Cutter multi-axis linkage mechanism of high-precision numerical control gantry machining center

The invention discloses a cutter multi-axis linkage mechanism of a high-precision numerical control gantry machining center, and belongs to the technical field of gantry machining centers. A cutter multi-axis linkage mechanism of a high-precision numerical control gantry machining center comprises a first plummer block base, a second plummer block base is arranged above the first plummer block base, a steering tray is arranged between the second plummer block base and the first plummer block base, and the second plummer block base is rotationally connected with the first plummer block base through the steering tray. A rail supporting rod is arranged in the second pillow block base. In order to solve the problem that although a multi-shaft linkage structure can achieve multi-angle adjustment operation, precision adjustment of each joint and steering position cannot be accurately controlled in the adjustment process, joint linkage positions of a swing hinge frame, an extension bridge frame and a cutter pipe sha