Abstract
When machining surface texture, the machining time and accuracy are decided by the diameter of the ball end mill used. In this study, the tool diameter was calculated based on the curvature of the shape data of the texture. Because the curvature of surface texture differs by location, the machining time increases when machining using only small tool diameters. We therefore proposed the method of gradually changing the tool diameter by dividing the machining area into machinable and non-machinable areas, which resulted in reduced machining time. The machining surface was also evaluated in this study.