水溶性切削油剤を用いた低速仕上げ切削

概要

論文の詳細を見る
In the cutting of steel, it is not easy to get good surface finish of the order of submicron mainly because of built-up edge (BUE). BUE has been known to be eliminated by elevating the cutting temperature over the recrystallization temperature work material. For small diameter of work piece or rotary tool, however, it is practically impossible to get this temperature because of the limitation on high cutting speed. In this study, good surface finish is shown to be obtained even at low cutting speed under some conditions. Machining tests of steel using water base cutting fluids indicate that (1) BUE disappears at the cutting speeds not only over a high critical value, but also below a low critical value, (2) the lower critical cutting speed is mainly determined by tool face temperature and the tool and work materials, and (3) the surface roughness Ry below less than 1μm can be obtained easily even by general purpose lathe when cutting conditions are chosen appropriately.
横浜国立大学の論文