The result shows that the cutter blade edge radius, edge angle, the linear abrasion and the edge notch depth are main factors affecting its sharpness.

The blade edge position data can be input to the digital control system, which greatly reduce the auxiliary time of tool setting and tool replacing and enhance work efficiency.

The mechanism and real significance of the blade shape modification technology of propeller, as well as the calculation method and technical process for blade edge cutting are briefly introduced.