindung betrifft eine Vorrichtung zum Bearbeiten eines Werkstücks mittels zumindest zweier Werkzeuge, welche über eine Gleichlaufeinrichung synchron auf das Werkstück zu bewegbar sind, wobei dem einen Werkzeug ein Antrieb für diese Bewegung und dem anderen Werkzeug eine starre Verbindung zwischen diesem und dem Antrieb zugeordnet ist.The invention relates to a device for machining a workpiece by means of at least two tools, which are synchronous to the workpiece to be moved via a Gleichlaufeinrichung, the one tool, a drive for this movement and the other tool is assigned a rigid connection between this and the drive.

Stand der TechnikState of the art

Vorrichtungen zum Bearbeiten von Werkstücken gibt es einer Vielzahl, bspw. als Pressen oder Stanzen. Eine Reihe von derartigen Vorrichtungen sind auch vorgesehen, um ein Werkstück von zumindest zwei Seiten her zu bearbeiten. Hier sollen vor allem Vorrichtungen erwähnt werden, welche in das Werkstück eine gewünschte Profilierung einformen. Hierzu zählen vor allem Gewindewalzmaschinen, wobei die vorliegende Erfindung jedoch darauf nicht beschränkt sein soll.There are a variety of devices for machining workpieces, for example. As pressing or punching. A number of such devices are also provided to machine a workpiece from at least two sides. Here, especially devices are to be mentioned, which form a desired profiling in the workpiece. These include above all Thread rolling machines, but the present invention should not be limited thereto.

Bei einer bekannten Gewindewalzmaschine nach der EP 0 310 898 B1 werden die beiden Druckwalzen über eine Kniehebelanordnung synchron bewegt. Dabei weist diese Vorrichtung, die sich in der Praxis sehr bewährt hat, eine Vielzahl von Gelenkpunkten, insbesondere Gleichlaufgelenke auf, die geschmiert werden müssen. Diese Schmierung stellt ein Problem dar, welches zwar lösbar, aber aufwendig ist. Vor allem auch die Führung der Werkzeuge selbst in Führungsschlitten in entsprechenden Gehäuserahmen stellt ein Problem dar.In a known thread rolling machine after the EP 0 310 898 B1 the two pressure rollers are moved synchronously via a toggle lever arrangement. In this case, this device, which has proven very successful in practice, a variety of articulation points, especially constant velocity joints that need to be lubricated. This lubrication is a problem which, while solvable, but consuming. Especially the guidance of the tools themselves in guide carriage in corresponding housing frame is a problem.

Eine gattungsgemäße Vorrichtung ist aus der Druckschrift DD 200 146 bekannt, bei der das eine Werkzeug mittels einer Hydraulikeinrichtung auf das zu bearbeitende Werkstück zu bewegbar ist, welches über Zugbügel starr mit dem anderen Werkzeug ohne Antrieb verbunden ist, sodass sich dadurch bei einer Bestätigung der Hydraulik beide Werkzeuge aufeinander zu bewegen können. Damit dies einigermaßen symmetrisch erfolgt, ist ferner eine einfache mechanische Gleichlaufeinrichtung vorgesehen, bei der ein gestellfestes Ritzel zwischen Zahnstangen an der Hydraulikeinrichtung und den Zugbügeln kämmt. Mit dieser Gleichlaufeinrichtung können jedoch nur sehr geringe, vornehmlich durch Reibungskräfte bedingte Differenzen ausgeglichen werden. Ferner ist aus der US 5, 339, 669 eine gattungsgemäße Walzvorrichtung bekannt, bei der zwischen den beiden aufeinander zu bewegbaren Werkzeugschlitten eine Art Synchronwaage vorgesehen ist. Diese Synchronwaage ist dabei diagonal an den Werkzeugschlitten angelenkt, wodurch ein Verkanten dieser Schlitten möglich ist, zumal bei dieser Vorrichtung keine zusätzliche starre Verbindung zwischen den beiden Werkzeugschlitten vorgesehen ist, welche stattdessen mittels einer gemeinsamen Kolbenstange aufeinander zu bewegt werden.A generic device is from the document DD 200 146 known, in which a tool by means of a hydraulic device to the workpiece to be machined is to be moved, which is rigidly connected via tie bar with the other tool without drive, so that when a confirmation of the hydraulic both tools can move towards each other. To make this reasonably symmetrical, a simple mechanical synchronizing device is furthermore provided, in which a frame-fixed pinion meshes between toothed racks on the hydraulic device and the tension clamps. However, only very small, mainly caused by frictional forces differences can be compensated with this synchronization device. Furthermore, from the US Pat. No. 5,339,669 a generic rolling device is known in which a kind of synchronous balance is provided between the two successive movable tool slide. This synchronous balance is hinged diagonally to the tool slide, whereby tilting of these slides is possible, especially in this device, no additional rigid connection between the two tool slides is provided, which are instead moved toward each other by means of a common piston rod.

