Composite manufacturing method based on powder bed and five-axis additive and subtractive materials

A composite manufacturing method based on a powder bed and five-axis additive and subtractive materials comprises the steps that model preprocessing is conducted, specifically, model self-adaptive compensation is conducted on the basis of a design model, the compensated model is repaired, and an additive material model is obtained; decomposition and reconstruction are conducted, specifically, the additive model is decomposed to obtain a plurality of sub-models capable of planning an inner surface tool path at a time, and then additive manufacturing and numerical control machining are sequentially and alternately conducted on the sub-models according to the construction sequence till all the sub-models are machined; post-processing: after finishing the combined processing of all the sub-models, removing the supporting structure and milling the outer surface of the part; in addition, after the influence of the powder bed and the support is removed, part of unprocessed internal structures are reprocessed, and fi