Clamp for machining rivet head of high-pressure moving blade

The utility model discloses a clamp for machining a rivet head of a high-pressure moving blade, and relates to the technical field of high-pressure moving blade machining. The utility model solves the problems that clamps of different sizes need to be replaced in the existing process of machining rivet heads of high-pressure moving blades of different levels, the blades can rotate during each clamping, and the machined rivet heads are out of tolerance. A blade is placed above a bottom plate, a steam inlet side supporting assembly is arranged between the steam inlet side of the blade and the bottom plate, a steam outlet side pressing assembly is arranged on the steam outlet side of the blade, the steam outlet side pressing assembly presses the steam outlet side of the blade, and an inner arc positioning assembly is arranged on the inner arc side of the blade. The end face of the side, close to the blade, of the assembling inner arc positioning block is machined into a clamp positioning inner arc, the clamp pos