Barrel correction system

The utility model belongs to the technical field of suspension arm welding, and particularly relates to a barrel correcting system which comprises two correcting devices symmetrically arranged on the two sides of a barrel in the second direction, the correcting devices are located at the joint of an upper shell and a lower shell of the barrel, and each correcting device comprises a measuring assembly and a correcting assembly. Wherein the measuring assembly comprises a first measuring piece and a second measuring piece which are arranged in a spaced mode in the first direction, and the first measuring piece and the second measuring piece are used for obtaining misalignment position information of the upper shell and the lower shell in the second direction; the correcting assembly adjusts the positions of the upper shell and the lower shell according to the misalignment position information. The side edge of the upper shell and the side edge of the lower shell are accurately measured by arranging the measuring