Differential shell spherical end face distance detection device

The detection device for the spherical end face distance of the differential mechanism shell comprises a spherical surface positioning column and a plurality of detection cushion blocks I with different thicknesses, the spherical surface positioning column comprises an upper positioning column and a lower positioning column which are in sliding fit, a pressure spring is arranged between the upperpositioning column and the lower positioning column, the upper end surface of the upper positioning column is a positioning spherical surface I matched with the upper spherical surface of the differential mechanism shell, and the lower end surface of the lower positioning column is a positioning spherical surface II matched with the lower spherical surface of the differential mechanism shell; thedetection cushion block I comprises a detection plane I which can be matched with the detection cylindrical surface of the upper positioning column and a placement plane I which is matched with the inner end surface of the dif