Aufgabetask

Aufgabe der vorliegenden Erfindung ist es, die Führung der Werkzeuge wesentlich zu verbessern und die Krafteinleitung zum Bewegen der Werkzeuge zu vereinfachen.The object of the present invention is to substantially improve the guidance of the tools and to simplify the introduction of force for moving the tools.

Lösung der AufgabeSolution of the task

Zur Lösung der Aufgabe führt, dass als Gleichlaufeinrichtung eine Synchronhebelanordnung in der Form einen Synchronwaage dient, durch welche die beiden Werkzeuge zusätzlich zu der starren Verbindung mittig miteinander verbunden sind.To achieve the object, that a synchronous lever arrangement in the form of a synchronous balance serves as synchronizing device, by means of which the two tools are connected to each other in addition to the rigid connection.

Bevorzugt soll nach der vorliegenden Erfindung der Antrieb selbst in der Bewegungsebene, bevorzugt sogar achsparallel oder sogar axial ausgerichtet mit der Bewegung der Werkzeuge erfolgen. Dies bedeutet, dass der Antrieb selbst in das gleiche Gehäuse bzw. in den gleichen Gehäuserahmen integriert sein kann, in dem auch die Werkzeuge geführt sind. Dies ergibt eine wesentlich bessere Möglichkeit der Kraftübertragung und der Genauigkeit der Bearbeitung.Preferably, according to the present invention, the drive itself should be carried out in the plane of movement, preferably even axially parallel or even axially aligned with the movement of the tools. This means that the drive itself can be integrated in the same housing or in the same housing frame in which the tools are guided. This results in a much better possibility of power transmission and accuracy of machining.

Dabei soll vom Erfindungsgedanken jedoch auf umfasst sein, dass der Antrieb ausserhalb der axialen Bewegungsrichtung der Werkzeuge liegen kann, jedoch dann über entsprechende Winkelhebel oder Winkelschwingen mit den Werkzeugen verbunden ist. Dabei ist die Krafteinleitung natürlich verschlechtert und auch der Raumbedarf wesentlich erhöht. Deshalb wird die Anordnung des Antriebes in der Bewegungsachse der Werkzeuge bevorzugt.However, it should be encompassed by the idea of the invention that the drive can be outside the axial direction of movement of the tools, but then connected via corresponding angle lever or angle rockers with the tools. Of course, the introduction of force is worsened and the space requirement is significantly increased. Therefore, the arrangement of the drive in the axis of movement of the tools is preferred.

Die starre Verbindung kann über zumindest eine Traverse erfolgen, welche den Antrieb mit dem anderen Werkzeug verbindet. Wie die Traverse ausgestaltet ist, soll von untergeordneter Bedeutung sein. Beispielsweise kann die Traverse platten- oder schwingenförmig sein. In einem bevorzugten Ausführungsbeispiel übergreift die Traverse das eine Werkzeug, so dass dieses Werkzeug zwischen dem Antrieb und dem anderen Werkzeug angeordnet ist.The rigid connection can be made via at least one cross member, which connects the drive with the other tool. How the Traverse is designed, should be of secondary importance. For example, the traverse can be plate-shaped or swinging. In a preferred embodiment, the traverse overlaps the one tool, so that this tool between the drive and the other tool is arranged.

