EP1453620A1 - Device for measuring the roll gap between the working rollers of a cold or warm rolling stand - Google Patents

Device for measuring the roll gap between the working rollers of a cold or warm rolling stand

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Publication number
EP1453620A1
EP1453620A1 EP02787736A EP02787736A EP1453620A1 EP 1453620 A1 EP1453620 A1 EP 1453620A1 EP 02787736 A EP02787736 A EP 02787736A EP 02787736 A EP02787736 A EP 02787736A EP 1453620 A1 EP1453620 A1 EP 1453620A1
Authority
EP
European Patent Office
Prior art keywords
roll gap
bending
roll
cylinder
measuring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02787736A
Other languages
German (de)
French (fr)
Other versions
EP1453620B1 (en
Inventor
Dirk TÄUBER
Dieter Daub
Hartmut Pawelski
Josef Zeppenfeld
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Group GmbH
Original Assignee
SMS Demag AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority claimed from DE10202526.6A external-priority patent/DE10202526B4/en
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1453620A1 publication Critical patent/EP1453620A1/en
Application granted granted Critical
Publication of EP1453620B1 publication Critical patent/EP1453620B1/en
Anticipated expiration legal-status Critical
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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B29/00—Counter-pressure devices acting on rolls to inhibit deflection of same under load, e.g. backing rolls ; Roll bending devices, e.g. hydraulic actuators acting on roll shaft ends

Definitions

  • the invention relates to a device for measuring the roll gap between work rolls of a cold or hot rolling stand for rolling out narrow or wide metal strips, in particular non-ferrous metal strips, by means of roll splitters in the form of measuring probes, displacement sensors, electro-hydraulic transducers, magnetostrictive transducers and the like. The like., whose signal can be forwarded as a roll gap setpoint to the servo valves of the pressure oil control for the piston-cylinder units influencing the roll gap.
  • the previous design for measuring the nip is carried out using measuring clamps between the work rolls (DE-OS 25 03 130) at stepped diameters next to the roll bales on the drive side and on the operating side of the roll stand.
  • the arrangement in the vicinity of the belt edge often causes damage to the device due to belt run or belt breakage.
  • the disadvantage of such designs is the high level of maintenance and swiveling the device into the maintenance position hinders the construction of other required products.
  • the devices for measuring the roll gap therefore also serve to regulate the inclined position by means of the position or the displacement transducers on the support roll chocks, as a result of which a direct roll gap measurement is given.
  • the inclined position of the roll gap cannot be set precisely enough. The reason is that the measurement solution is too far from the roll gap.
  • Known devices still work precisely, but are complex and therefore expensive and easy to damage.
  • the invention has for its object to provide a roll gap measurement which is also suitable for such cases of the lateral strip run and which is also protected and of low maintenance.
  • the position or displacement sensor is provided in at least one bending cylinder for the work rolls for indirect roll gap reference measurement via the positive or negative acting bending cylinders.
  • the roll gap measuring device is not only arranged close to the roll gap, but at the same time completely protected within the bending cylinder. This arrangement also leads to little maintenance. Measured value evaluations show that a displacement sensor installation in the bending cylinder represents the roll gap sufficiently precisely for the control against the lateral strip run. A resolution of less than 10 ⁇ m can even be achieved.
  • the control of the measured inclined position of the belt is carried out via the adjustment and / or different bending forces in the piston-cylinder units.
  • a related task of carrying out the roll gap measurement with a low rolling force is achieved according to an alternative in that the position or displacement sensor is installed at least between the bending blocks or the work roll chocks or between the fixed cylinder block and a movable component for indirect roll gap reference measurement is.
  • This solution can be used in cassette construction or in the non-positive work roll bending system in the bending cylinder of the negative or positive acting bending cylinder. It is also advantageous that the roll gap reference values can be used to regulate the position of the bending cylinders.
  • the accuracy of the roll gap control can be increased by assigning a position or displacement sensor to each bending cylinder in accordance with the number of bending cylinders in a roll stand.
  • a practical embodiment can be designed according to other features in such a way that the position or displacement sensor penetrates a cylinder sleeve, on the end face of which a magnet for the sensor rod of the magnetostrictive transducer is arranged in a central cavity of the piston for the bending cylinder and that Encoder rod, penetrating the piston rod of the bending cylinder in an axial central bore of the piston rod, which ends at a vent hole.
  • a position or displacement sensor can be adjusted in a cylinder block for the bending cylinders in a guide tube, which is fixedly arranged in a bending block.
  • the guide tube is fixed in one bending block and is slidably guided in the opposite bending block.
  • FIG. 1 shows a partial cross section through the work rolls of a hot or cold rolling stand with an axial section through a bending cylinder
  • FIG. 2 shows an axial section through the bending cylinder with a position sensor inside
  • FIG. 3 shows a section through an alternative embodiment between the Bending blocks or the work roll chocks and
  • Fig. 4 is a diagram of the inclined position of the tape to the course of the tape head.
  • the work rolls 1 a and 1 b (FIG. 1) are shown partly in section and are each guided by a support roll 2.
  • the work roll chocks 3a, 3b are guided in the stands as usual.
  • the work rolls 1a and 1b are also held in bending blocks 4a and 4b vertically displaceable to the roll gap 7.
  • the bending blocks 4a, 4b are fastened to the roll stand (not shown) of the roll stand.
  • the bending cylinders 5a, 5b are arranged in the bending blocks 4a, 4b.
  • a position or displacement sensor 6 for the roll gap reference measurement is installed and integrated in the bending cylinder 5a, 5b.
  • the position or displacement sensor 6 shown is designed as a magnetostrictive sensor (FIGS. 1 and 2).
  • a control system or a control circuit is constructed from the measured values of the position or displacement sensor 6.
  • the measured control values result in an exact setting of the roll gap 7 in order to achieve an optimal threading or unthreading into the closed roll gap 7 and for the optimal rolling of metal strips (made of steel or non-ferrous materials) with the desired flatness and the required profile.
  • the magnetostrictive position or displacement sensor 6 is shown enlarged in FIG. 2.
  • the position or displacement sensor 6 penetrates a cylinder sleeve 8, on the end face 8a of which a magnet 9 for the sensor rod 10 of the magnetostrictive transducer 6a is arranged in a central cavity 11a of the piston 11.
  • the piston rod 11b carrying the piston 11b has an axial central bore 12 in which the transmitter rod 10 is arranged.
  • the central bore 12 ends at a vent bore 13 with a screw plug 14.
  • a guide tube 16 is arranged in a cylinder block 15 near the roll gap 7.
  • the guide tube 16 is guided opposite in the bending block 4b by means of a guide bush 17 and the position or displacement sensor 6 is guided or supported by means of a guide rod 18.
  • the diagram in FIG. 4 shows the relationship between the inclined position of the roll gap 7 (measured at different points) and the lateral course of the rolled strip (made of steel or softer non-ferrous materials).
  • the coefficient of determination R 2 of the linear regression means a favorable value near "1" and is advantageous as a controlled variable. In the lower area, R 2 is smaller than in the upper area and is less suitable as a controlled variable. From these relationships it follows that regulation of the inclined position of the rolled strip by measuring on the bending blocks 4a, 4b can considerably minimize the undesired lateral strip run.

