The Study On The Five-axis High Speed Cutting And Simulation Of Integrated Impeller

Integrated impellers are a kind of representative parts with relatively normal shape of the complicated thin-walled which is usually used for turbine machinery equipment. The design of the working surface relates to several comprehensive subjects such as aerodynamics, hydrodynamics and so on. So the manufacture means, manufacture precision and manufacture quality of the surface all have large effect on the capability parameters.In manufacturing, the capabilities of integrated impellers based on traditional method that the blade and the hub are welded into one integral after separately finished, which is a waste of production cycle and cost, are difficult to be guaranteed. Accordingly, combine the High Speed Cutting technology,5-axis CNC machine and CAM technology to improve the integrated impeller manufacture quality and efficiency is the necessary for the development of modern manufacturing industry. Among them, High Speed Cutting technology is appropriate for the manufacturing for the metal parts. It may reduce the cutting heat, cutting force and cutting deformation. 5-axis CNC machine can solve the bottleneck of complex sculptured surface parts, greatly improves the surface manufacture quality and efficiency. Therefore, the machining quality can be deeply improved through the study on the technology of manufacturing impeller with 5-axis High Speed Cutting method.Synthetically considering the characteristic of integrated impeller and the feature of 5-axis High Speed Cutting technology, analyze the key points of trending to deformation and interference in 5-axis CNC machining, and the correlation analysis of integrated impeller CAM programming and postprocessor. First, in three dimensional design software UG environment, modeling the integrated impeller's blade and hub respectively, emphasizing analysis the method of modeling the blade surface, for subsequent 5-axis High Speed Cutting ready to work. Then analyze the 5-axis CNC High Speed Cutting technology thoroughly, choose appropriate 5-axis of integrated impeller High Speed Cutting process, such as blank material, manufacturing tools, manufacturing fixture, manufacturing the knife points and changing knife points, and other aspects. Accordingly, planning a integrated impeller 5-axis High Speed Cutting process scheme. Then using ANSYS to finite element analysis the integrated impellers, control the key points of trending to deformation in 5-axis CNC machining. Finally in UG CAM function module of integrated impeller blade surface and runner surface respectively, while check and simulation integrated impeller's manufacturing process repeatedly, And analyze the postprocessor for the actual CNC machining. Make a good foundation for the actual CNC machining of integrated impeller.