Abstract
Rotary cutting using a milling spindle on the multitasking lathe is expected to achieve high speed and high efficiency machining of high-temperature alloys for aerospace industries. This paper discusses effects of cutting speed and the rotating speed of the circular tool on the cutting point temperature and tool surface temperature. And also the effect of the groove type chip breaker for the machining of Incone1718 is discussed. It is shown that the cutting point temperature is kept rather low during the rotary cutting comparing with the conventional cutting. And the chip breaker works at the higher cutting speed of 500m/min.
