Auxiliary tool special for stepped shaft forging forming

The utility model relates to an auxiliary tool special for stepped shaft forging forming, and belongs to the technical field of stepped shaft forging in the metallurgical industry. According to the technical scheme, the longitudinal section of the upper half portion of an auxiliary tool body (1) is a right triangle, the longitudinal section of the lower half portion of the auxiliary tool body (1) is a rectangle, a left positioning key (2) and a right positioning key (4) are arranged on the two sides of the lower half portion of the auxiliary tool body (1) respectively, and an auxiliary tool body hoisting hole (3) is formed in the auxiliary tool body (1); a groove is formed in the upper portion of the base (8), the auxiliary tool body (1) is positioned in the groove in the upper portion of the base (8) through the left positioning key (2) and the right positioning key (4), a dovetail positioning structure (11) matched with a forging anvil block (12) is arranged at the bottom of the base (8), and the base (8) i