EP0771610B1 - Apparatus for grinding rollers mounted in a roller stand - Google Patents
Apparatus for grinding rollers mounted in a roller stand Download PDFInfo
- Publication number
- EP0771610B1 EP0771610B1 EP96250234A EP96250234A EP0771610B1 EP 0771610 B1 EP0771610 B1 EP 0771610B1 EP 96250234 A EP96250234 A EP 96250234A EP 96250234 A EP96250234 A EP 96250234A EP 0771610 B1 EP0771610 B1 EP 0771610B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roll
- regrinding
- rolls
- rings
- tool holder
- 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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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/16—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged
- B24B5/167—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding peculiarly surfaces, e.g. bulged for rolls with large curvature radius, e.g. mill rolls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B28/00—Maintaining rolls or rolling equipment in effective condition
- B21B28/02—Maintaining rolls in effective condition, e.g. reconditioning
- B21B28/04—Maintaining rolls in effective condition, e.g. reconditioning while in use, e.g. polishing or grinding while the rolls are in their stands
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/363—Single-purpose machines or devices for grinding surfaces of revolution in situ
Definitions
- the invention relates to a device for regrinding in rolling stands built-in rollers, in particular those supported by support rollers Work rolls in four-hot strip mills using several over the Bale length of the roller to be ground distributed next to one another rotating grinding tools together with the one that receives them Tool carrier oscillating in a guide frame parallel to the roller axis are movably guided and can be adjusted transversely to the roller axis
- a generic device is described in DE-A-44 09 060. She serves regrinding, especially the work rolls of hot strip stands after reaching a certain wear condition u.z. when installed in the mill stand, which is an improvement over the previous one applied regrinding of the rollers when removed to external Roll grinders represents.
- the known device enables this Reworking the roller surface with great accuracy, even if that Wear pattern of the roller after rolling always the same bandwidth compared to Center of the roller has pronounced edge areas with a larger diameter.
- the previously known solution strikes the roller to turn on the grinding tools before, plunger, on which pot-shaped tools are attached, with the help of piston-cylinder units to move in the longitudinal direction and thereby the tool Taxes.
- the plungers can move into one position when changing the work roll retracted in which the grinding tools do not hinder the roll removal.
- the Drives for the grinding tools preferably electric motors, are on the Grinding tool arranged opposite end of the plunger and together with this movable.
- the tool carriers are guided rigidly on the roller stand attached guideways that extend the length of the roll bale and consist of torsion-resistant profiles. On these guideways is the Tool carrier slidably movable over ball screws, which is why it has its own drive nuts driven by hydraulic motors is provided.
- the ball screws are in Arranged inside the guideways and against grinding dust, oil, coolant and Tinder protected.
- the known solution represents a functional and stable Regrinding device for the rolls installed in the roll stand, but required the facilities provided for this require a large amount of construction work for new ones Roll stands and especially when retrofitting old stands many components to create space for the grinding device.
- the invention proposes that the Fixed the guide frame with the tool carrier on the back-up roller and is pivotable about the axis of rotation independently of the support roller.
- the So tool carrier is not, as in the known prior art on one the guide frame flanged to the roller stand, which Rather, the guide frame is arranged on the support roller itself in such a way that the support roller can rotate freely and at the same time with the guide frame the tool holder regardless of the rotational movement and the position of the Back-up roller in turn is rotatable.
- each Guide stand on two sides of the roll bale coaxial to the roll axis arranged, rotatably mounted on the supported rings relative to the roller, which can be driven synchronously rotatable about the support roller.
- they are Rings formed as roller-bearing joint rings, which the rollers in the area of Enclose bezel surfaces.
- the rings are driven according to another feature of the invention External gears on the rings, which run on motors, pinions and cardan shafts are adjustable.
- the motors can be provided in the area of the roll stands, the rings on both sides of the roller are adjusted via the pinions, which have a PTO shaft are connected synchronously rotating.
- the rings connecting guide rods run parallel to the roller axis.
- the tool carrier can be attached to these rods be moved, for what another feature of the invention Hydraulic cylinder drives are provided which are supported on the guide frame.
- At least one of the guide rods as a piston rod in the tool carrier integrated hydraulic cylinder.
- the tool carrier preferably bears as Grinding tool two cylindrical external cylindrical grinding wheels with central drive. This External cylindrical grinding wheels are covered by the hydraulic cylinder over the entire Bale length moved alternately, with the tool carrier on the guide rods or the piston rod of the integrated hydraulic cylinder slides.
