CNC machine tool is the abbreviation of digital control machine tools, and is an automated machine tool equipped with a program control system. The control system can logically handle programs with control codes or other symbols, and use the decoding to make machine tool movements and processing parts.  
Compared with ordinary machine tools, CNC machine tools have the following characteristics:  
● High processing accuracy and stable processing quality;  
● Multi -coordinate linkage can be performed to process parts with complex shapes;  
● When the processing parts change, it is generally only necessary to change the CNC program, which can save the production preparation time;  
● The machine tool itself has high accuracy and high rigidity. It can choose favorable processing. High productivity (generally 3 ~ 5 times that of ordinary machine tools);  
● High degree of automation of machine tools can reduce labor intensity;  
● High quality requirements for operators and higher technical requirements for maintenance personnel.