Research on Electrical Discharge Grinding Technics of Polycrystalline Diamond Compact Cutting Tool

Electrical discharge grinding is one of the most widely used method to machine polycrystalline diamond compact cutting tool. Polycrystalline diamond compact samples with different crystal granularity are the research object. Peak current, pulse width and pulse interval are chosen as the main process parameters. The material removal volume and electrode loss set as the evaluation index of productive efficiency; workpiece surface roughness value sets as an evaluation standard of processing quality. With electrical discharge grinding experiments, combined with scanning electron microscopy observation and roughness tester, the influences of the main process parameters on electrical discharge grinding are analyzed, polycrystalline diamond compact electrical discharge grinding process are summarized.