螺旋罗茨转子四轴加工刀路规划

Four-axis tool path planning for spiral roots rotor

通过分析螺旋罗茨转子的成型规律,建立了球头刀加工螺旋转子的加工模型,规划了刀具路径,通过等弧长平分法和控制残留高度的等参数法两种方式处理转子端面型线数据点,比较了两种数据点处理优缺点,在此基础上定制了一种规律化的四轴编程模版,采用该模版不需太多编程经验可以快速编制加工程序,从而高效加工螺旋转子,在实际加工中,取得了较好的社会经济效益。

The author established spiral rotor machining model with the ball tool and planned tool path by analyzing forming law of spiral Roots rotor.The data points of rotor＇ s end profile were dealed with by equal arc method and isoparametric method on the control of scallop height.Both advantages and disadvantages were compared with the two methods.On the basis a four-axis ruled programming template was customized,which could let processors lack of experience and technique quickly edit NC programs.Actually,spiral rotors can be efficiently milled,at the same time good economic and social benefits can be achieved.