Thin-wall sleeve supporting device

The utility model provides a thin-wall sleeve supporting device, and belongs to the technical field of machining. The technical problem that an existing thin-wall sleeve workpiece is prone to being clamped and deformed in the clamping process is solved. Thin-wall sleeve supporting device, characterized in that it is characterized in that it comprises, the device comprises a barrel-shaped clampingbarrel, a first slideway, a second slideway and a third slideway which penetrate through the outer wall and the inner wall of the clamping cylinder are formed in the clamping cylinder; a first slidingblock is arranged in the first slideway; a second sliding block is arranged in the second slideway; a third sliding block is arranged in the third slideway; a rotary top wheel is arranged in the clamping cylinder; the rotating top wheel comprises a wheel disc part, a first arc top part, a second arc top part and a third arc top part, a rotating shaft is axially fixed to the center of the wheel disc part and connected with