Abstract
In complex parts machining, workpiece shape and stiffness change greatly during a rough machining operation, and they induce workpiece displacement and vibration that strongly affect machining accuracy. However, it is difficult to automatically determine parameters of operation planning by using a commercial CAM software because there is a large number of combinations. Therefore, in order to improve the machining efficiency of complex parts, a determination method of workpiece shapes during a rough machining operation is proposed based on topology optimization. On the other hand, tool paths are not generated automatically to create the obtained workpiece shapes in the previous study. In this study, a generation method of tool paths is proposed by using the design variable to ensure workpiece stiffness during a rough machinig operation. By conducting a case study assuming complex parts machining, it is found that tool paths can be generated based on the design variable obtained in the calculation of topology optimization.
