Abstract: Numerical simulations were carried out on ordinary passivation finishing experiments and ultrasonic vibration assisted finishing experiments using EDEM discrete element analysis software. Simulation results provide basis for the proposed ultrasonic vibration finishing system. Using ultrasonic vibration finishing equipment to perform passivation experiments on flat end mill, a large number of experimental studies were carried out by changing the passivation conditions. The surface morphology and the radius of the blunt circle of the milling cutter before and after passivation were observed by scanning electron microscope, the influences of ultrasonic vibration on the passivation efficiency and finishing effectiveness were analyzed. Experimental results show that the passivation efficiency with ultrasonic vibration increases about 26% and the surface topography is greatly improved.

Key words: discrete element analysis, ultrasonic vibration, finishing, passivation experiment

摘要： 采用EDEM离散元分析软件对普通钝化光整实验及带有超声振动辅助光整实验进行数值模拟，仿真结果为超声振动光整加工系统的提出提供了依据。使用超声振动光整设备对平头铣刀进行钝化实验，进行了不同钝化条件下的实验研究。通过扫描电镜观察了钝化前后铣刀的表面形貌及钝圆半径的变化，分析了超声振动光整对钝化效率及效果的影响。实验结果表明，增加了超声振动钝化后的钝化效率提高了约26%，表面形貌得到较大改善。

关键词: 离散元分析, 超声波振动, 光整加工, 钝化实验