| 摘要 |
PURPOSE:To decide automatically a starting point and a direction of processing at the time of face processing by means of numerical control, by deciding a moving limit and the outermost tangent through a processing shape, a tool diameter and a reference processing diretion of a work. CONSTITUTION:In case of processing of the surface of a fixed shape through numerical control, a processing shape 100 of a work 10, a tool 12 diameter and reference processing direction X-Y are inputted. A moving limit shape 102 of the tool 12 is obtained by adding a half of the tool 12 diameter to the processing shape 100. Then, a tangent in a Y axis direction of the minimum value in a X axis direction of the work 10 obtained by making a reference direction into a Y axis direction is made into the outermost tangent 104. Then, one side point among points of intersection P1 and P2 between the moving limit shape 102 and the outermost tangent 104 of the tool is made into a starting point of processing. After the tool 12 has been moved along the outermost tangent 104 processing is kept on by shifting it by a fixed pitch in the X axis direction. |
