这会导致主轴利用率低，增加精加工时间，使刀具过载。

This causes inefficient use of the spindle, which increases benchwork finishing time in addition to the number of trips to the tool crib to replace worn, overloaded tooling.

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本文介绍一种用检测主轴电机动率的方法来监测刀具破损的系统。

In this paper, a system for monitoring tool breakage by detecting the power of spindle motor is introduced.

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刀具磨损后仍继续使用，会加大电主轴轴向力，导致轴承受损，而且还会影响雕刻的精度及效果。

Continued to use of tool wear, spindle axial force will be increase, leading to bearing damage, but will also affect the accuracy and effectiveness of engraving.

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