EP0348711A2 - Device for axially shifting rolls in the stand of a rolling mill - Google Patents

Device for axially shifting rolls in the stand of a rolling mill Download PDF

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Publication number
EP0348711A2
EP0348711A2 EP89110436A EP89110436A EP0348711A2 EP 0348711 A2 EP0348711 A2 EP 0348711A2 EP 89110436 A EP89110436 A EP 89110436A EP 89110436 A EP89110436 A EP 89110436A EP 0348711 A2 EP0348711 A2 EP 0348711A2
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EP
European Patent Office
Prior art keywords
bearing
axial
roller
stand
radial
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89110436A
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German (de)
French (fr)
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EP0348711B1 (en
EP0348711A3 (en
Inventor
Helmut Setzer
Axel Sprenger
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SMS Siemag AG
Original Assignee
SMS Schloemann Siemag AG
Schloemann Siemag AG
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Publication of EP0348711A2 publication Critical patent/EP0348711A2/en
Publication of EP0348711A3 publication Critical patent/EP0348711A3/en
Application granted granted Critical
Publication of EP0348711B1 publication Critical patent/EP0348711B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B31/00Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16Adjusting or positioning rolls
    • B21B31/18Adjusting or positioning rolls by moving rolls axially
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B31/00Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/07Adaptation of roll neck bearings

Definitions

  • the invention relates to a device for the axial displacement of rolls in the stand of a rolling mill, in particular the work rolls of a hot or cold rolling mill, the rolls being mounted in radial bearings at their ends, which are preferably designed as bearing journals, and are additionally provided with an axial bearing at one end, via which a displacement system, preferably a hydraulic pressure system, engages the roller.
  • a displacement system preferably a hydraulic pressure system
  • the object of the invention is to provide a device for the axial displacement of rollers in a stand of a rolling mill, which is free from these known disadvantages mentioned above and is particularly characterized by its very simple construction.
  • the inner bearing ring of the radial bearing which is designed as a roller bearing and is attached to the bearing journal of the roller, is axially movable relative to the outer bearing ring of the radial bearing or vice versa. Any known displacement systems can advantageously be used.
  • the inner bearing ring of the roller bearing designed as a rolling bearing according to the invention is axially movable relative to the outer bearing ring, practically no sliding friction occurs when the roller is axially displaced, since the axial movement of the inner bearing ring relative to the outer bearing ring of the roller bearing journal of the roller the bearing bodies located between the bearing rings is compensated for by their rolling movements.
  • the roller is axially displaced, there is at most a slight bearing roller friction in the radial bearings of the roller, the overcoming of which, however, hardly requires any significant axial forces.
  • the axial forces to be applied by the displacement system for the axial displacement of the roller can therefore be kept lower and lower than in the roller displacement devices known to date thereby saving energy and costs.
  • the shifting system is integrated as a hydraulic pressure system in the axial bearing, whereby a roll shifting system that is simple in construction, particularly compact and closed to the outside is presented, which is not only more easily accessible and easier to maintain than the previously known roll shifting devices, but also compared to them dynamically faster and more reliable in its functionality.
  • the hydraulic pressure system integrated in the axial bearing consists of a double-acting piston-cylinder unit, the outer bearing ring of the axial bearing being designed as a piston and the bearing housing surrounding it being designed as a cylinder.
  • the outer bearing ring designed as a piston and the bearing housing of the axial bearing designed as a cylinder are made in several parts. In this way, maintenance and replacement of the bearing or the hydraulic pressure system or parts thereof considerably relieved.
  • the radial bearings are, according to a further advantageous embodiment of the invention, with several, in rows in the axial direction at a distance bearing bodies arranged from each other. It is also particularly expedient here to use cylindrical roller bearings or radial bearings designed as needle roller bearings.
  • the drawing shows a section of a roller (1) of a rolling mill with a bearing journal (2) which is tapered in a step-like manner at the left end and is mounted in a radial bearing (3) and an axial bearing (4) shown in longitudinal section.
  • the right end of the roller (1) which is not shown in the drawing, is provided with a single-stage bearing journal which is mounted in a radial bearing which is of the same design as the radial bearing (3).
  • These radial bearings (3) consist of an inner, relatively long, attached to the bearing journal (2) trained bearing ring (5) and two outer bearing rings (7, 8) arranged in the stand (6) of the rolling mill and from the intermediate bearing bodies (9) arranged in four rows at a distance from one another.
  • This inventive design of the radial bearing (3) very advantageously allows an axial displacement (arrows 10) of the roller (1) together with the inner bearing ring (5) relative to the outer, two-part bearing ring (7, 8) without it to the undesirably disadvantageous, energy-consuming sliding friction between the bearing rings (5) and (7, 8), since the axial movement of the inner bearing ring (5) relative to the outer bearing ring (7, 8) is absorbed by the bearing bodies (9) and into one Rolling motion is converted from very little friction.
  • the radial bearings (3) are expediently designed as cylindrical roller bearings in order to be able to reliably absorb and compensate for the high loads occurring on the rollers during operation of the rolling mill.
  • other roller bearings such as needle roller bearings, barrel roller bearings, etc. in a single or multi-row arrangement can also advantageously be used as radial bearings.
  • the axial bearing (4) with integrated hydraulic bearing which is also shown in the drawing in longitudinal section and is arranged on the left-hand side and is firmly connected to the stepped bearing journal (2) Printing system provided.
  • This axial bearing (4) consists of an inner bearing ring (11) attached to the bearing journal (2), which counteracts axial displacement on the journal (2) is secured by support and retaining rings (12, 13, 14, 15), and from an outer bearing ring (16) with intermediate support rings (17) and bearing rollers (18).
  • the outer bearing roller support ring (17) is supported in the axial direction by a ring (19) with a flange which is firmly connected to the outer bearing ring (16).
  • the outer bearing ring (16) of the axial bearing (4) is provided on the outside with an annular extension (20) with a sealing ring (21) which is guided in an axially movable manner in a cylindrical recess (22) of the bearing housing (23).
  • annular disc (24) with a sealing ring (25) is attached, which seals the cylindrical recess (22) in the bearing housing (23) to the outside in a pressure-tight manner.
  • the axial displacement path of the roller (1) which in practice lies between approximately 0 and 400 mm, can be easily monitored and adjusted and / or adjusted at any time even during the rolling operation.
  • the bearing housing (23) is sealed off from the outside by an end cover (35) and there is a rubber between the roller body (1) and the roll stand (6) -elastic cuff (36) arranged.
  • the device designed according to the invention can be used not only very advantageously for the axial displacement of work rolls and backup rolls in the stand of a hot or cold rolling mill, but also in rolling mills, for. B. for crushing hard materials or the like.
  • the device according to the invention is particularly characterized by its very simple and compact, after closed, easily accessible, easy to assemble or disassemble and easy to maintain design that can be retrofitted to existing rolling mills at any time.
  • the roller displacement device according to the invention can be used very advantageously in duo, four-high, six-high and special rolling mills.
  • the measures according to the invention are not limited to the exemplary embodiment shown in the drawing figure.
  • the radial bearings can have any shape, for example a plurality of radial bearings can also lie one above the other.
  • the respective structural design is left to the person skilled in the art to adapt to the specific use.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Rolling Contact Bearings (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)

