Angle self-setting device for retainer measurement

The utility model relates to an angle self-setting device for retainer measurement, which comprises a bottom plate fixed with a three-coordinate table board; the first bearing is arranged in the middle of the bottom plate, the outer ring of the first bearing is tightly matched with the bottom plate, and the inner ring of the first bearing protrudes upwards to form a stud; the fixing plate is arranged above the bottom plate, and the fixing plate is in threaded connection with the stud and is locked through a locking piece; the second bearing is arranged above the fixing plate; the first supporting plate is arranged above the second bearing, and the fixing plate, the inner ring of the second bearing and the bottom of the first supporting plate are fixed through a first connecting piece; the second supporting plate is arranged above the second bearing, the first supporting plate is sleeved with the second supporting plate, and the outer ring of the second bearing and the bottom of the second supporting plate are