Piezoelectric actuator based active error compensation of precision machining

Efforts to refine a current cutting tool system for active error compensation with the aid of ultrasonic vibration cutting technique are described. Two piezoelectric actuators are integrated in the cutting tool, one of which is for active error compensation and the other for ultrasonic vibration cutting. The principles of active compensation for cutting error and ultrasonic vibration cutting are first explained. The experimentally studied characteristics of the piezoelectric actuators and the development of the integrated cutting tool are described. Experimental cutting results have shown that the cutting tool developed is satisfactory in terms of improved roundness and surface roughness of machined workpieces.