Machining Processes Optimization For Typical Features Of Landing Gear Sleeve And Software Development

The landing gear sleeve is an important part of the aircraft and its processing is directly related to the safety of the whole aircraft.Traditional landing gear sleeve processes method needs different kinds of machine tools to process different features,that cause the low efficiency of the processing and multiple clamping leads to the uncertainty of machining precision,but turn-milling machining method can solve the problem above quite well,and turn-milling machining can finish all the operations with only one clamping on one machining tool,improve the efficiency and precision quite well.At present,domestic enterprises gradually using turn-milling machining tools to machine landing gear sleeve,but due to the limitation of technological level,the choices of the parameters still depend on the experiences and gradually improve in the subsequent machining,that can not give full scope to the advantage and potential of turn-milling machining tool,resulting in great waste.Therefore,this article aims at the choices of parameters and optimization for the machining of landing gear sleeve on the turn-milling machining tool,and gives theoretical reference to technologosts for the parameter choicesAiming at the orthogonal turn-milling for cylindrical surface and planar milling for the flank,the cutting force coefficient was calibrated and the frequence response functions were obtained by hammering test,then the kinetic parameters of the machining system were obtained,the stability limitation was solved by stability model,and optimized the parameters according to the limitation,as a result,the efficiency was increased.Aiming at the cavity machining,spiral tool path was utilized instead of contourparallel tool path for optimization,and machining experiment was done with these two tool path,compared the parameters during the machining processing to verify the advantage of spiral tool path.Then the stability limitation was solved and the optimization parameters were chosen by the lobe figure,improving the efficiency of cavity machining.The UG secondary development technology was used to develop the stability and milling power simulation module,which can achieve the stability and machining power simulation of landing gear sleeve machining,therefore the stability and machining power can be predicted and technologists can optimize the parameter to ensure the quality and efficiency,and provide theoretical support and reference to the technologists.