SHAPE CONTROLLING METHOD FOR CLUSTER ROLLING MILL

SHAPE CONTROLLING METHOD FOR CLUSTER ROLLING MILL

PURPOSE:To make good shape control according to presetting errors and change of rolling force by increasing or decreasing the crown quantity of back up rolls when roll bender force exceeds a rating during feedback control. CONSTITUTION:A reduction leveling servocontrol system 9 and a roll bender ser...

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Bibliographische Detailangaben
Hauptverfasser: TERADO SADAMU, KAWANAMI KATSUSUKE, MIKURIYA TAKASHI, KAMIGOORI RIYUUMA, HAYAMA YASUNOBU, KACHI TAKAYUKI
Format: Patent
Sprache:eng
Schlagworte:
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
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Beschreibung
Zusammenfassung:PURPOSE:To make good shape control according to presetting errors and change of rolling force by increasing or decreasing the crown quantity of back up rolls when roll bender force exceeds a rating during feedback control. CONSTITUTION:A reduction leveling servocontrol system 9 and a roll bender servocontrol system 8 make feedback control to make a rolling shape flat in accordance with the signal of a shape detector 10. A signal is generated in a limiter 15a and the signals of prescribed grades are outputted by an integrator 15b and a scale factor element 15c when the command value F of the correction signal exceeds an upper limit value Fu2 or lower limit value Fl2 in the roll bender servocontrol system 8 during the control. Such signal is commanded to a servocontrol system 7 for adjusting the crown of back up rolls to increase or decrease the crown quantity of the back up rolls by which the roll bender force is restored within the rated range.