| 摘要 |
<p>PROBLEM TO BE SOLVED: To ensure the thickness accuracy by setting the roll gap when the feed of a stock to be rolled is stopped to be larger than the roll gap when the stock to be rolled is fed to prevent generation of roll marks. SOLUTION: The command signal S7 of a roll gap commanding unit 14, the output signals S8, S9 of a roll position sensor 15, the output signals S2, S3 of roll speed sensors 6, 7, the feed stop signal S5 to be outputted by a control device of a cutting machine, etc. are inputted in a roll gap control device. When the feed stop signal S5 is off, the control quantity corrected corresponding to the difference between the correction value added to the roll gap command value indicated by the command signal S7 and the detected value by a roll gap detector is commanded to a roll gap control device 12. The roll gap when the feed stop signal S5 is on is increased compared with that when the feed stop signal S5 is off. When the roll speed, the rolling load, the sheet thickness, the feed stop time are not substantially changed, correction may be achieved by the specified quantity necessary for preventing generation of roll marks.</p> |
