The base adopts the inverted "T" type layout, with high rigidity of the overall structure. The whole process does not produce subversion moment. The base castings are processed by high-precision five-face gantry, which can complete the milling and tapping of the roof with only one clamping, reducing the clamping error and improving the machining accuracy. The screw adopts grouped 60° angular contact ball bearings, double support and pre-stretching to ensure transmission precision. Adopt high-frequency hardened sliding guide rail or heavy-duty high-precision roller guide rail, which can withstand large-load cutting and has good vibration damping. Adopt Taiwan high precision spindle with spindle air curtain protection device to ensure stable spindle precision and long life. CNC rotary table, indexing table and exchange table are optional.