The Research On Processing Technology Of Aluminum Alloy Thin Walled Parts

Focus on the lackage of the processing technology of aluminum Alloy thin-walled parts and its development trend,this paper indicates that the causes of deformation of thin-walled parts machining Aluminum Alloy mainly comes from cutting parameters,clamping mode,processing route,etc.Therefore,the paper conducts in the following aspects such as the functional relation of the cutting force and the cutting parameter,the functional relation the position of the surface morphology and the cutting parameter,the deformation characteristics of the clamping and the dimensional accuracy in different processing routes.Based on the Kline milling force model and combined with the factor of the milling thickness and the cutter eccentricity,a new model of the milling force is established in this paper.Through the model,the condition of change in milling force can be obtained in different milling parameter.According to the principle of coordinate transformation,the function relation between the space coordinates and the cutting parameters of surface topography can be obtained,and the optimum cutting parameters for the thin wall parts of aluminum alloy can be determined.According to analysis of the irregular shape of the workpiece surface due to the different loading modes,several solution are proposed to reducing deformation such as increasing the inner and outer sleeve,injecting plastic fluid,providing internal and external brace and transforming the radial force into axial force,etc.In this way,the corresponding relationship between the workpiece clamping method and the surface deformation is determined,and the suitable clamping method for the thin-part is identified.In addition,based on the CNC system of lathe GSK98 TDc,the cutting process of aluminum alloy thin wall parts is studied.According to the different deformation condition of the thin wall parts by different processing method,The best processing route is determined.At the end of this paper,the ANSYS system is used to the model and analysis of the differences of t milling forces,clamping methods and processing routes of the thin-walled parts of the Aluminum Alloy and testified the Theoretical method and processing method.