Landscapes

  • Mechanical Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Control Of Metal Rolling (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Actuator (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Crushing And Grinding (AREA)
  • Measuring Arrangements Characterized By The Use Of Fluids (AREA)
  • Continuous Casting (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Metal Rolling (AREA)

Abstract

A device for measuring the roll gap ( 7 ) between the working rollers ( 1 a: 1 b) of a cold or warm rolling stand for rolling out narrow or wide strips of metal, especially NE metal strips, by means of roll gap sensors ( 6 ) whose signals are transmitted to the servo-valves of the compressed oil control as a roll gap setpoint value for the piston cylinder units influencing said roll gap ( 7 ), and used to provide a roller gap measurement which is also suitable for such cases involving the lateral progression of said strip. In order to achieve said aim, the position or travel sensor ( 6 ) is provided in at least one bending cylinder ( 5 a ;5 b) for the working cylinder ( 1 a, 1 b) for indirect reference measurement of the roll gap via the positively or negatively acting bending cylinders ( 5 a; 5 b).

Description

Einrichtung zur Messung des Walzspaltes zwischen Arbeitswalzen eines Kalt- oder WarmwalzgerüstesDevice for measuring the roll gap between work rolls of a cold or hot rolling stand
Die Erfindung betrifft eine Einrichtung zur Messung des Walzspaltes zwischen Arbeitswalzen eines Kalt- oder Warmwalzgerüstes für das Auswalzen von schmalen oder breiten Metallbändern, insbesondere von NE-Metallbändern, mittels Walzspaltgebern in Form von Messtastem, Weggebern, elektrischhydraulischen Wandlern, magnetostriktiven Wandlern u. dgl. , deren Signal als Walzspalt-Sollwert an die Servoventile der Druckölsteuerung für die den Walz- spalt beeinflussenden Kolben-Zylinder-Einheiten weiterleitbar ist.The invention relates to a device for measuring the roll gap between work rolls of a cold or hot rolling stand for rolling out narrow or wide metal strips, in particular non-ferrous metal strips, by means of roll splitters in the form of measuring probes, displacement sensors, electro-hydraulic transducers, magnetostrictive transducers and the like. The like., whose signal can be forwarded as a roll gap setpoint to the servo valves of the pressure oil control for the piston-cylinder units influencing the roll gap.
Die bisherige Bauweise zur Walzspaltmessung erfolgt über Messzangen zwischen den Arbeitswalzen (DE-OS 25 03 130) an abgesetzten Durchmessern neben den Walzballen auf der Antriebsseite und auf der Bedienungsseite des Walzgerüstes. Die Anordnung in der Nähe der Bandkante verursacht oft Beschädigungen der Einrichtung durch Bandverlauf oder Bandriss. Nachteilig ist bei solchen Bauweisen der hohe Wartungsaufwand und ein Ausschwenken der Einrichtung in die Wartungsstellung behindert die Konstruktion anderer erforderlicher Erzeugnisse.The previous design for measuring the nip is carried out using measuring clamps between the work rolls (DE-OS 25 03 130) at stepped diameters next to the roll bales on the drive side and on the operating side of the roll stand. The arrangement in the vicinity of the belt edge often causes damage to the device due to belt run or belt breakage. The disadvantage of such designs is the high level of maintenance and swiveling the device into the maintenance position hinders the construction of other required products.
Unter der Erscheinung, dass durch die Biege-Hysterese der Arbeitswalzen sich Differenzen im Walzspalt von der Antriebsseite zur Bedienungsseite einstellen, können diese Differenzen am Geber der hydraulischen Anstellung nicht erfasst werden. Bei schmalen weichen Metallbändern wird dadurch ein erheblicher Bandverlauf beim Ein- und Ausfädeln verursacht. Die Einrichtungen zur Messung des Walzspaltes dienen daher auch zur Regelung der Schräglage über die Anstellung oder die Wegaufnehmer an den Stützwalzen-Einbaustücken, wodurch eine direkte Walzspaltmessung gegeben ist. Dabei ist die Schräglage des Walzspaltes nicht präzise genug einstellbar. Der Grund ist, dass die Mes- sung zu weit vom Walzspalt entfernt ist. Bekannte Einrichtungen arbeiten zwar dennoch genau, sind aber aufwändig und daher teuer und leicht zu beschädigen.Given the fact that the bending hysteresis of the work rolls causes differences in the roll gap from the drive side to the operating side, these differences cannot be recorded on the hydraulic adjustment sender. In the case of narrow, soft metal bands, this causes a considerable band course when threading in and out. The devices for measuring the roll gap therefore also serve to regulate the inclined position by means of the position or the displacement transducers on the support roll chocks, as a result of which a direct roll gap measurement is given. The inclined position of the roll gap cannot be set precisely enough. The reason is that the measurement solution is too far from the roll gap. Known devices still work precisely, but are complex and therefore expensive and easy to damage.
