Abstract
Recently, many ecological machining methods are reported. One of most popular technique is cutting with lubricant mist. But the mist can hardly reaches cutting point and most of them fly away into all directions. The flown mist makes machine tool dirty and may give bad effects for workers. So we thought out as a new method of supplying lubricant using lubricant bubbles. Lubricant bubbles may hard to fly away. In addition, lubricant may stay at the cutting point longer than other method. Already we confirmed availability of lubricant bubbles in turning. In this research, we notice viscosity of lubricant bubbles and use it for drilling. We compare machinability of wet cutting, mist cutting and bubble cutting and report the result of this research.
