中文摘要：

电极做周期性抬刀运动能够降低加工区域内的电蚀产物浓度，进而提高有效放电率和加工稳定性。为研究抬刀运动对间隙中电蚀产物浓度等的影响，选用不同的抬刀参数进行窄槽加工试验与分析；采用计算流体动力学方法（Computationalfluiddynamics，CFD）对高速抬刀和普通抬刀运动分别进行仿真模拟，探讨二者对加工间隙中电蚀产物浓度的不同影响。模拟结果为进一步理解抬刀运动对加工性能的影响提供重要的参考。

英文摘要：

In electrical discharge machining, the periodic electrode jump motion improves effective discharge rate and machining stability by reducing debris concentration in the machining gap. In order to explore its effect on debris concentration, narrow slot machining experiments with different speeds of electrode jump motions are conducted and analyzed; the high-speed and normal-speed jump motions are simulated based on computational fluid dynamics and their effects on debris concentration are analyzed accordingly. The simulation provides an important reference for understanding the jump motion＇s effect on machining performance.