Auch für den Antrieb selbst ergeben sich viele Möglichkeiten. Bevorzugt wird ein Antrieb, bei dem die eigentliche Zustellbewegung durch einen mechanischen Spindeltrieb erfolgt, während der Arbeitshub mittels eines Druckmediums durchgeführt wird: Zu diesem Zweck besitzt der Antrieb einen Zylinder, in welchem sich eine Kolben in einem Druckraum bewegt. Dieser Kolben wird von der Spindel durchsetzt, wobei ein Aussengewinde der Spindel in einem Innengewinde des Kolbens kämmt. Beim Drehen der Spindel wird der Kolben entlang der Spindel geführt, beim Befüllen des Druckraumes mit einem Druckmedium nimmt der Kolben die Spindel in die Arbeitsrichtung mit.Also for the drive itself there are many possibilities. A drive is preferred in which the actual feed movement is effected by a mechanical spindle drive, while the working stroke is carried out by means of a pressure medium: For this purpose, the drive has a cylinder in which a piston moves in a pressure space. This piston is penetrated by the spindle, wherein an external thread of the spindle meshes in an internal thread of the piston. When turning the spindle, the piston is guided along the spindle, when filling the pressure chamber with a pressure medium, the piston takes the spindle in the working direction.

Bevorzugt sind sowohl Antrieb wie auch die beiden Werkzeuge an Zugankern geführt, die sich zwischen zwei Aussenplatten erstrecken. Das bedeutet, dass alle drei Maschinenbestandteile eine gemeinsame Führung aufweisen und an den Zugankern "schwimmend" gelagert sind. Hierdurch ist die Führung von Antrieb und den beiden Werkzeugen bzw. von Gehäusen, in denen die Werkzeuge gelagert sind, vereinfacht und verbessert, da ein axiale bzw. achsparallele Kraftbeaufschlagung der Werkzeuge erfolgt.Both the drive and the two tools are preferably guided on tie rods, which extend between two outer plates. This means that all three machine components have a common guide and are "floating" on the tie rods. As a result, the guide of the drive and the two tools or of housings in which the tools are mounted, simplified and improved, since an axial or axially parallel force applied to the tools.

Da es bei der Führung von den Werkzeuggehäusen bzw. Antrieb zu Ungleichmässigkeiten in Folge von ungleichmässigen Reibungszuständen kommen kann, die Teile aber an den Zugankern schwimmend gelagert sind, könnte es auch zu Ungenauigkeiten der Verstellung der Werkzeuge gegenüber dem Werkstück kommen. Diese mögliche Ungenauigkeit wird durch eine Synchronhebelanordnung vermieden, welche die beiden Werkzeuge miteinander verbindet. Diese Synchronhebelanordnung besitzt einen ortsfesten Drehpunkt, um den eine Synchronwaage dreht, die mit jeweils einem Synchronhebel, der wiederum mit dem jeweiligen Werkzeug verbunden ist, eine Kniehebelanordnung ausbildet.Since in the leadership of the tool housings or drive to unevenness may result from uneven friction conditions, but the parts are floatingly mounted on the tie rods, it could also lead to inaccuracies in the adjustment of the tools relative to the workpiece. This possible inaccuracy is avoided by a synchronous lever assembly which connects the two tools together. This synchronizer lever assembly has a stationary pivot point about which a synchronous balance rotates, which forms a toggle lever assembly with a respective synchronizer lever, which in turn is connected to the respective tool.

FIGURENBESCHREIBUNGDESCRIPTION OF THE FIGURES

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

  • Figur 1 eine teilweise aufgebrochen dargestellte Draufsicht auf eine erfindungsgemässe Vorrichtung zum Bearbeiten eines Werkstückes;
  • Figur 2 eine schematisch dargestellte Draufsicht auf Teile der Vorrichtung gemäss Figur 1.
Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing; this shows in
  • FIG. 1 a partially broken plan view of an inventive apparatus for machining a workpiece;
  • FIG. 2 a schematically illustrated plan view of parts of the device according to FIG. 1 ,

Gemäss Figur 1 ragen von einer Grundplatte 1 sich gegenüberliegend Aussenplatten 13 und 14 auf. Die Aussenplatten 13 und 14 sind über Zuganker miteinander verbunden, wobei nur zwei Zuganker 2.1 und 2.2 dargestellt sind. Bevorzugt befinden sich unter diesen Zugankern jeweils weitere Zuganker, so dass eine vierfach Führung gegeben ist.According to FIG. 1 protrude from a base plate 1 opposite outer plates 13 and 14. The outer plates 13 and 14 are connected to each other via tie rods, with only two tie rods 2.1 and 2.2 are shown. Preferably, further tie rods are located under these tie rods, so that a fourfold guide is provided.

