Bevel gear shaft hole inner end face and pitch cone vertex vertical distance deviation online measuring device

The invention discloses a bevel gear shaft hole inner end face and pitch cone vertex vertical distance deviation online measuring device. The device is composed of an axial displacement linkage mechanism and a tooth die. The axial displacement linkage mechanism comprises a base, a cylinder, a mandrel, a spring, a gauge stand, a dial indicator and a locking screw. The tooth die is in an inverted disc shape, the upward end face of the tooth die is a plane, 3-6 through holes are evenly distributed in the end face, the through holes allow the shaft end, extending downwards, of the mandrel to freely pass through, and an inner bevel gear with the same technical parameters as a measured workpiece is arranged on the downward face of the tooth die. According to the device, a pure mechanical structure design is adopted, the physical property is stable, the requirement on the detection condition is not high, and the axial displacement linkage structure is simple and reasonable, the operation is convenient, and the measu