Axial flow fan impeller cutting adjusting workbench

The axial flow fan impeller cutting adjusting workbench comprises a rack, a moving through groove extending front and back is formed in the left portion of a top plate of the rack, a saw blade cutting device is fixed to the rear wall face of the left portion of the top plate of the rack, and a saw blade of the cutting device is inserted into a transverse through groove in the rear portion of the moving through groove in a sleeved mode; a front-back moving mechanism is fixed to the bottom face of the left portion of a top plate of the rack, a moving block of the front-back moving mechanism is movably connected with an inserting shaft through a bearing, the inserting shaft is inserted into the moving through groove in a sleeved mode, the upper portion of the inserting shaft extends out of the top face of the top plate of the rack and is provided with an impeller to be machined, and the edge of a blade of the impeller corresponds to the saw blade. The blades can be firstly mounted on the impeller, and then the o