Stretch forming apparatus for an aluminum alloy skin

Abstract

The present application relates to skin stretch forming technical field, and disclose a kind of stretch forming equipment for aluminum alloy skin, including rack, the inside of the middle part of the rack is equipped with jacking mechanism, the upper end of the jacking mechanism is connected with discrete die, the both sides of the rack are respectively provided with multiple groups of independent control flexible clamping mechanism, and the flexible clamping mechanism is symmetrically arranged about the discrete die;The flexible clamping mechanism includes stretch assembly and pressing assembly, the stretch assembly is installed on the pressing assembly, and the pressing assembly is installed on the hydraulic caliper for clamping skin edge.The present application is lifted by the lifting movement of multiple independent control punch assemblies in discrete die, combined with the multilayer composite structure of flexible pad layer, can quickly generate any required curved surface shape without replacing the whole die, and the pneumatic adjusting cavity is independently adjusted by each area inflation pressure, effectively compensates the "step effect" between discrete punch.

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