Tool jig for clamping exhaust part of turbocharger

The tool jig comprises a circular rotating disc, a connecting shaft is formed in the center of the left end face of the rotating disc, a vertical upper backer is fixed to the upper portion of the right end face of the rotating disc, and a plurality of transversely-arranged positioning holes are formed in the front end face of the upper backer. A plurality of longitudinal studs are fixed to the front end face of the upper backer on the upper side of the positioning hole, a right clamping block and a left clamping block are inserted into the studs of the upper backer in a sleeving mode, and the front ends of the studs penetrate through the right clamping block and the left clamping block to be in threaded connection with fastening nuts; an inclined lower backer is fixed to the right end face of the rotating disc on the lower side of the upper backer, an inclined connecting column is fixed to the front end face of the lower backer close to the left end of the lower backer, a screw is formed on the front end face