| 摘要 |
PURPOSE:To control change in thickness measure distribution such as edge drop and crown quantity in width direction to a minimum for securing dimensional accuracy in width direction over the whole length of a plated member by detecting thickness measure distribution in width direction of a plate member to be ground, and controlling grinding pressure, feed speed and height of a pilly roll based on the analyzed result. CONSTITUTION:Thickness measure distribution in width direction (plate crown) of a plate member or a strip member 9 to be ground continuously is detected by detecting devices 12, 14. The detected results are analyzed on an operation unit for inputting the analyzed results into a control unit. An increasing and decreasing quantity in grinding pressure and feeding speed on a belt grinder and a leveling quantity on a pilly roll are controlled based on command from the control unit, and even in a case of change on grinding ability of a grinding belt in elapse of time, change on plate crown such as edge drop and crown quantity is suppressed in a minimum. As a result thereof, dimensional accuracy in width direction can be secured over whole length, and yield of product can be improved while plate crown is made stable over whole length. |
