Abstract
Nowadays, 3-axis control machining is generally performed in roughing process. However, 3-axis control machining is not efficient in case of roughing complicated shape, i.e. parts with overhanging shape, because it requires resetting the workpiece. To solve this problem, this study deals with roughing by 3+2-axis control machining. 3+2-axis control machining is performed by 3 translational axes after tilting a tool axis vector by 2 rotational axes. For 3+2-axis control machining, the determination of tool axis vectors and tool diameters affects the rough machining time especially. The study proposes a method of determining optimal tool axis vectors and selecting tool diameters for efficient roughing.
