工作機械用スピンドル同期モータの開発設計に関する研究

抄録

We have developed direct drive motors for rotary axes of machine tools by the quality engineering and FEM analysis of electro-magnetic field. As a result, findings on how to design a large-torque and low-torque-ripple motor is obtained. By using findings, we designed a motor for a spindle axis of a machine tool, and moreover we considered how to design a high-speed motor with higher torque at low speeds than induction motors. In this paper, by comparing a newly designed motor for a spindle axis to already developed motors for rotary axes, we attempt to consider motor characteristics and design methods.