method and device for funkenerosiven or electrochemical cutting a workpiece

摘要

A method of electrically cutting a work piece with a wire electrode in which while electric current is applied between the work piece and the wire electrode through a cutting liquid in a cutting gap formed therebetween. The work piece and the wire electrode are relatively moved to each other, to cut the work piece into an article having a desired configuration. The specific resistance of the cutting liquid is controlled to control the width of a groove cut in the work piece. Furthermore, an apparatus for practicing the method is disclosed, which comprises a cutting liquid mixing and supplying device for controlling the specific resistance of the cutting liquid to a desired value and supplying into a cutting gap.