Welding tool for speed reducer machining

The welding tool for speed reducer machining comprises a supporting frame, a servo motor is fixedly connected to the center of one side of the supporting frame, the output end of the servo motor penetrates through the supporting frame and extends into an inner cavity of the supporting frame to be fixedly connected with a rotating rod, one side of the rotating rod is rotationally connected with one side of the supporting frame through a bearing, and the other side of the rotating rod is fixedly connected with the supporting frame. Driving gears are welded to the two sides of the surface of the rotating rod correspondingly, and the surfaces of the driving gears are engaged with half-shaped gears. During use, the speed reducer needs to be overturned and welded, only the speed reducer needs to be fixed through the clamp, after fixing is completed, the servo motor drives the rotating rod to rotate, the rotating rod drives the driving gear to rotate, the driving gear drives the half-shaped gear to rotate, and there