Experimental investigations of advanced ceramics in high efficiency deep grinding

Abstract

In order to improve machining efficiency and grinding surface integrality of advanced ceramics, the effect of different grinding conditions (different wheel speed, different depth of cut or different feed rate) on surface characteristics, grinding force, specific grinding energy and material remove modes of advanced ceramics, including alumina, nitride silicon and yttria partially stabilized zirconia, are studied under high efficiency deep grinding condition. Special grinding efficiency and depth of cut arrive at 120 mm/(mm·s) and 6 mm respectively. Experiments indicate that the increase in wheel speed and decrease in depth of cut, i.e., decrease in maximum undeformed chip thickness, result in decrease in specific grinding force, increase in specific grinding energy and plough striations. It is shown that the grinding efficiency increases and the surface integrality does not become worse under grinding condition of great depth of cut.