Abstract

In the hitherto known devices, the axial shifting of rolls in the stand of a rolling mill is carried out on slideways, the sliding friction resistances of the hydraulic shifting machinery arranged externally on the roll stand which occur in the slideways having to be overcome by increased energy consumption. In addition, these roll-shifting devices are of complicated structure and are hard to get at and difficult to maintain owing to the pressure and lever elements which are arranged externally on the roll stand and project a long way outwards. According to the invention, these disadvantages are eliminated in a simple way by the fact that the inner bearing ring (5), fastened to the bearing journal (2) of the roll (1), of the radial bearing (3) in the form of a roller bearing is arranged so as to be axially moveable with respect to the outer bearing ring (7, 8) of the radial bearing (3), and that the shifting system is integrated in the axial bearing (4) as a hydraulic pressure system (16, 20, 22, 23).

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum axialen Verschieben von Walzen im Gerüst eines Walzwerkes, insbesondere der Arbeitswalzen eines Warm- oder Kaltwalzwerkes, wobei die Walzen an ihren vorzugsweise als Lagerzapfen ausgebildeten Enden in Radiallagern gelagert und an einem Ende zusätzlich mit einem Axiallager versehen sind, über das ein Verschiebesystem, vorzugsweise ein hydraulisches Drucksystem an der Walze angreift.The invention relates to a device for the axial displacement of rolls in the stand of a rolling mill, in particular the work rolls of a hot or cold rolling mill, the rolls being mounted in radial bearings at their ends, which are preferably designed as bearing journals, and are additionally provided with an axial bearing at one end, via which a displacement system, preferably a hydraulic pressure system, engages the roller.

