回転2軸の動きを考慮した５軸制御加工用工具経路生成法

概要

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The current CAM software for 5-axis controlled machining does not consider machine tool information when generating tool path. Therefore, the CAM software has the problem of outputting the tool path data that might be changed into the problematic NC data including redundant change and reversal rotation of rotational axes. In this report, the configuration space in that a position of two rotational axes indicated in one point is applied. A-star algorithm that is one of techniques for searching path is applied to decide tool attitudes considering the motion of two rotational axes in 3-dimensional configuration space. The developed method can generate tool path limiting the number of used rotational axes, and reducing the moving amount of two rotational axes. Furthermore, the method can generate tool path that avoids the reversal rotation of two rotational axes that might cause the processing error. Finally, machining experiments were performed for overhang groove shapes. As a result, excellent finished surface was actually obtained, and the usefulness of the developed method is confirmed.