| 摘要 |
PURPOSE:To optimumly execute corner processing by changing distance size between the center position of a rotating tool in the corner processing for two faces forming an acute angle and a position changing the route of the tool in accordance with a working condition. CONSTITUTION:In case of cutting two faces forming an acute angle theta of an object 1 to be cut out by the rotating tool to be numerically controlled, the rotating tool is moved from the center position B of the tool at a moment when an edge circle is separated from the vertex of said acute angle theta up to a position C from which the center route is to be changed after cutting out one side. At that time, the distance is changed in accordance wit the working condition. In case of preventing the apex angle from being rounded, the distance BC is extended, and when an obstacle exists in the vicinity of the apex angle, the distance BC is restricted to a range which is not interfered by the obstacle. Thus, optimum corner processing corresponding to a given working condition can be attained. |