Um die im Betrieb eines Walzwerkes unerwünschten und nachteiligen Einflüsse wie Thermik, Durchbiegung der Arbeitswalzen oder des Walzensatzes, Verschleiß, Riefenbildung an den Walzenoberflächen etc. auszugleichen bzw. auszuschalten und ein optimal geformtes Walzprodukt zu erreichen, sind axiale Verschiebungen der Walzen, insbesondere der Arbeitswalzen erforderlich. Man hat daher, wie beispielsweise der DE-OS 35 21 180 zu entnehmen ist, eine Vorrichtung zum axialen Verschieben von Walzen in Walzgerüsten konzipiert, bei der die Walzen über ihre Radial- und Axiallager in besonderen Einbaustücken gehalten sind, die ihrerseits über in den Walzständern des Walzgerüstes angeordneten Gleitführungen und Schiebeschlitten gleitend geführt sind. Zum axialen Verschieben der Walzen sind an den Einbaustücken hydraulische Kolben-Zylinderaggregate angelenkt, die außen am Walzgerüst befestigt sind.In order to compensate for or eliminate the undesirable and disadvantageous influences such as thermals, deflection of the work rolls or the set of rolls, wear, scoring on the roll surfaces, etc., and to achieve an optimally shaped roll product, axial displacements of the rolls, especially the work rolls, are necessary . Therefore, as can be seen, for example, from DE-OS 35 21 180, a device for the axial displacement of rolls in roll stands has been designed, in which the rolls are held in special chocks via their radial and axial bearings, which in turn are held in the roll stands of the roll stand arranged sliding guides and sliding carriage are slidably guided. For the axial displacement of the rollers are on the chocks hydraulic piston-cylinder units articulated, which are attached to the outside of the roll stand.

Da bei dieser bekannten Vorrichtung die axiale Verschiebung der Walzen in sogenannten Gleitbahnen erfolgt, müssen aufgrund der hierbei auftretenden Gleitreibung von den hydraulischen Kolben-­Zylinderaggregaten zusätzliche und verhältnismäßig hohe Axialkräfte aufgebracht werden, was mit erhöhtem Energie- und Kostenaufwand verbunden ist. Ferner ist diese bekannte Verschiebevorrichtung von Walzen im konstruktiven Aufbau kompliziert und aufgrund der am Walzengerüst außen angeordneten und nach außen weit vorstehenden hydraulischen sowie mechanischen Verschiebeelemente schwer zugänglich und entsprechend schwierig zu warten.Since in this known device the axial displacement of the rollers takes place in so-called slideways, additional and relatively high axial forces have to be applied by the hydraulic piston-cylinder units due to the sliding friction which occurs, which is associated with increased energy and cost expenditure. Furthermore, this known shifting device of rollers is complicated in terms of its construction and is difficult to access and correspondingly difficult to maintain due to the hydraulic and mechanical shifting elements arranged on the outside of the roller stand and projecting outward to the outside.

Ferner ist aus der US-PS 4 491 005 eine Vorrichtung zum axialen Verschieben der Arbeitswalzen im Gerüst eines Walzwerkes bekannt, bei der die Walzen mit ihren Lagern über in Gleitbahnen geführten Einbaustücken axial beweglich angeordnet sind. Da beim axialen Verschieben der Walzen auch hierbei die Reibungswiderstände in den Gleitbahnen von den ebenfalls außen am Walzgerüst angeordneten hydraulischen Verschiebeaggregaten durch erhöhten Energieaufwand überwunden werden müssen, ist auch dieses bekannte Walzen-Verschiebesystem mit denselben Nachteilen behaftet, wie die aus der DE-OS 35 21 180 bekannte Walzen-Verschiebevorrichtung.Also known from US Pat. No. 4,491,005 is a device for axially displacing the work rolls in the stand of a rolling mill, in which the rolls with their bearings are arranged so as to be axially movable by means of chocks guided in slideways. Since the axial resistance of the rollers also has to overcome the frictional resistance in the slideways from the hydraulic displacement units, which are also located on the outside of the roll stand, due to increased energy expenditure, this known roller displacement system also has the same disadvantages as those from DE-OS 35 21 180 known roller shifting device.

Ausgehend von diesen bekannten Vorrichtungen besteht die Aufgabe der Erfindung darin, eine Vorrichtung zum axialen Verschieben von Walzen in einem Gerüst eines Walzwerkes zu schaffen, die frei von diesen oben angeführten bekannten Nachteilen ist und sich besonders durch ihren sehr einfachen konstruktiven Aufbau auszeichnet.Based on these known devices the object of the invention is to provide a device for the axial displacement of rollers in a stand of a rolling mill, which is free from these known disadvantages mentioned above and is particularly characterized by its very simple construction.

