Research on the Dynamic Flexible Support Machining Method for Propeller Blades

Abstract

Abstract At present, most of the propeller machining adopts single-sided machining, and its machining vibration and deformation seriously affect the machining accuracy. To reduce the machining vibration, a dynamic flexible support machining method is proposed, i.e., while the tool is machining, the multi-point flexible support device supports the blade and counteracts the milling force to suppress the vibration and deformation. Due to the complex shape of the blade and the special structure of the support device, the blade is divided into different areas, and a support motion trajectory combining symmetric and asymmetric motions is planned, and then a set of post-processing systems is introduced. After obtaining the tool position points, the support points are solved cyclically by the ergodic method. Subsequently, the support points are interpolated, and the vectors are smoothed to obtain smooth and continuous support trajectories. Finally, the machining parameters are calculated, and the machining data applicable to the XYZ-3RPS hybrid machine are integrated. The feasibility of the proposed support trajectory and post-processing algorithm was ultimately demonstrated through practical machining experiments.