Der Erfindung liegt die Aufgabe zugrunde, eine auch für solche Fälle des seitli- chen Bandverlaufs geeignete Walzspaltmessung zu schaffen, die zudem geschützt und wartungsarm ausgebildet ist.The invention has for its object to provide a roll gap measurement which is also suitable for such cases of the lateral strip run and which is also protected and of low maintenance.
Die gestellte Aufgabe wird erfindungsgemäß dadurch gelöst, dass der Positions- oder Weggeber in zumindest einem Biegezylinder für die Arbeitswalzen zur indirekten Walzspalt-Referenzmessung über die positiv oder negativ wirkenden Biegezylinder vorgesehen ist. Dadurch entsteht eine walzspaltnahe Wegmessung mit dem Vorteil der indirekten Erfassung einer Walzspaltänderung. Außerdem ist die Walzspaltmess-Einrichtung nicht nur nahe zum Walzspalt , sonder gleichzeitig völlig geschützt innerhalb des Biegezylinders ange- ordnet. Diese Anordnung führt auch zu einem geringen Wartungsaufwand. Messwertauswertungen zeigen, dass ein Weggebereinbau in dem Biegezylinder den Walzspalt genügend genau für die Regelung gegen seitlichen Bandverlauf repräsentieren. Es kann sogar eine Auflösung von weniger als 10 μm erreicht werden. Die Regelung der gemessenen Schräglage des Bandes erfolgt über die Anstellung und / oder unterschiedliche Biegekräfte in den Kolben- Zylinder-Einheiten.The object is achieved according to the invention in that the position or displacement sensor is provided in at least one bending cylinder for the work rolls for indirect roll gap reference measurement via the positive or negative acting bending cylinders. This results in a path measurement close to the roll gap with the advantage of indirect detection of a change in the roll gap. In addition, the roll gap measuring device is not only arranged close to the roll gap, but at the same time completely protected within the bending cylinder. This arrangement also leads to little maintenance. Measured value evaluations show that a displacement sensor installation in the bending cylinder represents the roll gap sufficiently precisely for the control against the lateral strip run. A resolution of less than 10 μm can even be achieved. The control of the measured inclined position of the belt is carried out via the adjustment and / or different bending forces in the piston-cylinder units.
Eine diesbezügliche Aufgabe, die Walzspaltmessung bei niedriger Walzkraft vorzunehmen, wird nach einer Alternativen dadurch gelöst, dass der Positions- oder Weggeber zumindest zwischen den Biegeblöcken oder den Arbeitswalzen- Einbau-stücken oder zwischen dem feststehenden Zylinderblock und einem beweglichen Bauteil zur indirekten Walzspalt-Referenzmessung eingebaut ist. Diese Lösung kann bei Kassetten-Bauweise oder im kraftschlüssigen Arbeitswalzen-Biegesystem im Biegezylinder der negativ oder positiv wirkenden Bie- gezyl indem eingesetzt werden. Dabei ist weiter vorteilhaft, dass die Walzspalt-Referenzwerte zur Ausregelung der Position der Biegezylinder verwendbar sind.A related task of carrying out the roll gap measurement with a low rolling force is achieved according to an alternative in that the position or displacement sensor is installed at least between the bending blocks or the work roll chocks or between the fixed cylinder block and a movable component for indirect roll gap reference measurement is. This solution can be used in cassette construction or in the non-positive work roll bending system in the bending cylinder of the negative or positive acting bending cylinder. It is also advantageous that the roll gap reference values can be used to regulate the position of the bending cylinders.
Weitere Vorteile ergeben sich dadurch, dass die Walzspalt-Referenzwerte der hydraulischen Walzenanstellung aufschaltbar sind, wobei der Walzspalt über die Walzenanstellung oder gemeinsam über das Biegen der Arbeitswalzen ausregelbar ist.Further advantages result from the fact that the roll gap reference values of the hydraulic roll adjustment can be switched on, wherein the roll gap can be adjusted via the roll adjustment or together via the bending of the work rolls.
