Rolling self-locking core roller die for special-shaped ring forgings

The special-shaped ring forge piece rolling self-locking core roller die comprises a core roller, an inner mold block, a core sleeve and a pressing ring, the inner mold block is installed on the core roller through a core roller key, the upper end of the inner mold block is sequentially sleeved with the core sleeve and the pressing ring, the position, located on the top end face of the pressing ring, of the core roller is provided with a circular-ring-shaped groove, and the pressing ring is arranged in the circular-ring-shaped groove. Two semi-circular rings with tapered outer ring surfaces are clamped in the circular-ring-shaped groove, and tapered rings are fixedly sleeved on the outer ring surfaces of the two semi-circular rings. The die is mainly used for rolling and forming the inner ring surfaces of the special-shaped ring forgings. 本发明公开了一种异形环锻件辗轧自锁芯辊模具，包括芯辊、内型模块、芯套和压环，所述内型模块通过芯辊键安装在芯辊上，在内型模块的上端依次套装有芯套和压环，所述芯辊在位于压环的顶端面处设置有圆环状凹槽，在圆环状凹槽内卡有两个外环面带锥度的半圆环，在两个半圆环的外环面固定套装有锥形环。该模具主要用于异形环锻件的内环面辗轧成形。