Condition Monitoring of High-Speed End-Milling of Titanium Alloy

A Consideration to Wear Mechanism of Cutting Tool

Abstract

The purpose of this study is to elucidate wear mechanism of cutting tool in high-speed end-milling of titanium alloy. Cutting tests were carried out to observe state of chips on cutting edge and to measure width of tool wear land, dynamic cutting forces, and hardness of machined surface under some conditions: that is, in dry and with mist of cutting fluid. As a result, it was revealed that surface machined with mist of cutting fluid was harder than surface in dry and minimum cutting force in one cut with mist was larger than in dry. Furthermore, it was also demonstrated that the hardness of machined surface and the minimum cutting force may be related with wear mechanism of cutting tool.