EP1541250B1 - Method for axially positioning rolls in a roll stand and roll stand - Google Patents

Method for axially positioning rolls in a roll stand and roll stand Download PDF

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Publication number
EP1541250B1
EP1541250B1 EP04017596A EP04017596A EP1541250B1 EP 1541250 B1 EP1541250 B1 EP 1541250B1 EP 04017596 A EP04017596 A EP 04017596A EP 04017596 A EP04017596 A EP 04017596A EP 1541250 B1 EP1541250 B1 EP 1541250B1
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EP
European Patent Office
Prior art keywords
rollers
rolling stand
rolling
roller
stand
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EP04017596A
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German (de)
French (fr)
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EP1541250A1 (en
Inventor
Norbert Theelen
Walter Höffgen
Walter Cox
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SMS Group GmbH
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SMS Meer GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
    • B21B13/103—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane for rolling bars, rods or wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/18—Adjusting or positioning rolls by moving rolls axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/12—Axial shifting the rolls
    • B21B2269/14—Work rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/22—Aligning on rolling axis, e.g. of roll calibers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product

Definitions

  • the invention relates to a method for the axial positioning of rolls in a rolling mill comprising at least three rolls, in particular for rolling metallic tubes or rods, wherein the rollers defining a caliber are removed from the rolling stand and reworked on a processing machine, if necessary To give rollers needed profile. Furthermore, the invention relates to a rolling stand.
  • rollers For rolling metallic tubes and rods rolling stands are known in which several rolls are included. In this case, three rolls are usually arranged around a rolling axis; the rollers form the rolling caliber. They are arranged on roll shafts and rotatably supported by bearings positioned on either side of the roll.
  • a change of the rolls may also be required in that rolling stock is to be rolled with a different cross-sectional profile.
  • One of the known ways to replace the rollers is to completely change the rolling stand.
  • a rolling stand which no longer has usable or not the right rolls, is then completely replaced by another roll stand with the corresponding rolls.
  • the remote rolling stand can be processed in a special processing station in case of wear of the rollers.
  • the reworking of the rolls takes place in the rolling stand on special caliber processing machines.
  • usually a tool with a processing steel is used, the succession all rolls of the rolling mill - usually three rolls provided - processed;
  • rollers are removed in the given case from the rolling mill and - for the purpose of reworking - outside of the rolling stand on CNC-controlled lathes reworked.
  • the rollers must be removed from the rolling stand, machined and then re-installed in the rolling stand.
  • This concept has the advantage that only a small number of rolling stands is necessary due to the roll change, which is cost-effective. Furthermore, no special caliber processing machine is necessary because the caliber shape can be freely selected via a conventional CNC processing machine.
  • a disadvantage of this method is that both process technology and equipment, a high cost is necessary to allow accurate adjustment of the rolls in the rolling mill. In this case, in particular for the actual roll change time each time the time-consuming alignment time to the total change time added. This is particularly disadvantageous with frequent roll changes due to small rolling lots.
  • the invention is therefore an object of the invention to provide a method for the axial positioning of rollers in a rolling mill and a rolling mill, with which it is possible to significantly reduce the total change time and the required axial positioning to obtain a precisely adjusted caliber also in a simpler manner cheaper to produce.
  • This object is achieved for a method according to the invention in that the actual position of the roll shafts of the rolling mill installed in the rolling mill is measured, based on the intersection of the measured roll shafts, the actual center of the caliber and the actual shaft center positions are determined and by a geometric relationship set positions for the axial Location of provided in the rolling stand for each roller, adjustable stop surfaces are formed, on which the stop surfaces are set for calibration of the mill stand.
  • Suitable for measurement are non-contact measuring methods, in particular optical measuring methods.
  • touching measuring methods in particular with a coordinate measuring system, can also be used.
  • rolling stands with a lower accuracy claim can be mechanical measuring devices, eg. As sensors, gauges or the like, use.
  • the rolling stand has a plurality of rollers which are rotatably arranged in a roll receiving to roll the rolling stock, wherein the rollers have a arranged in an axial end portion bearing surface for axial positioning of the roller in the assembled state of the roll in the roll stand at the defined stop surface in the rolling stand.
  • each roller in the rolling stand is assigned an adjustment, which are arranged in response to the measured actual positions of the roller shafts positionable on reference surfaces in the rolling stand and when resting the rollers on abutment surfaces of the adjusting elements, the desired axial positions of the rollers in the rolling mill result.
  • each adjustment element is provided individually in a roll receptacle in the roll stand.
  • the adjusting element may be formed as a plate or a ring, whose or the stop surface pretends the exact position and position after adjustment.
  • Fig. 1a three cooperating rollers 1 are shown, the caliber 9 (see. Fig. 1 b) form, is rolled with the rolling stock.
  • the processed rolls 1 are installed in a roll stand, not shown, but not yet adjusted in terms of their axial position. Consequently, the rollers 1 do not roll the desired profile, in this case a circular cylindrical profile.
  • rollers 1 were set axially so that they together due to their profile 3, the circular cylindrical caliber 9 of the rolling stock, z. B. for rolling a tube form. With this arrangement, the rollers 1, the rolling operation can be performed properly.
  • rolls 1 are worn, they are removed from the roll stand and reworked in a processing machine with respect to their profile 3.
  • processing machines are mostly CNC-controlled lathes, with which the profile 3 can be manufactured with sufficient accuracy.
  • the processing of the profile 3 is carried out according to graphic specification, so that thereafter any roll installation, possibly also in other calibrated rolling stands is possible because the rollers 1 are always positioned exactly in the rolling stand.
  • Fig. 2 is schematically indicated how a roll 1 is processed in a processing machine, not shown, wherein the profile 3 of the roll 1 here is a circular cylindrical section, however, free caliber forms come into question. It is important that in each case there is a symmetrical, central caliber, which is achieved in the processing starting from the abutment surfaces 8 of the adjusting elements 5 positioned in the rolling stand 2.
  • Fig. 3 schematically a rolling mill 2 is shown, are incorporated in the three processed rolls 1 in these associated roller mounts 6, wherein only one roller 1 is shown in dashed lines, is.
  • the profiles 3 of the rollers 1 are exactly in the required axial position, so that there is a roll configuration, as in Fig. 1 b is shown.
  • the above-described solution is thus characterized by the fact that the rolling stand 2 is subjected to a calibration by the adjusting elements 5. Since the caliber 9 must have a high precision, a calibration of the roll receiving points, on working surfaces on the roll stand, ruled out, as already inaccurate tolerances would be present due to inaccuracies in the processing machine or by temperature changes, deformations, etc. In order to exclude these tolerances, the actual dimensions of the roller mounts are used for the calibration.
  • the measurement process is carried out in the embodiment so that the roll shafts are measured in space and thus the situation is detected three-dimensionally; Alternatively, a two-dimensional survey is possible. From these positions, the axis positions are determined. By this determination, the exact desired positions of the lateral roller stop surface can then be compared with the actual position. The difference is compensated by adjusting the adjustment. Thus, the rolling mill is calibrated.
  • the roll processing takes place in such a way that the roll stop surface is taken as a reference point in the processing machine. From this point the caliber center is approached. After the rollers have been installed in the rolling stand, the rollers attach themselves to the stop surfaces, whereby the caliber is exactly aligned.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

