Large container polishing process and device

The invention discloses a large container polishing process and device, belongs to the technical field of polishing equipment, and aims at solving the problems that installation, taking and placing of a shell are inconvenient, and the polishing precision cannot be effectively guaranteed. The large container polishing device comprises a polishing table, a control box is fixedly mounted on the side surface of the polishing table, an upper transverse plate and a sliding device are fixedly mounted on the upper surface of the polishing table, a shell is movably arranged on the upper surface of the polishing table, and a polishing device is fixedly mounted on the upper surface of the upper transverse plate. A large container shell is movably placed on an arc-shaped plate, a clamping device is quickly, accurately and effectively clamped and moved to the outer surface of a first mounting sleeve, then a linkage jacking column rotates and horizontally moves along a third rotating shaft, the shell is fixedly mounted, th