Ann Arbor Machine Company

Raycon Corporation

Raycon Textron Inc.

George Barbulescu

John M Check

Myron Johnson

An electrical discharge machining system for machining a workpiece. The system comprises a wire guide support for positioning and guiding a wire electrode into a desired position relative to the workpiece and a source of a liquid dielectric fluid. The supply also provides means for directing the dielectric fluid from the source to a machining site between the electrode and the workpiece, and for atomizing the dielectric fluid in the machining site.

Electrical discharge machine apparatus with improved dielectric flushing

A micro EDM servo-head is disclosed which includes a servo, a lead screw, a carriage block engaging the lead screw, a support block, a contact block secured to the carriage block, and an electrode guide system coupled to the support block for controlling the position of the electrode of an EDM apparatus to which the micro EDM servo head is attached. The electrode guide system includes an electrode guide bottom having a longitudinal groove, and a floating guide cover which is biased toward the electrode guide bottom such that the electrode is forced into the groove and the position is controlled by forcing the electrode into the groove.

Floating cover electrode guide system for electric discharge machining

An electric discharge machine side bore head used for machining in a generally transverse direction within a cavity formed in a workpiece. The head retaining an electrode having a primary axis oriented generally perpendicular to the surface which is to be machined. The side bore head includes an electrode holder, an electric contact providing electric current to the electrode holder, and a device for releasably retaining the electrode near one end of the electrode holder. The primary axis of the electrode is oriented generally perpendicular to a longitudinal axis of the electrode holder.

Side bore electrode retention device for electric discharge machining

A wire guide for a servo driven wire electrode in an electrical discharge machine (EDM) has inserts defining a precision guide slot for the electrode. The inserts are coated with a low friction coating to smooth the servo drive of the wire electrode through the wire guide so as to improve spark gap erosion produced between a tip portion of the electrode and a workpiece.

Low friction wire guide for electrical discharge machine

A wire guide directs a wire electrode from a refeed mechanism in an electrical discharge machine EDM to a workpiece. The wire guide has ceramic inserts defining a precision guide slot for the electrode and wherein one of the inserts is carried by a deflectable member spring biased to damp the electrode so as to maintain concentricity of holes formed by the electrode and thereby closely control the hole diameter.

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Ann Arbor, MI, United States of America

George Barbulescu