Abstract
This paper deals with the fundamental problems and their solutions in the machining with variable thickness in wire cutting EDM.So far, in this kind of machining, there have been such problems that the machining feed rate is not only slower, but also the machining accuracy is worse because of the constant electrical conditions of power supply. Then, the optimum control method has been developed to solve the above problems and was introduced by the first report.In this paper, the fundamental experiments were done to investigate the influences to the machining characteristics in the case of machining workpiece with variable thickness, and consequently the new optimum control method was developed on the basis of the above investigations, which appeared to be very effective to the improvement of the machining characteristics such as machining feed rate, machining accuracy.
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