Superplastic forming diffusion connection integral forming mold and method for parts with reinforcing ribs

The invention discloses a superplastic forming diffusion connection integral forming mold and method for parts with reinforcing ribs. According to the part size, the size of a part blank is calculated, the blank is circled to be welded to form a cylindrical blank, a cylinder obtained after mold insert, reinforcing and seal operation finishing is put into a mold cavity, a seal ring is arranged on the mold, after mold assembly, heating is carried out, after the superplastic process is finished, the reinforcing ribs and the cylinder are completely attached to be subject to the diffusion connection process, cooling and mold stripping are carried out, and the cylindrical part with the reinforcing ribs is obtained. By means of the superplastic forming/diffusion connection integral forming technology, the titanium alloy cylindrical part with the reinforcing ribs is formed, the problem that cooling forming of titanium and a titanium alloy is difficult is solved, and it is ensured that the formed part is free of springback, the appearance is accurate and the machining allowance is small; the material utilization rate is improved, the weight of part components is effectively reduced, the working procedure and the cost of assembling connection are reduced, the mold cavity and a part inner cavity are independently sealed, the working procedure needed by the part is further reduced, the cost is reduced, and the time benefits of part machining are improved.