Evaluation of Performance WEDM by Parameter Design

The optimum machining conditions of a WEDM are estimated by the parameter design on the basis of Taguchi's method, and the performance evaluation is carried out.When a dimension is adopted as a characteristic, it is estimated that, by optimizing the average machining voltage and wire speed, the improvement of the accuracy is expected by about 50%, and under the optimum machining conditions machining is done with precision of about 21μm (σ).Other results concerning angle show that by optimizing the discharge currents for machining and quiescent time, the improvement of the accuracy is expected by 40%, and similarly under the optimum machining conditions, machining can be done with precision of about 8s (σ).