327 形彫り放電加工の放電点分布シミュレーション(OS1 金型の製作,放電加工)

概要

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It is known that the phenomena of the localization and concentration of discharge locations occur in die-sinking EDM especially when using a working surface whose length to width ratio is large. In order to explore the cause, the computer simulation for predicting discharge locations in die-sinking EDM by using the discharge locations searching algorithm was carried out. In the simulation, it was assumed that the debris particles move along the streamlines of the dielectric fluid which are obtained by the hydrodynamic analysis. It was also taken into account that the debris particles are diffused by the disturbing motion of the dielectric fluid caused by the gap adjusting control of the feed axis. Furthermore, the model involved the influence of the temperature distribution over the electrode surface on the determination of the discharge locations. As a result, the discharge localization and concentration were simulated successfully, and the results of the simulation agreed with the experimental data.
社団法人日本機械学会の論文
2001-11-20