Process for axially positioning rollers (1) in a roll stand (2) having at least three rollers comprises measuring the actual position of the roller shafts of the rollers integrated in the roll stand, determining the central point (M) of the box groove (9) and the actual shaft middle positions based on the intersection point of the measured roller shafts, and forming theoretical positions by the geometric relationship for the axial position of stopping surfaces (8) adjustable in the roll stand for each roller. An independent claim is also included for a roll stand.

Description

Die Erfindung betrifft ein Verfahren zum axialen Positionieren von Walzen in einem mindestens drei Walzen aufweisenden Walzgerüst, insbesondere zum Walzen metallischer Rohre oder Stäbe, bei dem die ein Kaliber definierenden Walzen bedarfsweise aus dem Walzgerüst entfernt und auf einer Bearbeitungsmaschine nachbearbeitet werden, um ihnen das für das Walzen benötigte Profil zu verleihen. Des weiteren betrifft die Erfindung ein Walzgerüst.The invention relates to a method for the axial positioning of rolls in a rolling mill comprising at least three rolls, in particular for rolling metallic tubes or rods, wherein the rollers defining a caliber are removed from the rolling stand and reworked on a processing machine, if necessary To give rollers needed profile. Furthermore, the invention relates to a rolling stand.

Zum Walzen metallischer Rohre und Stäbe sind Walzgerüste bekannt, in denen mehrere Walzen enthalten sind. Dabei sind in der Regel drei Walzen um eine Walzachse angeordnet; die Walzen bilden dabei das Walzkaliber. Sie sind auf Walzenwellen angeordnet und mittels beiderseits der Walze positionierter Lager drehbar gelagert.For rolling metallic tubes and rods rolling stands are known in which several rolls are included. In this case, three rolls are usually arranged around a rolling axis; the rollers form the rolling caliber. They are arranged on roll shafts and rotatably supported by bearings positioned on either side of the roll.

Im Laufe des Einsatzes der Walzen im Walzgerüst ergibt sich am Profil der Walze, das sich auf dem Walzgut abbildet, Verschleiß. Dieser führt dazu, dass die Walzen nach einer gewissen Einsatzdauer gewechselt bzw. nachgearbeitet werden müssen.In the course of the use of the rollers in the roll stand, the profile of the roll, which is reflected on the rolling stock, results in wear. This leads to the rollers having to be changed or reworked after a certain period of use.

Andererseits kann ein Wechsel der Walzen auch dadurch erforderlich werden, dass Walzgut mit einem anderen Querschnittsprofil zu walzen ist.On the other hand, a change of the rolls may also be required in that rolling stock is to be rolled with a different cross-sectional profile.

