Plunge Milling Method with Fixed Rotating Axis of a Closed Impeller

In order to remove material quickly at the stage of rough machining of a closed impeller, the theoretical model of the plunge milling of an impeller with fixed rotating axis is summarized as an optimization problem of finding the maximum volume of the inscribed general cylindrical surface of the impeller' s tunnel surface. Meanwhile, an optimization model with the maximum projected area of the cylinder of impeller channel along the tool axis direction is established and calculated. The basis for determining the two segments from both sides of the closed impeller in rough mac is proposed, it has further improved the ability of removing the rough machining material with maximum area of a closed impeller' Finally, the correctness of these methods is verified by an impeller with a wheel diameter of 1400mm and blades number of 17 and the remove ratio of 49.00%.