Hardening positioning jig suitable for annular product

The hardening positioning jig suitable for the annular products comprises a handle, a cover, a magnet, a supporting rod, a base and a supporting rod, the supporting rod is connected with the base, the base is provided with the annular products, the base is further provided with chucks, the chucks are arranged between the annular products, the chucks can support the interiors of the annular products, the chucks are connected with the supporting rod, and the supporting rod is connected with the cover. A first magnet is arranged at the upper end of the supporting rod, a cover is arranged above the annular product, a second magnet is arranged in the cover, the upper surface of the first magnet and the lower surface of the second magnet are different in pole, and a handle is connected above the cover through screws. Through the magnetism of the magnet, the cover and the supporting rod can also achieve the adsorbable and attachable performance through being separated by a product made of other materials and having