Transactions on Machine Design Yang Hongmei 3 2 2015 http://www.dline.info/tmd/fulltext/v3n2/v3n2_1.pdf Engineering ceramics was machining based on grinding technology as major process method assisting with ultrasonic vibration, and the influences of grinding depth and worktable feed rate on the engineering ceramics surface roughness as well as the engineering ceramics topography was also evaluated with the help of surface rough meter and white-light interferometer. The results show that, compared with the engineering ceramics surface grinding using conventional process, the surface roughness obviously lowered and the topography improved to some extent when grinding assisting with ultrasonic vibration. Furthermore, the surface conditions was weakened as the grinding depth increases and the worktable feed rate accelerates, which highly reached to 0.332μm and 0.187μm respectively.