- the radial delivery of the Grinding tool by pivoting the tool carrier around one of the preferably around that designed as a piston rod for the hydraulic cylinder Guide rod.
- drives are not shown here intended.
- the present invention advantageously enables the pivoting of the Tool carrier by adjusting and setting the rings relative to the backup roller in a grinding position, in an expansion position of the work rolls and in one Removal position of the support rollers.
- the invention is characterized by a compact space-saving design and is excellent in retrospectively existing rolling mills can be integrated without extensive mechanical Conversion work must be done. Maintenance of the facility for Regrinding the rollers is easy thanks to the various swiveling options and also by expanding the complete device outside of the rolling stand possible in the workshop. The expansion of the work rolls and also the backup rolls after pivoting the device according to the invention into the respective position not disabled.
- the chocks of a backup roller 2 are designated by 1a and 1b, the Roll journals 2a, 2b are accommodated in the bearings 3a, 3b.
- the support roller 2 supports the work roll 4, which is indicated in the drawing figure.
- the inventive device for regrinding the work roll 4 consists of the guide frame designated as a whole for 5 for the tool carrier 6, which on the guide rods 7 and 8 displaceable over the bale length of the support rollers 2 is stored.
- the tool carrier 6 carries the cylindrical external grinding wheels 9, which are centrally driven at 10.
- To move the tool holder 6 to the Guide rods 7 and 8 is the guide rod 8 as a piston rod Hydraulic cylinder formed, which is formed at 11 by the tool holder 6 itself becomes.
- the Tool carrier 6 operated by pressure medium alternating between the two bale ends the backup roller 2, the cylindrical grinding wheels 9 between the ends of the bale Work roll 4 moves back and forth.
- the guide frame 5 is mounted riding on the support roller 2, why hinge rings 12 enclose the bezel surfaces 13 of the support roller 2 and the Guide rods 7 and 8 of the guide frame 5 with the articulated rings 12 on both sides are connected.
- the hinge rings 12 are in turn on their outer circumference Provide teeth 14, meshing mesh with the pinion 15.
- This pinion 15 in turn sit on driven shafts, which on the one hand are driven by an Installation piece 1a mounted hydraulic motor 17 on the other hand via the propeller shaft 18th are driven.
- the shafts 16 are each in bores in the chocks 1a and 1b rotatably mounted.
- the support rollers with 2 and 3 are also here Work rolls designated 4.
- the hinge rings 12 enclose the bezel surfaces 13 on the support rollers 2 and are supported on rollers 19.
- the Tool holder 6 is shown here in the work - ie grinding position, the External grinding wheels 9 rest on the surface of the work rolls 4.
- Piston rod formed round rod 8 simultaneously represents the pivot center for the radially adjustable external cylindrical grinding wheels 9, while the Guide rod 7 is flat and with rollers 20, the abutment for the Represent tool carrier 6.
- the tool carrier 6 together with the entire guide frame can be pivoted into a position, which in FIG is designated. In this position, the expansion of the work rolls is not hindered; the tool holder 6 is pivoted in a simple manner Actuation of the hydraulic motors 17 and rotation of the joint rings 12 via the Toothings 15, 14 until the desired position is reached.
- the tool carrier 6 with the guide frame also pivoted into the position by acting on the hydraulic motor 17 is designated by 22 in FIG.