Eine der bekannten Möglichkeiten zum Austausch der Walzen besteht darin, das Walzgerüst komplett zu wechseln. Ein Walzgerüst, das nicht mehr einsatzfähige bzw. nicht die richtigen Walzen aufweist, wird danach komplett durch ein anderes Walzgerüst mit den entsprechenden Walzen ersetzt. Das entfernte Walzgerüst kann in einer speziellen Bearbeitungsstation im Falle des Verschleißes der Walzen aufbereitet werden. Die Nacharbeitung der Walzen erfolgt im Walzgerüst auf speziellen Kaliberbearbeitungsmaschinen. Hierzu kommt üblicher Weise ein Werkzeug mit einem Bearbeitungsstahl zum Einsatz, das nacheinander alle Walzen des Walzgerüsts - zumeist sind drei Walzen vorgesehen - bearbeitet; alternativ hierzu ist es auch bekannt, ein Werkzeug mit mehreren (drei) Bearbeitungsstählen einzusetzen, welches in einem Arbeitsgang alle (drei) Walzen zusammen bearbeitet. Die Walzen verbleiben dabei so lange im Walzgerüst, bis diese zur Abarbeitungsgrenze nachbearbeitet sind.One of the known ways to replace the rollers is to completely change the rolling stand. A rolling stand, which no longer has usable or not the right rolls, is then completely replaced by another roll stand with the corresponding rolls. The remote rolling stand can be processed in a special processing station in case of wear of the rollers. The reworking of the rolls takes place in the rolling stand on special caliber processing machines. For this purpose, usually a tool with a processing steel is used, the succession all rolls of the rolling mill - usually three rolls provided - processed; Alternatively, it is also known to use a tool with several (three) machining steels, which processes all (three) rollers together in one operation. The rollers remain so long in the rolling mill until they are post-processed to the processing limit.

Der Vorteil dieses Vorgehens besteht darin, dass eine sehr genaue Kaliberform eingehalten werden kann und eine schnelle Bearbeitung möglich ist. Weiterhin sind keine Umbauten am Gerüst erforderlich. Nachteilig ist indes, dass eine hohe Stückzahl an Walzgerüsten für den gesamten Abmessungsbereich des zu fertigenden Walzguts erforderlich ist und dass freie Kaliberformen nur durch spezielle CNC-Kaliberbearbeitungsmaschinen möglich sind. Dies macht das erläuterte Konzept relativ teuer.The advantage of this approach is that a very accurate caliber shape can be maintained and fast processing is possible. Furthermore, no modifications to the scaffolding are required. The disadvantage, however, is that a high number of rolling stands for the entire dimensional range of the rolling stock to be produced is required and that free caliber forms are possible only by special CNC caliber processing machines. This makes the described concept relatively expensive.

Als Alternative hierzu ist es bekannt, einen Wechsel der Walzen aus dem Walzgerüst bei Abmessungswechsel bzw. bei Walzenverschleiß vorzunehmen. Die Walzen werden im gegebenen Falle aus dem Walzgerüst entfernt und - zwecks Nacharbeitung - außerhalb des Walzgerüstes auf CNC-gesteuerten Drehmaschinen nachgearbeitet. Die Walzen müssen aus dem Walzgerüst ausgebaut, bearbeitet und dann wieder in das Walzgerüst eingebaut werden.As an alternative to this, it is known to carry out a change of the rolls from the roll stand in the case of dimensional change or in the case of roll wear. The rollers are removed in the given case from the rolling mill and - for the purpose of reworking - outside of the rolling stand on CNC-controlled lathes reworked. The rollers must be removed from the rolling stand, machined and then re-installed in the rolling stand.

Nach dem Einbau ist es notwendig, die Kaliber zu vermessen und die Walzen untereinander solange auszurichten, bis eine optimale Kaliberform durch die mehreren (drei) zusammenwirkenden Walzen erreicht ist.After installation, it is necessary to measure the calibers and align the rollers with each other until an optimal caliber shape is achieved by the several (three) cooperating rollers.

Dieses Konzept hat den Vorteil, dass durch den Walzenwechsel nur eine geringe Anzahl von Walzgerüsten notwendig ist, was kostengünstig ist. Ferner ist keine spezielle Kaliberbearbeitungsmaschine notwendig, da die Kaliberform über eine übliche CNC-Bearbeitungsmaschine frei wählbar ist.This concept has the advantage that only a small number of rolling stands is necessary due to the roll change, which is cost-effective. Furthermore, no special caliber processing machine is necessary because the caliber shape can be freely selected via a conventional CNC processing machine.

Nachteilig ist es hier aber, dass ein Walzenwechsel durchgeführt werden muss und die Notwendigkeit besteht, die Walzen nach dem Austausch präzise auszurichten, damit das Gesamtkaliber stimmt.The disadvantage here, however, that a roll change must be performed and there is a need to align the rollers after the exchange precisely, so that the total caliber is right.

