In the present paper, the results of basic experiments conducted on ultrasonic vibration shaving is described, as a mean of obtaining the smooth surface.
As first step, the cutting mechanism in vibration shaving was investigated, then the shaving was performed by running a cutter in meshing with a work gear supplied the ultrasonic vibration. After shaving, accuracy of gear, surface roughness of gear tooth and noise in running were measured, then these results were compared with those in case of ordinary method.
These results when summarized are as follows.
(1) The cutting direction of shaving cutter on the tooth surface and the rake angle of cutting edge in cutting vary in every moment. And there is the period when tooth surface is not cut, which changes in compliance with the position of tooth surface and the vibration conditions.
(2) The roughness of tooth surface finished by vibration shaving becomes smoother than that by ordinary shaving, therefore the extent of decrease in the noise in running compared with that before shaving is larger than that in the ordinary method.
(3) The accuracy of gear is improved by shaving, but there is no significant difference between ultrasonic vibration shaving and ordinary shaving.