Abstract
On the high-speed end milling, it is thought that the dispersion of the cutting fluid from surface of tool body by centrifugal force and the dispersion by collision with rake face have a large influence on the small particle generation process when the cutting fluid is supplied. Then, the tool rotational speed and the tool shape were paid to attention to clarify those influences. And the behavior of the small particles and its dispersion state were observed with high-speed camera. As a result, it was found that the generated particle becomes small as the tool rotational speed becomes high, and the small particle disperses horizontally when the number of teeth increases.
