円筒形回転切削工具の切削温度と工具摩耗特性

Abstract

The investigation of cutting temperature and tool wear characteristics of the rotary cutting tool is important to perform its machinerbility analysis. In this paper, cutting temperature is measured by a new temperature measuring equipment. A garter spring devise is used pik up the output signals from thermocouple wires. The tool wear characteristics is also examined. The following conclusions are obtained :1) The cycle of hearting and cooling in cutting temperature due to tip rotation is considerably large. The maximum temperature of the rotating tip is extreamly lower than that of the fixed tip. The differences in cutting temperature are mainly arisen by the increase in cooling effect due to tip rotation and the difference in cutting mechanics.2) The wear of the rotary cutting tool initiate at the corner of the cutting edge and the cutting edge is rounded off as the wear increases. The wear rate of the rotary cutting tool is very small and the tool life increases considerably even in cutting of the Titanium alloy, which is one of refractory materials.