An den Zugankern 2.1 und 2.2 sind ein Antrieb A sowie zwei Werkzeuge W1 und W2 verschiebbar gelagert. Im gezeigten Ausführungsbeispiel handelt es sich um jeweils eine Druckrolle zum Walzen von Gewinden oder dergleichen Profile, wobei diese Druckrolle an einer Walzspindel 10.1 bzw. 10.2 angeordnet ist. Jeder Walzspindel 10.1 bzw. 10.2 ist ein Antrieb 20.1 bzw. 20.2 zugeordnet, was direkt oder aber auch, wie in der EP 0 310 893 B1 gezeigt, über entsprechende Gelenkwellen erfolgen kann. Denkbar ist auch das Vorsehen von nur einem Antrieb, wobei dann die beiden Walzspindeln 10.1 und 10.2 getriebetechnisch miteinander verbunden sind.At the tie rods 2.1 and 2.2, a drive A and two tools W 1 and W 2 are slidably mounted. In the embodiment shown, it is in each case a pressure roller for rolling threads or similar profiles, said pressure roller is arranged on a roller spindle 10.1 or 10.2. Each roller spindle 10.1 or 10.2 is associated with a drive 20.1 or 20.2, which directly or else, as in the EP 0 310 893 B1 shown, can be done via appropriate propeller shafts. It is also conceivable to provide only one drive, in which case the two rolling spindles 10.1 and 10.2 are connected to each other by gear technology.

Jedes Werkzeug W1 und W2 befindet sich in oder an einem Walzspindelgehäuse 8 bzw. 9, wobei zur Unterscheidung das Walzspindelgehäuse 8 als Vorschubgehäuse und das Walzspindelgehäuse 9 als Holgehäuse bezeichnet wird. Dies geschieht aus dem Grund, da das Vorschubgehäuse 8 von dem Antrieb A gegen ein in Figur 2 gezeigtes Werkstück 27, welches sich zwischen den beiden Werkzeugen W1 und W2 befindet, vorgeschoben wird, während das andere Werkzeug W2 von dem Antrieb A auf eine später zu beschreibende Art und Weise zum Werkstück hingeholt wird.Each tool W 1 and W 2 is located in or on a roller spindle housing 8 or 9, wherein the roller spindle housing 8 is referred to as a feed housing and the roller spindle housing 9 as a housing Holschen for distinction. This happens for the reason that that Feed housing 8 of the drive A against a in FIG. 2 shown workpiece 27, which is located between the two tools W 1 and W 2, is advanced, while the other tool W 2 is pulled from the drive A in a manner to be described later way to the workpiece.

Das Vorschubgehäuse 8 und das Holgehäuse 9 sind über eine Synchronhebelanordnung miteinander gekoppelt. Hierzu ist eine Synchronwaage 18 ortsfest an einer Mittelplatte 7 angeordnet, wobei sie dort um den Zentralbolzen 19 dreht. Einends ist die Synchronwaage 18 über einen Bolzen 17.1 mit einem Synchronhebel 16.1 und anderenends über einen weiteren Bolzen 17.2 mit einem weiteren Synchronhebel 16.2 gelenkig verbunden. Die freien Enden der Synchronhebel 16.1 und 16.2 gehen wiederum eine gelenkige Verbindung über einen entsprechenden Lagerbolzen 15.1 und 15.2 mit dem Vorschubgehäuse 8 bzw. dem Holgehäuse 9 ein,The feed housing 8 and the housing Hol 9 are coupled together via a synchronous lever assembly. For this purpose, a synchronous balance 18 is fixedly arranged on a central plate 7, where it rotates about the central pin 19 there. At one end, the synchronous balance 18 is pivotably connected via a pin 17.1 with a synchronizing lever 16.1 and the other end via a further pin 17.2 with another synchronizing lever 16.2. The free ends of the synchronizing levers 16.1 and 16.2, in turn, enter into an articulated connection via a corresponding bearing pin 15.1 and 15.2 with the advancing housing 8 or the housing 9, respectively.

