Radial supporting tool for special-shaped ring piece

The utility model relates to the technical field of special-shaped ring machining, and discloses a radial supporting tool for a special-shaped ring, which comprises a base, a first supporting assembly and two groups of second supporting assemblies, the first supporting assembly and the second supporting assemblies are mounted on the base, and the first supporting assembly comprises a first supporting rod, an adjusting handle, a lower adjusting block and an upper adjusting block. The two first supporting rods are symmetrically arranged on the upper adjusting block, the lower adjusting block is arranged below the upper adjusting block, the upper adjusting block is matched with the lower adjusting block through an inclined face, the adjusting handle is connected with the lower adjusting block through threads, and the two second supporting assemblies are symmetrically arranged on the two sides of the first supporting assemblies. Each second supporting assembly comprises a fixing block and a second supporting rod,