DETECTION OF CUTTING-TOOL FRACTURE BY DUAL SIGNAL MEASUREMENTS

Abstract

Fracture of a cutting tool is one of the most serious problems in machining systems. As a result, several methods have been proposed to detect cutting tool fracture. However. most of these have some problems from the viewpoint of practical application. In this study, the feasibility of using acoustic emission (AE) and cutting force signals for the detection of massive tool breakages as well as small fractures of the cutting tool were investigated, Turning experiments were performed using conventional carbide insert tools under realistic cutting conditions where S45C steel and the heat treated S45C steel were used as workpieces. The signal characteristics of the AE and cutting force components for the fracture of cutting tools were illustrated. The fracture of cutting tools was successfully detected through the analysis of these dual signals in the several types of tool fracture.