Diese Aufgabe wird dadurch gelöst, daß der innere am Lagerzapfen der Walze befestigte Lagerring des als Wälzlager ausgebildeten Radiallagers gegenüber dem äußeren Lagerring des Radiallagers oder umgekehrt axialbeweglich angeordnet ist. Dabei können vorteilhaft beliebige bekannte Verschiebesysteme eingesetzt werden.This object is achieved in that the inner bearing ring of the radial bearing, which is designed as a roller bearing and is attached to the bearing journal of the roller, is axially movable relative to the outer bearing ring of the radial bearing or vice versa. Any known displacement systems can advantageously be used.

Dadurch, daß der innere am Lagerzapfen der Walze befestigte Lagerring des als Wälzlager ausgebildeten Radiallagers gemäß der Erfindung gegenüber dem äußeren Lagerring axialbeweglich angeordnet ist, tritt beim axialen Verschieben der Walze praktisch keine Gleitreibung auf, da die axiale Bewegung des inneren Lagerringes gegenüber dem äußeren Lagerring von den zwischen den Lagerringen befindlichen Lagerkörpern durch ihre Abrollbewegungen kompensiert wird. Es kommt somit bei der axialen Verschiebung der Walze allenfalls zu einer geringen Lagerrollenreibung in den Radiallagern der Walze, deren Überwindung jedoch kaum nennenswerte Axialkräfte erfordern. Die vom Verschiebesystem aufzubringenden Axialkräfte zum axialen Verschieben der Walze können daher im Vergleich zu den bisher bekannten Walzenverschiebeeinrichtungen niedriger gehalten und dadurch Energie und Kosten eingespart werden.Characterized in that the inner bearing ring of the roller bearing designed as a rolling bearing according to the invention is axially movable relative to the outer bearing ring, practically no sliding friction occurs when the roller is axially displaced, since the axial movement of the inner bearing ring relative to the outer bearing ring of the roller bearing journal of the roller the bearing bodies located between the bearing rings is compensated for by their rolling movements. When the roller is axially displaced, there is at most a slight bearing roller friction in the radial bearings of the roller, the overcoming of which, however, hardly requires any significant axial forces. The axial forces to be applied by the displacement system for the axial displacement of the roller can therefore be kept lower and lower than in the roller displacement devices known to date thereby saving energy and costs.

In vorteilhafter Ausgestaltung der Erfindung ist das Verschiebesystem als hydraulisches Drucksystem im Axiallager integriert, wodurch ein im konstruktiven Aufbau einfaches, besonders kompaktes und nach außen geschlossenes Walzenverschiebesystem vorgestellt wird, das nicht nur leichter zugänglich und wartungsfreundlicher ist als die bisher bekannten Walzenverschiebevorrichtungen, sondern diesen gegenüber auch dynamisch schneller und in seiner Funktionsweise sicherer ist.In an advantageous embodiment of the invention, the shifting system is integrated as a hydraulic pressure system in the axial bearing, whereby a roll shifting system that is simple in construction, particularly compact and closed to the outside is presented, which is not only more easily accessible and easier to maintain than the previously known roll shifting devices, but also compared to them dynamically faster and more reliable in its functionality.

Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung besteht das im Axiallager integrierte hydraulische Drucksystem aus einer doppeltwirkenden Kolben-Zylindereinheit, wobei der äußere Lagerring des Axiallagers als Kolben und das ihn umgebende Lagergehäuse als Zylinder ausgebildet ist. Durch diese Ausbildung und Anordnung des hydraulischen Drucksystems im Axiallager wird in besonders einfacher Weise eine unmittelbare, direkte und nahezu reibungslose Übertragung der vom Drucksystem ausgehenden, in axialer Richtung wirkenden Druckkräfte auf die Walze erreicht.According to a further advantageous embodiment of the invention, the hydraulic pressure system integrated in the axial bearing consists of a double-acting piston-cylinder unit, the outer bearing ring of the axial bearing being designed as a piston and the bearing housing surrounding it being designed as a cylinder. Through this design and arrangement of the hydraulic pressure system in the axial bearing, a direct, direct and almost smooth transmission of the compressive forces acting in the axial direction from the pressure system to the roller is achieved in a particularly simple manner.

In weiterer Ausgestaltung der Erfindung sind der als Kolben ausgebildete äußere Lagerring und das als Zylinder ausgebildete Lagergehäuse des Axiallagers mehrteilig ausgebildet. Auf diese Weise wird die Wartung sowie das Auswechseln des Lagers oder des hydraulischen Drucksystems oder von Teilen davon erheblich erleichtert.In a further embodiment of the invention, the outer bearing ring designed as a piston and the bearing housing of the axial bearing designed as a cylinder are made in several parts. In this way, maintenance and replacement of the bearing or the hydraulic pressure system or parts thereof considerably relieved.

