EP0483939B1 - Alignment of horizontal rolls - Google Patents

Alignment of horizontal rolls Download PDF

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Publication number
EP0483939B1
EP0483939B1 EP91250297A EP91250297A EP0483939B1 EP 0483939 B1 EP0483939 B1 EP 0483939B1 EP 91250297 A EP91250297 A EP 91250297A EP 91250297 A EP91250297 A EP 91250297A EP 0483939 B1 EP0483939 B1 EP 0483939B1
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EP
European Patent Office
Prior art keywords
roller
upper roller
adjustment
stand
horizontal
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
Application number
EP91250297A
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German (de)
French (fr)
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EP0483939A1 (en
Inventor
Hans Sturm
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Vodafone GmbH
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Mannesmann AG
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • 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
    • B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
    • B21B38/105—Calibrating or presetting roll-gap

Definitions

  • the lower roller is first moved to the center of the roller, optical detection devices possibly determining the position of the lower roller.
  • the upper roller driven at creep speed against the lower roller is placed against the former, any inclined positions of the upper roller relative to the lower roller being detected by roller pressure differences on roller pressure load cells arranged on both sides of the upper roller.
  • the position of the top roller is corrected in accordance with this display.
  • the known method is unsuitable for the exact horizontal alignment because the position of the top roller is oriented to the position of the bottom roller and both may not be aligned horizontally if the bottom roller has not been positioned horizontally. A parallel roll nip is thereby obtained, which, however, can be inclined overall from the roll plane.
  • DE 24 54 896 A1 discloses a method for setting a parallel, open roll gap, in which forces corresponding to the adjusting drive means are applied to both roll sides.
  • the present invention is based on the object of a roll stand with roll adjustment devices for the top roller and roller adjustment devices for the bottom roller and displacement sensors for detecting the position of the roll adjustments of the top roller, the position data recorded being storable in the memory of a computer to be designed in such a way that an exact horizontal alignment of both horizontal rolls is possible with essentially available means and to find a corresponding method for carrying out this alignment and adjustment process.
  • a roll stand designed in this way enables a simple and inexpensive exact horizontal alignment of the top roll on the stop surfaces of the roll stand provided for this purpose and, via the geometrically defined points and the known dimensions of the roll stand and of the rolls, allows an exact detection of the position of the top roll.
  • the method according to the invention for aligning and adjusting the upper and lower horizontal roll to the center of the stand in a roll stand according to claim 1 is characterized by the method steps described in claim 2.
  • the present invention makes it possible to automatically align and set up the horizontal rolls of a horizontal or universal roll stand in such a way that the position of the top roll can be precisely defined via mechanical conditions and via the fixed and known position of the top roller the bottom roller can also be aligned horizontally.
  • 1 denotes the stand of a horizontal rolling stand, the top roller of which bears the position number 2a.
  • the upper roller 2a is mounted in the chock 3, which in turn is guided in the stand 1 in the horizontal direction.
  • the balancing cylinders 4 are used, of which at least two correspondingly trained ear-like projections 5 engage behind the chock.
  • stop surfaces can be seen in the stand 1, which are arranged at a precisely defined distance from the horizontal rolling center plane 7 at a distance a.
  • the connecting line between the stop faces 6 on both sides is exactly parallel to the rolling center plane 7.
  • FIG. 1 also shows the adjustment spindle for one side of the upper roller 2, which is numbered 9.
  • the adjusting spindle 9 is connected via a spherical bearing 10 to a hydraulic cylinder 11, which is cup-shaped and engages around the piston 12 formed on the extended adjusting spindle 9.
  • the hydraulic cylinder 11 or its piston 12 can be pressurized on both sides.
  • the distance of the stop surface 8 from the center 13 of the chock 3 is denoted by b; this distance is geometrically predetermined and known. Also known is the radius r of the top roller and thus the distance c in FIG. 1. This means that with a known distance a of the roller center plane to the stop surfaces 6 and with a known sum of the distances b and c in the abutting state of the contact surfaces 8 and 6 the position the top roller and its apex 14 and thus its distance (d) from the roller center plane 7 are exactly known. In addition, the exact horizontal position of the top roller is given solely by the geometric conditions when the stop surfaces 6 and 8 abut one another by the mechanical fixing of the stop surfaces 6.
  • the chocks of the top roller with 3a and 3b and the chocks of the bottom roller with 3c and 3d are mechanically precisely machined on their undersides, the dimension e being known as the distance between the contact surfaces of the lower adjusting spindles 15 on the contact surfaces 16 of the chocks 3c, 3d. With the distance f, the radius of the lower roller 2b and thus the distance from the center of the chocks 3c, 3d to the apex 14b of the lower roller is known.
  • the chock 3 in the stand 1 is raised until the stop surfaces 8 on the top of the ear-like projections 5 come to rest against the contact surfaces 6 on the stand 1.
  • a computer (not shown), the exact position of the top roller 2 relative to the stand 1 or the abutment surfaces 6 and the distance d between the apex 14 of the top roller 2 and the center plane 7 of the roller are calculated from the difference between dimension a and the sum of dimensions b and c.
  • the top roller 2 which is in an exactly horizontal position, is clamped against the balancing via the adjustment cylinders 11 of the adjustment spindles 9, and with the aid of the adjustment the top roller 2 is moved in parallel and in the direction of the center plane 7 of the roller.
  • the top roller is stopped about 2 mm before the center of the roll.
  • the lower roller 2b With the help of the lower setting 15, the lower roller 2b is now also moved in the direction of the center roll plane 7, the position of the apex 14b of the lower roller 2b being calculated from the dimensions e and f and ggis. the position of the adjusting spindle 15 is known. Since the known dimensions merely indicate the theoretical position of the apex 14b of the lower roller 2b, but do not take play and wear into account, it can be expected that the lower roller will not be stopped exactly in parallel and in the center plane 7 of the roller.

