Stud welding bending test detection device and detection method

The invention relates to a stud welding bending test detection device and method, the detection device comprises a cylindrical clamp for clamping and fixing a stud and a sleeve sleeving the cylindrical clamp, the length of the sleeve is greater than that of the cylindrical clamp, and the first end of the sleeve is provided with a locking structure for locking the position of the cylindrical clamp; the clamping tool comprises a cylindrical body and a plurality of telescopic clamping needles, and a plurality of inserting holes allowing the telescopic clamping needles to be inserted are formed in the end of the cylindrical body. One end of each telescopic clamping pin is connected to the hole bottom of the corresponding insertion hole through a spring, and the other end of each telescopic clamping pin extends out of the corresponding insertion hole in the reset state of the spring and forms a clamping section used for limiting movement of the toggle pin in the radial direction. According to the invention, the fi