Hub positioning mechanism

The utility model relates to the technical field of automobile hubs and discloses a hub positioning mechanism, a hub positioning assembly comprises two sliding columns and two sliding blocks, grooves are formed in the two ends of the bottom of a second mounting plate, the two sliding columns are fixedly connected to the bottoms of the grooves, the sliding blocks are connected to the outer sides of the sliding columns in a sliding mode, and the sliding blocks are connected to the outer sides of the sliding columns in a sliding mode. The top of the second mounting plate is in threaded connection with a connecting bolt, one end of the connecting bolt is inserted into the groove and movably connected to the top block, a limiting groove is formed in the top of the positioning roller, and a clamping groove is formed in the bottom of the inner side of the limiting groove. When the positioning roller is abraded, a connecting bolt is rotated reversely, so that the connecting bolt drives a top block to be separated fro