Zum Einstellen der Kaliberöffnung sind im Stand der Technik Verfahren und entsprechende Vorrichtungen bekannt, die allerdings sehr aufwändig arbeiten bzw. aufgebaut sind. In der DE 198 05 602 A1 sind ein Verfahren und eine Vorrichtung zum Messen und Einstellen von Kaliberöffnungen beschrieben, die von Walzen oder Rollen gebildet sind. Dabei wird die Kaliberöffnung von Licht durchstrahlt. Die dadurch erzeugten Hell-/Dunkelgrenzen werden von einer CCD-Kamera betrachtet, digitalisiert und von einem zugeordneten Rechner dadurch ausgewertet, dass er sie als Istwerte mit eingegebenen Sollwerten vergleicht und eventuelle Abweichungen als Korrekturwerte ausgibt, die dann zum Verstellen der Walzen oder Rollen benutzt werden. Ein solches Verfahren ist auch aus dem Beitrag " Rechnergestützte Kalibereinstellungen von 3-Walzen-Gerüsten" von H. Potthoff und H. Weingartner, Stahl und Eisen 119 (1999) Nr. 3, S. 43 ff. , bekannt.For adjusting the caliber opening methods and corresponding devices are known in the prior art, however, which work very expensive or are constructed. In the DE 198 05 602 A1 For example, a method and apparatus for measuring and adjusting caliber openings formed by rollers or rollers are described. The caliber opening is irradiated by light. The light / dark limits generated thereby are viewed by a CCD camera, digitized and evaluated by an associated computer by comparing them as actual values with entered nominal values and outputting possible deviations as correction values, which are then used to adjust the rollers or rollers , Such a procedure is also apparent from the article " Computer-Assisted Caliber Settings of 3-Roll Scaffolds "by H. Potthoff and H. Weingartner, Stahl and Eisen 119 (1999) No. 3, p. 43 ff. , known.

Nachteilig bei diesem Verfahren ist, dass sowohl verfahrenstechnisch als auch apparativ ein hoher Aufwand notwendig wird, um eine genaue Einstellung der Walzen im Walzgerüst zu ermöglichen. Dabei kommt insbesondere zur eigentlichen Walzenwechselzeit jedesmal die aufwändige Ausrichtzeit zur Gesamtwechselzeit hinzu. Das ist besonders nachteilig bei häufigen Walzenwechseln aufgrund kleiner Walzlose.A disadvantage of this method is that both process technology and equipment, a high cost is necessary to allow accurate adjustment of the rolls in the rolling mill. In this case, in particular for the actual roll change time each time the time-consuming alignment time to the total change time added. This is particularly disadvantageous with frequent roll changes due to small rolling lots.

Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zum axialen Positionieren von Walzen in einem Walzgerüst und ein Walzgerüst zu schaffen, mit denen es möglich ist, die Gesamtwechselzeit wesentlich zu verringern und die benötigte axiale Positionierung zum Erhalt eines genau justierten Kalibers zudem in einfacherer Weise kostengünstiger herzustellen.The invention is therefore an object of the invention to provide a method for the axial positioning of rollers in a rolling mill and a rolling mill, with which it is possible to significantly reduce the total change time and the required axial positioning to obtain a precisely adjusted caliber also in a simpler manner cheaper to produce.

Diese Aufgabe wird für ein Verfahren erfindungsgemäß dadurch gelöst, daß die Istlage der Walzenwellen der in das Walzgerüst eingebauten Walzen gemessen wird, anhand des Schnittpunktes der vermessenen Walzenwellen der tatsächliche Mittelpunkt des Kalibers sowie die tatsächlichen Wellenmittenlagen ermittelt werden und durch eine geometrische Beziehung Sollpositionen für die axiale Lage von in dem Walzgerüst für jede Walze vorgesehenen, einstellbaren Anschlagsflächen gebildet werden, auf die die Anschlagsflächen zur Eichung des Walzgerüstes eingestellt werden.This object is achieved for a method according to the invention in that the actual position of the roll shafts of the rolling mill installed in the rolling mill is measured, based on the intersection of the measured roll shafts, the actual center of the caliber and the actual shaft center positions are determined and by a geometric relationship set positions for the axial Location of provided in the rolling stand for each roller, adjustable stop surfaces are formed, on which the stop surfaces are set for calibration of the mill stand.

Es läßt sich hiermit erreichen, daß unter Bezugnahme der tatsächlichen Lage der Walzenwellen, an die zur Vermessung, vorzugsweise im Raum, an verschiedenen Stellen Meßpunkte gelegt werden, anhand der ermittelten tatsächlichen Mitten und Achslagen der Mittelpunkt optimiert werden kann. Wenn dann die einstellbaren Anschlagsflächen auf die ermittelten Maße für die axiale Lage der Walzenwellen positioniert werden, ist das Walzgerüst geeicht, so daß in der Folge beliebige Walzensätze eingebaut werden können, da die Profile der einzelnen Walzen unter Zugrundelegung des optimierten Mittelpunktes, der durch die Einstellung der Anschlagsflächen vorgegeben ist und festliegt, nachgearbeitet bzw. bearbeitet werden können. Die Anschlagsflächen brauchen nur beim ersten Zusammenbau des Walzgerüstes, beim Wechsel der Lager oder zu Kontrollzwecken nach den Meßwerten eingestellt zu werden. Es liegt damit eine von den Walzen unabhängige Einstellung des Walzgerüstes vor, so daß die Einbaulagen für jeden folgenden Walzensatz bekannt und definiert sind. Die Einstellung wird somit nicht beim Walzenwechsel durchgeführt, sondern ist nur einmal erforderlich. Der verfahrenstechnische Aufwand ist gering und zudem ergibt sich mit dieser Vorgehensweise eine sehr präzise axiale Positionierung der Walzen im Walzgerüst.It can be achieved hereby that, with reference to the actual position of the roll shafts, to which for measurement, preferably in space, at different points measuring points can be optimized based on the determined actual centers and axial positions of the center. Then, when the adjustable abutment surfaces are positioned to the determined dimensions for the axial position of the roller shafts, the rolling stand is calibrated, so that in the sequence arbitrary sets of rollers can be installed, since the profiles of the individual rollers on the basis of the optimized center, by adjusting the stop surfaces is specified and fixed, can be reworked or edited. The abutment surfaces need to be adjusted only at the first assembly of the rolling mill, when changing the bearing or for control purposes according to the measured values. It is therefore one of the rollers independent Setting the mill before, so that the mounting positions are known and defined for each subsequent set of rollers. The adjustment is thus not performed when changing the roll, but is only required once. The procedural effort is low and also results with this approach, a very precise axial positioning of the rollers in the rolling stand.

