Adjustable positioning tool

The utility model relates to an adjustable positioning tool which comprises a rotating ring groove body, a fixed mounting plate, a rotating mounting plate and a guide nut, a positioning hole is formed in the wall of the rotating ring groove body, a fixing bolt is arranged in cooperation with the positioning hole, the rotating mounting plate is connected with the rotating ring groove body through the fixing bolt, and the guide nut is arranged on the rotating mounting plate. The rotating ring groove body is fixedly connected with the fixed mounting plate, guide nuts are respectively arranged on the rotating mounting plate and the fixed mounting plate, and jacking screw rods are matched with the guide nuts. The welding fixture has the advantages that a workpiece can be conveniently and quickly clamped and positioned, the welding fixture is mainly used in a welding scene of a steel structure part, the position of the rotary mounting plate can be randomly adjusted by loosening the fixing bolt during use, and then