High-precision tooth indexing clamp for positioning and milling crankset

The high-precision tooth indexing clamp for positioning and milling a crankset. The high-precision tooth indexing clamp comprises a bearing assembly and an adjusting and fixing assembly, wherein the bearing assembly comprises a base, a fixing sleeve, a limiting ring, a sliding sleeve and a rotating disc, the fixing sleeve is installed on the base, the limiting ring is installed on the fixing sleeve, the limiting ring is provided with a plurality of first teeth, the sliding sleeve is installed on the base, the fixing sleeve is provided with a rotating rod, the rotating disc is installed on the rotating rod and provided with second teeth, two first rotating shafts are installed on the inner wall of the sliding sleeve, the adjusting and fixing assembly comprises an air cylinder, a sliding block, a motor, a worm, a worm gear and a fixing block, the air cylinder is installed on the base, the sliding block is installed on the air cylinder, the motor is installed on the base, the worm is rotatably installed on the f