Abstract

The main content of this paper concentrates on studying of designing and manufacturing a small- size electrical discharge machining (EDM) machine in order to meet the domestic demands in the field of machining the geometrically complex shape machine elements, hard materials or in case of severe requirements of precision, surface roughness. These above cases can not be performed with the traditional machining processes. Based on the results of studying the working principle of the EDM method, the solutions for automatically controlling the tool electrode, all necessary materials available in vietnamese market, an EDM machine is successfully constructed. This machine includes the mechanical part, the electrical components (pulse generator), automatic control mechanism of tool electrode, pump system, filter, lighting, etc The initial machining operations have been also realized to determine some important technological parameters as well as to evaluate the obtained machining quality of this machine.