A New Method of Machine Tool Thermal Error Modeling Based on the Finite Element Analysis

摘要

In this paper, a new method was proposed to detect and model the thermal error of machine tools. This method was aimed at two mutually perpendicular direction deformation, and easily detectable deformation was used to fit the deformation in another direction. In order to verify the correctness of the method, a machine center was analyzed at different thermal conditions with finite element analysis method. Furthermore, the thermal error model of the guide rail on the column was established. The simulation results showed that a reasonable mathematical model for thermal error can be established with this method.