Hub blank mechanical positioning tool

The utility model provides a hub blank mechanical positioning tool, and belongs to the technical field of hub positioning. A transverse positioning groove is formed in the positioning base in the transverse direction, a first threaded hole is formed in the positioning base in the height direction, two vertical positioning grooves are formed in the upper end of the positioning stand column, the sliding positioning block is arranged in the two vertical positioning grooves, a through hole is formed in one end of the sliding positioning block, the fixing bolt penetrates through the through hole, and the spring is arranged on the upper portion of the fixing bolt in a sleeving mode. The bottom of the spring is arranged on the upper surface of the sliding positioning block, and the top of the spring is arranged on the lower surface of the rolling support. Through the arrangement of the structure, the problems that the induction distance of an existing photoelectric sensor is short, a blank is easily clamped, positio