Concave spherical surface-lapping mechanism

The utility model relates to a concave spherical surface-lapping mechanism. The concave spherical surface-lapping mechanism is characterized in that: the concave spherical surface-lapping mechanism comprises a rotary shaft, a three-jaw chuck, a lapping ring and a lapping ring damperdamping device, the three-jaw chuck is used for clamping a concave spherical ring, and is mounted on the rotary shaft, and the rotary shaft can drive the three-jaw chuck and the clamped concave spherical ring to rotate together; the lapping ring is obliquely placed on the concave spherical surface of the concave spherical ring, and the arrises of the outer cylinder of at the bottom of the lapping ring are in sufficient contact with the concave spherical surface of the concave spherical ring; the lapping ring damper damping device acts on the lapping ring, and by means of the lapping ring damperdamping device, the lapping ring and the concave spherical ring can make differential lapping motions. The concave spherical surface-lapping