分子泵动叶轮和芯轴的装配力计算

Calculation of the assembly force between molecular pump impeller and spindle

针对涡轮分子泵动叶轮和芯轴过盈装配问题,采用压力装配方法进行装配并对过程进行力学分析,建立了芯轴压装力和压入位移之间的函数关系,并利用ANSYS WORKBENCH软件,对装配过程压装力进行了仿真分析和实验验证。理论计算的结果、仿真分析以及实验验证的结果吻合良好。结果表明,压装力和压入位移之间的关系为成正比的线性关系,压装对动叶轮的叶片性能影响很小。装配力的分析对指导动叶轮装配具有一定的参考意义。

Press assembly method was directly used to solve the problem of the interference assembly between molecular pump impeller and spindle. The indentation load-depth function was built by the mechanical analysis of the assembly process. The simulation analysis and experiment on the assembly force were carried out to obtain the indentation load-depth curve using the ANSYS WORKBENCH. The simulation and experiment results correspond to the theoretical calculation. The result shows that the load is in direct proportion to the depth. Press assembly has directly little influence on the vanes. The research can be used as a reference for molecular pump impeller and spindle assembly.