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本发明是通过检测切削面上反射光的输出特性的变化来检测刀头损坏情况的方法。如图所示,相对用刀具1切削的切削面2,垂直放置由入射纤维束3a和接收纤维束3b组成的光导纤维3(β=0°)从入射纤维束3a的另一端光源4发出的光,通过3a投射到切削面2上。用光电元件5通过3b接收切削面上的反射光,其强度随着切削面的光洁度而变化,即随着光洁度的下降,可得到单一而且快速下降的光电输出信号Ⅰ_o。
The present invention is a method of detecting the tip damage by detecting the change of the output characteristics of the reflected light on the cutting surface. As shown in the figure, an optical fiber 3 (β = 0 °) composed of an incident fiber bundle 3 a and a receiving fiber bundle 3 b is vertically placed from the other end light source 4 of the incident fiber bundle 3 a with respect to the cutting face 2 cut with the cutter 1 Light, projected onto the cutting face 2 through 3a. The photoelectric element 5 receives the reflected light from the cutting surface through 3b, the intensity of which changes with the smoothness of the cutting surface, that is, the single and rapidly falling photoelectric output signal I_o can be obtained as the smoothness decreases.