在简单介绍监测刀具状态的重要性的基础上，文章从理论上推导了主轴电流与刀具磨损量之间的关系式。
After a brief introduction the importance of tool condition monitoring, the paper derived the relationship between the spindle current and tool wear theoretically.
对自由曲面数控加工中主轴电机电流信号的提取技术进行了分析，指出了霍尔电流传感器是行之有效的方法。
It analyzes the technique of extracting the spindle motor current of the Machining Center, correspondingly, points out that Hall current sensor is a very efficient way.
采用主轴后轴承定位系统，避免主轴花键间隙造成晃动，制粒机主机电流平稳，延长压模压辊使用寿命。
The position system by back bearings of main shaft is adopted to prevent vibration caused by spline and ensures current of main motor stable and extends service life of rollers and dies.
采用主轴后轴承定位系统，避免主轴花键间隙造成晃动，制粒机主机电流平稳，延长压模压辊使用寿命。
The position system by back bearings of main shaft is adopted to prevent vibration caused by spline and ensures current of main motor stable and extends service life of rollers and dies.
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