Tool Life Detecting System using Damage Sensor Integrated Insert (4th report) Inprovement System for High Speed Rotating Cutter using Mutual Induction

Abstract

A tool life detecting system using damage sensor integrated insert for face milling cutter was developed. The system had two resonance circuits. One is a series circuit that consisted of a coil, a capacitor, and an insert in a milling cutter arbor, and the other circuit in a detecting unit. The impedance of the coil in the detecting unit corresponds to substances facing to the coil such as steel part of the arbor, drive keys, and the coil of the circuit in the arbor. The system could detct the signal when the sensor pattern is damaged at the rotational speed of the abor up to 6000 rpm.