A Flexible Controll System of Precision Grinding of Ladder Shaft Based PLC

According to the process of longitudinal grinding of ladder shaft , a high-speed grinder system was designed that was controlled by PLC,and electric spindle was used as high-speed spindle unit. The electric spindle have High precision Hot-Isostatic pressed Silicon Niride ceramic ball bearing.Ball-center has been used to support workpiece to carry out the on-line measurment of roundness error. With applying the function of PLC's E point and home return , the flexible controll of grinding of ladder was come ture. It was proved by practice that it was good scheme for its high precision and efficient and flexible sufficently.