CNC gantry milling machines are machined according to instructions given in digital form. At present, the pulse equivalent given by the numerical control device (each output pulse corresponds to the movement of the moving parts of the CNC gantry milling machine) generally reaches 0.001 mm, and the backlash and pitch error of the feed drive chain can be compensated by the numerical control device. Therefore, the CNC gantry milling machine can achieve relatively high accuracy, such as 0.002 ~ 0.001 positioning accuracy of 0.005 mm.

The transmission system and machine tool structure of CNC gantry milling machine generally have high rigidity and thermal stability, and high manufacturing accuracy. The automatic machining method of gantry milling machine can avoid errors caused by human factors of operators. Therefore, processing the same batch of parts, good dimensional flexibility, high precision, and very stable processing quality. For the contour machining of complex parts, the gantry milling machine can avoid local defects on the machining surface by controlling the feed route and feed speed, so as to obtain high accuracy and surface quality.

Although the expensive processing is distributed to each part, the equipment cost of CNC gantry milling machine is higher, but in the case of single-piece small batch production, the use of CNC machining can save scribing time, reduce adjustment processing and inspection time, and directly save production costs. The cost of CNC machining tools is relatively low, and the quality of CNC machining is stable, which can reduce or even avoid the generation of scrap products and reduce production costs. The gantry milling machine has strong versatility and low investment risk. The gantry milling machine has a variety of processes, which is convenient to achieve process centralization, simplify logistics and reduce management costs. CNC gantry milling machine can process complex, high-precision, high value-added parts to achieve high output. Therefore, the use of gantry milling machine can obtain good economic benefits.

CNC gantry milling machines automatically process parts according to pre-programmed programs. In addition to operating the panel, loading and unloading workpieces, intermediate measurement of key processes, and observing the operation of machine tools, operators usually do not need heavy repetitive manual operations, and the labor intensity and tension are greatly reduced. Generally, the production gantry CNC gantry milling machine has good safety protection, and the working conditions of the operators of automatic chip removal, automatic cooling, automatic lubrication and other devices have also been improved accordingly.

The daily maintenance of CNC gantry milling machines, especially some high-precision gantry milling machines, is also very critical. Many common failures are caused by neglecting routine maintenance. If the gantry milling machine is used in accordance with scientific operation guidelines and daily maintenance rules and regulations, many problems can be avoided and economic losses can be reduced.

Generally, CNC gantry milling machines will regularly check the grid voltage of gantry milling machines; Check for no abnormalities before use; Pay attention to the opening of the lubrication system; Pay attention to rail protection and oil maintenance; Timely cleaning up debris on the device; lubrication on the workbench; Turn off the power before leaving work.

CNC gantry milling machines also need to clean the oil circuit, dust blanket, oil filter, and fill or change the oil tank. Check the hydraulic system. Achieve clean oil quality, smooth oil path, no leakage, no abrasion. Check the technical condition of the headstock box, feed box and various components, tighten loose parts, and adjust the mating clearance. Check interlocks and safety devices. The transmission sound is normal, safe and reliable.