Zur Vermessung eignen sich berührungslose Messverfahren, insbesondere optische Messverfahren. Alternativ hierzu können aber auch berührende Messverfahren, insbesondere mit einem Koordinaten-Messsystem, zum Einsatz kommen. Bei Walzgerüsten mit einem geringeren Genauigkeitsanspruch lassen sich mechanische Meßvorrichtungen, z. B. Meßfühler, -lehren oder dergleichen, einsetzen.Suitable for measurement are non-contact measuring methods, in particular optical measuring methods. Alternatively, however, touching measuring methods, in particular with a coordinate measuring system, can also be used. For rolling stands with a lower accuracy claim can be mechanical measuring devices, eg. As sensors, gauges or the like, use.

Das Walzgerüst weist mehrere Walzen auf, die drehbar in einer Walzenaufnahme angeordnet sind, um das Walzgut zu walzen, wobei die Walzen eine in einem axialen Endbereich angeordnete Anlagefläche zur axialen Positionierung der Walze aufweisen, die im montierten Zustand der Walze im Walzgerüst an der definierten Anschlagsfläche im Walzgerüst anliegt.The rolling stand has a plurality of rollers which are rotatably arranged in a roll receiving to roll the rolling stock, wherein the rollers have a arranged in an axial end portion bearing surface for axial positioning of the roller in the assembled state of the roll in the roll stand at the defined stop surface in the rolling stand.

Dieses Walzgerüst ist erfindungsgemäß dadurch gekennzeichnet, daß jeder Walze im Walzgerüst ein Einstellelement zugeordnet ist, welche in Abhängigkeit der gemessenen Istpositionen der Walzenwellen positionierbar an Referenzflächen im Walzgerüst angeordnet sind und sich bei Anlage der Walzen an Anschlagsflächen der Einstellelemente die gewünschten axialen Lagen der Walzen im Walzgerüst ergeben.This mill stand according to the invention is characterized in that each roller in the rolling stand is assigned an adjustment, which are arranged in response to the measured actual positions of the roller shafts positionable on reference surfaces in the rolling stand and when resting the rollers on abutment surfaces of the adjusting elements, the desired axial positions of the rollers in the rolling mill result.

Mit Vorteil ist vorgesehen, dass jedes Einstellelement individuell in einer Walzenaufnahme im Walzgerüst vorgesehen ist.It is advantageously provided that each adjustment element is provided individually in a roll receptacle in the roll stand.

Das Einstellelement kann als eine Platte oder ein Ring ausgebildet sein, deren bzw. dessen Anschlagsfläche nach der Einstellung die exakte Lage und Position vorgibt.The adjusting element may be formed as a plate or a ring, whose or the stop surface pretends the exact position and position after adjustment.

Für die Einstellung der Einstellelemente gibt es je nach baulicher Möglichkeit verschiedene Varianten, z. B.

  • Einstellen der Einstellelemente durch ein Gewinde, welches nach dem Einstellen festgeklemmt wird.
  • Einstellen der Einstellelemente durch Bearbeitung dieses Elementes auf das richtige Maß.
  • Einstellen der Eintstellelemente durch Beilegen oder Entfernen von Passblechen.
  • Einstellen der Einstellelemente durch Bearbeitung (Einschleifen) von hinterlegten Passblechen.
For the adjustment of the adjustment elements there are different variants depending on the structural possibility, eg. B.
  • Setting the adjusting elements by a thread, which is clamped after adjustment.
  • Adjusting the adjustment elements by machining this element to the correct size.
  • Adjusting the adjusting elements by adding or removing baffle plates.
  • Adjusting the adjustment elements by machining (grinding in) of stored alignment plates.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:

Fig. 1a
schematisch drei zusammenwirkende Walzen eines nicht dargestellten Walzgerüsts bei nicht korrekt positionierten Walzen;
Fig. 1b
die entsprechende Ansicht gemäß Fig. 1a mit korrekt positionierten Walzen;
Fig. 2
schematisch eine Walze in einer nicht dargestellten Bearbeitungsmaschine in der Seitenansicht; und
Fig. 3
schematisch ein Walzgerüst für drei Walzen in der Ansicht in Längsrichtung des Walzgutes.
In the drawing, an embodiment of the invention is shown. Show it:
Fig. 1a
schematically three cooperating rollers of a roll stand, not shown, in incorrectly positioned rollers;
Fig. 1b
the corresponding view according to Fig. 1a with correctly positioned rollers;
Fig. 2
schematically a roller in a processing machine, not shown in side view; and
Fig. 3
schematically a rolling stand for three rolls in the view in the longitudinal direction of the rolling stock.

