EP0988904B1 - Procédé et appareil pour mesurer la planéité de bandes - Google Patents

Procédé et appareil pour mesurer la planéité de bandes Download PDF

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Publication number
EP0988904B1
EP0988904B1 EP99116003A EP99116003A EP0988904B1 EP 0988904 B1 EP0988904 B1 EP 0988904B1 EP 99116003 A EP99116003 A EP 99116003A EP 99116003 A EP99116003 A EP 99116003A EP 0988904 B1 EP0988904 B1 EP 0988904B1
Authority
EP
European Patent Office
Prior art keywords
strip
measuring
braking force
measuring region
flatness
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
EP99116003A
Other languages
German (de)
English (en)
Other versions
EP0988904A2 (fr
EP0988904A3 (fr
Inventor
Rolf Dipl.-Ing. Noé
Andreas Dr. mont Dipl.-Ing. Noé
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.)
BWG Bergwerk und Walzwerk Maschinenbau GmbH
Original Assignee
BWG Bergwerk und Walzwerk Maschinenbau GmbH
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
Application filed by BWG Bergwerk und Walzwerk Maschinenbau GmbH filed Critical BWG Bergwerk und Walzwerk Maschinenbau GmbH
Publication of EP0988904A2 publication Critical patent/EP0988904A2/fr
Publication of EP0988904A3 publication Critical patent/EP0988904A3/fr
Application granted granted Critical
Publication of EP0988904B1 publication Critical patent/EP0988904B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips

Definitions

  • the invention relates to a method for flatness measurement of strips, in particular metal strips, as they pass through of, for example, strip treatment plants, rolling mills or the like, after which the continuous belt with a predetermined strip tension is applied, and after which by means of at least one in a measuring range in a predetermined Distance from the belt surface arranged measuring device Band unevenness can be detected.
  • Such a method is the subject of, for example DE-PS 28 13 719. Is also comparable in the DE-OS 42 24 569 procedure.
  • Both previously known teachings have one thing in common, that as it were an indirect measurement of the flatness of the strip by measuring the band tension distribution over the Bandwidth is done using flatness measuring rollers. The Band tension distribution allows conclusions to be drawn Band flatness too.
  • the moving belt is deflected in the measuring direction using a power transmission device. there the deflection is measured and from this to the band flatness closed.
  • the known measurement methods work as it were indirectly, because different deflections of the Ribbon to differences in length of individual ribbon longitudinal fibers corresponding from which to the flatness of the volume is inferred.
  • flatness measuring rollers are only a limited one Show accuracy.
  • the longitudinal tension of the strip can be only with an accuracy of approx. 2 to 5 Mpa determine what the corresponding uncertainties in the Accuracy of the flatness measurement leads. Otherwise find Cross stresses in the band no precipitation, which is also affect the flatness. It must also be taken into account that even with a flat belt influences of neighboring deflection rollers, drive rollers or from the winding process the longitudinal stress distribution over the bandwidth influence.
  • the invention is based on the technical problem Method for measuring flatness of strips of the beginning further described configuration so that without Production loss - as it were online - a reliable one and exact flatness measurement can be achieved.
  • the invention teaches a method for achieving this object for measuring flatness of strips, especially metal strips, in the course of running through, for example, strip treatment plants, Rolling mills or the like, after which continuous belt with a given belt tension is acted upon, according to which at least one in one Measuring range at a specified distance from the belt surface arranged measuring device band unevenness contactless are detected, and then the tape tension in and / or immediately in front of the measuring range by a predetermined amount and consequently is specifically reduced to band-related errors exclude (for the most part) in the flatness measurement can.
  • the conveyor belt is usually pre-run and / or in the measuring range with a compared to the strip tensile force essentially opposite braking force applied, the braking force in terms of amount almost corresponds to the belt tension.
  • a belt treatment plant is within the scope of the invention to every conceivable device, which for transport, for Treatment, for coating etc. of a continuous Band is suitable.
  • the one required to transport the tape Tension or the associated belt tension becomes regular of train drivers or a set of pull rollers and one Brake roller set applied.
  • Under the belt surface is in the present case the band surface and / or the band bottom surface - in contrast to the strip cross-sectional area - to understand.
  • the continuous band is preferably at least one before, after and / or in the measuring range and if necessary at least one further one arranged after the measuring range Deflection roller guided, the upstream of the measuring range Deflection roller can be designed as a tension measuring roller and Determines the belt tension in the measuring range. there the belt tensile force in the measuring range continues regulate preferred embodiment of the invention.
  • this Context is usually used as the input variable of the tension measuring roller determined tape tensile force in the measuring range used, with appropriate control signals as the manipulated variable be transmitted to a braking force device. Naturally a control system is required for this appropriate signals and the evaluation of the Tension measuring roller takes measured values.
  • any other measuring device on the input side of the measuring range or within can come as long as this measuring device for determination the tape tension or the tape tension is suitable.
  • the braking force can be easily adjusted accordingly build up or adjust. This is done in such a way that the The braking force is almost equal to the belt tension, so that the continuous belt in the measuring area is almost draft-free is.
  • braking forces are used here, which correspond approximately to 98.99% of the belt tension.
  • a particularly preferred embodiment of the invention with independent meaning is characterized in that the braking force device the continuous belt with the the braking force opposing the belt tension applied without contact.
  • the braking force device the corresponding braking force in the continuous tape enters how this z.
  • B. means an S-roll set succeeds.
  • the contactless application of braking force is generally by means of at least made of a linear motor, such as in German patent application 197 19 994.1-32 to which express reference is made. Because additionally still the measuring device belt unevenness contactless a maximum total belt protection is recorded reached. There is a risk of belt surface damage locked out.
  • the measuring device works in the vertical direction compared to the continuous belt, namely across its entire range.
  • the of the The measuring device determined flatness values as input variables (Actual values) fed into a flatness control system are, where connected actuators for Flatness control (after a target / actual value comparison) be influenced accordingly. That said, it can basically be proceeded like this in the named DE-OS 42 24 569 is described.
