Fan blade forming method

The invention discloses a fan blade forming method. The fan blade forming method comprises the following steps: firstly, designing blade layout and an inclination angle on a plate with a fixed size by adopting a modeling layout mode; cutting but not cutting off the plate through a cutting machine, synchronously carrying out edge rolling operation on the plate, the plate and the blade, realizing arc-shaped forming of the blade through an edge rolling procedure, and then realizing obtaining of a single blade in a cutting or external force knocking manner; and the obtained blade is subjected to surface treatment and then is integrally welded with the blade fixing cylinder. The torsion resistance and the arc radian of the blade obtained through the forming method are flexible and adjustable, and performance improvement is facilitated; the device is not limited by a blade profiling mold, can be adjusted according to performance requirements, and is flexible and convenient; the disassembly and replacement of the bl