EXPERIMENTAL INVESTIGATION ON PRECISION FINISHING OF SPUR GEARS BY PULSE ELECTROCHEMICAL HONING (PECH) PROCESS

摘要

This paper presents the findings of the experimental investigations on precision finishing of spur gears by pulse electrochemical honing (PECH) process. Electrochemical honing (ECH) is one of the most potential hybrid machining processes used for finishing internal cylinders and gears by combining faster material removal capability of ECM and capability of correcting shape-related errors of honing in a single process and overcoming their individual limitations at the same time. Moreover, the pulse assistance in ECH provides the relaxation period to the system during off time to discharge the dregs out of the electrodes' gap and improves the process capability. The present study focuses on the effect of finishing time on precision finishing of gear tooth profile.