Research on force sensing and micro-feed characteristics of integrated motor spindle

doi:10.16731/j.cnki.1671-3133.2024.08.019

Abstract

Abstract: In order to meet the needs of precise control of the speed,feed distance, and cutting force of the motor spindle in the process of precision machining, an integrated motor spindle with rotation,micro-feed and force sensing functions is proposed by combining the permanent magnet synchronous motor and giant magnetostrictive actuator.In order to verify the structural of the main integrated motor spindle force sensing part,based on the magnetic circuit method and finite element analysis,the relationship between the micro-feed distance of the integrated motor spindle, the induced voltage of the outer coil, and the external load is obtained. Finally,in order to verify the accuracy of the simulation,an integrated motor spindle force sensing and micro-feed test platform is built. The results show that in this magnetic circuit model design,the magnetic flux density of the integrated motor spindle can exceed 0.551 9 T,the uniformity of magnetic flux density is greater than 77.85 %,and the micro feed distance of the distance of the integrated motor spindle can reach 26.5 μm. The induced voltage of the outer coil is inversely related to the external load,and the optimal impressed energizing current of the inner coil is 5 A. The research results show that the design of the integrated motor spindle with force sensing and micro-feed function is reasonable and feasible,which lays a foundation for further research and precise control of the integrated motor spindle.

Key words: integrated motor spindle, permanent magnet synchronous motor, giant magnetostrictive actuator, force sensing, micro-feed

CLC Number:

TH122

YU Caofeng, ZHU Jianhua, NIE Yinan, WEI Zixian, CHEN Zhiquan. Research on force sensing and micro-feed characteristics of integrated motor spindle[J]. Modern Manufacturing Engineering, 2024, 527(8): 152-158.

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