Parameters Optimization about Precision Milling Titanium Alloy TC4 Used for Aviation

To improve the production efficiency and product quality of titanium alloy TC4, with the minimum of cutting force F, surface roughness Ra, and surface peak valley height Pv as the optimized goal, using orthogonal rotating combination design method of three factors quadratic regression, the influence of cutting speed vc, feed per tooth fz and cutting width ae to cutting force (Fx, Fy) surface peak valley height Pv and surface roughness Ra are mainly studied, and the best cutting amount combination is chosen. Experiment results indicate that the best cutting parameters of titanium alloy are vc=28.588 m/min、fz=0.043 3 mm/z、ae=0.1 mm, the optimal values are =3.346 N、 =47.01 N、 =673.89 nm and =201.78 nm. This research is of theoretical significance for improving the processing efficiency and machining quality and reducing the production cost.