Federate Scheduling For NC Machining Of Aero Engine Fan Blades

As the key components of aero engine, the machining quality of the fan blade is related to the performance of aero engine. The fan blades are always designed with complex curved surface to meet the demands of working in extreme environment. Also, they are usually made of the material with high corrosion resistance and high strength. So the machining process should be divided into several parts. And there are some problems such as cutting tool wear, low machining efficiency and low machining precision. Aiming at these problems caused by fluctuations of the milling force, this paper creates a milling force model in which blade characteristics are presented, and puts forwards a method of federate optimization to improve the machining quality and efficiency. The concrete research contents are as follows.Firstly, the theoretical basis of the cutting force models is introduced. The influence of the curvature radius of workpiece surface is researched, and a milling force model in which blade characteristics are presented is gained.Secondly, the phenomenon of fluctuations of the milling force in the machining process is found by force model simulation. Aiming at the workpiece with curved surface such as blades, a method of federate optimization based on the relation of milling force and the federate is put forwards to keep the milling force stable.Finally, considering the complex environment in practical machining, Production Module 3D is used to realize the optimization of machining aero engine blades. The details of compatibility process, optimization process and the parameter selection are given. The experimental results show that the method can effectively improve the machining efficiency and reduce the processing cost while ensuring the machining quality.