| 摘要 |
<p>PURPOSE: To provide a method for automatically controlling thickness by which shapes such as an H beam, I beam and channel are rolled at a low cost and with high accuracy in universal rolling. CONSTITUTION: The positions of the barrel parts of horizontal rolls 1, 2 of a universal mill are detected with sensors 8, 13 provided on the ground, the fluctuation of horizontal-roll gap is operated and the opening degree between the horizontal rolls is controlled so that this fluctuation is eliminated. On the other hand, as to also respective vertical rolls 3, 4 on the driving and working sides, the positions of the barrel parts of the vertical rolls or the positions of respective balancing cylinders 12 for the vertical rolls are detected with the sensor 14 provided on the ground, the amount of gap between the vertical rolls and the side faces of the horizontal rolls is calculated and the positions of the respective vertical rolls are controlled so that this fluctuation is eliminated. In this way, the control system becomes a very simple and inexpensive one and very highly accurate automatic thickness control is executed.</p> |
