Pneumatic thread detector

The utility model discloses a pneumatic thread detection machine, which comprises a rack, a carrier arranged on the rack, a lifting driving unit capable of driving the carrier to lift, a floating type screw tapping structure and a rotation driving unit capable of driving the floating type screw tapping structure to rotate, and the carrier is positioned right below the floating type screw tapping structure; the carrier comprises a connecting seat and a base; the floating type screw tap structure comprises a connecting structure, a connector and a screw tap, the connector is installed on the connecting structure, the screw tap is installed on the connector, the power output end of the rotary driving unit is connected with the connecting structure, and the screw tap is driven by the rotary driving unit to rotate so that the screw tap can be screwed into the threaded hole. According to the utility model, a product is placed on the carrier, the lifting driving unit drives the product to be in place, and the rotati