3367 Development of tool edge temperature measurement method in wet cutting : Application for CBN and Poly Crystalline Diamond tools

Abstract

In this paper, the method of tool edge temperature using two-color pyrometer in wet cutting is proposed. Using this method, the high pressure air supplied from small hole in which an optical fiber is inserted prevents coolant from adhering to the optical fiber edge and makes temperature measuring possible. In this way, the temperature of CBN and PCD tool edge is measured in wet cutting of Ti-6Al-4V. By cutting fluid supply, PCD tool edge temperature decreases greatly. For example, when cutting speed is at 300m/min, PCD tool edge temperature decreases by 350℃, while CBN tool edge temperature decreases by only 70℃.