DE2011276A1 - Crop end measurement during rolling of rol-ling stock - Google Patents

Crop end measurement during rolling of rol-ling stock

Info

Publication number
DE2011276A1
DE2011276A1 DE19702011276 DE2011276A DE2011276A1 DE 2011276 A1 DE2011276 A1 DE 2011276A1 DE 19702011276 DE19702011276 DE 19702011276 DE 2011276 A DE2011276 A DE 2011276A DE 2011276 A1 DE2011276 A1 DE 2011276A1
Authority
DE
Germany
Prior art keywords
width
stock
crop
measuring device
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.)
Pending
Application number
DE19702011276
Other languages
German (de)
Inventor
Reinhard Dipl.-Phys. Dr.; Höringklee Manfred; Warndorf Dietmar; Müller Klaus Peter; 1000 Berlin Blaser
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DE19702011276 priority Critical patent/DE2011276A1/en
Publication of DE2011276A1 publication Critical patent/DE2011276A1/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B38/00Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/04Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00Measuring arrangements characterised by the use of optical techniques
    • G01B11/02Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/04Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G01B11/046Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving for measuring width
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B15/00Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0007Cutting or shearing the product
    • B21B2015/0014Cutting or shearing the product transversely to the rolling direction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/72Rear end control; Front end control

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Control Of Metal Rolling (AREA)

Abstract

The crop can easily be distinguished from its surroundings due to its brightness. A measured value, representing the complete width of the crop, is formed from two part-width measurements, which are determined photo-electronically using a first width measuring unit. A second unit, positioned at a constant distance from the first one, produces a second measured value, and both are supplied to a comparison circuit. If the values are the same, the circuit transmits a signal to the switching unit, to start the crop cutting.

Description

Schopfbreitenmessung Die Erfindung bezieht sich auf eine Anordnung zur Bestimmung des Endes eines Schopfes in einem Walzwerk. Crop width measurement The invention relates to an arrangement for determining the end of a crop in a rolling mill.

Der beim Walzvorgang durch ungleichförmige Verformungsvorgänge entstehende Schopf kann nach einem vorgeschlagenen Verfahren festgestellt und die Form und die Lage des Schopfes bestimmt werden. Bei dem Verfahren wird zur Erkennung eines Schopfes ein der Gesamtbreite des Schopfes entsprechender Meßwert (Istwert), welcher fotoelektronisch mittels einer Breitenmeßeinrichtung gebildet wird, mit einer Bezugsspannung, die der von Hand eingestellten Sollbreite des Bandes entspricht, verglichen.The one that occurs during the rolling process as a result of non-uniform deformation processes Schopf can be determined according to a suggested method and the shape and the Position of the forelock can be determined. The method is used to identify a forelock a measured value (actual value) corresponding to the total width of the tuft, which is photoelectronic is formed by means of a width measuring device, with a reference voltage which corresponds to the manually set nominal width of the belt.

Aufgabe der Erfindung ist es nun, eine Anordnung zur Bestimmung des Endes eines hinsichtlich seiner Helligkeit, von seiner Umgebung merklich abhebenden, beim Walzen von Walzgut auftretenden Schopfes anzugeben, bei der die Sollbbeitenoinstellung von-Hand entfällt. Gemäß der Erfindung wird die Aufgabe dadurch gelöst, daß ein mittels einer ersten Breltenmeßeinrichtung in bekannter Weise aus zwei fotoelektronisch ermittelten Teilbreiten gebildeter, die Gesamtbreite des Schopfes darstellender Meßwert mit dem Meßwert einer der ersten Breitenmeßeinrichtung in einem konstanten Abstand angeordneten zweiten Breitenmeßeinrichtung einer Vergleichsschaltung zugeführt werden, die bei Gleichheit der Meßwerte ein Signal zur Einleitung des Schopfschnittes an die Schalteinrichtung abgibt.The object of the invention is now to provide an arrangement for determining the At the end of one that clearly stands out from its surroundings in terms of its brightness, when rolling the rolled material to indicate the cropping that occurs at which the target working position is set by-hand is not required. According to the invention the task becomes thereby solved that one by means of a first Brelten measuring device in a known manner two photoelectronically determined partial widths formed, the total width of the tuft representative measured value with the measured value of one of the first width measuring devices in a constant distance arranged second width measuring device of a comparison circuit are supplied which, if the measured values are equal, a signal to initiate the Gives crop cut to the switching device.

