Modal Analysis of CNC Lathe's Spindle Based on Finite Element

With the development of the industry, the requirement of CNC lathe increase very much. To design a lathe, it needs analysis and calculation of the major components, and dynamic performance of the lathe spindle is very important for the performance and accuracy of the lathe. First, modeling of spindle structure are built in this paper. Secondly, modal analysis of spindle are carried out by using ANSYS software. Simulations show that the stiffness of spindle meets the design requirements.