in Ultrasonic Elliptical Vibration Cutting

Abstract:Due to the changes on the micro cutting process resulted from ultrasonic elliptical vibration，the surface finish of workpieces can be greatly improved.Based on the analysis of micro process of elliptical vibration cutting，the cutting trajectories at various tilt angles and speed ratios are analytically simulated.The results show that with the increase of the tilt angle from 0° to 90°，the angle of the chatter mark first increases to 45° and then decreases，and the height of the chatter mark increases from 0.38μm to 1.33μm.Besides，with the increase of the speed ratio，the cutting frequency decreases in the same cutting period，and the height of the chatter mark increases rapidly with an increasing change rate.In addition，keeping the long axis of the elliptical trajectory in the cutting direction and reducing the speed ratio can bring about an obvious effect on the height reduction of the chatter mark.