Um die im Betrieb des Walzwerkes von den Walzen ausgehenden, auf die Radiallager häufig mit stark schwankender Intensität wirkenden Druckbelastungen von den Radiallagern sicher und dauerhaft aufnehmen zu können, sind die Radiallager nach einer weiteren vorteilhaften Ausgestaltung der Erfindung mit mehreren, in Reihen in Achsrichtung mit Abstand voneinander angeordneten Lagerkörpern ausgestattet. Es ist hierbei auch besonders zweckmäßig als Zylinderrollenlager oder als Nadellager ausgebildete Radiallager einzusetzen.According to a further advantageous embodiment of the invention, in order to be able to safely and permanently absorb the pressure loads emanating from the rollers during operation of the rollers, which often act on the radial bearings with strongly fluctuating intensity, the radial bearings are, according to a further advantageous embodiment of the invention, with several, in rows in the axial direction at a distance bearing bodies arranged from each other. It is also particularly expedient here to use cylindrical roller bearings or radial bearings designed as needle roller bearings.

Die Vorrichtung zum axialen Verschieben von Walzen im Gerüst eines Walzwerkes gemäß der Erfindung wird nachfolgend anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispieles näher erläutert.The device for the axial displacement of rolls in the stand of a rolling mill according to the invention is explained in more detail below with reference to an embodiment shown schematically in the drawing.

Die Zeichnung zeigt ein Teilstück einer Walze (1) eines Walzwerkes mit einem am linken Ende stufenförmig verjüngt ausgebildeten Lagerzapfen (2), der in einem im Längsschnitt dargestellten Radiallager (3) und einem Axiallager (4) gelagert ist. Das in der Zeichnung nicht näher dargestellte rechte Ende der Walze (1) ist mit einem einstufig ausgebildeten Lagerzapfen versehen, der in einem ebenso ausgebildetem Radiallager gelagert ist, wie das Radiallager (3).The drawing shows a section of a roller (1) of a rolling mill with a bearing journal (2) which is tapered in a step-like manner at the left end and is mounted in a radial bearing (3) and an axial bearing (4) shown in longitudinal section. The right end of the roller (1), which is not shown in the drawing, is provided with a single-stage bearing journal which is mounted in a radial bearing which is of the same design as the radial bearing (3).

Diese Radiallager (3) bestehen aus einem inneren, am Lagerzapfen (2) befestigten, verhältnismäßig lang ausgebildeten Lagerring (5) und zwei äußeren, im Gerüst (6) des Walzwerkes angeordneten Lagerringen (7, 8) sowie aus den dazwischenliegenden, in vier Reihen mit Abstand nebeneinander angeordneten Lagerkörpern (9). Diese erfindungsgemäße Ausbildung der Radiallager (3) ermöglicht sehr vorteilhaft eine axiale Verschiebung (Pfeile 10) der Walze (1) zusammen mit dem inneren Lagerring (5) gegenüber dem äußeren, aus zwei Teilen bestehenden Lagerring (7, 8), ohne daß es dabei zu den unerwünscht nachteiligen, energieverbrauchenden Gleitreibungen zwischen den Lagerringen (5) und (7, 8) kommt, da die axiale Bewegung des inneren Lagerringes (5) gegenüber dem äußeren Lagerring (7, 8) von den Lagerkörpern (9) aufgenommen und in eine Rollbewegung von sehr geringer Reibung umgewandelt wird. Die Radiallager (3) sind hierbei zweckmäßigerweise als Zylinderrollenlager ausgebildet, um die im Betrieb des Walzwerkes an den Walzen auftretenden hohen Belastungen sicher aufnehmen und kompensieren zu können. Als Radiallager können selbstverständlich auch andere Wälzlager wie Nadellager, Tonnenlager etc. in ein- oder mehrreihiger Anordnung nebeneinander mit Vorteil eingesetzt werden.These radial bearings (3) consist of an inner, relatively long, attached to the bearing journal (2) trained bearing ring (5) and two outer bearing rings (7, 8) arranged in the stand (6) of the rolling mill and from the intermediate bearing bodies (9) arranged in four rows at a distance from one another. This inventive design of the radial bearing (3) very advantageously allows an axial displacement (arrows 10) of the roller (1) together with the inner bearing ring (5) relative to the outer, two-part bearing ring (7, 8) without it to the undesirably disadvantageous, energy-consuming sliding friction between the bearing rings (5) and (7, 8), since the axial movement of the inner bearing ring (5) relative to the outer bearing ring (7, 8) is absorbed by the bearing bodies (9) and into one Rolling motion is converted from very little friction. The radial bearings (3) are expediently designed as cylindrical roller bearings in order to be able to reliably absorb and compensate for the high loads occurring on the rollers during operation of the rolling mill. Of course, other roller bearings such as needle roller bearings, barrel roller bearings, etc. in a single or multi-row arrangement can also advantageously be used as radial bearings.

