Curing forming tool and method for multi-fracture arc-shaped honeycomb sandwich structure

The invention relates to a multi-fracture arc-shaped honeycomb sandwich structure curing forming tool and method, and belongs to the technical field of curing forming of composite material honeycomb sandwich structures. The curing forming tool comprises a forming mold main body, a pressure equalizing plate, a positioning block, a positioning nail, a first splicing strip, a second splicing strip and an edge stop block; by designing a positioning interface on a forming die main body, positioning the forming die main body and a skin by adopting a built-in embedded part, splicing the skin and a honeycomb core in a sectioning manner, mounting a splicing strip to reinforce the splicing position of a folding section, pressurizing by using a thinner pressure equalizing plate and the like, the problem that an arc-shaped curved surface skin extension built-in metal part cannot be accurately positioned is solved; the overall hole site precision of the multi-fracture arc-shaped honeycomb sandwich structure is improved, t