齿槽转矩是由于永磁体和有槽电枢铁心的相互作用产生的,齿槽转矩的变化会引起电机振动与噪声,影响永磁同步电主轴的稳定性.文章提出了一种削弱表贴式永磁同步电主轴齿槽转矩的方法,可以提高数控机床的工作精度.借助ANSYS有限元分析软件,建立了表贴式永磁同步电主轴的有限元模型,通过优化永磁体削角参数减小了永磁同步电主轴的齿槽转矩.研究表明:对永磁体进行三角形削角,可有效减小齿槽转矩脉动.%Cogging torque results from the interaction of the permanent magnet and sulcate armature core. The change of the cogging torque generates the vibration and noise and affects the stability of Permanent Magnet Synchronous Electrical Spindle ( PMSES) . This paper presents a method that weakens the cogging torque of PMSES and improves the precision of NC machine tool. The finite element model of PMSES is es-tablished and the electromagnetic characteristics of the PMSES is analyzed by ANSYS finite element analysis software. By optimizing the cutting angle parameter reduces the permanent magnet synchronous permanent magnet motor spindle cogging torque. Studies have shown that: the permanent magnets triangular cham-fered, can effectively reduce the cogging torque ripple.
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