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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)
  • Crushing And Grinding (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Control Of Metal Rolling (AREA)

Description

Die Erfindung betrifft ein Walzgerüst mit Horizontalwalzen mit elektromechanischer und hydraulischer Anstellung der Oberwalze und elektromechanischer Anstellung der Unterwalze sowie Weggebern an den Hydraulikzylindern der hydraulischen Walzenanstellung und ein Verfahren zum automatischen Ausrichten und Einstellen der oberen und unteren Horizontalwalzen auf Gerüstmitte in einem Walzgerüst der vorbeschriebenen Art.The invention relates to a roll stand with horizontal rollers with electromechanical and hydraulic adjustment of the top roller and electromechanical adjustment of the bottom roller and position sensors on the hydraulic cylinders of the hydraulic roller adjustment and a method for automatically aligning and adjusting the upper and lower horizontal rollers to the center of the stand in a roll stand of the type described above.

Das Ein- und Ausrichten der Ober- und Unterwalzen von Horizontal- und Universal-Walzgerüsten wird insbesondere nach dem Wechseln der Walzen erforderlich. Dabei ist es wichtig, daß die Horizontalwalzen exakt zur Walzmitte und parallel dazu eingestellt werden. Bisher erfolgte das Einrichten entweder auf manuelle Weise und war damit - abgesehen vom Zeitaufwand - von der Geschicklichkeit der Bedienungsmannschaft abhängig oder es wurden automatische Verfahren angewendet, wie sie beispielsweise in der DE-C2-35 01 622 für ein Universal-Walzgerüst beschrieben sind.Setting up and aligning the top and bottom rolls of horizontal and universal roll stands is particularly necessary after changing the rolls. It is important that the horizontal rolls are set exactly to the middle of the roll and parallel to it. So far, the setup has either been done manually and was - apart from the time required - dependent on the skill of the operating team or automatic methods were used, as described for example in DE-C2-35 01 622 for a universal rolling stand.

Bei dem vorstehend genannten Stand der Technik wird die Unterwalze zunächst auf Walzmitte gefahren, wobei ggf. optische Erfassungseinrichtungen die Lage der Unterwalze feststellen. Die im Schleichgang gegen die Unterwalze gefahrene Oberwalze wird gegen erstere angelegt, wobei eventuelle Schrägstellungen der Oberwalze gegenüber der Unterwalze durch Walzdruckdifferenzen an beidseitig der Oberwalze angeordneten Walzdruckmeßdosen erfaßt werden. Entsprechend dieser Anzeige wird die Oberwalze in ihrer Lage korrigiert.In the prior art mentioned above, the lower roller is first moved to the center of the roller, optical detection devices possibly determining the position of the lower roller. The upper roller driven at creep speed against the lower roller is placed against the former, any inclined positions of the upper roller relative to the lower roller being detected by roller pressure differences on roller pressure load cells arranged on both sides of the upper roller. The position of the top roller is corrected in accordance with this display.

