Abstract
Electrorheological fluid (ER fluid) is one of the functional fluids, which viscosity increases with electric field intensity. WC aspherical glass molding dies are usually manufactured by grinding process. However, the decline of the number of effective cutting edges in micro-grinding process causes coarse surface roughness. Therefore, polishing process must be done after the grinding process. In this paper. ER fluid assisted polishing method is proposed. In this polishing method, electric field is generated between a workpiece and a micro-tool, and abrasive grains are gathered around the micro tool. Gathered abrasive grains act like a micro polishing pad. And roughness of ground surface is improved by this polishing method.
