Theoretical and Experimental Investigation into the Surface Roughness of Small-Hole EDM

The characteristic physical properties of titanium alloy materials of the electrical discharge machining (EDM) small hole is studied theoretically and experimentally. From the theory of EDM, based on the phenomenon of microcosmic surface on EDM small hole, the model of surface roughness is built, and the regulation between roughness and pulse width, peak electric current was analyzed, and the roughness empiric formula is developed by use of dyadic linear regression method. Furthermore, by computer simulation technology with established formula the results are derived for other people to public data simulation. After being simulated, the results show that the established model in this paper can accurately forecast the value of processing roughness Ra of commonly used in the processing parameters within the framework, provides a useful complement to titanium alloys for processing the theoretical study and practical application.