In Fig. 1a sind drei zusammenwirkende Walzen 1 dargestellt, die ein Kaliber 9 (vgl. Fig. 1 b) bilden, mit dem Walzgut gewalzt wird. Wie der Figur zu entnehmen ist, sind die aufbereiteten Walzen 1 in ein nicht dargestelltes Walzgerüst eingebaut, jedoch noch nicht hinsichtlich ihrer axialen Position eingestellt. Folglich walzen die Walzen 1 nicht das gewünschte Profil, im vorliegenden Falle ein kreiszylindrisches Profil.In Fig. 1a three cooperating rollers 1 are shown, the caliber 9 (see. Fig. 1 b) form, is rolled with the rolling stock. As the figure can be seen, the processed rolls 1 are installed in a roll stand, not shown, but not yet adjusted in terms of their axial position. Consequently, the rollers 1 do not roll the desired profile, in this case a circular cylindrical profile.

In Fig. 1b ist zu sehen, dass hier die Walzen 1 axial so eingestellt wurden, dass sie zusammen infolge ihres Profils 3 das kreiszylindrische Kaliber 9 des Walzguts, z. B. zum Walzen eines Rohres, bilden. Mit dieser Anordnung der Walzen 1 kann der Walzvorgang ordnungsgemäß durchgeführt werden.In Fig. 1b It can be seen that here the rollers 1 were set axially so that they together due to their profile 3, the circular cylindrical caliber 9 of the rolling stock, z. B. for rolling a tube form. With this arrangement, the rollers 1, the rolling operation can be performed properly.

Sind die Walzen 1 verschlissen, werden sie aus dem Walzgerüst entfernt und in einer Bearbeitungsmaschine hinsichtlich ihres Profils 3 nachgearbeitet. Bei diesen Bearbeitungsmaschinen handelt es sich zumeist um CNC-gesteuerte Drehmaschinen, mit denen das Profil 3 hinreichend genau gefertigt werden kann.If the rolls 1 are worn, they are removed from the roll stand and reworked in a processing machine with respect to their profile 3. These processing machines are mostly CNC-controlled lathes, with which the profile 3 can be manufactured with sufficient accuracy.

Die Bearbeitung des Profils 3 wird nach zeichnerischer Vorgabe durchgeführt, so daß danach ein beliebiger Walzeneinbau, ggf. auch in anderen geeichten Walzgerüsten möglich ist, da die Walzen 1 stets exakt im Walzgerüst positioniert sind.The processing of the profile 3 is carried out according to graphic specification, so that thereafter any roll installation, possibly also in other calibrated rolling stands is possible because the rollers 1 are always positioned exactly in the rolling stand.

Zur Eichung des Walzgerüstes 2 werden Meßpunkte 10 - wie in Fig. 3 für eine Walzenwelle angedeutet - an verschiedenen Stellen bzw. Punkten der Walzenwellen gelegt, um diese gemäß Ausführungsbeispiel im Raum in X-, Y- und Z-Richtung zu vermessen und mit diesen Istlagen der Walzenwellen den tatsächlichen Mittelpunkt M des Kalibers 9 bzw. des Profils 3 der Walze 1 (vgl. Fig. 2) und die tatsächlichen Wellenmittenlagen zu ermitteln. Es ist auch möglich, nur die Schattenkanten der Wellenachsen zugrundezulegen.For calibration of the roll stand 2 measuring points 10 - as in Fig. 3 indicated for a roller shaft - placed at different points or points of the roller shafts to measure these according to embodiment in space in the X, Y and Z direction and with these actual positions of the roller shafts the actual center M of the caliber 9 and the profile 3 of the roller 1 (see. Fig. 2 ) and to determine the actual shaft center positions. It is also possible to base only on the shadow edges of the wave axes.

Aufgrund der gemessenen Daten ist es möglich, durch eine geometrische Beziehung Sollpositionen für die axiale Lage von in dem Walzgerüst 2 für jede Walze 1 vorgesehenen Einstellelementen 5 festzulegen. Die an Referenzflächen 7 des Walzgerüstes 2 angeordneten Einstellelemente 5 werden dann in eine solche Position b gebracht, daß Anschlagsflächen 8, gegen die sich die Walzen 1 mit Anlageflächen 4 anlegen, der Einstellelemente 5 eine stets exakte Einbaulage der Walzen 1 entsprechend dem genauen Mittelpunkt M gewährleisten.Based on the measured data, it is possible to set target positions for the axial position of adjusting members 5 provided in the rolling stand 2 for each roll 1 by a geometrical relationship. The arranged on reference surfaces 7 of the roll stand 2 adjusting elements 5 are then placed in such a position b that stop surfaces 8 against which create the rollers 1 with contact surfaces 4, the adjusting elements 5 always ensure an exact installation position of the rollers 1 corresponding to the exact center M. ,

