The invention discloses thin-walled casing vibration reduction tooling. The thin-walled casing vibration reduction tooling comprises a bracket main body, support rods and
cushion blocks, wherein at least two screw rods are radially and uniformly distributed on the bracket main body in the circumferential direction; the first ends of the support rods are connected with the screw rods; the outer wall surfaces of the
cushion blocks are laminated with the inner wall of a casing; in a range from the inner wall, at the current place, of the casing to the inner wall, corresponding to a
welding boss hole of the casing, of the casing, a ring-shaped
gasket is formed by arranging a plurality of
cushion blocks in a encircling manner; the cushion blocks are rotatably connected with the second ends of the support rods in a clamping manner. During the application, the cushion blocks are laminated on the inner wall of the casing, the support rods are connected with the screw rods on the bracket main body, and the support rods are rotated to ensure that the cushion blocks are supported on the inner wall of the casing, so that a firm and steady support structure is formed in the casing, the
structural rigidity of the thin-walled casing is greatly strengthened, benefit is brought to eliminate the vibration during
cutting, and influences, on parts and knifes, of the vibration are avoided, therebyimproving the
cutting performance of the thin-walled casing, ensuring the precision of bore diameters, preventing pore walls from retraction and improving the
machining surface quality.