The utility model relates to the technical field of ring rolling
machine, especially a double
station ring rolling
machine for rolling and expanding
metal ring body, which comprises a rack, a sliding seat, a pushing oil cylinder, a rolling mechanism, a rotating motor for driving the rolling mechanism to rotate, a support roller body rotatably arranged on the rack below the rolling mechanism, the support roller body is used for supporting the ring body and realizing rolling and expansion in cooperation with the rolling mechanism, the rack is in an inclined state with an inclination angle of 5-30 degrees to realize independent support of the
metal ring body by the support roller body, the support roller body comprises a first roller part close to the rack and a second roller part outside the first roller part, the
diameter of the second roller part is smaller than that of the first roller part, and the rolling mechanism comprises a first rolling part matched with the first roller part and a second rolling part matched with the second roller part. The utility model solves the technical problem that the existing ring rolling
machine cannot flexibly adapt to the rolling requirements of different parts of the
metal ring body.