Variable-thickness lightweight elastic wing skin forming method

The invention belongs to the technical field of precision plastic forming, and particularly relates to a variable-thickness lightweight elastic wing skin forming method adopting an integral superplastic diffusion connection method. According to the variable-thickness lightweight elastic wing skin forming method, outer plates and inner plates of two-layer skin are subjected to diffusion connectionand superplastic forming, a process compensation surface formed in the process of forming reinforcing ribs is subjected to wire cutting to remove process allowance, then forming and manufacturing withdifferent thicknesses are realized in different regions of the skin, and a bending angle of a windward surface is subjected to cold bending. The variable-thickness lightweight elastic wing skin forming method is realized through a novel and reasonable design of the variable thickness reinforced structural skin, the combining diffusion connection, the superplastic forming, the wire cutting and thecold bending. According to