- the back-up rolls can be put together with the guide frame mounted on it in a conventional manner from the rolling stand be expanded without the need for complex disassembly of the invention Device would be required.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Nachschleifen der in Walzgerüsten eingebauten Walzen, insbesondere der mittels Stützwalzen abgestützten Arbeitswalzen in Quarto-Warmbandwalzgerüsten mittels mehrerer über die Ballenlänge der zu schleifenden Walze verteilt nebeneinander angeordneter rotierender Schleifwerkzeuge, die zusammen mit dem sie aufnehmenden Werkzeugträger in einem Führungsgerüst parallel zur Walzenachse oszillierend bewegbar geführt und quer zur Walzenachse anstellbar sindThe invention relates to a device for regrinding in rolling stands built-in rollers, in particular those supported by support rollers Work rolls in four-hot strip mills using several over the Bale length of the roller to be ground distributed next to one another rotating grinding tools together with the one that receives them Tool carrier oscillating in a guide frame parallel to the roller axis are movably guided and can be adjusted transversely to the roller axis
Eine gattungsgemäße Vorrichtung ist in der DE-A-44 09 060 beschrieben. Sie dient dem Nachschleifen, insbesondere der Arbeitswalzen von Warmbandwalzgerüsten nach Erreichen eines bestimmten Verschleißzustandes u.z. im eingebauten Zustand im Walzgerüst, was eine Verbesserung gegenüber dem bislang überwiegend angewendeten Nachschleifen der Walzen im ausgebauten Zustand auf externen Walzenschleifmaschinen darstellt. Die bekannte Vorrichtung ermöglicht das Nacharbeiten der Walzenoberfläche mit großer Genauigkeit, selbst wenn das Verschleißbild der Walze nach dem Walzen stets gleicher Bandbreiten gegenüber der Walzenmitte ausgeprägte Randbereiche mit größerem Durchmesser aufweist.A generic device is described in DE-A-44 09 060. she serves regrinding, especially the work rolls of hot strip stands after reaching a certain wear condition u.z. when installed in the mill stand, which is an improvement over the previous one applied regrinding of the rollers when removed to external Roll grinders represents. The known device enables this Reworking the roller surface with great accuracy, even if that Wear pattern of the roller after rolling always the same bandwidth compared to Center of the roller has pronounced edge areas with a larger diameter.
Die vorbekannte Lösung schlägt zum Anstellen der Schleifwerkzeuge gegen die Walze vor, Stößel, an denen topfförmige Werkzeuge befestigt sind, mit Hilfe von Kolben-Zylinder-Einheiten in Längsrichtung zu verschieben und dadurch das Werkzeug zu steuern. Die Stößel können beim Arbeitswalzenwechsel in eine Position zurückgefahren, in der die Schleifwerkzeuge den Walzenausbau nicht behindern. Die Antriebe für die Schleifwerkzeuge, vorzugsweise Elektromotoren, sind jeweils am dem Schleifwerkzeug entgegengesetzten Ende des Stößels angeordnet und zusammen mit diesem bewegbar. Die Führung der Werkzeugträger erfolgt an starr am Walzenständer befestigten Führungsbahnen, die sich über die Länge des Walzballens erstrecken und aus verwindungssteifen Profilen bestehen. An diesen Führungsbahnen ist der Werkzeugträger über Kugelspindeln gleitend bewegbar, wozu ein eigener Antrieb über von Hydromotoren getriebene Muttern vorgesehen ist. Die Kugelspindeln sind im Inneren der Führungsbahnen angeordnet und vor Schleifstaub, Öl, Kühlflüssigkeit und Zunder geschützt.The previously known solution strikes the roller to turn on the grinding tools before, plunger, on which pot-shaped tools are attached, with the help of piston-cylinder units to move in the longitudinal direction and thereby the tool Taxes. The plungers can move into one position when changing the work roll retracted in which the grinding tools do not hinder the roll removal. The Drives for the grinding tools, preferably electric motors, are on the Grinding tool arranged opposite end of the plunger and together with this movable. The tool carriers are guided rigidly on the roller stand attached guideways that extend the length of the roll bale and consist of torsion-resistant profiles. On these guideways is the Tool carrier slidably movable over ball screws, which is why it has its own drive nuts driven by hydraulic motors is provided. The ball screws are in Arranged inside the guideways and against grinding dust, oil, coolant and Tinder protected.
Die bekannte Lösung stellt zwar eine funktionsfähige und stabile Nachschleifvorrichtung für die im Walzgerüst eingebauten Walzen dar, doch erfordern die dazu vorgesehenen Einrichtungen einen großen Bauaufwand bei neuen Walzgerüsten und insbesondere bei der Nachrüstung alter Gerüste den Austausch vieler Komponenten, um den Freiraum für die Schleifvorrichtung zu schaffen.The known solution represents a functional and stable Regrinding device for the rolls installed in the roll stand, but required the facilities provided for this require a large amount of construction work for new ones Roll stands and especially when retrofitting old stands many components to create space for the grinding device.
