Experimental Study onWire Electrical Discharge Machining of Tapered Parts

摘要

This experimental work is intended to optimize the parameters of wire electrical discharge machining process by considering the influence of input parameters such as pulse on time, peak current, wire tension and the various taper angles on the performance measures namely cutting speed, surface roughness (Ra) and the taper error. The taper angle is an imperative control factor dictated by the job geometry. The taper error has been a critical response in view of tool and die making industry that has been addressed in thiswork. Experiments have been performed on AISI D3 tool steel by employing Taguchi's L9 orthogonal array. Later, parametric analysis has been performed. The analysis of the experimental results revealed that the pulse on time has been the most influencing factor for the cutting speed and surface roughness, while the taper angle to be cut on the workpiece has been the significant factor for taper error. Finally, Taguchibased grey relational analysis has been employed for carrying out simultaneous optimization of the responses.