When processing hard materials such as cemented carbide and ceramics, there are problems such as frequent clogging of the grinding wheel and long non-processing time required for truing and dressing. Previous reports have described that a fine bubble (FB) coolant decreases the grinding force. However, few studies have been reported on the method for generating FBs using microporous ceramics. In this study, the number density of FBs generated by a microporous FB generator and the static contact angle of the FB coolant droplet were investigated. The static contact angle of the FB coolant was 2�‹ lower than that of the non-FB coolant, and the grinding force was reduced by 15% during surface grinding of cemented carbide with a diamond wheel.

2.High-Efficiency_Grinding_Using_a_Fine_Bubble_Coolant_Generated_by_a_Microporous_Fine_Bubble_Genetator.pdf