Aviation screw cross recess depth detection device and detection method

The invention relates to an aviation screw cross recess depth detection device and detection method. The detection device comprises a dial indicator, and also comprises a measurement substrate arranged on a zero correction plane, and used for supporting each measurement component; an opening guide liner arranged in the measurement substrate, and used for providing vertical direction guidance for the dial indicator; a tightening milled screw arranged on the side end face of the measurement substrate, and used for fixing the position of the dial indicator; a special measuring head arranged at the end part of the dial indicator and matched with the measurement substrate, and used for assisting the dial indicator for measuring. The detection method comprises the following specific steps of S1,assembling; and S2, detecting. The detection device and detection method provided by the invention are simple, convenient, quick, and ensures the requirements on the manufacturing strength of the cross screw; the detection d