トポロジー最適化による荒加工工程の加工手順決定手法に関する研究

抄録

Most high-value-added workpieces have complex three-dimensional shapes such as aircraft parts. However, it is difficult to automatically determine the cutting procedure during a rough machining operation using a commercial CAM system because there is a large number of combinations to reduce the induced displacement and vibration of the workpiece. Therefore, in order to objectify the machining know-how of skillful experts, a determination method of cutting procedure is proposed based on topology optimization that solves the maximum static stiffness design problem. The determination method aims to reasonably improve workpiece stiffness and to automatically generate pillar-like supports for workpieces. A case study is conducted to confirm the effectiveness of the cutting procedure for complex parts according to the optimized workpiece shapes based on topology optimization. The result shows the possibility of achieving a high efficient rough machining operation to obtain the target shape.