Development and Experimental Study of Electrodischarge Face Grinding

Electrodischarge face grinding (EDFG) process has been developed for machining of flat surfaces of materials that are difficult to machine by creating spark between face of disc shape rotating tool electrode and workpiece.The rotation of non-abrasive disc shape tool electrode about vertical axis (a new feature of face grinding) improves material removal rate (MRR) and average surface roughness (ASR) because of effective flushing of working gap. This paper presents the effect of input process parameters of EDFG, such as discharge current, pulse on-time and off-time, and wheel speed on MRR and ASR during machining of high carbon steel and high speed steel workpieces. An attempt has also been made to compare the results with those of stationary electrodes.