Multi-angle positioning rotary table

The utility model discloses a multi-angle positioning rotary table. The multi-angle positioning rotary table comprises a rack, the rotary assembly is arranged on the rack; the synchronous belt conveying assembly is arranged on the rotary assembly; and the supporting roller wheel assemblies are arranged on the rotary assembly and at the two ends of the synchronous belt conveying assembly. According to the multi-angle positioning rotary table, the rotary assembly, the synchronous belt conveying assembly, the supporting roller assembly, the guide assembly and the positioning air cylinder assembly are arranged, when the multi-angle positioning rotary table is used, a braking type rotary motor in the rotary assembly drives a rotary supporting bearing to rotate through a gear and a gear ring which are meshed with each other, and the rotary supporting bearing drives a bottom plate to rotate; the positioning air cylinder assembly provides braking positioning and achieves arbitrary rotation at a plane angle, a rotatin