Abstract:A motion control system of electric spark block anticopy machining is designed, and feasible strategy for data acquisition and motion control also is proposed. The motion control system was developed by LabView Software, which mainly includes an initialization module, a crude tool setting module, a precise tool setting module, a process control module and a coordinate real-time indication module. Experiments on electric spark block anti-copy machining of tungsten carbide tool were carried out by using the motion control system. Orthogonal experimental results are obtained: the material removal rate increases first and then decreases with the increase of the pulse width, thus the pulse width has an optimum value. On the one hand, the energy is not enough when the pulse width is small; the arc discharge is easily generated when the pulse width is large; they are all influence the material removal rate. The material removal rate increases with the multiple of pulse relative to the pulse interval, spindle speed and feed rate. Large enough the pulse and spindle speed, which is contributed to the deionization of working fluid and removal the processing debris in the electrical discharge machining area. Under the premise of effective removal of materials, the higher the feed rate, the faster is the material removal.