Ausgehend von der bekannten Lösung und den dazu beschriebenen Nachteilen ist es Aufgabe der vorliegenden Erfindung, eine Vorrichtung der gattungsgemäßen Art zu schaffen, die mit geringerem Bauaufwand auch die Nachrüstung alter Walzgerüste ohne größere mechanische Änderungen erlaubt und den Ein- und Ausbau der Arbeits-und/oder Stützwalzen nicht behindert.Based on the known solution and the disadvantages described for it, it is Object of the present invention to a device of the generic type create, with less construction work, the retrofitting of old rolling stands allowed without major mechanical changes and the installation and removal of labor and / or Back-up rolls not hindered.
Zur Lösung der Aufgabe wird erfindungsgemäß vorgeschlagen, daß das Führungsgerüst mit dem Werkzeugträger auf der Stützwalze reitend festigt und unabhängig von der Stützwalze um deren Drehachse schwenkbar ist. Der Werkzeugträger wird also nicht, wie beim bekannten Stand der Technik auf einem bauaufwendig am Walzenständer angeflanschten Führungsgerüst bewegt, das Führungsgerüst wird vielmehr an der Stützwalze selbst angeordnet und zwar derartig, daß die Stützwalze ungehindert drehen kann und gleichzeitig das Führungsgerüst mit dem Werkzeugträger unabhängig von der Drehbewegung und der Position der Stützwalze seinerseits verdrehbar ist.To solve the problem, the invention proposes that the Fixed the guide frame with the tool carrier on the back-up roller and is pivotable about the axis of rotation independently of the support roller. The So tool carrier is not, as in the known prior art on one the guide frame flanged to the roller stand, which Rather, the guide frame is arranged on the support roller itself in such a way that the support roller can rotate freely and at the same time with the guide frame the tool holder regardless of the rotational movement and the position of the Back-up roller in turn is rotatable.
In einer günstigen Ausgestaltung der Erfindung ist vorgesehen, daß jedes Führungsgerüst an zwei beidseitig des Walzballens koaxial zur Walzenachse angeordneten, relativ zur Walze drehbar auf dieser abgestützten Ringen befestigt ist, die synchron um die Stützwalze verdrehbar antreibbar sind. Günstigerweise sind die Ringe als rollengelagerte Gelenkringe ausgebildet, die die Walzen im Bereich der Lünettenflächen umschließen.In a favorable embodiment of the invention it is provided that each Guide stand on two sides of the roll bale coaxial to the roll axis arranged, rotatably mounted on the supported rings relative to the roller, which can be driven synchronously rotatable about the support roller. Conveniently they are Rings formed as roller-bearing joint rings, which the rollers in the area of Enclose bezel surfaces.
Die vorgeschlagene Lagerung des Führungsgerüstes an den Walzen ermöglicht bei ungehinderter Drehung der Stützwalzen eine raumsparende und funktionssichere Abstützung des Führungsgerüstes, ohne den bei nachzurüstenden Walzgerüsten durch andere mechanische Einrichtungen belegten Raum zu benötigen. Gerade die Lünettenflächen bieten eine sehr exakte und günstige Abstützung und Führung, für die das Führungsgerüst tragenden Ringe, die im Fall von rollengelagerten Gelenkringen durch Öffnen dieser Ringe leicht zu montieren sind.The proposed mounting of the guide frame on the rollers enables unrestricted rotation of the support rollers a space-saving and reliable Support of the guide stand without that of the roll stands to be retrofitted need space occupied by other mechanical devices. Just that Bezel surfaces offer very precise and inexpensive support and guidance for the the guide frame bearing rings, which in the case of roller-bearing joint rings are easy to assemble by opening these rings.
Der Antrieb der Ringe erfolgt nach einem anderen Merkmal der Erfindung über Außenverzahnungen an den Ringen, die über Motoren, Ritzel und Gelenkwellen verstellbar sind. Die Motoren können im Bereich der Walzenständer vorgesehen sein, wobei die Ringe beider Walzenseiten über die Ritzel verstellt werden, die mit einer Gelenkwelle synchron drehend verbunden sind.The rings are driven according to another feature of the invention External gears on the rings, which run on motors, pinions and cardan shafts are adjustable. The motors can be provided in the area of the roll stands, the rings on both sides of the roller are adjusted via the pinions, which have a PTO shaft are connected synchronously rotating.