  • the invention also relates to a device for Flatness measurement of strips, especially metal strips, with at least one device for loading the continuous belt with a predetermined belt tension and with at least one in a measuring range in a predetermined Distance from the belt surface arranged measuring device for the contactless detection of flatness of the strip, which is characterized by a particularly functional and simple construction.
  • a braking force device for targeted Reduction of the belt tension and to apply a Arranged braking force.
  • the braking device can work as at least a non-contact Be linear motor. But there is also the possibility that the braking force device from S-roller sets as well as pressure and drive rollers.
  • Such a device for Flatness measurement can also be used in rolling mills like with straightening systems or winding processes.
  • a device for measuring flatness of strips 1, according to the exemplary embodiment metal strips 1, is shown in the figures.
  • the continuous belt 1 is subjected to a predetermined belt tensile force F z , which is applied via a pull roller set 2 and a brake roller set 3.
  • the arrangement may be made in principle as it is shown in DE-OS 39 12 676 or DE-OS 26 25 414 (see FIG. 2).
  • the required belt tensile force F z is generated without contact by means of a linear motor 4 or more or a series of linear motors.
  • this linear motor 4 has a stator or inductor 5 and an armature 1.
  • This armature 1 is the metal strip 1.
  • the metal strip 1 moves over the linear motor 4, which can generate tension and / or pressure in the metal strip 1.
  • the stator 5 has coils arranged next to one another in slots between transverse teeth.
  • This measuring range M is designed as a vertical measuring section, with its Length essentially corresponds to the maximum bandwidth.
  • the measuring device 6 is at a predetermined distance A from the Belt surface arranged and detected belt unevenness.
  • the strip tensile force F z is deliberately reduced in order to be able to rule out strip tension-related errors in the flatness measurement.
  • the braking force B is opposite to that of the strip tensile force F z .
  • This braking force B is applied by a braking force device 7.
  • This braking force device 7, according to the exemplary embodiment in FIG. 1, is a linear motor 7, while in the exemplary embodiment according to FIG. 2, two S-roller sets 7a, 7b are provided. 1, the braking force device 7 is arranged within the measuring range M, while, as shown in FIG. 2, an arrangement in front of it (and behind it) is tracked. Mixed forms are of course also conceivable.
  • the linear motor 7 operates contactlessly and generates the braking force B at this point in such a way that the metal strip 1 is acted upon by a continuous field which is opposite to the linear motor 4.
  • belt tension F z and braking force B are directed in opposite directions, as the associated force vectors make clear in the figures.
  • angular positions are also within the scope of the invention, in which case the actually acting braking force B is measured on the basis of the horizontal component B H lying in the direction of the strip tension or the direction of the force of the strip, as is indicated in FIG. 1.
  • B v designates the corresponding vertical component of the braking force B. -
  • the above illustration also makes it clear that the braking force B (or B H ) and the band tension force F z are of almost equal magnitude.
  • the continuous strip or metal strip 1 is guided over at least one deflection roller 8 arranged in front of or in the measuring area M.
  • a further deflection roller 9 arranged after the measuring range M can be provided. This also applies to the deflection roller 10 which is also implemented within the measuring range.
  • the deflection roller 8 upstream of the measuring range M is designed as a tension measuring roller 8 and is used to determine the tape tensile force F z within the measuring range M.
  • a control system 11 is also provided, to which the tension measuring roller 8 upstream of the measuring range M is connected.
  • the aforementioned tension measuring roller 8 supplies actual values of the tape tension force -F z to the aforementioned control system 11, which influences the braking force device 7 accordingly in order to control the braking force B and to set the desired tape tension force F z in the measuring range M.
  • the braking force device 7 is connected to the control system 11 and is subjected to derived default values.
  • control system 11 controls the electrical power supplied to the respectively associated stator 5 of the linear motor 7 and thus the braking force B.
  • the direction of the current flow can also generally be influenced in this way, although in the present case this is always chosen such that the braking force B is directed counter to the belt tensile force F z .
  • the measuring device 6 is as shown Representation around a CCD camera. Of course is on a laser-optical distance meter is also conceivable at this point. In the same way, inductive or capacitive Sensors are used. Moiré processes can also be used for flatness measurement.
  • the measuring device 6 in the vertical direction V compared to continuous band 1 with a predetermined distance A above arranged the band surface and works according to the embodiment without contact.
  • flatness measuring rollers conceivable, although not preferred.
  • the braking force B is applied via local S-roller sets 7a, 7b with associated pressure rollers 12.
  • These S-roller sets 7a, 7b can in principle be driven at different speeds, so that the desired reduction in the belt tensile force F z or the application of the braking force B can be represented without problems. This is usually done via the gearboxes with speed control assigned to the respective S-roller sets 7a, 7b, which are not shown in detail.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Control Of Metal Rolling (AREA)