Das Vorschubgehäuse 8 ist dem Antrieb A zugeordnet. Dabei besitzt es eine Verbindung mit einer Spindel 12 und einem Kolben 4, der in einem Zylinder 3 angeordnet ist. Die Spindel 12 durchsetzt den Kolben 4 und kämmt mit einem Aussengewinde 21 ein Innengewinde in dem Kolben 4. Der Kolben 4 kann wiederum in dem Zylinder 3 im Bereich eines Druckraumes 23 gleiten, wobei ein entsprechender Einlass für ein Druckmedium mit 24 und ein entsprechender, nur gestrichelt angedeuteter Auslass für das Druckmedium mit 25 gekennzeichnet sind. Der Zylinder 3 befindet sich an einer Zylinderplatte 5, welcher anderenends, den Kolben 4 ebenfalls umfangend, eine Hubbegrenzungsmutter 6 angesetzt ist.The feed housing 8 is assigned to the drive A. It has a connection with a spindle 12 and a piston 4, which is arranged in a cylinder 3. The spindle 12 passes through the piston 4 and meshes with an external thread 21 an internal thread in the piston 4. The piston 4 can in turn slide in the cylinder 3 in the region of a pressure chamber 23, wherein a corresponding inlet for a pressure medium with 24 and a corresponding, only dashed lines indicated outlet for the pressure medium are marked with 25. The cylinder 3 is located on a cylinder plate 5, which at the other end, the piston 4 also circumferentially, a Hubbegrenzungsmutter 6 is attached.

Die Spindel 12 durchsetzt des weiteren eine Buchse 11 in der Aussenplatte 13, wobei die Buchse 11 als Verstellbuchse ausgebildet ist und ein Handrand darstellt, mit dem die Spindel 12 gedreht werden kann.The spindle 12 further passes through a bushing 11 in the outer plate 13, wherein the bushing 11 is formed as an adjusting bush and represents a hand rim, with which the spindle 12 can be rotated.

In Figur 2 ist schematisch dargestellt, das der Zylinder 3 über zwei Traversen 26.1 und 26.2 starr mit dem Holgehäuse 9 verbunden ist. Dabei übergreifen die Traversen 26.1 und 26.2 das Vorschubgehäuse 8.In FIG. 2 is shown schematically, the cylinder 3 is connected via two trusses 26.1 and 26.2 rigidly connected to the Holgehäuse 9. The cross members 26.1 and 26.2 engage over the feed housing 8.

In dieser Figur ist ferner das zu bearbeitende Werkstück 27 erkennbar, welches in der theoretischen Werkstückmitte 28 liegt.In this figure, the workpiece to be machined 27 is further recognizable, which lies in the theoretical workpiece center 28.

Die Funktionsweise der vorliegenden Erfindung ist folgende:

  • Ein zu bearbeitendes Werkstück 27 wird zwischen den beiden Werkzeugen W1 und W2 bspw. auf einem Werkstückträger angeordnet. Durch ein Drehen der Verstellbuchse 11, welche bspw. eine Verbindung durch eine Kerbverzahnung mit der Spindel 12 eingeht, erfolgt auch ein Drehen der Spindel 12. Die Spindel 12 dreht dabei mit ihrem Aussengewinde in dem Innengewinde des Kolbens 4, wobei diese Gewinde so abgestimmt sind, dass das Vorschubgehäuse 8 gegen das Werkstück 27 hin und der Kolben 4 zusammen mit dem gesamten Antrieb A jeweils in gleichem Masse von dem Werkstück 27 wegbewegt wird. Die Spindel 12 selbst ist somit in Richtung des Doppelpfeils x axial bewegbar.
The operation of the present invention is as follows:
  • A workpiece 27 to be machined is arranged, for example, on a workpiece carrier between the two tools W 1 and W 2 . By turning the adjusting bushing 11, which receives, for example, a connection by a serration with the spindle 12, there is also a rotation of the spindle 12. The spindle 12 rotates with its external thread in the internal thread of the piston 4, wherein these threads are tuned in that the feed housing 8 is moved away from the workpiece 27 towards the workpiece 27 and the piston 4, together with the entire drive A, is moved away from the workpiece 27 to the same extent in each case. The spindle 12 itself is thus axially movable in the direction of the double arrow x.