Das bekannte Verfahren ist für die exakte Horizontalausrichtung ungeeignet, weil die Lage der Oberwalze an die Lage der Unterwalze orientiert wird und beide ggf. nicht horizontal ausgerichtet sind, wenn die Unterwalze nicht horizontal positioniert worden ist. Man erhält dadurch zwar einen parallelen Walzspalt, der jedoch insgesamt aus der Walzebene geneigt sein kann.The known method is unsuitable for the exact horizontal alignment because the position of the top roller is oriented to the position of the bottom roller and both may not be aligned horizontally if the bottom roller has not been positioned horizontally. A parallel roll nip is thereby obtained, which, however, can be inclined overall from the roll plane.

Aus der DE 24 54 896 Al ist ein Verfahren zum Einstellen eines parallelen, offenen Walzspaltes bekannt, bei dem mit den Anstellantriebsmitteln auf beiden Walzenseiten übereinstimmende Kräfte aufgebracht werden.DE 24 54 896 A1 discloses a method for setting a parallel, open roll gap, in which forces corresponding to the adjusting drive means are applied to both roll sides.

Zum Ausbalancieren sind zu beiden Seiten des Ständers mit den Einbaustücken zusammenwirkende Zwischenstücke vorgesehen.Intermediate pieces that interact with the chocks are provided on both sides of the stand for balancing.

Der vorliegenden Erfindung liegt, ausgehend vom eingangs genannten Stand der Technik, die Aufgabe zugrunde, ein Walzgerüst mit Walzenanstellvorrichtungen für die Oberwalze und Walzenanstellvorrichtungen für die Unterwalze sowie Weggebern zur Erfassung der Position der Walzenanstellungen der Oberwalze, wobei die erfaßten Positionsdaten im Speicher eines Rechners ablegbar sind, so auszubilden, daß ein exaktes horizontales Ausrichten beider Horizontalwalzen mit im wesentlichen vorhandenen Mitteln möglich ist sowie ein entsprechendes Verfahren zur Durchführung dieses Ausricht- und Einstellvorganges zu finden.Starting from the prior art mentioned at the outset, the present invention is based on the object of a roll stand with roll adjustment devices for the top roller and roller adjustment devices for the bottom roller and displacement sensors for detecting the position of the roll adjustments of the top roller, the position data recorded being storable in the memory of a computer to be designed in such a way that an exact horizontal alignment of both horizontal rolls is possible with essentially available means and to find a corresponding method for carrying out this alignment and adjustment process.

Diese Aufgabe wird durch die kennzeichnenden Merkmale im Anspruch 1 und im nebengeordneten Anspruch 2 gelöst.This object is achieved by the characterizing features in claim 1 and in the independent claim 2.

Ein derartig ausgebildetes Walzgerüst ermöglicht in einfacher und günstiger Weise ein exaktes horizontales Ausrichten der Oberwalze an den dafür vorgesehenen Anschlagflächen des Walzgerüstes und gestattet über die geometrisch festgelegten Punkte und die bekannten Abmessungen des Walzgerüstes und der Walzen ein exaktes Erfassen der Lage der Oberwalze.A roll stand designed in this way enables a simple and inexpensive exact horizontal alignment of the top roll on the stop surfaces of the roll stand provided for this purpose and, via the geometrically defined points and the known dimensions of the roll stand and of the rolls, allows an exact detection of the position of the top roll.

Das erfindungsgemäße Verfahren zum Ausrichten und Einstellen der oberen und unteren Horizontalwalze auf Gerüstmitte in einem Walzgerüst nach Anspruch 1, ist durch die im Patentanspruch 2 beschriebenen Verfahrensschritte gekennzeichnet.The method according to the invention for aligning and adjusting the upper and lower horizontal roll to the center of the stand in a roll stand according to claim 1 is characterized by the method steps described in claim 2.

Insgesamt wird durch die vorliegende Erfindung, also durch das erfindungsgemäße Walzgerüst und das mit diesem durchgeführte Verfahren ein automatisches Ausrichten und Einrichten der Horizontalwalzen eines Horizontal- oder Universal-Walzgerüstes dadurch ermöglicht ist, daß über mechanische Gegebenheiten die Lage der Oberwalze exakt definierbar wird und über die festgelegte und bekannte Lage der Oberwalze die Unterwalze ebenfalls horizontal ausrichtbar wird.Overall, the present invention, that is to say, the roll stand according to the invention and the method carried out with it, make it possible to automatically align and set up the horizontal rolls of a horizontal or universal roll stand in such a way that the position of the top roll can be precisely defined via mechanical conditions and via the fixed and known position of the top roller the bottom roller can also be aligned horizontally.

