電解加工による曲がり穴加工法の開発(第2報) : 曲がり穴の曲率制御

概要

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A new method of curved hole processing for cooling jackets of metal molds is proposed. This machining technique is characterized by a self-processing electrode capable of following the shape of the curved hole to be machined. In order to reduce the friction between the electrode and workpiece pointed out in the previous paper, it was attempted to vibrate the electrode. An improved electrode, which increased in hardness at the root side and increased in flexibility at the tip side, was produced and its effect was empirically verified. The experiments clarified that the processing method with electrode vibration was effective for friction reduction and could successfully produce smooth curved holes. In consideration of an application to metal molds, it was found that a change of the turn speed of the electrode as well as a change of the electrolyte pressure can control curvature of curved holes.
2003-10-05