Die Genauigkeit der Walzspalt-Regelung kann nach weiteren Merkmalen dadurch erhöht werden, dass in einem Walzgerüst entsprechend der Anzahl der Biegezylinder jedem Biegezylinder ein Positions- oder Weggeber zugeordnet ist.According to further features, the accuracy of the roll gap control can be increased by assigning a position or displacement sensor to each bending cylinder in accordance with the number of bending cylinders in a roll stand.
Eine praktische Ausführungsform kann nach anderen Merkmalen dahingehend gestaltet sein, dass der Positions- oder Weggeber eine Zylinderbuchse durch- dringt, an deren Stirnseite ein Magnet für die Geberstange des magnetostrikti- ven Wandlers in einem zentrischen Hohlraum des Kolbens für den Biegezylinder angeordnet ist und dass die Geberstange, die Kolbenstange des Biegezylinders durchdringend in einer axialen Mittelbohrung der Kolbenstange verläuft, die an einer Entlüftungsbohrung endet.A practical embodiment can be designed according to other features in such a way that the position or displacement sensor penetrates a cylinder sleeve, on the end face of which a magnet for the sensor rod of the magnetostrictive transducer is arranged in a central cavity of the piston for the bending cylinder and that Encoder rod, penetrating the piston rod of the bending cylinder in an axial central bore of the piston rod, which ends at a vent hole.
Nach weiteren Merkmalen ist vorgesehen, dass in einem Zylinderblock für die Biegezylinder in einem Führungsrohr ein Positions- oder Weggeber verstellbar ist, der in einem Biegeblock fest angeordnet ist.According to further features, it is provided that a position or displacement sensor can be adjusted in a cylinder block for the bending cylinders in a guide tube, which is fixedly arranged in a bending block.
Weiterhin ist vorteilhaft, dass das Führungsrohr in einem Biegeblock fest angeordnet und im gegenüberliegenden Biegeblock gleitend geführt ist.It is also advantageous that the guide tube is fixed in one bending block and is slidably guided in the opposite bending block.
Dabei ist noch eine Ausgestaltung derart vorgesehen, dass das Führungsrohr in einer Führungsbuchse in einem gegenüberliegenden Biegeblock gleitend gela- gert ist. Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden nachstehend näher erläutert.Another embodiment is provided such that the guide tube is slidably mounted in a guide bush in an opposite bending block. Embodiments of the invention are shown in the drawing and are explained in more detail below.
Es zeigen:Show it:
Fig. 1 einen Teil-Querschnitt durch die Arbeitswalzen eines Warm- oder Kaltwalzgerüstes mit einem axialen Schnitt durch einen Biegezylinder, Fig. 2 einen axialen Schnitt durch den Biegezylinder mit einem Positionsgeber in dessen Innerem, Fig. 3 einen Schnitt durch eine alternative Ausführungsform zwischen den Biegeblöcken oder den Arbeitswalzen-Einbaustücken und1 shows a partial cross section through the work rolls of a hot or cold rolling stand with an axial section through a bending cylinder, FIG. 2 shows an axial section through the bending cylinder with a position sensor inside, FIG. 3 shows a section through an alternative embodiment between the Bending blocks or the work roll chocks and
Fig. 4 ein Diagramm zur Schräglage des Bandes zum Verlauf des Bandkopfes.Fig. 4 is a diagram of the inclined position of the tape to the course of the tape head.
Die Arbeitswalzen 1a und 1 b (Fig. 1) sind teilweise geschnitten dargestellt und werden durch jeweils eine Stützwalze 2 geführt. Die Arbeitswalzen- Einbaustücke 3a, 3b sind in den Ständern wie üblich geführt.The work rolls 1 a and 1 b (FIG. 1) are shown partly in section and are each guided by a support roll 2. The work roll chocks 3a, 3b are guided in the stands as usual.
Die Arbeitswalzen 1a und 1 b sind ferner in Biegeblöcken 4a und 4b senkrecht verschieblich zum Walzspalt 7 gehalten. Die Biegeblöcke 4a, 4b sind am ( nicht gezeichneten) Walzenständer des Walzgerüstes befestigt. In den Biegeblöcken 4a, 4b sind die Biegezylinder 5a, 5b angeordnet. In jedem Biegezylinder 5a, 5b ist ein Positions- oder Weggeber 6 zur Walzspalt-Referenzmessung eingebaut und in den Biegezylinder 5a, 5b integriert. Der gezeichnete Positions- oder Weggeber 6 ist als magnetostriktiver Geber ausgeführt (Fig. 1 und 2). Aus den gemessenen Werten des Positions- oder Weggebers 6 wird ein Regelsystem bzw. ein Regelkreis aufgebaut.The work rolls 1a and 1b are also held in bending blocks 4a and 4b vertically displaceable to the roll gap 7. The bending blocks 4a, 4b are fastened to the roll stand (not shown) of the roll stand. The bending cylinders 5a, 5b are arranged in the bending blocks 4a, 4b. In each bending cylinder 5a, 5b, a position or displacement sensor 6 for the roll gap reference measurement is installed and integrated in the bending cylinder 5a, 5b. The position or displacement sensor 6 shown is designed as a magnetostrictive sensor (FIGS. 1 and 2). A control system or a control circuit is constructed from the measured values of the position or displacement sensor 6.
