超音波クーラント援用のTiのマイクロ穴あけ加工

抄録

Demands of micro catheter parts made of titanium (Ti) are increasing in medical devices, because Ti is light, tough, and has low aggression. However, melting point of titanium is high and it is easy to adhere to the cutting tool, and then the tool life is short. In this study, the ultrasonic vibration assisted coolant was applied to cutting in order to reduce the cutting force, to increase preciseness, and to increase the tool life. In the experiments, a microtool made of cBN of Φ 0.3 mm diameter was produced in trial and Ti plate was drilled using the ultrasonic vibration assisted coolant system and the effects of kinematic viscosity coefficient of the coolant on the vibration performance and tool life.