Nachfolgend wird die Erfindung anhand eines Ausführungsbeispiels beschrieben. Es zeigt:

Fig. 1
in grob vereinfachter Darstellung einen Querschnitt durch ein erfindungsgemäßes Walzgerüst im Bereich der Oberwalze und
Fig. 2
einen um 90 Grad gedrehten Schnitt durch ein erfindungsgemäßes Walzgerüst.
The invention is described below using an exemplary embodiment. It shows:
Fig. 1
in a roughly simplified representation, a cross section through a roll stand according to the invention in the region of the top roll and
Fig. 2
a section rotated by 90 degrees through a roll stand according to the invention.

In Figur 1 ist mit 1 der Ständer eines Horizontalwalzgerüstes bezeichnet, dessen Oberwalze die Positionsnummer 2a trägt. Die Oberwalze 2a ist in dem Einbaustück 3 gelagert, welches seinerseits im Ständer 1 in horizontaler Richtung verschiebbar geführt ist. Zur Ausbalancierung und Verstellung des Einbaustückes 3 im Ständer 1 dienen die Ausbalancier zylinder 4, von denen mindestens zwei entsprechend ausgebildete ohrenartige Ansätze 5 des Einbaustückes hintergreifen.In FIG. 1, 1 denotes the stand of a horizontal rolling stand, the top roller of which bears the position number 2a. The upper roller 2a is mounted in the chock 3, which in turn is guided in the stand 1 in the horizontal direction. For balancing and adjusting the chock 3 in the stand 1, the balancing cylinders 4 are used, of which at least two correspondingly trained ear-like projections 5 engage behind the chock.

Bei 6 sind im Gerüst 1 erkennbar Anschlagflächen ausgearbeitet, die im exakten definierten Abstand zur horizontalen Walzmittenebene 7 im Abstand a angeordnet sind. Die Verbindungslinie zwischen den beidseitigen Anschlagflächen 6 ist exakt parallel zur Walzmittenebene 7.At 6, stop surfaces can be seen in the stand 1, which are arranged at a precisely defined distance from the horizontal rolling center plane 7 at a distance a. The connecting line between the stop faces 6 on both sides is exactly parallel to the rolling center plane 7.

An den ohrenartigen Ansätzen 5 des Einbaustückes 3 sind bei 8 eingezeichnet Gegenanschlagflächen ausgebildet, die gegen die Anschlagflächen 6 am Ständer 1 anlegbar sind, wie später noch beschrieben wird.On the ear-like projections 5 of the chock 3, counter abutment surfaces are shown at 8, which can be placed against the abutment surfaces 6 on the stand 1, as will be described later.

Aus Figur 1 ist gleichfalls die Anstellspindel für eine Seite der Oberwalze 2 ersichtlich, die mit 9 beziffert ist. Die Anstellspindel 9 ist über ein Kalottenlager 10 mit einem Hydraulikzylinder 11 verbunden, der topfförmig ausgebildet den an der verlängerten Anstellspindel 9 ausgebildeten Kolben 12 umgreift. Der Hydraulikzylinder 11 bzw. dessen Kolben 12 ist beidseitig mit Druck beaufschlagbar.FIG. 1 also shows the adjustment spindle for one side of the upper roller 2, which is numbered 9. The adjusting spindle 9 is connected via a spherical bearing 10 to a hydraulic cylinder 11, which is cup-shaped and engages around the piston 12 formed on the extended adjusting spindle 9. The hydraulic cylinder 11 or its piston 12 can be pressurized on both sides.

