砥石内研削液供給機構における砥石要目が砥石表面温度と仕上げ面粗さに及ぼす影響

抄録

In the grinding, a coolant system that supplies grinding fluid from the inner side of the grinding wheel utilizing the spindle through supplying system of the machining center has been proposed, but its application examples are very few. The objective of this paper is to clear the effect of grinding wheel specifications on the grinding wheel surface temperature and the surface roughness which is suitable for the coolant supplying system from inter side of grinding wheel. Then, we focused on the grinding wheel surface temperature and the surface roughness which concern directly with clogging or wear of grinding wheel and surface quality. Grinding wheel surface temperature was measured by a developed grinding wheel system in which a thermocouple is embedded. Surface roughness was measured by a surface roughness measurement device. Also, the effect of coolant supply method was investigated in two methods; namely the internal supply and conventional external supply from external nozzles. As a result, it was found that the grinding wheel surface temperature and surface roughness is lower on the case of the internal coolant supply compared with external coolant supply. Furthermore, it was clarified that the surface roughness is improved when the grain size is small on the case of the internal coolant supply, but the grinding wheel surface temperature rises.