| 摘要 |
<p>PURPOSE:To measure the flatness of a rolled stock with high accuracy by measuring the flatness of the rolled stock by a laser light system, in a rolling equipment having a looper roller between stands. CONSTITUTION:By a potentiometer 3c, position information of a looper roller 3a is inputted, and the inclination of the rolled stock between stands 1, 2 and the looper roller 3a is known. A laser beam LB projected to the surface of the rolled stock is projected at a prescribed angle, and scanned in the width direction of the rolled stock, therefore, the reference locus of the laser beam corresponding to the inclination of the roll is calculated in an arithmetic processing unit 8. The result of the arithmetic operation is stored in a memory. On the other hand, if a center elongation or an earing wave exists in the rolled stock which is running, the reflecting position of the laser beam is changed, its actual locus is brought to an image pickup, converted to a video signal and inputted to the arithmetic processing unit 8. The arithmetic processing unit 8 calculates a distance between the reference locus and the actual locus, and also, calculates the center elongation height or the earing wave height by using the inclination angle of the rolling material and an irradiation angle of the laser beam.</p> |