Die Erfindung wird im folgenden in der Figur an Hand eines Ausführungsbeispieles näher erläutert: Auf jeder Seite des abzutastenden Walzgutes befinden sich je ein Drehstrahltaster A und B mit je zwei Meßsystemen 1 und 2 bzw. 1' und 2'. Das Meßsystem 1 ist mit dem Meßsystem 1' gekoppelt und bildet eine erste Breitenmeßeinrichtung, welche die Breite des Bandes entlang einer Meßlinie a bestimmt. Das Meßsystem 2 ist mit dem Meßsystem 2' gekoppelt und bildet eine zweite Breitenmeßeinrichtung, welche die Breite des Bandes entlang einer Meßlinie b bestimmt. Es können aber auch statt je eines Drehstrahltasters mit je 2 Meßsystemen vier getrennte Drehstrahltaster mit je 1 Meßsystem verwendet werden. Der Ausgang der ersten Breitenmeßeinrichtung führt über. einen Drehverstärker 3 zu einem Summierpunkt 4.The invention is illustrated below in the figure on the basis of an exemplary embodiment explained in more detail: There is one on each side of the rolling stock to be scanned Rotary beam scanner A and B each with two measuring systems 1 and 2 or 1 'and 2'. The measuring system 1 is coupled to the measuring system 1 'and forms a first width measuring device, which determines the width of the tape along a measuring line a. The measuring system 2 is coupled to the measuring system 2 'and forms a second width measuring device, which determines the width of the tape along a measuring line b. But it can also instead of one rotary beam scanner each with 2 measuring systems, four separate rotary beam scanner can be used with 1 measuring system each. The output of the first width measuring device leads over. a rotary amplifier 3 to a summing point 4.

Der Ausgang der zweiten Breitenmeßeinrichtung ist ebenfalls mit dem Summierpunkt 4 verbunden. An dem Summierpunkt 4 ist der Eingang einer Vergleichsschaltung 5 angeschlossen, an deren Ausgang eine Schalteinrichtung 6 liegt. Die Wirkungsweise der Anordnung ist folgende: Die zu der ersten Breitenmeßeinrichtung zusammengefaßten Meßsysteme 1 und 1' tasten entlang der Meßlinie a das sich in Pfeilrichtung bewegende Walzgut 7 jeweils von der Mittellinie eines Rollganges bis zur jeweiligen Kante des Walzgutes 7 ab. Die von den Meßsystemen 1 und 1' gelieferten Spannungen, welche den Abständen von der Mittellinie des Rollganges bis zur jeweiligen Kantenlage des Walzgutes 7 entsprechen, werden innerhalb des ersten Breitenmeßgerätes summiert. Die Summenspannung, die am Ausgang des ersten Breitenmeßgerätes anliegt, stellt die augenblickliche Breite. des Walzgutes 7 unter der Meßlinie a dar. Sie wird mittels des Drehverstärkers 3 umgepolt und am Summierpunkt 4 der Summenspannung der zweiten Breitenmeßeinrichtung, welche die Breite des Walzgutes entlang der Meßlinie b angibt, entgegengeschaltet. Damit wird die gemessene Breiteres Walzgutes an der Meßlinie a als Sollwert aufgefaßt und mit dem Istwert, d. h. der Breite des Walzgutes an der Meßlinie b, in der Vergleichsschaltung 5 verglichen. Beim Vorliegen eines Schopfes spricht wegen der vorhandenen Differenz zwischen Soll und Istwert die Vergleichsschaltung nicht an. Entspricht die auf der Meßspur b gemessene Bandbreite dem Sollwert, ist das Ausgangssignal der Vergleichsschaltung 5 derart, daß an die Schalteinrichtung 6 ein Signal zur Einleitung des Schopfschnittes ausgegeben wird. Es ist aber auch möglich und es liegt im Rahmen der Erfindung, daß die Yon der zweiten Breitenmeßeinrichtung entlang der Meßlinie b gemessene Breite als Sollwert aufgefaßt und mit der von der ersten Breitenmeßeinrichtung entlang der Meßlinie a gemessenen Istbreite-verglichen wird, wenn sich das Walzgut entgegen der in der Figur dargestellten Pfeilrichtung bewegt.The output of the second width measuring device is also with the Summing point 4 connected. At the summing point 4 is the input of a comparison circuit 5 connected, at the output of which a switching device 6 is located. The mode of action the arrangement is as follows: The combined to form the first width measuring device Measuring systems 1 and 1 'scan along measuring line a that which is moving in the direction of the arrow Rolled stock 7 from the center line of a roller table to the respective edge of the rolled stock 7 from. The ones supplied by the measuring systems 1 and 1 ' Tensions that correspond to the distances from the center line of the roller table to the respective Edge position of the rolling stock 7 correspond to within the first width measuring device summed up. The total voltage that is present at the output of the first width measuring device, represents the current width. of the rolling stock 7 under the measuring line a. You polarity is reversed by means of the rotary amplifier 3 and the sum voltage at the summing point 4 the second width measuring device, which measures the width of the rolling stock along the measuring line b indicates switched in the opposite direction. This means that the measured wider rolling stock is at the Measurement line a understood as a nominal value and with the actual value, d. H. the width of the rolled material at the measuring line b, compared in the comparison circuit 5. If there is one Schopfes speaks the comparison circuit because of the difference between the setpoint and actual value not on. If the bandwidth measured on measuring track b corresponds to the nominal value, is the output signal of the comparison circuit 5 such that to the switching device 6 a signal to initiate the crop cut is output. It is also possible and it is within the scope of the invention that the Yon of the second width measuring device The width measured along the measuring line b is taken as the nominal value and is compared with that of the first width measuring device along the measuring line a measured actual width-compared when the rolling stock is opposite to the direction of the arrow shown in the figure emotional.

