数控加工罗茨鼓风机扭叶转子的几何模型

Geometric Model of Twist Rotor of NC Machining Roots Blower

以罗茨鼓风机扭叶转子的螺旋曲面方程为基础,应用微分几何原理给出了数控加工罗茨鼓风机扭叶转子球面铣刀的参数选择,以及用刀具切削螺旋曲面时相应的步长和行距的定量分析相关的数学模型,最后用实例验证了所供方法和模型的可行性与可靠性。

This paper is based on the helical surface equation of twist rotor of roots blower. The selected parameters of ball-end cutter are deduced by using the differential geometry theory. The corresponding mathematical models of the step length and path intervals of different milling cutters in NC machining of different regions are also presented in this paper. The feasibility and reliability of the supplied method and model are verified in examples.