Abstract
In this study, we investigate an ultrasonic–vibration–assisted end milling technique for improving the milling accuracy of products using small–diameter and high–aspect–ratio ball–nosed end mills. In our experiments, several mold cavity shapes and fine patterns are machined by the above–mentioned ultrasonic milling technique on copper workpieces used as electrodes for electrical–discharge machining. As a result, we clarify that the improved cutting performance parameters, such as a reduced burr height, a high geometrical precision and a small surface roughness, are obtained by the proposed ultrasonic milling technique.
