Study on Grinding of Fine Ceramics (1st Report)

Size Generation Process

Abstract

The existence of characteristic phenomena of fine ceramics, which is typical of brittle material, was revealed through the experiments of the transitional cutting with the sintered diamond tool. Each phenomenon such as rubbing, swelling, crack initiation, large-scale fracture, appears according to the interference depth of tool. In this paper, taking these results into account, the grinding process of fine ceramics was fully analyzed in a fixed infeed plunge grinding using a diamond grinding wheel. It becomes clear that in grinding of fine ceramics, the mechanism of material removal depends, on the quantity of real interference depth of wheel, and that the variations of size generation and grinding force are fairly unlike in grinding of metal in three states, namely, transient, steady and spark-out states. Also the effect of interference conditions between grinding wheel and workpiece on grinding phenomena was discussed.