本文介绍了一种用于检测铣削过程中切削扭矩的传感器的研制，并提出了预测刀具磨损和检测刀具故障的方法。该传感器利用磁致伸缩效应检测切削扭矩。给出了在不受轴向力和径向力影响的情况下检测切削扭矩的具体结构，并开发了具有该结构的扭矩传感器。刀具磨损根据最初定义的特定切削力进行预测，该切削力来自切削面积和切削扭矩。 为了推导切削面积，建立了铣削过程的数学模型。通过观察每个切削刃产生的切削扭矩峰值来检测刀具故障。

In this paper, development of a sensor for detecting cutting torque in milling processes is described, and methods for predicting tool wear and detecting tool failure are proposed. The developed sensor detects cutting torque by using magnetostrictive effect. The specific structure to detect cutting torque without influence of axial force and radial force is given and the torque sensor with the proposed structure is developed. Tool wear is predicted according to originally defined specific cutting force that is derived from cutting area and cutting torque. In order to derive cutting area, a mathematical model for milling processes is constructed. Tool failure is detected by observing the peak value of cutting torque caused by each cutting edge.