Hollow adjustable blade additive manufacturing method based on combined base plate

The invention relates to a hollow adjustable blade additive manufacturing method based on a combined substrate, which specifically comprises the following steps: establishing a hollow adjustable blade model, and adding machining allowance to obtain a hollow adjustable blade blank model; performing pretreatment to form a printing model; a printing model is arranged at the position, corresponding to the reference block in the combined base plate, of the machining platform; the printing scheme is input into selective laser melting equipment, parameters matched with a to-be-machined material are selected, and blank forming is completed through a combined base plate; the reference block and the base of the combined base plate are separated, the reference block and the blank on the reference block are subjected to powder cleaning, heat treatment and support removal together, and the blank is polished; rough machining is conducted on the blank with the reference block as the reference, machining allowance is removed