Super-plastic forming diffusion bonding rapid die changing machining method

The invention provides a superplastic forming diffusion bonding rapid die change machining method, and belongs to the technical field of metal material plastic machining, one or more sets of rapid conversion die holders are used, the rapid conversion die holders are movable heating furnaces, a die is placed in the rapid conversion die holders to achieve small-tonnage die assembly pressurization and high-temperature heating, an original superplastic forming equipment heating mode is replaced, and the production efficiency is improved. A superplastic forming die and blank preparation stage before entering the superplastic forming equipment, die cooling after superplastic forming/diffusion bonding or high-temperature part taking and other processes are transferred to the outside of the special forming equipment to be carried out, and preheating of the forming temperature can be carried out in advance; and the time of superplastic forming equipment occupied in the early-stage preparation process and the heating a