Claims (1)

Patentans~pruch:Claim: Anordnung zur Bestimmung des Endes eines hinsichtlich seiner Helligkeit von seiner Umgebung merklich abhebenden, beim Walzen von Walzgut auftretenden Schopfes, dadurch gekennzeichnet, daß ein mittels einer ersten Breitenmeßeinrichtung in bekannter Weise aus zwei fotoelektronisch ermittelten Teilbreiten gebildeter, die Gesamtbreite des Schopfes darstellender Meßwert mit dem Meßwert einer der ersten Breitenmeßeinrichtung in einem konstanten Abstand angeordneten zweiten Breitenmeßeinrichtung einer Vergleichsschaltung (5) zugeführt werden, die bei Gleichheit der Meßwerte ein Signal zur Einleitung des Schopfschnittes an die Schalteinrichtung (6) ausgibt.Arrangement for determining the end of a with regard to its brightness noticeably different from its surroundings, occurring when rolling rolling stock, characterized in that a known by means of a first width measuring device Way formed from two photoelectronically determined sections, the total width of the head representing measured value with the measured value of one of the first width measuring devices at a constant distance arranged second width measuring device of a comparison circuit (5) are supplied which, if the measured values are the same, a signal for initiation of the crop cut outputs to the switching device (6).
DE19702011276 1970-03-05 1970-03-05 Crop end measurement during rolling of rol-ling stock Pending DE2011276A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19702011276 DE2011276A1 (en) 1970-03-05 1970-03-05 Crop end measurement during rolling of rol-ling stock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702011276 DE2011276A1 (en) 1970-03-05 1970-03-05 Crop end measurement during rolling of rol-ling stock

Publications (1)

Publication Number Publication Date
DE2011276A1 true DE2011276A1 (en) 1971-09-23

Family

ID=5764665

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702011276 Pending DE2011276A1 (en) 1970-03-05 1970-03-05 Crop end measurement during rolling of rol-ling stock

Country Status (1)

Country Link
DE (1) DE2011276A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0068731A2 (en) * 1981-06-19 1983-01-05 European Electronic Systems Limited Crop shear control
EP0084646A1 (en) * 1981-12-24 1983-08-03 Thyssen Aktiengesellschaft vorm. August Thyssen-Hütte Method of cropping the end of luminescent rolling stock, in particular metal strips and device for carrying out the method
DE3834110A1 (en) * 1988-10-07 1990-04-12 Truetzschler & Co METHOD AND DEVICE FOR DETECTING THE MOVEMENT OF TEXTILE FIBER TAPES, e.g. CARD TAPES

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0068731A2 (en) * 1981-06-19 1983-01-05 European Electronic Systems Limited Crop shear control
EP0068731A3 (en) * 1981-06-19 1983-07-20 European Electronic Systems Limited Crop shear control
EP0084646A1 (en) * 1981-12-24 1983-08-03 Thyssen Aktiengesellschaft vorm. August Thyssen-Hütte Method of cropping the end of luminescent rolling stock, in particular metal strips and device for carrying out the method
DE3834110A1 (en) * 1988-10-07 1990-04-12 Truetzschler & Co METHOD AND DEVICE FOR DETECTING THE MOVEMENT OF TEXTILE FIBER TAPES, e.g. CARD TAPES
US4982477A (en) * 1988-10-07 1991-01-08 Trutzschler Gmbh & Co. Kg Method and apparatus for detecting sliver feed

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