Structure and method of incremental orbital electrical discharge machining

摘要

A method of electrical discharge machining and an electrical discharge machine apparatus therefor, consisting of rotating an electrode about an axis of rotation and simultaneously orbiting the electrode about an orbital axis which is parallel and in transverse spaced relation to its axis of rotation while maintaining the radially outer surface of the electrode in electrical discharge machining relation to a work piece, and, further, moving the electrode radially outwardly in increments.