Die gemessenen Regelwerte bewirken eine exakte Einstellung des Walzspaltes 7, um ein optimales Ein- oder Ausfädeln in den geschlossenen Walzspalt 7 und zum optimalen Walzen von Metallbändern (aus Stahl oder NE-Werkstoffen) mit angestrebter Planheit und dem geforderten Profil zu erzielen. Der magnetostriktive Positions- oder Weggeber 6 ist in Fig. 2 vergrößert dargestellt. Der Positions- oder Weggeber 6 durchdringt eine Zylinderbuchse 8, an deren Stirnseite 8a ein Magnet 9 für die Geberstange 10 des magnetostriktiven Wandlers 6a in einem zentrischen Hohlraum 11a des Kolbens 11 angeordnet ist. Die den Kolben 11 tragende Kolbenstange 11 b weist eine axiale Mittelbohrung 12 auf, in der die Geberstange 10 angeordnet ist. Die Mittelbohrung 12 endet an einer Entlüftungsbohrung 13 mit einer Verschlussschraube 14.The measured control values result in an exact setting of the roll gap 7 in order to achieve an optimal threading or unthreading into the closed roll gap 7 and for the optimal rolling of metal strips (made of steel or non-ferrous materials) with the desired flatness and the required profile. The magnetostrictive position or displacement sensor 6 is shown enlarged in FIG. 2. The position or displacement sensor 6 penetrates a cylinder sleeve 8, on the end face 8a of which a magnet 9 for the sensor rod 10 of the magnetostrictive transducer 6a is arranged in a central cavity 11a of the piston 11. The piston rod 11b carrying the piston 11b has an axial central bore 12 in which the transmitter rod 10 is arranged. The central bore 12 ends at a vent bore 13 with a screw plug 14.
Gemäß Fig. 3 ist jeweils in einem Zylinderblock 15 ein Führungsrohr 16 nahe dem Walzspalt 7 angeordnet. In dem Biegeblock 4a ist das Führungsrohr 16 gegenüberliegend in dem Biegeblock 4b mittels einer Führungsbuchse 17 geführt und der Positions- oder Weggeber 6 ist mittels einer Führungsstange 18 geführt bzw. gelagert.3, a guide tube 16 is arranged in a cylinder block 15 near the roll gap 7. In the bending block 4a, the guide tube 16 is guided opposite in the bending block 4b by means of a guide bush 17 and the position or displacement sensor 6 is guided or supported by means of a guide rod 18.
In dem Diagramm der Fig. 4 ist der Zusammenhang zwischen der Schräglage des Walzspaltes 7 (gemessen an verschiedenen Stellen) und dem seitlichen Verlaufen des Walzbandes (aus Stahl oder weicheren NE-Werkstoffen) dargestellt. Das Bestimmtheitsmaß R2 der linearen Regression bedeutet nahe "1 " einen günstigen Wert und ist als Regelgröße vorteilhaft. In dem unteren Bereich ist R2 kleiner als in dem oberen Bereich und ist als Regelgröße weniger geeignet. Aus diesen Zusammenhängen folgt, dass eine Regelung der Schräglage des Walzbandes durch messen an den Biegeblöcken 4a, 4b den unerwünschten seitlichen Bandverlauf erheblich minimieren kann. The diagram in FIG. 4 shows the relationship between the inclined position of the roll gap 7 (measured at different points) and the lateral course of the rolled strip (made of steel or softer non-ferrous materials). The coefficient of determination R 2 of the linear regression means a favorable value near "1" and is advantageous as a controlled variable. In the lower area, R 2 is smaller than in the upper area and is less suitable as a controlled variable. From these relationships it follows that regulation of the inclined position of the rolled strip by measuring on the bending blocks 4a, 4b can considerably minimize the undesired lateral strip run.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 a Arbeitswalze1 a work roll
1 b Arbeitswalze1 b work roll
2a Stützwalze2a backup roller
2b Stützwalze2b backup roller
3a Arbeitswalzen-Einbaustück3a work roll chock
3b Arbeitswalzen-Einbaustück3b work roll chock
4a Biegeblock4a bending block
4b Biegeblock4b bending block
5a Biegezylinder5a bending cylinder
5b Biegezylinder5b bending cylinder
6 Positions- oder Weggeber6 position or displacement sensors
6a magnetostriktiver Wandler6a magnetostrictive transducer
7 Walzspalt7 roll gap
8 Zylinderbuchse8 cylinder liner
9 Magnet9 magnet
10 Geberstange10 sensor rod
11 Kolben11 pistons
11 a zentrischer Hohlraum11 a centric cavity
11 b Kolbenstange11 b piston rod
12 axiale Mittelbohrung12 axial center hole
13 Entlüftungsbohrung13 vent hole
14 Verschlusschraube14 screw plug
15 Zylinderblock15 cylinder block
16 Führungsrohr16 guide tube
17 Führungsbuchse17 guide bush
18 Führungsstange 18 guide rod

