미세심공드릴 가공에 있어서 Be-Cu 재료의 절삭조건에 관한 연구

A Study on Cutting Conditions of the Be-Cu Material in Micro Deep Hole Drilling Operation

Recently micro deep hole drilling is required in the whole industry. However, micro deep hole drilling has still much difficulty because of the lack of drill rigidity and the interruption of chip. We treated a micro deep hole(diameter 0.35mm, depth 3mm) used in a connector jack pin. Therefore, a surface roughness is very important. In this paper, we studied on the variation of the surface roughness for cutting conditions during micro deep hole drilling of Be-Cu material. Most of all, we tried to drill on CNC for the realization of automatization.