Der Abstand der Anschlagfläche 8 von der Mitte 13 des Einbaustückes 3 ist mit b bezeichnet; dieser Abstand ist geometrisch vorgegeben und bekannt. Ebenso bekannt ist der Radius r der Oberwalze und damit der Abstand c in Figur 1. Das bedeutet, daß bei bekanntem Abstand a der Walzenmittenebene zu den Anschlagflächen 6 und bei bekannter Summe der Abstande b und c im aneinanderliegenden Zustand der Anlageflächen 8 und 6 die Lage der Oberwalze und ihres Scheitels 14 und damit dessen Abstand (d) von der Walzenmittenebene 7 exakt bekannt sind. Außerdem ist durch die mechanische Festlegung der Anschlagflächen 6 auch die exakte Horizontallage der Oberwalze allein aus den geometrischen Bedingungen gegeben, wenn die Anschlagflächen 6 und 8 aneinanderliegen.The distance of the stop surface 8 from the center 13 of the chock 3 is denoted by b; this distance is geometrically predetermined and known. Also known is the radius r of the top roller and thus the distance c in FIG. 1. This means that with a known distance a of the roller center plane to the stop surfaces 6 and with a known sum of the distances b and c in the abutting state of the contact surfaces 8 and 6 the position the top roller and its apex 14 and thus its distance (d) from the roller center plane 7 are exactly known. In addition, the exact horizontal position of the top roller is given solely by the geometric conditions when the stop surfaces 6 and 8 abut one another by the mechanical fixing of the stop surfaces 6.

In Figur 2 sind die Einbaustücke der Oberwalze mit 3a und 3b und die Einbaustücke der Unterwalze mit 3c und 3d beziffert. Die Oberwalze in Figur 2 trägt die Positionsnummer 2a, die Unterwalze die Positionsnummer 2b. Ansonsten sind gleiche Teile gleich bezeichnet. Die Einbaustücke der Unterwalze 3c und 3d sind an ihren Unterseiten mechanisch exakt bearbeitet, wobei das Maß e als Abstand der Anlageflächen der unteren Anstellspindeln 15 an den Anlageflächen 16 der Einbaustücke 3c, 3d bekannt ist. Mit dem Abstand f ist der Radius der Unterwalze 2b und damit der Abstand von der Mitte der Einbaustücke 3c, 3d zum Scheitel 14b der Unterwalze bekannt.In Figure 2, the chocks of the top roller with 3a and 3b and the chocks of the bottom roller with 3c and 3d. The top roller in FIG. 2 bears the item number 2a, the bottom roller the item number 2b. Otherwise, the same parts are labeled the same. The chocks of the lower roller 3c and 3d are mechanically precisely machined on their undersides, the dimension e being known as the distance between the contact surfaces of the lower adjusting spindles 15 on the contact surfaces 16 of the chocks 3c, 3d. With the distance f, the radius of the lower roller 2b and thus the distance from the center of the chocks 3c, 3d to the apex 14b of the lower roller is known.

Das erfindungsgemäße Verfahren läuft wie folgt ab:The method according to the invention proceeds as follows:

Mit Hilfe der Ausbalancierzylinder 4, die die ohrenartigen Ansätze 5 des Einbaustückes 3 hintergreifen, wird das Einbaustück 3 im Ständer 1 so weit angehoben, bis die Anschlagflächen 8 an der Oberseite der ohrenartigen Ansätze 5 gegen die Anlageflächen 6 am Ständer 1 zur Anlage kommen. In einem nicht dargestellten Rechner wird aus der Differenz des Maßes a und der Summe der Maße b und c die exakte Lage der Oberwalze 2 zum Gerüst 1 bzw. den Anschlagflächen 6 und weiter der Abstand d des Scheitels 14 der Oberwalze 2 zur Walzmittenebene 7 errechnet.With the help of the balancing cylinders 4, which engage behind the ear-like projections 5 of the chock 3, the chock 3 in the stand 1 is raised until the stop surfaces 8 on the top of the ear-like projections 5 come to rest against the contact surfaces 6 on the stand 1. In a computer (not shown), the exact position of the top roller 2 relative to the stand 1 or the abutment surfaces 6 and the distance d between the apex 14 of the top roller 2 and the center plane 7 of the roller are calculated from the difference between dimension a and the sum of dimensions b and c.

Über die Anstellzylinder 11 der Anstellspindeln 9 wird die in exakter horizontal er Lage befindliche Oberwalze 2 gegen die Ausbalancierung verspannt und mit Hilfe der Anstellung wird die Oberwalze 2 im Gleichlauf parallel und in Richtung zur Walzmittenebene 7 verfahren. Etwa 2 mm vor der Walzmittenebene wird die Oberwalze angehalten.The top roller 2, which is in an exactly horizontal position, is clamped against the balancing via the adjustment cylinders 11 of the adjustment spindles 9, and with the aid of the adjustment the top roller 2 is moved in parallel and in the direction of the center plane 7 of the roller. The top roller is stopped about 2 mm before the center of the roll.

