Analysis on the Thermal Error Compensation Model of Direct-drive A/C Bi-rotary Milling Head

摘要

The thermal deformation error that is the biggest error of effecting the machining precision of Direct-drive A/C Bi-rotary Milling Head was narrated in brief. Based on the introduce of the study status on the thermal error compensation techniques of CNC Machine tool, the momentum of thermal deformation of Bi-rotary Milling Head was analyzed. According to the Trigonometric Relations in A/C axis rotation angle of Bi-rotary Milling Head and the momentum of thermal deformation in Bi-rotary Milling Head and X Y Z -axis respectively, a thermal error compensation model was established to make the Machine tool to compensate for thermal errors in X Y Z -axis.