Zur Führung der Werkzeugträger am Führungsgerüst sind nach einem anderen Merkmal der Erfindung die Ringe verbindende Führungsstangen vorgesehen, die parallel zur Walzenachse verlaufen. An diesen Stangen kann der Werkzeugträger verschoben werden, wozu nach einem anderen Merkmal der Erfindung Hydrozylinderantriebe vorgesehen sind, die sich am Führungsgerüst abstützen.To guide the tool carriers on the guide frame are after another Feature of the invention provided the rings connecting guide rods run parallel to the roller axis. The tool carrier can be attached to these rods be moved, for what another feature of the invention Hydraulic cylinder drives are provided which are supported on the guide frame.
In einer besonders günstigen Ausgestaltung der Erfindung ist vorgesehen, daß mindestens eine der Führungsstangen als Kolbenstange des in den Werkzeugträger integrierten Hydrozylinders ausgeführt ist. Diese Lösung ist besonders platzsparend, weil der Werkzeugträger selbst ein Teil des Verschiebeantriebes ist, an dem die Schleifwerkzeuge befestigt sind. Vorzugsweise trägt der Werkzeugträger als Schleifwerkzeug zwei zylindrische Außenrundschleifscheiben mit Zentralantrieb. Diese Außenrundschleifscheiben werden durch den Hydrozylinder über die gesamte Ballenlänge alternierend bewegt, wobei der Werkzeugträger an den Führungsstangen bzw. der Kolbenstange des integrierten Hydrozylinders gleitet.In a particularly favorable embodiment of the invention it is provided that at least one of the guide rods as a piston rod in the tool carrier integrated hydraulic cylinder. This solution is particularly space-saving, because the tool holder itself is part of the slide drive on which the Grinding tools are attached. The tool carrier preferably bears as Grinding tool two cylindrical external cylindrical grinding wheels with central drive. This External cylindrical grinding wheels are covered by the hydraulic cylinder over the entire Bale length moved alternately, with the tool carrier on the guide rods or the piston rod of the integrated hydraulic cylinder slides.
Nach einem anderen Merkmal der Erfindung erfolgt die Radialzustellung des Schleifwerkzeuges durch Verschwenken des Werkzeugträgers um eine der, vorzugsweise um die als Kolbenstange für den Hydrozylinder ausgeführte Führungsstange. Zur Radialverschwenkung selbst sind hier nicht dargestellte Antriebe vorgesehen.According to another feature of the invention, the radial delivery of the Grinding tool by pivoting the tool carrier around one of the preferably around that designed as a piston rod for the hydraulic cylinder Guide rod. For radial pivoting itself, drives are not shown here intended.
Die vorliegende Erfindung ermöglicht in vorteilhafter Weise die Verschwenkung der Werkzeugträger durch Verstellen und Festlegen der Ringe relativ zur Stützwalze in eine Schleifposition, in eine Ausbauposition der Arbeitswalzen und in eine Ausbauposition der Stützwalzen. Die Erfindung zeichnet sich durch eine kompakte raumsparende Bauweise aus und ist in hervorragender Weise nachträglich in bestehende Walzwerke integrierbar, ohne daß umfangreiche mechanische Umbauarbeiten vorgenommen werden müssen. Die Wartung der Einrichtung zum Nachschleifen der Walzen ist durch die verschiedenen Schwenkmöglichkeiten einfach und durch den Ausbau der kompletten Vorrichtung auch außerhalb des Walzgerüstes in der Werkstatt möglich. Der Ausbau der Arbeitswalzen und auch der Stützwalzen wird nach Verschwenken der erfindungsgemäßen Vorrichtung in die jeweilige Position nicht behindert.The present invention advantageously enables the pivoting of the Tool carrier by adjusting and setting the rings relative to the backup roller in a grinding position, in an expansion position of the work rolls and in one Removal position of the support rollers. The invention is characterized by a compact space-saving design and is excellent in retrospectively existing rolling mills can be integrated without extensive mechanical Conversion work must be done. Maintenance of the facility for Regrinding the rollers is easy thanks to the various swiveling options and also by expanding the complete device outside of the rolling stand possible in the workshop. The expansion of the work rolls and also the backup rolls after pivoting the device according to the invention into the respective position not disabled.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschrieben.An embodiment of the invention is shown in the drawing and will described below.
