Regular Article

Inertia matching of CNC cycloidal gear form grinding machine servo system

¹ School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, PR China
² Advanced manufacturing of mechanical equipment Henan Collaborative Innovation Center, Henan University of Science and Technology, Luoyang, Henan 471003, PR China
³ First Tractor Company Limited, Luoyang, Henan 471004, PR China
⁴ Zhong Bang Superhard tools Co. Ltd, Zhengzhou, Henan 450001, PR China

^* e-mail: 9903437@haust.edu.cn

Received: 9 September 2022
Accepted: 14 June 2023

Abstract

Reasonable ratio between the load inertia and servo motor inertia plays a decisive role for the dynamic performance and stability of the servo system, as well as the machining accuracy of the whole CNC machine. In order to improve the control performance and contour machining accuracy of the servo system of the CNC cycloidal gear form grinding machine, an optimization design method of the inertia matching for the CNC cycloidal gear form grinding machine servo system is proposed. The two-mass servo driving closed-loop PID control system is constructed, the influence of the different inertia ratios on the dynamic performance and contour errors of the servo system are deeply analyzed, and the inertia ratio is optimized to satisfied with the servo system performance requirements. Finally, the feasibility and practicability of the optimization design method of inertia matching are verified through the inertia ratio optimization grinding experiments of the cycloid gear in the CNC gear form grinding machine. This inertia matching optimization design method provides a valuable reference for the further design of CNC machine servo system.