Five-axis plunge milling machining method for ruled surface impeller

The invention discloses a five-axis plunge milling machining method for a ruled surface impeller. The method comprises the following steps of: generating a boundary vector, interpolating the boundary vector, calculating the row pitch and step pitch, calculating a cutter center point, and planning a cutter path until machining of a ruled surface impeller part is finished. By the method, the defect of low rough machining efficiency in the prior art is overcome, the material removal rate and machining efficiency of the plunge milling are guaranteed, and the method is applicable to popularization and application.