Claims (12)

  1. Procédé pour mesurer la planéité de bandes (1), en particulier de bandes de métal (1), circulant, par exemple, dans des installations de traitement de bandes, des laminoirs ou analogues,
       dans lequel la bande circulante (1) est soumise à une force de traction de bande (Fz) prédéfinie,
       dans lequel des défauts de planéité de bande sont détectés sans contact au moyen au moins d'un dispositif de mesure (6), disposé dans une zone de mesure (M), à une distance prédéfinie (A) de la surface de la bande
       et dans lequel la force de traction de bande (Fz) peut être réduite de manière ciblée avant et / ou dans la zone de mesure (M), pour pouvoir exclure des défauts liés à la traction de la bande lors de la mesure de la planéité.
  2. Procédé selon la revendication 1, caractérisé en ce que la bande circulante (1) est soumise avant et / ou dans la zone de mesure (M) à une force de freinage (B) dirigée essentiellement de manière opposée, par rapport à la force de traction de bande (Fz), la force de freinage (B) correspondant en valeur presque à la force de traction de bande (Fz).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la bande circulante (1) est guidée par l'intermédiaire d'au moins une poulie de renvoi (8), disposée avant, après et / ou dans la zone de mesure (M), la poulie de renvoi précitée (8) étant constituée en tant que poulie de mesure de traction (8) et servant à définir la force de traction de bande (Fz) dans la zone de mesure (M).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la force de traction de bande (Fz) est régulée dans la zone de mesure (M), la force de traction de bande (Fz) déterminée étant mesurée en tant que grandeur d'entrée, par exemple par la poulie de mesure de traction (8), dans la zone de mesure (M) et des signaux de régulation correspondant étant transmis, en tant que grandeur de commande, à un dispositif de force de freinage (7).
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que le dispositif de force de freinage (7) applique sans contact à la bande circulante (1) la force de freinage (B) dirigée de manière opposée à la force de traction de bande (Fz).
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que le dispositif de mesure (6) fonctionne dans le sens vertical (V), par rapport à la bande circulante (1) et sur toute sa largeur de bande.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que les valeurs de planéité, déterminées par le dispositif de mesure (6), sont injectées en tant que grandeurs d'entrée dans une installation de régulation de planéité (14), des actionneurs (13), qui y sont raccordés et destinés à réguler la planéité, étant influencés en conséquence.
  8. Dispositif pour mesurer la planéité de bandes circulantes (1), soumises d'une force de traction de bande prédéfinie, en particulier des bandes de métal (1), pour la mise en oeuvre du procédé selon l'une des revendications 1 à 7,
       avec au moins un dispositif de mesure (6), disposé dans une zone de mesure (M), à une distance prédéfinie (A) de la surface de la bande, pour une détection sans contact de défauts de planéité de bandes,
       un dispositif de force de freinage (7) étant disposé devant et / ou dans la zone de mesure (M), pour une réduction ciblée de la force de traction de bande (Fz) et l'application d'une force de freinage (B).
  9. Dispositif selon la revendication 8, caractérisé en ce que le dispositif de force de freinage (7) est constitué en tant qu'au moins un moteur linéaire (7), fonctionnant sans contact.
  10. Dispositif selon la revendication 8 ou 9, caractérisé en ce que le dispositif de force de freinage (7) est constitué en tant qu'au moins un jeu de rouleaux S (7a, 7b), placé en amont de la zone de mesure (M), le cas échéant avec un galet presseur (12).
  11. Dispositif selon l'une des revendications 8 à 10, caractérisé en ce qu'au moins un rouleau de mesure de traction (8), disposé en amont, en aval de la zone de mesure (M) et / ou dans la zone de mesure (M), est prévu, lequel rouleau délivre des valeurs réelles de la force de traction de bande (Fz) dans la zone de mesure (M) à une installation de régulation (11) raccordée, l'installation de régulation (11) influençant en conséquence le dispositif de force de freinage (7) en vue de la commande de la force de freinage (B) et de la détermination dé la force de traction de bande (Fz) souhaitée dans la zone de mesure (M).
  12. Dispositif selon l'une des revendications 8 à 11, caractérisé en ce que la zone de mesure (M) est constituée en tant que trajet de mesure verticale et que la longueur du trajet de mesure correspond le cas échéant à la largeur maximale de la bande.
EP99116003A 1998-09-24 1999-08-14 Procédé et appareil pour mesurer la planéité de bandes Expired - Lifetime EP0988904B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843899 1998-09-24
DE19843899A DE19843899C1 (de) 1998-09-24 1998-09-24 Verfahren und Vorrichtung zur Planheitsmessung von Bändern

Publications (3)

Publication Number Publication Date
EP0988904A2 EP0988904A2 (fr) 2000-03-29
EP0988904A3 EP0988904A3 (fr) 2003-01-22
EP0988904B1 true EP0988904B1 (fr) 2004-02-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99116003A Expired - Lifetime EP0988904B1 (fr) 1998-09-24 1999-08-14 Procédé et appareil pour mesurer la planéité de bandes

Country Status (7)

