Cooling ability of coolant supplied from inner side of grinding wheel on corner grinding using a small-diameter wheel

Abstract

In contour grinding of a curved surface, especially grinding of the inner surface of a corner, the contact arc length becomes large and the grinding force increases, which leads to deflection of the grinding wheel shaft and an increase in grinding heat, resulting in deterioration of shape accuracy and grinding burn. Here, grinding fluid supplied from the inner side of the grinding wheel was applied to inner surface grinding with a small-diameter grinding wheel, and the effects on temperature and grinding force were investigated. In addition, the heat partition ratio of the grinding energy to the workpiece was investigated analytically. The results showed that supplying the grinding fluid from the inner side of the grinding wheel prevented clogging of the grinding wheel and reduced the grinding energy, with cooling capacity equivalent to that with the external supply of grinding fluid.