Mit Hilfe der unteren Anstellung 15 wird nun die Unterwalze 2b ebenfalls in Richtung Walzmittenebene 7 verfahren, wobei die Lage des Scheitels 14b der Unterwalze 2b rechnerisch aus den Maßen e und f und ggis. der Lage der Anstellspindel 15 bekannt ist. Da die bekannten Abmessungen lediglich die theoretische Lage des Scheitelpunktes 14b der Unterwalze 2b angeben, jedoch Spiel und Verschleiß nicht berücksichtigen, ist zu erwarten, daß die Unterwalze nicht exakt parallel und in der Walzmittenebene 7 angehalten wird.With the help of the lower setting 15, the lower roller 2b is now also moved in the direction of the center roll plane 7, the position of the apex 14b of the lower roller 2b being calculated from the dimensions e and f and ggis. the position of the adjusting spindle 15 is known. Since the known dimensions merely indicate the theoretical position of the apex 14b of the lower roller 2b, but do not take play and wear into account, it can be expected that the lower roller will not be stopped exactly in parallel and in the center plane 7 of the roller.

Nun wird die Oberwalze 2a mit Hilfe der Ausbalancierzylinder 4 auf die Unterwalze 2b zugefahren und auf dieser abgelegt. Dabei erfassen Weggeber den von den Anstellzylindern 11 zurückgelegten Weg und geben diesen in einen Rechner ein.Now the upper roller 2a is moved to the lower roller 2b with the aid of the balancing cylinders 4 and is placed thereon. In this case, position sensors record the path covered by the positioning cylinders 11 and enter this into a computer.

Aus den von den Anstellzylindern 11 zurückgelegten Wegen ergibt sich die, evtl. veränderte, Position der Oberwalze 2a und damit die tatsächle Position der Unterwalze 2b.From the paths covered by the adjusting cylinders 11, the possibly changed position of the upper roller 2a and thus the actual position of the lower roller 2b are obtained.

Unterschiedliche Abstände der Oberwalze 2a an den Anstellzylindern 11 zur Walzmittenebene 7 werden vom Rechner als Korrekturwerte an die Anstellspindeln 15 der Unterwalze 2b gegeben und damit deren Anstellposition korrigiert.
Nach dieser Korrektur werden die parallelen Walzen 2a, 2b mit Eichdruck der Oberwalze 2a genullt.Different distances between the upper roller 2a on the adjusting cylinders 11 and the center plane 7 of the roller are given by the computer as correction values to the adjusting spindles 15 of the lower roller 2b and thus their adjusting position is corrected.
After this correction, the parallel rollers 2a, 2b are zeroed with the calibration pressure of the upper roller 2a.

Claims (2)

  1. Rolling stand with roller adjustment apparatus for the upper roller (2a) and roller adjustment apparatus for the lower roller (2b) and displacement pickups for recording the position of the rolling adjustments of the upper roller, whereby the recorded data concerning positions can be stored in the memory of a computer, wherein
    abutment surfaces (6), which are set in their position in relation to the horizontal central rolling plane (7), are provided on the stand (1), abutment surfaces (8) are developed on the structural members (3) of the upper roller (2a) at a set distance from the horizontal centre of the structural member (13), it being possible to apply the said stop surfaces (8) without play, against the abutment surfaces (6) on the stand (11), in a horizontal final position by means of an upper roller (2a) which can be conveyed vertically by means of a compensating member (4), and the position of the top (14b) of the lower roller (2b) results from the sum of the radius (f) of the lower roller (26) and the separation (e) between the central plane of the lower structural member and the surfaces (16) of contact of the lower adjustment threads (15) on the lower structural member (3c, 3d) or from the position of the adjustment threads (15) in relation to the central rolling plane (7).
  2. Process for automatic alignment and adjustment of the upper (2a) and lower (2b) horizontal rollers on the central rolling plane (7) in a rolling stand in accordance with claim 1, in which displacement pickups for recording the position of the rollers in relation to the rolling stand and their positions in relation to each other and a computer are utilized for analysing the data concerning position, characterized by the following process stages:
    a) The structural members (3) of the upper roller (2a) are moved, with the aid of the compensation member (4), against the abutment surfaces (6) on the stand (1) of the rolling stand, until the stop surfaces lie against each other with no play between them.
    b) The position of the upper roller (2a) in relation the central rolling plane (7) is computed from the geometrical determination of the abutment surfaces (6) and the known radius (r) of the upper roller.
    c) The exactly horizontally aligned upper roller (2a) is held held against the compensation member (4) by means of the adjustment cylinders (11) of the hydraulic adjustment means.
    d) The upper roller (2a) moves in horizontal harmony with the central rolling plane (7) minus at least 2 mm.
    e) The lower roller (2b) is moved on the computed central plane with the aid of the adjustment threads (15).
    f) The upper roller (2a), with the aid of its compensation member (4), is placed on the lower roller (2b), whereby the distance thereby covered by each adjustment cylinder (11) is recorded with the aid of their displacement pickups and is stored in the computer.
    g) The distances covered by the adjustment cylinders (11) and the changed position of the upper roller (2a) and thereby the actual position of the lower roller (2b) are computed.
    h) Variations in the position of the upper roller (2a) in relation to the central rolling plane (7) are provided by the computer as a correction value to the adjustment threads (15) of the lower roller (2b) for correction of their adjusted positions.
    i) The parallel rollers (2a, 2b) are reset with gauge pressure of the upper roller (2a), after the correction has occurred.
EP91250297A 1990-11-02 1991-10-30 Alignment of horizontal rolls Expired - Lifetime EP0483939B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4035276A DE4035276C1 (en) 1990-11-02 1990-11-02
DE4035276 1990-11-02