Zum axialen Verschieben der Walze (1) im Gerüst (6) des Walzwerkes ist gemäß der Erfindung das in der Zeichnung ebenfalls im Längsschnitt dargestellte, auf der linken Seite angeordnete, mit dem abgestuften Lagerzapfen (2) fest verbundene Axiallager (4) mit integriertem hydraulischen Drucksystem vorgesehen. Dieses Axiallager (4) besteht aus einem inneren, am Lagerzapfen (2) befestigten Lagerring (11), der gegen axiales Verschieben auf dem Lagerzapfen (2) durch Stütz- und Halteringe (12, 13, 14, 15) gesichert ist, sowie aus einem äußeren Lagerring (16) mit dazwischenliegenden Stützringen (17) und Lagerrollen (18). Der äußere Lagerrollenstützring (17) wird hierbei durch einen mit dem äußeren Lagerring (16) fest verbundenen Ring (19) mit Flansch in axialer Richtung abgestützt. Der äußere Lagerring (16) des Axiallagers (4) ist außen mit einem ringförmigen Fortsatz (20) mit Dichtring (21) versehen, der in einer zylinderförmigen Ausnehmung (22) des Lagergehäuses (23) axialbeweglich gleitend geführt ist. An der äußeren Stirnseite des Lagergehäuses (23), das seinerseits am Walzgerüst (6) befestigt ist, ist eine Ringscheibe (24) mit Dichtring (25) angebracht, die die zylinderförmige Ausnehmung (22) im Lagergehäuse (23) nach außen druckdicht abschließt. Der äußere Lagerring (16) mit dem ringförmigen Fortsatz (20) und das Lagergehäuse (23) mit Ringscheibe (24) bilden zusammen die doppeltwirkende Kolben-Zylindereinheit des hydraulischen Drucksystems, wobei der ringförmige Fortsatz (20) die Funktion des Kolbens und die Ausnehmung (22) im Lagergehäuse (23) die Funktion des Zylinders ausübt.For the axial displacement of the roller (1) in the stand (6) of the rolling mill, according to the invention, the axial bearing (4) with integrated hydraulic bearing, which is also shown in the drawing in longitudinal section and is arranged on the left-hand side and is firmly connected to the stepped bearing journal (2) Printing system provided. This axial bearing (4) consists of an inner bearing ring (11) attached to the bearing journal (2), which counteracts axial displacement on the journal (2) is secured by support and retaining rings (12, 13, 14, 15), and from an outer bearing ring (16) with intermediate support rings (17) and bearing rollers (18). The outer bearing roller support ring (17) is supported in the axial direction by a ring (19) with a flange which is firmly connected to the outer bearing ring (16). The outer bearing ring (16) of the axial bearing (4) is provided on the outside with an annular extension (20) with a sealing ring (21) which is guided in an axially movable manner in a cylindrical recess (22) of the bearing housing (23). On the outer end face of the bearing housing (23), which in turn is attached to the roll stand (6), an annular disc (24) with a sealing ring (25) is attached, which seals the cylindrical recess (22) in the bearing housing (23) to the outside in a pressure-tight manner. The outer bearing ring (16) with the ring-shaped extension (20) and the bearing housing (23) with the ring disk (24) together form the double-acting piston-cylinder unit of the hydraulic pressure system, the ring-shaped extension (20) functioning as the piston and the recess ( 22) in the bearing housing (23) performs the function of the cylinder.

Im Lagergehäuse (23) sind ferner für die Zufuhr des hydraulischen Druckmediums in diese doppeltwirkende Kolben-Zylindereinheit Bohrungen (26, 27) angeordnet, die zu beiden Seiten des zylinderförmigen Fortzsatzes (20) in die Ausnehmung (22) des äußeren Lagerringes (23) münden. An diese Bohrungen (26, 27) sind außen Druckleitungen (28, 29) angeschlossen, die unter Zwischenschaltung einer Schiebersteuerung (30) mit einem in der Zeichnung nicht dargestellten Pumpaggregat in Verbindung stehen und über die die hydraulisch doppelwirkende Kolben-Zylindereinheit mit Druckmedium beaufschlagt wird und die Walze (1) in axialer Richtung verschiebt. Diese in ihrer Funktionsweise an sich allgemein bekannte, elektromagnetisch arbeitende Schiebersteuerung (30) ist über elektrische Leitungen (31, 32) mit einem Weggeber (33) verbunden, der an einem am Lagergehäuse (23) angeordneten Ringdeckel (34) befestigt ist.In the bearing housing (23) for the supply of the hydraulic pressure medium in this double-acting piston-cylinder unit holes (26, 27) are arranged, which open on both sides of the cylindrical extension (20) in the recess (22) of the outer bearing ring (23) . To these holes (26, 27) pressure lines (28, 29) are connected on the outside Interposition of a slide control (30) are connected to a pump unit (not shown in the drawing) and via which the hydraulic double-acting piston-cylinder unit is pressurized with pressure medium and moves the roller (1) in the axial direction. This functionally known, electromagnetically operating slide control (30) is connected via electrical lines (31, 32) to a displacement sensor (33) which is attached to an annular cover (34) arranged on the bearing housing (23).

