Patent ID: 9050638
Filing Date: 2015-06-09
Classification: B21B,B21D

Abstract:
1. A method of driving a strip material processing apparatus, the method comprising: moving a strip material through a first workroll of a plurality of exit workrolls and a second workroll from a plurality of entry workrolls, the exit workrolls positioned adjacent an exit of the processing apparatus and the entry workrolls positioned adjacent an entry of the processing apparatus; driving the first workroll via a first drive system and driving the second workroll via a second drive system separate from the first drive system; controlling the first drive system based on a first command reference value; determining a first speed or a first torque of the first drive system when the first drive system operates at the first command reference value; determining a second command reference value based on the first speed or the first torque of the first drive system to cause a torque mismatch between the first and second drive systems; and operating the second drive system based on the second command reference value.