Abstract

For precise micro V-grooving, ultrasonic elliptical vibration cutting (UEVC) is proposed using two parallel piezoelectric actuators, which are energized by sinusoidal voltages with a phase difference of 90 degrees. Experimental setup is composed of stacked PZT actuators, a single crystal diamond cutting tool, and a precision motorized xyz stage. It is found that the chip formed in the process of UEVC is discontinuous because of the periodic contacts and non-contacts occurring between the tool and workpiece. It is experimentally observed that the cutting force in the process of UEVC significantly reduces compared to the ordinary non-vibration cutting. In addition, the creation of burr during UEVC is significantly suppressed, which is attributable to the decrease in the specific cutting energy.

• Keywords: Ultrasonic elliptical vibration cutting(UEVC)(초음파 타원궤적 진동절삭),Piezoelectric actuator(압전소자),Single crystal diamond cutting tool(단결정 다이아몬드 공구),Discontinuous chip(불연속형 칩),Burr(버),Specific cutting energy(비절삭에너지)