In Fig. 2 ist schematisch angedeutet, wie eine Walze 1 in einer nicht weiter dargestellten Bearbeitungsmaschine bearbeitet wird, wobei das Profil 3 der Walze 1 hier ein kreiszylindrischer Abschnitt ist, gleichwohl auch freie Kaliberformen in Frage kommen. Wichtig ist, daß in jedem Fall ein symetrisches, mittiges Kaliber vorliegt, was bei der Bearbeitung ausgehend von den Anschlagsflächen 8 der im Walzgerüst 2 positionierten Einstellelemente 5 erreicht wird.In Fig. 2 is schematically indicated how a roll 1 is processed in a processing machine, not shown, wherein the profile 3 of the roll 1 here is a circular cylindrical section, however, free caliber forms come into question. It is important that in each case there is a symmetrical, central caliber, which is achieved in the processing starting from the abutment surfaces 8 of the adjusting elements 5 positioned in the rolling stand 2.

In Fig. 3 ist schematisch ein Walzgerüst 2 gezeigt, in das drei bearbeitete Walzen 1 in diesen zugeordneten Walzenaufnahmen 6 eingebaut sind, wobei nur eine Walze 1 gestrichelt dargestellt, ist. Die Profile 3 der Walzen 1 befinden sich exakt in der benötigten axialen Position, so daß sich eine Walzenkonfiguration ergibt, wie sie in Fig. 1 b dargestellt ist.In Fig. 3 schematically a rolling mill 2 is shown, are incorporated in the three processed rolls 1 in these associated roller mounts 6, wherein only one roller 1 is shown in dashed lines, is. The profiles 3 of the rollers 1 are exactly in the required axial position, so that there is a roll configuration, as in Fig. 1 b is shown.

Die vorbeschriebene Lösung zeichnet sich somit dadurch aus, dass das Walzgerüst 2 durch die Einstellelemente 5 einer Eichung unterzogen wird. Da das Kaliber 9 eine hohe Präzision haben muss, scheidet eine Eichung der Walzenaufnahmepunkte, über Bearbeitungsflächen am Walzgerüst, aus, da bereits durch Bearbeitungsungenauigkeiten in der Bearbeitungsmaschine oder durch Temperaturveränderungen, Deformationen etc. unzulässige Toleranzen vorliegen würden. Um diese Toleranzen auszuschließen, werden zur Eichung die tatsächlichen Ist-Maße der Walzenaufnahmen verwendet.The above-described solution is thus characterized by the fact that the rolling stand 2 is subjected to a calibration by the adjusting elements 5. Since the caliber 9 must have a high precision, a calibration of the roll receiving points, on working surfaces on the roll stand, ruled out, as already inaccurate tolerances would be present due to inaccuracies in the processing machine or by temperature changes, deformations, etc. In order to exclude these tolerances, the actual dimensions of the roller mounts are used for the calibration.

Der Messvorgang wird im Ausführungsbeispiel so durchgeführt, dass die Walzenwellen im Raum vermessen werden und somit die Lage dreidimensional erfasst wird; alternativ ist eine zweidimensionale Vermessung möglich. Aus diesen Positionen werden die Achslagen bestimmt. Durch diese Bestimmung können anschließend die genauen Soll-Lagen der seitlichen Walzenanschlagsfläche mit der Ist-Lage verglichen werden. Die Differenz wird durch Anpassung der Einstellelemente ausgeglichen. Somit ist das Walzgerüst geeicht.The measurement process is carried out in the embodiment so that the roll shafts are measured in space and thus the situation is detected three-dimensionally; Alternatively, a two-dimensional survey is possible. From these positions, the axis positions are determined. By this determination, the exact desired positions of the lateral roller stop surface can then be compared with the actual position. The difference is compensated by adjusting the adjustment. Thus, the rolling mill is calibrated.

Die Walzenbearbeitung erfolgt in der Weise, dass die Walzenanschlagsfläche als Referenzpunkt in der Bearbeitungsmaschine aufgenommen wird. Von diesem Punkt wird die Kalibermitte angefahren. Nach dem Einbau der Walzen in das Walzgerüst legen sich die Walzen an die Anschlagsflächen an, womit das Kaliber exakt ausgerichtet ist.The roll processing takes place in such a way that the roll stop surface is taken as a reference point in the processing machine. From this point the caliber center is approached. After the rollers have been installed in the rolling stand, the rollers attach themselves to the stop surfaces, whereby the caliber is exactly aligned.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Walzeroller
22
Walzgerüstrolling mill
33
Profil der WalzeProfile of the roller
44
seitliche axiale Anlageflächelateral axial contact surface
55
Einstellelementadjustment
66
Walzenaufnahmeroller mount
77
Referenzfläche im WalzgerüstReference surface in the rolling stand
88th
Anschlagsfläche des EinstellelementsStop surface of the adjustment
99
Kalibercaliber
1010
Meßpunktmeasuring point
XX
Achse im KoordinationssystemAxis in the coordination system
YY
Achse im KoordinationssystemAxis in the coordination system
bb
Position des EinstellelementsPosition of the adjustment element
MM
MittelpunktFocus

Claims (8)

