Research On Processing Technology Of Aircraft Flap Titanium Alloy Actuator Bearing

Titanium alloy actuator bearing is one of the important connecting components of aircraft structure.It is the bearing part that bears and transmits concentrated load and is prone to fatigue damage.It is also a key part of aircraft structural strength calculation and detail analysis.Titanium alloy actuator support parts are free forgings with high material removal rate and low roughing efficiency.During the processing,the parts are deformed greatly,and the dimensional accuracy and surface quality of the parts after finishing are difficult to guarantee.At the same time,there is no mature technology in the formulation of process plan,high-efficiency machining technology and optimization of cutting parameters.Therefore,it is of great significance to study the high-efficiency machining technology of the bearing parts of the actuator and improve the machining efficiency,machining precision and surface quality of the aircraft.In this paper,from the perspective of the structural characteristics of the actuator support and the processing technology,the high-efficiency roughing technology of the actuator support,the finishing technology based on the optimization of the cutting parameters,the deformation control of the actuator support and the planning of the machining tool path are carried out.Research.The following aspects are included in this thesis:(1)Actuator support structure analysis and machining process planning.By analyzing the structural characteristics and processing technology of the actuator support,the machining and measuring equipment such as machining machine tools,fixtures,tools and measuring tools in the machining process were selected,and the corresponding processing routes were formulated,and the machining process rules were compiled.(2)Efficient roughing process experiment of actuator support.Aiming at the problems of high removal rate of the actuator support and low processing efficiency,the methods of plunge milling and side milling are studied.Through the plunge milling process experiment,the cutting force,cutting temperature,machining stability and tool wear of the plunge milling and side milling machining are compared,and the milling efficiency is mainly used in the rough machining of the pulley frame to improve the machining efficiency.(3)Actuator bearing finishing process experiment.In order to solve the problems of large deformation and poor surface quality during the machining of the actuator support,the finishing cutting experiment was carried out.By studying the influence of cutting speed,cutting depth and feed per tooth on the surface roughness,the precision was optimized.Machining cutting parameters.(4)Actuator support deformation control technology and tool path trajectory planning.By analyzing the deformation of the actuator bearing during the machining process,the machining deformation control strategy is proposed.By optimizing the machining allowance,the deformation of the actuator bearing during machining is reduced.The roughing and finishing of the tool position of the pulley frame is planned,and the tool path simulation is carried out.The high-efficiency machining technology engineering application verification of the actuator supports shows that the high-efficiency machining technology studied in this paper can effectively improve the processing efficiency of the actuator support,reduce the processing cost,and improve the machining accuracy and surface quality of the parts.