Cylinder wheel train hole automatic measuring system

The utility model discloses an automatic measuring system for a cylinder body gear train hole, which relates to the technical field of engine measurement, and comprises a base, a feeding roller way and a discharging roller way which are fixedly arranged on the base, a first measuring assembly, a second measuring assembly, a third measuring assembly and a fourth measuring assembly, the second measuring assembly comprises a crankshaft hole pneumatic measuring head and a cam shaft hole pneumatic measuring head which are mounted on one side of the base; and the rotating positioning assembly comprises a rotating motor fixedly installed on the base, the output end of the rotating motor is fixedly connected with a rotating frame, a lifting air cylinder is vertically installed on the rotating frame in a sliding mode, and the output end of the lifting air cylinder is fixedly connected with a power roller way. According to the utility model, the cylinder hole, the crankshaft hole and the camshaft hole on the engine cyl