ro - ru grinding control manner and its device

摘要

PURPOSE:To make a roll grindable with the desired accuracy even during strip rolling, by grinding it after controlling stock removal per unit time in the roll to be constant, and finishing the grinding at that point that time from a grinding start accords with the time required for securing the specified stock removal. CONSTITUTION:Peripheral velocity of a roll 2 during grinding operations, for example, a rolling speed is detected and calculated, and on the basis of this operation value, pressing force of a grinding wheel 1 to the roll 2 is controlled by a pressure control mechanism 9 so as to give an inversely proportional relationship to an interval between stock removal per rotation in the roll 2 and the roll peripheral velocity. With this relationship, roll grinding is carried out so as to cause the stock removal per unit time in the roll 2 to become constant. And, the pressure control mechanism 9 releases the pressing force of the grinding wheel 1 by a hydraulic cylinder 5 at a time when time from a grinding start by a pressure detecting mechanism 8 accords with the time required for securing the specified stock removal, thus grinding is over. Therefore, high processing control is no longer required, and even in such an on-line that speed varies, the roll is grindable so accurately.