| 摘要 |
<p>PURPOSE: To surely prevent leaving ungrinding part over the whole in the length direction of roll barrel part. CONSTITUTION: At the time of grinding a rolling roll, the degree (a-b-c) of contour that is difference between the amount (a-b) of crown that is difference between a diameter (a) of the barrel part in an arbitary position of the barrel part and the diameter (b) of an end face of the barrel part, and the target amount (c) of crown as the target of grinding is calculated from the diameters at plural points in the barrel part measured befor grinding. The value A in the middle part of the barrel part, the min. value B within the sheet passing range at the previous time and the min. value C in the entire length of the barrel part are selected from among the calculated degrees of contour before grinding in plural points and the larger value of the (A-C) and the (A-B+D) taking the reference amount D of grinding into consideration is taken as the amount of grinding in the middle part of the barrel part.</p> |
