Rotating mechanism for measuring snap ring grooves for holes

The invention discloses a rotating mechanism for measuring snap ring grooves for holes. The mechanism is characterized in that a measuring rod is vertically arranged and can perform fixed-axis rotation, a tongue-shaped measuring sheet is fixedly and horizontally arranged at the bottom of the measuring rod, a shifting yoke bar is fixedly and horizontally arranged at the top of the measuring rod, a chute is radially arranged on the shifting yoke bar, a spindle is vertically arranged on the shifting yoke bar, and a shifting block rotating around the spindle as a center drives the measuring sheet to rotate around the measuring rod as a center through a shifting yoke and the measuring rod. The mechanism matches with a snap ring groove measuring system for holes for implementation and can measure the thickness of a gasket of the snap ring groove and improve the one-off pass rate of gasket selection and the assembling efficiency.