Publications (2)

Publication Number Publication Date
EP0483939A1 EP0483939A1 (en) 1992-05-06
EP0483939B1 true EP0483939B1 (en) 1994-07-13

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EP91250297A Expired - Lifetime EP0483939B1 (en) 1990-11-02 1991-10-30 Alignment of horizontal rolls

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US (1) US5279139A (en)
EP (1) EP0483939B1 (en)
JP (1) JP3169405B2 (en)
KR (1) KR100222057B1 (en)
DE (2) DE4035276C1 (en)

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DE19718529A1 (en) * 1997-05-02 1998-11-12 Schloemann Siemag Ag Method for operating a rolling mill for hot and cold rolling flat products
WO1999043452A1 (en) 1998-02-27 1999-09-02 Nippon Steel Corporation Sheet rolling method and sheet rolling mill
DE19831663A1 (en) * 1998-07-15 2000-01-20 Schloemann Siemag Ag Device and method for determining and determining the center of the stand and the positions of the roll stands
KR100510719B1 (en) * 2002-02-05 2005-08-30 엘지.필립스 엘시디 주식회사 Method for manufacturing liquid crystal display device
EP1607149B9 (en) * 2003-03-20 2012-03-21 Nippon Steel Corporation Method and apparatus for rolling metallic plate material
US6983549B2 (en) * 2003-06-02 2006-01-10 Mark Vincent Loen Method to accurately measure small angular differences between surfaces
FR2877862B1 (en) * 2004-11-12 2007-02-16 Vai Clecim Soc Par Actions Sim METHOD FOR DETECTING VIBRATIONS OF A ROLLER CAGE
DE102009039501A1 (en) * 2009-08-31 2011-03-03 Sms Siemag Ag Method for adjusting the rolls of a roll stand and roll stand
CN102319739B (en) * 2011-10-19 2013-05-08 北京金自天正智能控制股份有限公司 Rolling angle adjusting device for two-roller skew rolling piercing mill
DE102015223516A1 (en) * 2015-09-23 2017-03-23 Sms Group Gmbh Roll stand, rolling mill and method for actively damping vibrations in a rolling stand
DE102019202691A1 (en) * 2019-02-28 2020-09-03 Sms Group Gmbh Roll stand for rolling metallic goods
US20240083133A1 (en) * 2022-09-14 2024-03-14 Paper Converting Machine Company Coater and Embosser-Laminator Process Roll Calibration
CN115846416B (en) * 2023-02-08 2023-05-09 厦门航天思尔特机器人系统股份公司 Roll changing adjusting device of metal rolling mill

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Also Published As

Publication number Publication date
DE59102171D1 (en) 1994-08-18
US5279139A (en) 1994-01-18
EP0483939A1 (en) 1992-05-06
DE4035276C1 (en) 1992-05-07
JPH04266412A (en) 1992-09-22
KR100222057B1 (en) 1999-10-01
JP3169405B2 (en) 2001-05-28
KR920009466A (en) 1992-06-25

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