The gantry machining center refers to the machining center in which the axis of the Z axis of the main shaft is perpendicular to the worktable. Especially suitable for machining large workpieces and workpieces with complex shapes. There are fixed beam type (beam fixed, worktable moving/rotating), moving beam type (beam moving up and down, worktable moving back and forth), moving column type (worktable fixed, gantry moving), crane type (worktable fixed, cross beam Mobile) There are also multiple types of gantry machining centers in the above composite form. Gantry machining center adheres to the characteristics of traditional gantry machine tools with strong rigidity, symmetrical structure and high stability. Through finite element analysis, the structure of basic components is optimized, the dynamic performance of products is improved, and the perfect combination of high power, high torque, high efficiency and high precision machining is realized. It is suitable for large and heavy processing fields such as ships, metallurgy, petrochemicals, mining machinery, electric energy, plastic machinery, construction machinery, and heavy industry machinery.