Electrical Servo Screwdown Control System on Cold Rolling Mill for Traveler Substrate

A novel roll position control method, based on electrical screw down, is proposed to solve the problems such as the complicated operation and poor positioning precision of the manual screw down on the cold rolling mill for traveler substrate. The new system adopts PLC as the main controller, servo driving system as the actuator, and realizes the flexible adjustment of the roll gap by the proper programming of PLC and the touch screen. The construction and operation principle of position control system, the hardware realization and the software design are detailedly introduced. Through engineering practice proves that the system has 0.001mm of the high control accuracy, suiting to requirements of the thickness of 0.4mm-2mm of the traveler substrate.