Apparatus for detecting damages of cutting tools

摘要

A detector for producing an output corresponding to the vibration of a cutting tool or a workpiece worked thereby, a signal processing circuit for obtaining the root mean square value of the output signal from the detector, and a comparator for comparing the output signal from the signal processing circuit with data produced at the time of normal cutting whereby when an abnormal vibration occurs due to the damage of the cutting tool the cutting operation is stopped by using a signal from the comparator.