This paper presents a method of transformation of the screw vacuum pump rotor （SVPR） profile in different sections. Corresponding formulas and transformation steps are given in detail. Based on a rotor of certain profile and geometric parameters, the transformation calculation is carried out as an example between the transverse and longitudinal sections. A real rotor of the same profile and geometric parameters is fabricated and measured. The result proves the suggested transformation method works. The method provides a theoretical support to get coordinates of rotor profile in certain section quickly, and brings convenience for the rotor machining. Furthermore, it can also provide a potential new design method of the rotor with good machinability.

提出了螺杆真空泵转子（SVPR）剖面不同截面的变换方法。详细给出了相应的公式和转换步骤。以具有一定外形和几何参数的转子为例，进行横断面与纵断面之间的变换计算。制造和测量具有相同轮廓和几何参数的真实转子。结果证明建议的转换方法有效。该方法为快速获取某截面转子轮廓坐标提供了理论支持，为转子加工带来了方便。此外，它还可以为具有良好机械加工性的转子提供一种潜在的新设计方法。