Da der Zylinder 3 über die Traversen 26.1 und 26.2 fest mit dem Holgehäuse 9 verbunden ist, folgt das Werkzeug W2 ebenfalls der axialen Bewegung des Antriebes A und wird somit zum Werkstück 27 hinbewegt.Since the cylinder 3 is connected via the trusses 26.1 and 26.2 fixed to the Holgehäuse 9, the tool W 2 also follows the axial movement of the drive A and is thus moved toward the workpiece 27.

Der eigentliche Arbeitshub erfolgt dann durch Beaufschlagung des Druckraumes 23 hinter dem Kolben 4 durch den Einlass 24, wobei die Bewegung des Kolbens 4 auf die Spindel 12 und über die Spindel 12 auch auf das Vorschubgehäuse 8 und das Werkzeug W1 übertragen wird. Es erfolgt aber lediglich die Übertragung der Hälfte des Arbeitsweges, da die andere Hälfte wiederum über die Traversen 26.1 und 26.2 auf das Holgehäuse 9 übertragen wird. Auf diese Weise sind sowohl Zustellhub als auch Arbeitshub zwischen den beiden Werkzeugen W1 und W2 synchronisiert.The actual working stroke is then carried out by acting on the pressure chamber 23 behind the piston 4 through the inlet 24, wherein the movement of the piston 4 is transmitted to the spindle 12 and the spindle 12 on the feed housing 8 and the tool W 1 . However, it is only the transmission of half of the working path, since the other half is in turn transmitted via the trusses 26.1 and 26.2 on the Holgehäuse 9. In this way, both delivery stroke and stroke are synchronized between the two tools W 1 and W 2 .

Die Synchronhebelanordnung dient lediglich dazu, mögliche Ungleichmässigkeiten in der Bewegung der Werkzeuge W1 und W2 bzw. von Vorschubgehäuse 8 und Holgehäuse 9 auszugleichen. Unterliegen bspw. diese Gehäuse unterschiedlichen Reibungszuständen an den Zugankern, so werden Friktionen durch die Synchronhebelanordnung ausgeglichen. Die eigentliche Kraftübertragung beim Zustell- und beim Arbeitshub erfolgt bevorzugt ausschliesslich durch den Antrieb A und die Spindelanordnung 12.The synchronizer lever arrangement serves only to compensate for possible irregularities in the movement of the tools W 1 and W 2 or of the feed housing 8 and the housing 9. If, for example, these housings are subject to different frictional states on the tie rods, then frictions are compensated by the synchronizer lever arrangement. The actual power transmission during delivery and during the working stroke is preferably carried out exclusively by the drive A and the spindle assembly 12.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11 Grundplattebaseplate 3434 6767 22 Zugankertie rods 3535 6868 33 Zylindercylinder 3636 6969 44 Kolbenpiston 3737 7070 55 Zylinderplattecylinder plate 3838 7171 66 Hubbegrenzungsmutterstopper nut 3939 7272 77 Mittelplattecenter plate 4040 7373 88th Vorschubgehäusefeed housing 4141 7474 99 HolgehäuseHolgehäuse 4242 7575 1010 Walzspindelroller spindle 4343 7676 1111 BuchseRifle 4444 7777 1212 Spindelspindle 4545 7878 1313 Aussenplatteouter plate 4646 7979 1414 Aussenplatteouter plate 4747 AA Antriebdrive 1515 Lagerbolzenbearing bolt 4848 1616 Synchronhebelsynchronous lever 4949 1717 Bolzenbolt 5050 1818 Synchronwaagesynchronous scale 5151 1919 Zentralbolzencentral bolt 5252 2020 Antriebdrive 5353 2121 Aussengewindeexternal thread 5454 2222 Innengewindeinner thread 5555 2323 Druckraumpressure chamber 5656 2424 Einlassinlet 5757 2525 Auslassoutlet 5858 2626 Traversetraverse 5959 2727 Werkstückworkpiece 6060 2828 WerkstückmitteWorkpiece center 6161 W1 W 1 das eine Werkzeugthe one tool 2929 6262 W2 W 2 das andere Werkzeugthe other tool 3030 6363 3131 6464 3232 6565 3333 6666 xx Bewegung von 12Movement of 12

Claims (12)