Mit Hilfe des Weggebers (33) kann sehr vorteilhaft der in der Praxis zwischen etwa 0 und 400 mm liegende axiale Verschiebeweg der Walze (1) leicht überwacht und jederzeit auch während des Walzbetriebes eingestellt und/oder verstellt werden. Zum Schutz der Lager, Lagerteile und des hydraulischen Drucksystems vor Staub oder sonstiger Verschmutzung ist ferner das Lagergehäuse (23) durch einen Stirndeckel (35) nach außen hin dicht abgeschlossen und zwischen dem Walzenkörper (1) und dem Walzgerüst (6) ist hierfür eine gummi-elastische Manschette (36) angeordnet.With the aid of the displacement sensor (33), the axial displacement path of the roller (1), which in practice lies between approximately 0 and 400 mm, can be easily monitored and adjusted and / or adjusted at any time even during the rolling operation. To protect the bearings, bearing parts and the hydraulic pressure system from dust or other contamination, the bearing housing (23) is sealed off from the outside by an end cover (35) and there is a rubber between the roller body (1) and the roll stand (6) -elastic cuff (36) arranged.

Im ürigen kann die erfindungsgemäß ausgebildete Vorrichtung nicht nur sehr vorteilhaft zum axialen Verschieben von Arbeitswalzen und Stützwalzen im Gerüst eines Warm- oder Kaltwalzwerkes eingesetzt werden, sondern auch bei Walzwerken z. B. zum Zerkleinern von harten Materialien oder dgl.. Die Vorrichtung gemäß der Erfindung zeichnet sich besonders durch ihre sehr einfache und kompakte, nach außen geschlossene, leicht zugängliche, leicht zu montierende oder demontierende und leicht zu wartende Bauweise aus, die jederzeit auch nachträglich bei bestehenden Walzwerken eingebaut werden kann. Darüber hinaus kann die Walzen-Verschiebeeinrichtung gemäß der Erfindung sehr vorteilhaft bei Duo-, Quarto-, Sexto- und Sonderwalzwerken eingesetzt werden.On the other hand, the device designed according to the invention can be used not only very advantageously for the axial displacement of work rolls and backup rolls in the stand of a hot or cold rolling mill, but also in rolling mills, for. B. for crushing hard materials or the like. The device according to the invention is particularly characterized by its very simple and compact, after closed, easily accessible, easy to assemble or disassemble and easy to maintain design that can be retrofitted to existing rolling mills at any time. In addition, the roller displacement device according to the invention can be used very advantageously in duo, four-high, six-high and special rolling mills.

Die erfindungsgemäßen Maßnahmen sind nicht auf das in der Zeichnungsfigur dargestellte Ausführungsbeispiel beschränkt. So können beispielsweise, ohne den Rahmen der Erfindung zu verlassen, die Radiallager beliebige Form aufweisen, beispielsweise können auch mehrere Radiallager übereinander liegen. Die jeweilige konstruktive Ausgestaltung ist in Anpassung an die spezielle Verwendung dem Fachmann anheimgestellt.The measures according to the invention are not limited to the exemplary embodiment shown in the drawing figure. For example, without departing from the scope of the invention, the radial bearings can have any shape, for example a plurality of radial bearings can also lie one above the other. The respective structural design is left to the person skilled in the art to adapt to the specific use.

Claims (6)

