“Optimization Of Parameters For Wedm Machine For Productivity Improvement”

Optimization of operating parameters is an important step in machining, particularly for operating unconventional machining procedure like Wirecut Electro Discharge Machining. Since wire-cut EDM has experienced explosive growth in application users demand and need maximum productivity and through-put, increased accuracy, and predictable performance. Also machines and job requirements vary greatly, which can make selection of the correct operation parameters a daunting task. As a result, experimentation is necessary if optimum results are to be achieved. Although this reference is not intended to be all-encompassing, it should be a useful guide for selection of parameters. A suitable selection of machining parameters for the process relies heavily on the operator’s technologies and experience and they do not provide the optimal machining conditions. In every manufacturing process, material removal rate needs to be maximized while controlling quality by controlling electrode wear rate. In this work, an attempt has been made to optimize the machining parameters for minimum electrode wear rate and maximum material removal rate in WEDM process. Experiments were performed under different cutting conditions of Wire feed (WF), wire tension (WT), discharge current of the machine and discharge voltage (V). Experiments were executed as per Taguchi’s L-9 orthogonal array. The output responses were optimized using signal-to-noise (S/N) ratio in addition to Desirability function approach to convert a multi objective optimization problem to a single objective optimization problem.