The simulation and experiment result indicate that the dual pole tool weakens the electric field at the side wall of the machined hole and hence leads to the reduction of hole taper and the improvement of the machining accuracy 模擬計算和加工試驗表明,輔助陽極可以顯著減弱孔側(cè)面間隙區(qū)域的電場強(qiáng)度,從而有效地抑制發(fā)生在側(cè)壁的雜散腐蝕,減小孔錐度,提高加工精度。