中文摘要：

针对陶瓷硬脆材料难加工特性,结合金刚石飞切与超声辅助加工的优点,提出超声辅助金刚石飞切这一新加工工艺,并将其应用于氧化锆陶瓷超精密切削,取得了较好加工效果。在分析了超声辅助金刚石飞切加工的特点基础上,建立其切削模型及切削力模型,搭建了超声辅助金刚石飞切实验平台,进行了氧化锆超声辅助金刚石飞切切削力试验及刀具磨损试验。通过实验对比,探讨超声辅助加工技术对切削力和刀具磨损的影响,分析金刚石飞切加工过程中切削参数（主轴转速、进给量速度、切削深度）对切削力的影响。结果表明,超声辅助金刚石飞切可明显降低切削力,并有效抑制刀具磨损进程。

英文摘要：

The ultrasonic vibration assisted diamond fly cutting（ UAFC） is put forward to deal with the machining of hard brittle materials,on which ultrasonic vibration is introduced into diamond fly cutting,then this composite processing method was applied to ultra-precision machining of zirconia ceramic and the good machining effects had been obtained. The machining characteristics of UAFC were firstly analyzed,and its cutting model and cutting force model were built up,then the experiment platform of UAFC was set up,thus cutting force test and tool wear test during UAFC were performed on the platform,and the effects of ultrasonic vibration parameters and cutting parameters（ spindle speed,feed rate,depth of cut） on the cutting force and tool wear during UAFC were compared with that without the ultrasonic vibration. The experimental results proved that UAFC obviously reduced the cutting force and improved the tool wear.