CREEP-FEED GRINDING OF ADVANCED CERAMICS.

Advanced ceramics have some excellent properties which are suitable for mechanical components. It is, however, quite difficult to grind ceramics with high efficiency because of their high strength, hardness and brittleness. Now, creep-feed grinding is well known as an effective technology to increase the productivity of form grinding. In this study, creep-feed grinding is carried out for representative advanced ceramics, such as Al//2O//3, Sic and Si//3N//4. The grinding force, surface roughness, chipping size and grinding ratio are experimentally investigated. In addition, some proposals are made to resolve adverse effects in creep-feed grinding. Experimental results show that a resinoid bonded diamond wheel with grooves on the grinding surface, which is proposed in this study, has an excellent performance. Furthermore, the influence of the grinding fluid on the creep-feed grinding is investigated.