切削力的大小不但影响刀具磨损的快慢,而且影响加工零件的表面光洁度及精度。切削力又是设计及使用机床、刀具、夹具等以及研究加工过程中的现象的必要数据,因此研究切削力将有助于设计及工艺水平提高,对生产有重要意义。对于一般切削加工,切削力的变化规律的研究已进行了不少的工作,但是精密及超精密加工在航空、航天、宇航以及民用工业产品中 The size of the cutting force not only affects the speed of tool wear, but also affect the surface finish and precision machining parts. Cutting force is also necessary for designing and using machine tools, cutting tools, fixtures and the like and for studying phenomena in the process of machining. Therefore, studying the cutting force will help to improve the design and process level, which is of great significance to the production. For the general cutting, cutting force changes in the law of research has done a lot of work, but the precision and ultra-precision machining in aviation, aerospace, aerospace and civil industrial products