1. Vorrichtung zum axialen Verschieben von Walzen im Gerüst eines Walzwerkes, insbesondere der Arbeitswalzen eines Warm- oder Kaltwalzwerkes, wobei die Walzen an ihren vorzugsweise als Lagerzapfen ausgebildeten Enden in Radiallagern gelagert und an einem Ende zusätzlich mit einem Axiallager versehen sind, über das ein Verschiebesystem an der Walze angreift, dadurch gekennzeichnet, daß der innere am Lagerzapfen (2) der Walze (1) befestigte Lagerring (5) des als Wälzlager ausgebildeten Radiallagers (3) gegenüber dem äußeren Lagerring (7, 8) des Radiallagers (3) oder umgekehrt axialbeweglich angeordnet ist.1.Device for the axial displacement of rolls in the stand of a rolling mill, in particular the work rolls of a hot or cold rolling mill, the rolls being mounted in radial bearings at their ends, which are preferably designed as bearing journals, and are additionally provided at one end with an axial bearing, via which a displacement system engages the roller, characterized in that the inner bearing ring (5) of the radial bearing (3), which is designed as a roller bearing, is attached to the bearing journal (2) of the roller (1) with respect to the outer bearing ring (7, 8) of the radial bearing (3) or vice versa is axially movable. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Verschiebesystem als hydraulisches Drucksystem (16, 20, 22, 23) im Axiallager (4) integriert ist.2. Device according to claim 1, characterized in that the displacement system is integrated as a hydraulic pressure system (16, 20, 22, 23) in the axial bearing (4). 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß das im Axiallager (4) integrierte hydraulische Drucksystem (16, 20, 22, 23) aus einer doppeltwirkenden Kolben-Zylindereinheit (20, 23) besteht, wobei der äußere Lagerring (16) des Axiallagers (3) als Kolben (20) und das ihn umgebende Lagergehäuse (23) als Zylinder (22) ausgebildet ist.3. Apparatus according to claim 2, characterized in that in the axial bearing (4) integrated hydraulic pressure system (16, 20, 22, 23) consists of a double-acting piston-cylinder unit (20, 23), the outer bearing ring (16) of the Axial bearing (3) as a piston (20) and the bearing housing (23) surrounding it as a cylinder (22). 4. Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß der als Kolben (20) ausgebildete äußere Lagerring (16) und das als Zylinder (22) ausgebildete Lagergehäuse (23) des Axiallagers (4) mehrteilig ausgebildet sind.4. Apparatus according to claim 2 or 3, characterized in that the piston (20) formed outer bearing ring (16) and the cylinder (22) designed bearing housing (23) of the axial bearing (4) are formed in several parts. 5. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche 1 bis 4, insbesondere nach Anspruch 1, dadurch gekennzeichnet, daß das Radiallager (3) als Zylinderrollenlager oder Nadellager ausgebildet ist.5. The device according to one or more of the preceding claims 1 to 4, in particular according to claim 1, characterized in that the radial bearing (3) is designed as a cylindrical roller bearing or needle bearing. 6. Vorrichtung nach einem oder mehreren der vorhergehenden Ansprüche, insbesondere nach Anspruch 1 oder 5, dadurch gekennzeichnet, daß die Radiallager (3) mit mehreren, in Reihen mit Abstand voneinander angeordneten Lagerkörpern (9) ausgestattet sind.6. The device according to one or more of the preceding claims, in particular according to claim 1 or 5, characterized in that the radial bearings (3) are equipped with a plurality of bearing bodies (9) arranged in rows at a distance from one another.
EP89110436A 1988-06-25 1989-06-09 Device for axially shifting rolls in the stand of a rolling mill Expired - Lifetime EP0348711B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3821571 1988-06-25
DE3821571A DE3821571A1 (en) 1988-06-25 1988-06-25 DEVICE FOR THE AXIAL SHIFTING OF ROLLS IN THE FRAME OF A ROLLING MILL

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EP0348711A2 true EP0348711A2 (en) 1990-01-03
EP0348711A3 EP0348711A3 (en) 1991-07-17
EP0348711B1 EP0348711B1 (en) 1994-08-24

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EP (1) EP0348711B1 (en)
JP (1) JP2747029B2 (en)
AT (1) ATE110307T1 (en)
DE (2) DE3821571A1 (en)
ES (1) ES2058393T3 (en)
RU (1) RU1831388C (en)
UA (1) UA12310A (en)

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EP2737962A1 (en) * 2012-11-30 2014-06-04 Siemens S.p.A. Quick rotating shaft clamping

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EP0920925A3 (en) * 1997-12-05 1999-10-06 Sms Schloemann-Siemag Aktiengesellschaft Device for axially shifting rolls
EP2737962A1 (en) * 2012-11-30 2014-06-04 Siemens S.p.A. Quick rotating shaft clamping

Also Published As

Publication number Publication date
US4989436A (en) 1991-02-05
DE58908224D1 (en) 1994-09-29
RU1831388C (en) 1993-07-30
JPH0246904A (en) 1990-02-16
UA12310A (en) 1996-12-25
EP0348711B1 (en) 1994-08-24
ATE110307T1 (en) 1994-09-15
DE3821571A1 (en) 1989-12-28
EP0348711A3 (en) 1991-07-17
ES2058393T3 (en) 1994-11-01
JP2747029B2 (en) 1998-05-06

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