Damping device of gantry machine tool accessory swing head library

The invention discloses a damping device of a gantry machine tool accessory swing head library, which relates to the field of precision machine tool equipment and comprises an accessory swing head, a head library, a detection surface, a positioning pin, a position sensor, an I-shaped guide rod, a belleville spring group, a guide mandrel, a first support shaft, a second support shaft, a limiting screw and an elastic force detector, an I-shaped guide rod is installed in the groove channel, a belleville spring set makes contact with the lower end face of the I-shaped guide rod and is fixedly connected with the groove bottom, and an elastic force detector is installed at the groove bottom to detect the elastic force of the belleville spring. Buffering and damping can be achieved when the swing head is put in storage, the positioning accuracy of the swing head in the head storage is improved, the elastic force detector can detect whether the elastic force of the belleville spring set fails or not, the elastic fail