Surface Topography of TC11 Titanium Alloy in Orthogonal High-speed Turn-Milling Combined Cutting Process

Titanium alloy possesses excellent physical and mechanical properties and is widely applied in aerospace, national defense, and military industries. This paper carried out simulation and relevant experiments on the tool motion curve during orthogonal high-speed turning-milling of TC11 titanium alloy, and the surface morphology of titanium alloy in orthogonal high-speed turning-milling was studied. The results shown that the morphology of the workpiece surface changed with the turning-milling speed ratio. When the turning and milling speed ratio was relatively low, the workpiece surface presented a group of pit morphology. As the turning and milling speed ratio increased, the surface of the workpiece changed from a group of pit morphology to a fish-scale morphology. When the turning-milling speed ratio was relatively high, the workpiece surface morphology was close to the parallel groove morphology formed by turning. The results of this research provide technical support and reference for precision machining of titanium alloy components.