Clamp for shell production

The invention relates to the technical field of machining clamps, and particularly discloses a shell production clamp which comprises a machining table and clamping units, two pipelines are arranged on the machining table, the multiple clamping units are symmetrically arranged in pairs, and each clamping unit comprises a first hydraulic cylinder, a second hydraulic cylinder, a bending arm and a pressing block. A transmission assembly is arranged above the machining table, two connecting pipes are fixedly connected between the first hydraulic cylinder and the second hydraulic cylinder, the two connecting pipes communicate with the two pipelines correspondingly, a rotating frame is arranged above the machining table, and the telescopic end of the second hydraulic cylinder and the rotating frame are rotationally arranged; the multiple clamping units are arranged to clamp the surface of an irregular workpiece to be machined, meanwhile, a first hydraulic cylinder and a second hydraulic cylinder between the multipl