A tool for detecting the bouncing degree of an air valve seat ring aperture

The utility model discloses a tool for detecting the bouncing degree of an air valve seat ring aperture. The tool for detecting the bouncing degree of the air valve seat ring aperture comprises a body portion. A left aperture and a right aperture in vertical directions are arranged in the body portion. A pressing screw bolt is arranged in the middle upper portion of the left side aperture of the body portion, and the screw bolt is locked tight by a locking screw nut on the external portion of the body portion. The lower portion of the left side aperture of the body portion is provided with a core shaft which is inserted into the aperture from the bottom up. Point contact between the locking screw nut and the core shaft is realized through a steel ball. The lower portion of the right side aperture of the body portion is in fixed connection with a lever dial gauge through a fastening screw nut and a hexnut. A dial plate of the lever dial gauge orients towards the right. The beneficial effects of the tool for de