  1. Device for machining a workpiece (27) by means of at least two tools (W1, W2), which by means of a synchronizing device are movable in synchronism towards the workpiece (27), wherein there is associated with the one tool (W1) a drive (A) for this motion and with the other tool (W2) a rigid connection between the latter and the drive (A), characterized in that as a synchronizing device a synchronizing lever arrangement (16.1, 16.2) in the form of a synchronizing balance (18) is used, by means of which the two tools (W1, W2) in addition to the rigid connection are connected centrically to one another.
  2. Device according to claim 1, characterized in that the synchronizing balance (18) has a stationary pivot point (19) and two ends that are each connected in an articulated manner to a synchronizing lever (16.1, 16.2), wherein the one synchronizing lever (16.1) is connected to the one tool (W1) and the other synchronizing lever (16.2) is connected to the other tool (W2).
  3. Device according to claim.2, characterized in that the pivot point (19) of the synchronizing balance (18) is situated at the height of the workpiece (27) to be machined.
  4. Device according to one of the preceding claims, characterized in that the drive (A) comprises a cylinder (3), in which a piston (4) is movable in a pressure chamber (23).
  5. Device according to claim 4, characterized in that by way of a rigid connection the cylinder (3) is connected by two cross-members (26.1, 26.2) to the other tool (W2).
  6. Device according to claim 5, characterized in that the cylinder (3) is disposed on a cylinder plate (5).
  7. Device according to claim 6, characterized in that the cylinder plate (5) and the tools (W1, W2) are movable along tie-rods (2.1, 2.2).
  8. Device according to claim 7, characterized in that the tie-rods (2.1, 2.2) extend between two exterior plates 13, 14).
  9. Device according to one of claims 4 - 8, characterized in that the drive (A) is penetrated by a spindle (12) that is connected to the one tool (W1).
  10. Device according to claim 9, characterized in that the spindle (12) penetrates the spindle (4) with an external thread (21) that engages an internal thread (22) in the piston (4).
  11. Device according to claim 10, characterized in that the spindle (12) penetrates an adjusting bush (11) in one of the exterior plates (13).
  12. Device according to one of the preceding claims, characterized in that each tool (W1, W2) is situated in a housing, wherein the one housing serves as feed housing (8) and the housing rigidly connected to the drive (A) serves as retrieval housing (9).
EP06018129A 2005-09-12 2006-08-30 Device for deforming a workpiece Active EP1762313B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005043498A DE102005043498A1 (en) 2005-09-12 2005-09-12 Mechanism advancing two tools against workpiece being processed, e.g. thread rolling machine, includes tool with rigid connection to drive

Publications (2)

Publication Number Publication Date
EP1762313A1 EP1762313A1 (en) 2007-03-14
EP1762313B1 true EP1762313B1 (en) 2008-10-15

Family

ID=37763107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06018129A Active EP1762313B1 (en) 2005-09-12 2006-08-30 Device for deforming a workpiece

Country Status (3)

Country Link
EP (1) EP1762313B1 (en)
AT (1) ATE411123T1 (en)
DE (2) DE102005043498A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8713454U1 (en) 1987-10-07 1988-02-04 Rollwalztechnik Abele + Höltich GmbH, 7707 Engen Device for rolling threads or similar profiles
EP0310893B1 (en) 1987-10-09 1995-07-19 Asahi Glass Company Ltd. Vulcanizable fluororubber composition
FR2676668B1 (en) * 1991-05-23 1994-07-01 Escofier Tech Sa DEVICE AND METHOD FOR COLD FORMING OF GROOVES ON THE WALL OF A PIECE OF REVOLUTION.
DE4244720A1 (en) * 1992-02-13 1994-03-03 Wf Maschinenbau Blechformtech Method for manufacture of externally toothed gear
EP0947258B1 (en) * 1998-04-02 2006-08-16 Nissei Co. Ltd. Round die type form rolling apparatus
WO2003000442A1 (en) * 2001-06-21 2003-01-03 Nissei Co., Ltd. Method of rolling worm gear and the worm gear
DE10244483B4 (en) * 2002-09-24 2006-08-31 Profiroll Technologies Gmbh Profile rolling machine with power frame for rolling with externally toothed round rolling tools

Also Published As

Publication number Publication date
DE102005043498A1 (en) 2007-03-15
EP1762313A1 (en) 2007-03-14
DE502006001810D1 (en) 2008-11-27
ATE411123T1 (en) 2008-10-15

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