Gantry type X-Z main shaft component structure capable of achieving automatic tool changing function

The utility model provides a gantry type X-Z main shaft component structure capable of realizing an automatic tool changing function, which is characterized by comprising a gantry frame, the Z-axis main body comprises a truss, and the truss is arranged on the portal frame through a first linear module, so that the truss moves in the Z-axis direction; the X-axis main body comprises a main shaft mounting base plate, and the main shaft mounting base plate is arranged on the truss through a second linear module, so that the main shaft mounting base plate moves in the X-axis direction; the main shaft body comprises a main shaft motor arranged on the main shaft mounting base plate, the main shaft motor drives an integrated main shaft mounted on the main shaft mounting base plate, the integrated main shaft is provided with a positioning sensor and a cutter detachably connected with the integrated main shaft, and the cutter is detachably connected with the integrated main shaft through the positioning function of the