Numerical control polishing machine tool for propeller

The invention provides a propeller numerical control polishing machine tool, which belongs to the technical field of industrial machinery and comprises a rack, a clamping mechanical arm, a blade polishing and grinding device, an auxiliary mechanical arm and a propeller hub polishing and grinding device. The clamping mechanical arm can complete automatic clamping of the propeller, driving the propeller to reach a preset working position and feeding and discharging work of the propeller, the propeller blade polishing and grinding devices are symmetrically arranged on the rack, polishing and grinding work can be conducted on the two faces of a propeller blade at the same time, the working efficiency is high, and the working efficiency is high. The auxiliary mechanical arm assists in supporting the clamping mechanical arm in the polishing and grinding process, the rigidity of a machine tool is greatly improved, a rubber wheel is arranged below an abrasive belt of the propeller hub polishing and grinding device, a