Electromagnetic riveting device for large-size thin-walled workpiece and riveting method

The invention relates to an electromagnetic riveting device for a large-size thin-walled workpiece and a riveting method. Primary electromagnetic riveting equipment in the market at present has the problems that the riveting equipment is complex in structure, low in efficiency, high in processing cost, unstable in riveting quality, large in labor intensity, only suitable for some workpieces of simple structures, is great in recoil force and the like, and is limited greatly in practical engineering applications. The electromagnetic riveting device comprises a bottom plate. A group of strut screws are fixed to the bottom plate, a bracket system and an upper plate are mounted on the strut screws, the bottom of the upper plate is connected to a connecting seat, the connecting seat is arrangedon the outer side of an upper pressure block of a spring in a sleeving manner, the upper pressure block of the spring is fixedly mounted on a center guide bar, a reset spring is arranged between the upper pressure block of th