Es zeigt:
In Figur 1 sind mit 1a und 1b die Einbaustücke einer Stützwalze 2 bezeichnet, deren
Walzenzapfen 2a, 2b in den Lagern 3a, 3b aufgenommen sind. Die Stützwalze 2 stützt
die Arbeitswalze 4 ab, die in der Zeichnungsfigur angedeutet ist. Die
erfindungsgemäße Vorrichtung zum Nachschleifen der Arbeitswalze 4 besteht aus
dem insgesamt mit 5 bezeichneten Führungsgerüst für den Werkzeugträger 6, der auf
den Führungsstangen 7 und 8 über die Ballenlänge der Stützwalzen 2 verschiebbar
gelagert ist. Der Werkzeugträger 6 trägt die zylindrischen Außenrundschleifscheiben 9,
die bei 10 zentral angetrieben sind. Zum Verschieben des Werkzeugträgers 6 an den
Führungsstangen 7 und 8 ist die Führungsstange 8 als Kolbenstange eines
Hydrozylinders ausgebildet, der bei 11 durch den Werkzeugträger 6 selbst gebildet
wird. Durch Beaufschlagung des Zylinderraums in dem Hydrozylinder 11 werden der
Werkzeugträger 6 druckmittelbetrieben alternierend zwischen den beiden Ballenenden
der Stützwalze 2, die Rundschleifscheiben 9 zwischen den Ballenenden der
Arbeitswalze 4 hin und her bewegt.In Figure 1, the chocks of a
Erfindungsgemäß ist das Führungsgerüst 5 auf der Stützwalze 2 reitend befestigt,
wozu Gelenkringe 12 die Lünettenflächen 13 der Stützwalze 2 umschließen und die
Führungsstangen 7 und 8 des Führungsgerüstes 5 mit den Gelenkringen 12 beidseitig
verbunden sind. Die Gelenkringe 12 ihrerseits sind an ihrem Außenumfang mit
Verzahnungen 14 versehen, in die Zahnritzel 15 kämmend eingreifen. Diese Zahnritzel
15 ihrerseits sitzen auf angetriebenen Wellen, die einerseits von einem am
Einbaustück 1a gelagerten Hydromotor 17 andererseits über die Gelenkwelle 18
angetrieben sind. Die Wellen 16 sind jeweils in Bohrungen in den Einbaustücken 1a
und 1b drehbar gelagert.According to the invention, the guide frame 5 is mounted riding on the
Wie in Figur 2 im Querschnitt erkennbar, sind auch hier die Stützwalzen mit 2 und die
Arbeitswalzen mit 4 bezeichnet. Die Gelenkringe 12 umschließen die Lünettenflächen
13 an den Stützwalzen 2 und sind dabei über Rollen 19 abgestützt. Der
Werkzeugträger 6 ist hier in der Arbeit - also Schleifposition dargestellt, wobei die
Außenrundschleifscheiben 9 an der Oberfläche der Arbeitswalzen 4 anliegen. Die als
Kolbenstange ausgebildete Rundstange 8 stellt gleichzeitig den Schwenkmittelpunkt
für die radial anstellbaren Außenrundschleifscheiben 9 dar, während die
Führungsstange 7 flach ausgebildet ist und mit Rollen 20 das Widerlager für den
Werkzeugträger 6 darstellen.As can be seen in cross-section in FIG. 2, the support rollers with 2 and 3 are also here
Work rolls designated 4. The
Zum Ausbau der Arbeitswalzen kann der Werkzeugträger 6 zusammen mit dem
gesamten Führungsgerüst in eine Position geschwenkt werden, die in Figur 3 mit 21
bezeichnet ist. In dieser Position wird der Ausbau der Arbeitswalzen nicht behindert;
das Verschwenken des Werkzeugträgers 6 erfolgt in einfacher Weise durch
Beaufschlagung der Hydromotoren 17 und Drehen der Gelenkringe 12 über die
Verzahnungen 15, 14, bis die gewünschte Position erreicht ist.To remove the work rolls, the
Zum Ausbau der Stützwalzen wird der Werkzeugträger 6 mit dem Führungsgerüst
ebenfalls durch Beaufschlagung des Hydromotors 17 in die Position verschwenkt, die
in Figur 3 mit 22 bezeichnet ist. In dieser Stellung können die Stützwalzen zusammen
mit dem aufsitzenden Führungsgerüst in konventioneller Weise aus dem Walzgerüst
ausgebaut werden, ohne daß ein aufwendiges Demontieren der erfindungsgemäßen
Vorrichtung erforderlich wäre.To remove the support rollers, the
Claims (10)
- A device for regrinding the rolls (4) installed in roll stands, in particular the work rolls (4) supported by means of back-up rolls (2) in four-high hot strip roll stands, by means of a plurality of rotating grinding tools (9) arranged next to one another and distributed over the length of the barrel of the roll (4) to be ground, which grinding tools (9) may be guided in a guide frame (5) in such a manner as to be oscillatingly movable in parallel with the roll axis together with the tool holder (6) accommodating them and may be adjusted perpendicularly to the roll axis,
characterised in that
