Rotary positioning device for jewelry accessories

The utility model relates to the technical field of jewelry processing, and provides a jewelry rotary positioning device which comprises a base, a frame body is fixedly arranged on the base, two clamping plates are arranged on the inner side of the frame body in a sliding mode, and driving rods are arranged on the two sides of the frame body in a penetrating mode. The ends, located on the inner side of the frame body, of the two driving rods are fixedly connected with the two clamping plates correspondingly. An annular plate is rotationally arranged on the base, two arc-shaped bosses are symmetrically arranged on the two sides of the inner wall of the annular plate in a central symmetry mode, and the ends, away from the clamping plates, of the two driving rods abut against the arc-shaped faces of the corresponding arc-shaped bosses correspondingly. The jewelry accessory to be machined is straightly placed in the frame body and located between the two clamping plates, then the annular plate is rotated, under t