Drilling device of educational wooden spliced toy

The drilling device comprises a rotating head located on a trepanning gun, a drill bit is arranged in the rotating head, a connecting ring is arranged on the outer side wall of the rotating head, a fixing ring is rotatably connected to the end of the connecting ring, and a control device is arranged on the outer side wall of the fixing ring. A plurality of connecting openings penetrating through the side wall are formed in the outer side wall of the fixing ring, the connecting openings are connected with adjusting strips through conversion devices, and clamping devices are arranged on the adjusting strips. According to the toy part clamping device, the multiple annularly-distributed adjusting strips are rotationally connected to the fixing ring, when a toy part is clamped, the control ringis moved downwards, the inclination angles of the adjusting strips are changed, and the toy part is effectively clamped through the abutting balls on the side walls of the adjusting strips; by arranging the adjusting strips