ジャンプフラッシング放電加工に関する研究(第1報) : ジャンプ動作の適応制御

概要

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This paper describes a newly developed strategy of adaptive control of electrode motion for the jump-flushing in the diesinking EDM. This strategy consists of two parts. First, the execution timing of the jump-motion of the electrode is determined by a sub-system of gap-condition detector which samples peak voltages of wave forms appeared in the working gap and predicts the occurrence of the harmful arc by processing the data of these voltages, and then, outputs a request-signal for the jump-motion. Second, according to an algorithm which evaluates the sinking speed, the amplitude of the jump-motion is controlled adaptively so that this speed will be kept higher. The main experimental results obtained are as follows : (1) Appropriate setting of parameters used in the sub-system for determining its operation makes it possible to avoid the harmful arc even when the depth of cut increases fairly. (2) The amplitude of the jumpmotion of the electrode is changed effectively with keeping the sinking speed almost optimal during whole process in machining.
公益社団法人精密工学会の論文
1990-05-05