A Comparative Investigation of Drilling and Milling Micro Holes Using Micro-EDM

Micro Electrical Discharge Machining (micro-EDM), is one of the most important technologies for the machining of difficult-to-cut materials, and it can be considered as one of the most promising manufacturing process for fabricating micro holes. Micro-EDM is suitable for machining micro holes, while it is still hard to machining holes with high depth. The study will make a research on drilling and milling holes using micro-EDM, the milling process shows better performance especially for the holes with high depth to diameter ratio; while drilling process could gain higher processing speed and better geometrical properties of the micro-holes.