整体叶盘, 电解加工, 轨迹, 切向恒速

For guaranteeing the stability of blisk twisty tunnel in ECM, a process mode was presented,where the tangential velocity of cathode relative to workpiece kept steady in the whole process. A mathematics model of the movement of cathode and workpiece was established,and the velocity matching mode of cathode and workpiece was analyzed. Keeping the unidirectional speed of cathode steady in the whole process, the machining gap and current fluctuate dramatically，which will lead to the process is unstably and the machining accuracy decreases in certain extent. That the tangential velocity of cathode relative to workpiece maintains constant contributes the machining gap keeps identical in the whole process and ECM of blisk twisty tunnel is carried out smoothly. For conforming the rationality of the movement mode，the experimental investigations were carried out. The results show that the short circuit happens with the same linear speed. However, the process finished stably with the constant tangential velocity and the machining accuracy is better than that with the former mode. 