Claims

Patentansprüche claims
1 . Einrichtung zur Messung des Walzspaltes zwischen Arbeitswalzen eines Kalt- oder Warmwalzgerüstes für das Auswalzen von schmalen oder breiten Metallbändern, insbesondere von NE-Metallbändern, mittels Walzspaltgebern in Form von Messtastern, Weggebern, elektrisch- hydraulischen Wandlern, magnetostriktiven Wandlern u . dgl., deren Signal als Walzspalt-Sollwert an die Servoventile der Druckölsteuerung für die den Walzspalt beeinflussenden Kolben-Zylinder-Einheiten weiterleitbar ist, dadurch gekennzeichnet, dass der Positions- oder Weggeber (6) in zumindest einem Biegezylinder (5a; 5b) für die Arbeitswalzen (1 a, 1 b) zur indirekten Walzspalt- Referenzmessung über die positiv oder negativ wirkenden Biegezylinder (5a; 5b) vorgesehen ist.1 . Device for measuring the roll gap between work rolls of a cold or hot rolling stand for the rolling out of narrow or wide metal strips, in particular non-ferrous metal strips, by means of roll splitters in the form of measuring sensors, displacement sensors, electro-hydraulic converters, magnetostrictive converters and the like. Like., whose signal can be forwarded as a roll gap setpoint to the servo valves of the pressure oil control for the piston-cylinder units influencing the roll gap, characterized in that the position or displacement sensor (6) in at least one bending cylinder (5a; 5b) for the Work rolls (1 a, 1 b) for indirect roll gap reference measurement via the positive or negative acting bending cylinders (5a; 5b) is provided.
2. Einrichtung zur Messung des Walzspaltes zwischen Arbeitswalzen eines Kalt- oder Warmwalzgerüstes für das Auswalzen von schmalen und / oder breiten Metallbändern, insbesondere von NE-Metallbändern, mittels Walzspaltgebern in Form von Messtastern, Weggebern, elektrischhydraulischen Wandlern, magnetostriktiven Wandlern u. dgl., deren Si- gnal als Walzspalt-Sollwert an die Servoventile der Druckölsteuerung für die den Walzspalt beeinflussenden Kolben-Zylinder-Einheiten weiterleitbar ist, dadurch gekennzeichnet, dass der Positions- oder Weggeber (6) zumindest zwischen den Biege- blocken (4a, 4b) oder den Arbeitswalzen-Einbaustücken (3a, 3b) oder zwischen dem feststehenden Zylinderblock (15) und einem beweglichen Bauteil zur indirekten Walzspalt-Referenzmessung eingebaut ist. 2. Device for measuring the roll gap between work rolls of a cold or hot rolling stand for the rolling out of narrow and / or wide metal strips, in particular non-ferrous metal strips, by means of roll splitters in the form of measuring sensors, displacement sensors, electro-hydraulic converters, magnetostrictive converters and the like. Like., whose signal can be forwarded as a roll gap setpoint to the servo valves of the pressure oil control for the piston-cylinder units influencing the roll gap, characterized in that the position or displacement sensor (6) at least between the bending blocks (4a, 4b) or the work roll chocks (3a, 3b) or between the fixed cylinder block (15) and a movable component for indirect roll gap reference measurement.
3. Einrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Walzspalt-Referenzwerte zur Ausregelung der Position der Biegezylinder (5a; 5b) verwendbar sind.3. Device according to one of claims 1 or 2, characterized in that the roll gap reference values can be used to regulate the position of the bending cylinders (5a; 5b).
4. Einrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Walzspalt-Referenzwerte der hydraulischen Walzenanstellung aufschaltbar sind, wobei der Walzspalt (7) über die Walzenanstellung und / oder über das Biegen der Arbeitswalzen (1 a, 1 b) ausregelbar ist.4. Device according to one of claims 1 or 2, characterized in that the roll gap reference values of the hydraulic roll adjustment can be switched on, the roll gap (7) being adjustable via the roll adjustment and / or the bending of the work rolls (1 a, 1 b) is.
5. Einrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass in einem Walzgerüst entsprechend der Anzahl der Biegezylinder (5a; 5b) jedem Biegezylinder (5a; 5b) ein Positions- oder Weggeber (6) zugeordnet ist.5. Device according to one of claims 1 to 4, characterized in that in a roll stand corresponding to the number of bending cylinders (5a; 5b), each bending cylinder (5a; 5b) is assigned a position or displacement sensor (6).
6. Einrichtung nach einem der Ansprüche 1 und 3 bis 5, dadurch gekennzeichnet, dass der Positions- oder Weggeber (6) eine Zylinderbuchse (8) durch- dringt, an deren Stirnseite (8a) ein Magnet (9) für die Geberstange (10) des magnetostriktiven Wandlers (6a) in einem zentrischen Hohlraum (1 1 a) des Kolbens (1 1 ) für den Biegezylinder (5) angeordnet ist und dass die Geberstange (10), die Kolbenstange (1 1 b) des Biegezylinders (5) durchdringend, in einer axialen Mittelbohrung (12) der Kolbenstange (1 b) verläuft, die an einer Entlüftungsbohrung (13) endet.6. Device according to one of claims 1 and 3 to 5, characterized in that the position or displacement sensor (6) penetrates a cylinder sleeve (8), on the end face (8a) of which a magnet (9) for the sensor rod (10 ) of the magnetostrictive transducer (6a) is arranged in a central cavity (1 1 a) of the piston (1 1) for the bending cylinder (5) and that the transmitter rod (10), the piston rod (1 1 b) of the bending cylinder (5) penetrating, in an axial central bore (12) of the piston rod (1 b), which ends at a vent hole (13).
7. Einrichtung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass in einem Zylinderblock (15) für die Biegezylinder (5a; 5b) in einem Führungsrohr (16) ein Positions- oder Weggeber (6) verstellbar ist, der in einem Biegeblock (4a; 4b) fest angeordnet ist. 7. Device according to one of claims 2 to 5, characterized in that in a cylinder block (15) for the bending cylinder (5a; 5b) in a guide tube (16), a position or displacement sensor (6) is adjustable, which is in a bending block (4a; 4b) is fixed.
8. Einrichtung nach einem der Ansprüche 2 bis 5 und 7, dadurch gekennzeichnet, dass das Führungsrohr (16) in einem Biegeblock (4a; 4b) fest angeordnet und im gegenüberliegenden Biegeblock (4a; 4b) gleitend geführt ist.8. Device according to one of claims 2 to 5 and 7, characterized in that the guide tube (16) in a bending block (4a; 4b) fixed and is slidably guided in the opposite bending block (4a; 4b).
9. Einrichtung nach einem der Ansprüche 2 bis 5 , 7 oder 8, dadurch gekennzeichnet, dass das Führungsrohr (16) in einer Führungsbuchse (17) in einem gegenüberliegenden Biegeblock (4a; 4b) gleitend gelagert ist. 9. Device according to one of claims 2 to 5, 7 or 8, characterized in that the guide tube (16) is slidably mounted in a guide bush (17) in an opposite bending block (4a; 4b).
EP02787736A 2001-12-12 2002-11-20 Device for measuring the roll gap between the working rollers of a cold or warm rolling stand Revoked EP1453620B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10161094 2001-12-12
DE10161094 2001-12-12
DE10202526 2002-01-24
DE10202526.6A DE10202526B4 (en) 2001-12-12 2002-01-24 Device for measuring the roll gap between work rolls of a cold or hot rolling stand
PCT/EP2002/012976 WO2003053604A1 (en) 2001-12-12 2002-11-20 Device for measuring the roll gap between the working rollers of a cold or warm rolling stand

