Portal double column gantry machining center is in the traditional portal machine tool strong rigidity, symmetrical structure, strong bearing capacity, on the basis of improving the machine tool strong cutting ability and other advantages, and maintain high stability, high precision processing work, the introduction of advanced, rigid, dynamic,international design concept. All use PRO/E 3D design machine tools, finite element analysis of the main structure, optimization of the moving parts design, optimize the reinforcement structure, so that its distribution of uniform and reasonable high quality equipment. 1.The main shaft is equipped with a belt-driven BT50-6000rpm main shaft as standard, and can be equipped with gear heads and electric spindles to meet different processing needs; 2.Bracket, beam and table made of high strength, high quality cast iron. 3.Our spindle has a thermal cooling compensation system to keep the temperature constant.