Shape correcting tool for thin-wall special-shaped casting

A thin-wall special-shaped casting correcting tool is used for correcting a workpiece, and a plurality of protruding columns are arranged on the two sides of the workpiece at intervals. The device comprises a base, a fixed block and a movable block, a fixing block is arranged on one side of the top of the base; a T-shaped sliding groove is formed in the other side of the top of the base, and a plurality of movable blocks in one-to-one correspondence with the protruding columns of the workpiece are slidably connected to the position corresponding to the sliding groove. The top of the fixed block and the top of the movable block are each provided with a semicircular positioning groove capable of being correspondingly matched with a workpiece protruding column. Positioning insertion holes penetrating through the sliding grooves are formed in the two sides, corresponding to the movable block, of the base, and wedge-shaped insertion pins used for enabling the top positioning grooves of the movable block and the co