Publications (2)

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EP1453620A1 true EP1453620A1 (en) 2004-09-08
EP1453620B1 EP1453620B1 (en) 2011-02-02

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US (1) US7174758B2 (en)
EP (1) EP1453620B1 (en)
JP (1) JP4886966B2 (en)
CN (1) CN1313220C (en)
AT (1) ATE497414T1 (en)
AU (1) AU2002352062A1 (en)
BR (1) BR0214472B1 (en)
CA (1) CA2469077C (en)
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ES (1) ES2359805T3 (en)
RU (1) RU2296020C2 (en)
TW (1) TWI271226B (en)
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ES2359805T3 (en) 2011-05-27
BR0214472B1 (en) 2010-09-21
RU2004121181A (en) 2005-06-10
CN1604825A (en) 2005-04-06
TW200301714A (en) 2003-07-16
CA2469077A1 (en) 2003-07-03
AU2002352062A1 (en) 2003-07-09
WO2003053604A1 (en) 2003-07-03
JP2005512815A (en) 2005-05-12
CA2469077C (en) 2011-02-01
BR0214472A (en) 2004-09-14
DE50214899D1 (en) 2011-03-17
ATE497414T1 (en) 2011-02-15
JP4886966B2 (en) 2012-02-29
TWI271226B (en) 2007-01-21
US7174758B2 (en) 2007-02-13
UA90649C2 (en) 2010-05-25
US20050066698A1 (en) 2005-03-31
RU2296020C2 (en) 2007-03-27
EP1453620B1 (en) 2011-02-02
CN1313220C (en) 2007-05-02

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