Study On Optimization Of Processing Technology Of Thin Wall Parts

The thin-walled workpieces of bearing ring which is parts of aviation camera lens barrel assembly are selected as the study object and the problem about high reject rate due to machining deformation in actual production are the analytical study. On the bearing ring processing technology are analyzed. Design and improve the special fixture. The deformation of bearing ring in a clamping force is reduced to a lower magnitude by heat treatment process optimization and clamping mode optimization. Clamping process of FEM is simulated. It shows that the maximum deformation is composed of0.165^m reduced to0.0485μm. The thin-walled bearing ring deformation improvement condition is very obvious by adopting a bonding fixture. In addition, the optimization paramenters of the turning process about thin-walled workpieces are studied. The optimal cutting parameters are obtained by the taguchi method and the principal component analysis method. Obtained excircle finish machining cutting parameters when the processing quality of the main optimization goal. Using two kinds of clamps combination method and cubic boron nitride cutting tool in CNC lathe, the quenched workpiece finishing can be completed successfully.Bearing ring assembly together with machine through the high and low vibration experiment, no effects of space camera imaging quality and aerospace camera resolution up to the national standard. When check the no assembling bearing ring storage for several months, the precision of the workpiece without variation and microstructure still maintains a high stability.