抄録
In cutting using rotary cutting tool, it is expectable to become low friction since cutting fluid can be supplied near the cutting point. The machining tests of Aluminum alloy using a rotary cutting tool were carried out. As a result, the coefficient of friction between a tool and chips using MQL was smaller than 0.1 when cutting speed ratio Vt/V was 100. And the thrust force and the feed force were very small compared to the principal cutting force. Therefore a new machining method of thin wall was proposed. Thin wall of 0.5mm thickness has been made by using the new machining method with a rotary cutting tool.
