The demand for micro-precision tools is increasing due to the development of micro-scale tech industries. To enhance micro-precision, Wire Electro Discharge Grinding (WEDG), a hybrid process capable of on-machine fabrication of micro-tools and machining, has been devised as a method for micro-machining. In the WEDG system, the tool should be fabricated with uniform spark discharge energy, which is generated by controlling the proper distance between the tool and wire for precision. To properly control the distance, uncertain future conditions when discharge energy occurs between the tool and wire should be predicted statistically. In this regard, Fuzzy Logic, which defines uncertain conditions based on designated rules, was devised as a control method. As a result, it demonstrated better conditions for discharge voltage and processing time compared to other conventional control methods |