  1. A method for the axial positioning of rollers (1) in a rolling stand (2) comprising at least three rollers, in particular for rolling metal pipes or rods, in which the rollers (1) defining a gauge (9) are removed from the rolling stand (2) as required and reworked on a machining machine to give them the profile (3) required for the rolling,
    characterised in
    that the actual position of the roller shafts of the rollers (1) incorporated in the rolling stand (2) is measured, the actual centre point (M) of the gauge (9) and the actual shaft centre positions are determined with respect to the point of intersection of the measured roller shafts, and desired positions for the axial position of adjustable stop faces (8) provided for each roller (1) in the rolling stand are formed by means of a geometrical relationship, to which positions the stop faces (8) are adjusted for calibrating the rolling stand (2).
  2. The method according to claim 1,
    characterised in
    that the rollers (1) are machined in profile starting from the stop faces (4) which abut axially against the adjusted rolling stand stop faces (8) in their mounting position and are then mounted into the rolling stand (2).
  3. The method according to claim 1 or 2,
    characterised in
    that the measurement is carried out by means of a noncontact measurement method.
  4. The method according to claim 1 or 2,
    characterised in
    that the measurement is carried out by means of a contact measurement method.
  5. The method according to claim 1 or 2,
    characterised in
    that the measurement is carried out by means of a mechanical measuring device.
  6. A rolling stand (2) in particular for a mill train for rolling metal pipes or rods, in which at least three rollers (1) forming a gauge (9) are rotatably disposed in roller receivers (6), in order to roll the workpiece, wherein the rollers (1) have a stop face (4) arranged in an axial end region for the axial positioning of the roller (1) which, in the mounted state of the roller (1) in the rolling stand (2), abuts against a defined stop face (8) in the rolling stand (2), in particular for carrying out the method according to one of claims 1 to 5,
    characterised in
    that each roller (1) in the rolling stand (2) is assigned an adjusting element (5), which are arranged positionably on reference faces (7) in the rolling stand (2) depending on the measured actual positions of the roller shafts and yield the desired axial positions of the rollers (1) in the rolling stand when the rollers (1) abut against stop faces (8) of the adjusting elements (5).
  7. The rolling stand according to claim 6,
    characterised in
    that each adjusting element (5) is provided individually in a roller receiver (6) in the rolling stand (2).
  8. The rolling stand according to claim 6 or 7,
    characterised in
    that the adjusting element (5) is configured as a plate or a ring.
EP04017596A 2003-12-10 2004-07-24 Method for axially positioning rolls in a roll stand and roll stand Active EP1541250B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10357613 2003-12-10
DE10357613A DE10357613B3 (en) 2003-12-10 2003-12-10 Process for axially positioning rollers in a roll stand having at least three rollers comprises measuring the actual position of the roller shafts of the rollers integrated in the roll stand, and further processing

Publications (2)

Publication Number Publication Date
EP1541250A1 EP1541250A1 (en) 2005-06-15
EP1541250B1 true EP1541250B1 (en) 2009-01-21

Family

ID=34485282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04017596A Active EP1541250B1 (en) 2003-12-10 2004-07-24 Method for axially positioning rolls in a roll stand and roll stand

Country Status (3)

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EP (1) EP1541250B1 (en)
AT (1) ATE421390T1 (en)
DE (2) DE10357613B3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5212768B2 (en) * 2007-01-11 2013-06-19 新日鐵住金株式会社 Method for determining reference position of rolling stand and perforated rolling roll
DE102009021260A1 (en) * 2009-05-14 2010-11-18 Sms Meer Gmbh Method for adjusting the position of a roll in a rolling mill stand of a rolling mill and system consisting of a rolling mill and a calibration stand
CN101736373B (en) * 2009-12-04 2011-04-06 北京中冶设备研究设计总院有限公司 Accurate positioning method for conductive rollers of horizontal plating bath
CN103846283B (en) * 2014-03-18 2016-04-06 中冶赛迪工程技术股份有限公司 Lamination transmission close-coupled multi-roll mill
CN107252826B (en) * 2017-06-22 2018-11-23 太原重工股份有限公司 Tandem rolling tube machine pass calibrating installation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1017270B (en) * 1974-07-18 1977-07-20 Properzi G DEVICE FOR THE REGISTRATION OF THE LAMINATION CYLINDERS IN LA MINATO FOR METAL BARS OR SI MILES
DE3122158C2 (en) * 1981-06-04 1986-12-04 Magnitogorskij Gorno-MetallurgiČeskij institut imeni G.I. Nosova, Magnitogorsk Multi-roll pass stand
JPH085343A (en) * 1994-06-16 1996-01-12 Sumitomo Metal Ind Ltd Measurement adjustment facility of roll caliber
DE19805602A1 (en) * 1998-02-12 1999-08-26 Kocks Technik Method of measuring and setting gauge openings formed by drive and/or non-driven rollers, e.g. for rolling systems for producing rolled goods
DE10316650B3 (en) * 2003-04-11 2004-10-21 Sms Meer Gmbh Roller arrangement for a mill train for rolling metal rods or pipes comprise an axially sliding hollow bolt arranged on a pulling element to secure a radial support having units depending on its axial position

Also Published As

Publication number Publication date
EP1541250A1 (en) 2005-06-15
DE502004008904D1 (en) 2009-03-12
ATE421390T1 (en) 2009-02-15
DE10357613B3 (en) 2005-06-02

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