Size and coaxiality measuring device for thin wall rotary part

The utility model relates to a size and coaxiality measuring device for thin wall rotary parts, and belongs to the measuring technology field. An outer framework and an inner framework are respectively and fixedly connected with a pedestal; an inner framework table top is fixedly connected with the inner framework; a servo motor is fixedly connected with the inner framework table top through a speed reducer; a pinion is fixedly connected with a main shaft of the speed reducer and is engaged with a bull gear; the bull gear is fixedly connected with a bearing sleeve; the bearing sleeve is arranged on a hollow main shaft through a bearing; the hollow main shaft is fixedly connected with the inner framework table top; a rear measuring mechanism, a left measuring mechanism and a right measuring mechanism are respectively and fixedly connected with the inner framework table top; an inner measuring mechanism is fixedly connected with the pedestal; and the bearing sleeve is fixedly connected with a work table top. Th