Abstract:In order to improve the machining efficiency of ultrasonic milling, the easiest and most effective approach was started with the improvement of tool design. The main objective of this research was to utilize rotary ultrasonic machining (RUM’s) effectiveness in removing brittle materials to extend the applications of this independent, innovative manufacturing method (self-driving rotary ultrasonic machining), and to experimentally investigate its milling application on brittle materials. The designed tool was used in the conjunction with previously established RUM machine tools, and glass was selected as workpiece for experiments. The interrelationship between feed rate and depth of cut was discussed. By measuring the surface roughness of workpiece, the overall efficacy of utilizing RUM for milling was evaluated and presented. Ultrasonic assisted milling results in the reduction of milling resistance, which leads to a greater process rate.

Key words: rotary ultrasonic; ultrasonic assisted milling; brittle material