While wring tool radius eage to cut, it is complicated in the calculation oftool wear volume and tool wear length on its flank.However,the wear resistence of toolis mainly judged from them.

• 在刀具圆弧刃切削加工时,刀具的体积磨损量和后刀面磨损量的计算是一个复杂的球面三角问题,而这两个参数恰恰是衡量刀具耐磨损性能的重要指标。