Abstract
In recent years, the need for ceramics products containing micro-features has shown a pronounced and steady growth in several fields of industry application. For the development of micro-hole devices, one of the most important technologies is Micro Electro Discharge Machining (µ-EDM). Micro-EDM can be considered as an ideal process to obtain burr-free micron-size features with high aspect ratios. This work presents an innovative method for the µ-EDM of high aspect ratio (AR =25) micro holes. The investigation focuses on the influence of input parameters and discharge energy on material removal rate (MRR), electrode wear (EW) rate and more over Moreover, an analysis of the geometrical characteristics of the micro holes in terms of Taperness and diametrical overcut was carried out.
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