Aero-engine Blade Manufacturing Technology Research

Aero-engine blade is one of the core components of the engine.The engine's performance depends largely on the surface design and manufacture level of the leaf. Aero-engine blade is a kind of typical free-form parts,and its curved shape and manufacture of precision aircraft engine directly determines the size of propulsive efficiency.The processing methods of these components will help to improve the accuracy and efficiency of processing.Traditional aero-engine blade is time-consuming and laborious.It is difficult to guarantee accuracy.With the development of numerical control technology,the current most of the rotor blades adopt CNC milling machine,but it can be easily caused by stress and deformation processing,machining accuracy is still lower than ideal.How to give full play to the potential of CNC machining to improve the accuracy of the rotor blades and the efficiency of processing is a research focus of CNC machining.This article gives a description of conventional processing and processing technology of the theoretical analysis,an analysis of the advantages and disadvantages of various processing programs,and a selection of a cost-effective manufacturing method called spiral high-speed milling.Focus on reducing the processing deformation of the aero-engine blades,and the processing programs have been studied.A new tool path planning method based on such a high degree of residual processing spiral trajectory planning has been studied to improve the machining accuracy.This article includes a large number of theoretical studies and experiments based on processing of the leaves,an analysis of temperature changes, stress and temperature on the finite element analysis using the Pro/MECHANICA, maximum stress and maximum deformation results.According to the results of finite element analysis,using anti-deformation of the principle of a second form of the leaf,after the completion of its processing to meet the design size and surface accuracy.