Electrical Discharge Machining Grinding

Electrical discharge machining (EDM) grinding is a mass-reducing process that uses a rotating conductive wheel to remove electrically conductive material by means of controlled, repetitive spark discharges.  A dielectric fluid is used to flush away the chips, regulate the discharge, and cool the wheel and the workpiece.

Process Characteristics

Uses a slowly rotating conductive wheel that is kept within sparking (arcing) distance of the workpiece
Wheels and workpieces must be electrically conductive
Fragile and thin parts can be processed without distortion
Can process very hard or difficult to machine metals
Removes material by controlled spark erosion

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Information provided is from Manufacturing Processes Reference Guide by Robert H. Todd, Dell K. Allen, and Leo Alting.--1st ed. Published by Industrial Press Inc., 1994.