What are the advantages and disadvantages of CNC machine tools compared with ordinary machine tools?

CNC machine tools have the advantages of high machining accuracy and high machining quality; Multi-coordinate linkage can be carried out, and parts with complex shapes can be processed; When machining parts change, generally only need to change the numerical control program, which can save production preparation time; The machine tool itself has high precision and rigidity, and can choose favorable processing dosage and high productivity (generally 3~5 times that of ordinary machine tools); The machine tool has a high degree of automation, which can reduce labor intensity; Mass production, product quality is easy to control; The shortcomings of CNC machine tools require lower quality of operators and higher technical requirements of maintenance personnel. But its processing route is not easy to control, not as intuitive as ordinary machine tools. Its maintenance is inconvenient and its technical requirements are high. The process is not easy to control.