the guide frame (5) with the tool holder (6) is attached astride the back-up roll (2) and may be swivelled independently of the back-up roll (2) about the axis of rotation thereof. - A device for regrinding the rolls installed in roll stands according to claim 1,
characterised in that
the guide frame (5) is attached to two rings (12) arranged on each side of the roll barrel coaxially with the roll axis and supported on the back-up roll (2) in such a way as to be rotatable relative thereto, which rings (12) may be driven so as to rotate synchronously about the back-up roll (2). - A device for regrinding the rolls installed in roll stands according to claim 1 and claim 2,
characterised in that
the rings (12) take the form of roller-mounted articulated rings and surround the rolls in the area of the steady rest surfaces (13). - A device for regrinding the rolls installed in roll stands according to claims 1 to 3,
characterised in that
the rings (12) are externally toothed (14) and may be adjusted by means of motors (17), pinions (15) and cardan shafts (18). - A device for regrinding the rolls installed in roll stands according to claims 1 to 4,
characterised in that,
to guide the tool holder (6), the guide frame (5) comprises guide bars (7, 8) extending in parallel with the roll axis and connecting the rings (12). - A device for regrinding the rolls installed in roll stands according to claims 1 to 5,
characterised in that,
for parallel displacement of the tool holder (6) relative to the roll axis, hydraulic cylinder drives (11) are provided which are supported on the guide frame (5). - A device for regrinding the rolls installed in roll stands according to claims 5 and 6,
characterised in that
at least one of the guide bars (8) takes the form of a piston rod of the hydraulic cylinder (11) incorporated into the tool holder. - A device for regrinding the rolls installed in roll stands according to claims 1 to 7,
characterised in that
the tool holder (6) carries as grinding tool two cylindrical external cylindrical grinding wheels (9) with central drive (10). - A device for regrinding the rolls installed in roll stands according to claims 1 to 8,
characterised in that
the radial feed motion of the grinding tool is effected by swivelling of the tool holder (6) about one of the guide bars (8). - A device for regrinding the rolls installed in roll stands according to claims 1 to 9,
characterised in that
the tool holder (6) may be swivelled, by adjustment and fixing of the rings (12) relative to the back-up roll (2), into a grinding position, into a work roll removal position and into a back-up roll (2) removal position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19542387A DE19542387C1 (en) | 1995-11-01 | 1995-11-01 | Device for regrinding the rolls installed in roll stands |
| DE19542387 | 1995-11-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0771610A1 EP0771610A1 (en) | 1997-05-07 |
| EP0771610B1 true EP0771610B1 (en) | 2000-01-05 |
Family
ID=7777408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96250234A Expired - Lifetime EP0771610B1 (en) | 1995-11-01 | 1996-10-18 | Apparatus for grinding rollers mounted in a roller stand |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0771610B1 (en) |
| DE (2) | DE19542387C1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009003140A1 (en) * | 2009-05-15 | 2010-11-18 | Voith Patent Gmbh | Grinding device for rolls |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2150781A1 (en) * | 1971-10-12 | 1973-04-19 | Schloemann Ag | ADJUSTMENT DEVICE FOR A ROTATING ROLLER BRUSH |
| DE4105079A1 (en) * | 1990-03-26 | 1991-10-02 | Schloemann Siemag Ag | Grinding device for maintaining roll at predetermined contour - with grinding disc on support which allows radial and parallel movement with respect to work roll |
| DE4409060C3 (en) * | 1994-03-11 | 2000-08-03 | Mannesmann Ag | Device for regrinding built-in rollers |
-
1995
- 1995-11-01 DE DE19542387A patent/DE19542387C1/en not_active Expired - Fee Related
-
1996
- 1996-10-18 EP EP96250234A patent/EP0771610B1/en not_active Expired - Lifetime
- 1996-10-18 DE DE59604104T patent/DE59604104D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0771610A1 (en) | 1997-05-07 |
| DE59604104D1 (en) | 2000-02-10 |
| DE19542387C1 (en) | 1997-06-19 |
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