Reversible deformation jig frame with radian adjusting function

The utility model provides a reverse deformation jig frame with a radian adjusting function. The reverse deformation jig frame comprises a positioning frame, a rotating mechanism, an arc plate adjusting mechanism, a clamping mechanism and a welding mechanism. The positioning frame comprises a base and a frame platform. The base drives the frame platform to rotate through the pin shaft supporting assembly and the rotating mechanism. A plurality of arc plate adjusting mechanisms with adjustable arch heights are mounted on the frame platform in parallel at intervals and are used for adjusting thereverse deformation; a clamping mechanism is mounted on the frame platform, and the clamping mechanism tightly presses the plate body on the outer side of the plate unit part through an axisymmetrichydraulic or pneumatic clamping mechanism and a clamp body; the welding mechanism is fixedly supported and mounted on the base; the welding mechanism is provided with a telescopic welding trolley through a sliding rail frame a