Method and apparatus for electrically machining a conductive workpiece with isotropic ultrasonic-waves radiation

摘要

An improved method of and apparatus for electrically machining a workpiece wherein the machining surface of an electrode is spacedly juxtaposed with the workpiece and supplied with a machining liquid. The liquid is carried into a machining gap between the electrode and the workpiece and a wave-emitting member with a continuous annular vibrant surface is disposed adjacent to the workpiece whereby to position the said surface to spacedly surround the electrode. Ultrasonic waves are produced with this surface by virtue of a mechanical vibratory activation of the member by a transducer and such waves are emitted against at least a portion of the machining electrode surface isotropically whereby to effect a uniform activation of the electrode surface and the machining liquid medium on the latter in the machining zone.