Country Link
US (1) US6164104A (fr)
EP (1) EP0988904B1 (fr)
AT (1) ATE260151T1 (fr)
CA (1) CA2283192C (fr)
DE (2) DE19843899C1 (fr)
ES (1) ES2212429T3 (fr)
ZA (1) ZA995849B (fr)

Families Citing this family (9)

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Publication number Priority date Publication date Assignee Title
AU757340B2 (en) * 1999-04-02 2003-02-20 Hunter Douglas Industries Bv Method and arrangement for automatic bow adjustment
ES2223334T3 (es) * 1999-05-28 2005-03-01 Ims-Messsysteme Gmbh Procedimiento para la determinacion delaplanitud deuna banda de material.
DE10224938B4 (de) * 2002-06-04 2010-06-17 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Verfahren und Vorrichtung zur Planheitsmessung von Bändern
US20070006644A1 (en) * 2005-07-06 2007-01-11 Alcoa Inc. Continuous web stress distribution measurement sensor
EP3138639B1 (fr) 2015-09-03 2021-03-24 SMS group GmbH Procede de production d'une bande metallique par laminage en continu
DE102015223600A1 (de) 2015-09-03 2017-03-09 Sms Group Gmbh Verfahren zum Herstellen eines metallischen Bandes durch Endloswalzen
EP3168570A1 (fr) * 2015-11-10 2017-05-17 Primetals Technologies France SAS Méthode de mesure de planéité d'un produit métallique et dispositif associé
CN111085549B (zh) * 2019-12-27 2021-05-18 山东钢铁集团日照有限公司 一种自动分段卸张在线检查带钢板形的方法
CN114659435B (zh) * 2022-03-18 2022-11-01 广东嘉元科技股份有限公司 基于耳料的电解铜箔翘曲测试机具及测试方法

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DE2625414C2 (de) * 1976-06-05 1985-10-10 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh, 4100 Duisburg Spannvorrichtung für kontinuierlich durchlaufende Bänder, insbesondere Metallbänder
JPS588458B2 (ja) * 1977-03-30 1983-02-16 株式会社日立製作所 形状検出装置
DE3430034A1 (de) * 1984-08-16 1986-02-27 Mannesmann AG, 4000 Düsseldorf Planheitsregelung an bandwalzgeruesten
SU1219196A1 (ru) * 1984-12-26 1986-03-23 Магнитогорский горно-металлургический институт им.Г.И.Носова Способ автоматического регулировани плоскостности полосы на станах холодной прокатки
US4860212A (en) * 1986-10-08 1989-08-22 Kabushiki Kaisha Kobe Seiko Sho Rolled strip shape detecting device with high accuracy
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JPH0523723A (ja) * 1991-07-24 1993-02-02 Toshiba Corp 平坦度測定装置及びこの平坦度測定装置を用いた連続圧延機の制御装置
US5471307A (en) * 1992-09-21 1995-11-28 Phase Shift Technology, Inc. Sheet flatness measurement system and method
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DE19524729A1 (de) * 1995-07-07 1997-01-16 Sundwiger Eisen Maschinen Verfahren und Vorrichtung zum Walzen von Bändern mit über ihrer Breite ungleichförmige Dicken- und/oder Längenverteilung
DE19719994B4 (de) * 1997-05-13 2005-01-05 Bwg Bergwerk- Und Walzwerk-Maschinenbau Gmbh Verfahren zur Beeinflussung der Spannungsverteilung in Metallbändern oder -tafeln aus insbesondere nichtferromagnetischem Material

Also Published As

Publication number Publication date
CA2283192A1 (fr) 2000-03-24
EP0988904A2 (fr) 2000-03-29
CA2283192C (fr) 2003-12-30
DE59908627D1 (de) 2004-04-01
ES2212429T3 (es) 2004-07-16
EP0988904A3 (fr) 2003-01-22
ZA995849B (en) 2000-04-04
ATE260151T1 (de) 2004-03-15
DE19843899C1 (de) 2000-05-04
US6164104A (en) 2000-12-26

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