Based on the process of orifice chamfer machining with inner R forming milling cutter

orthogonal milling experiments on TB6 were carried out to analyze the influence of maximum cutting speed vc

feed per tooth fz and cutting depth ap on the fatigue life of test specimens. The results show that the effect of feed per tooth on fatigue life is more pronounced than the effects of cutting depth and cutting speed. Meanwhile

under the milling conditions of experiments

the milling parameters are developed as vc=20m/min

fz=0.04–0.08mm/z

ap=0.1mm

which can make the fatigue life longest.