中文摘要：

拐角高速铣削时,切削方向突变和径向切深骤增会导致切削力和振动突然增加。为了避免这种情况,本文以限制径向切深为目标,对拐角刀具轨迹进行优化。首先,通过重新设计圆弧插补始末点位置,对传统圆弧插补模型进行优化。第二,将循环余摆线模型引入到拐角残余清除当中,对循环余摆线模型中刀具半径、摆线半径和刀具步长之间的数学关系进行分析,推导了限制径向切深的数学方法。最后,将优化的刀具路径策略与Cimatron策略进行对比加工试验,结果表明：优化的刀具路径加工效率略低于Cimatron策略,但优化策略在加工稳定性和加工质量上都明显优于Cimatron策略。

英文摘要：

In high speed milling at corner,cutting direction mutations and increase in radial cutting depth will lead to sharp increase in cutting force and machining vibration.To avoid this phenomenon,tool path is optimized by limiting radial depth at corner.First,traditional arc transition is optimized.Then,Circular trochoid model has been used to remove the residual.Mathematical relationship based on radial depth of cutting constrain among tool radius,trochoid radius and tool step length have been analyzed to obtain the appropriate parameters for higher machining quality.Experiments showed that optimized tool paths could obtain weaker process vibration and superior machining quality.