Abstract
Environment problems are getting much more attention than ever these days, and we are working on developing dry machining technology which requires MQL or no cutting fluid includes toxic pollutant such as chlorine. We would present newly developed MQL cutting process. After evaluating cutting performance of absolute dry cutting, dry cutting with air-cooling, and MQL cutting, we chose MQL cutting which was found to be superior in terms of the main issues, lubrication and cooling. And then, we developed new MQL cutting by adopting newly developed high lubrication cutting fluid and incidental facilities to secure same cutting tool life and cutting accuracy as those of conventional wet cutting.