CNC stands for Computer number control.It is a kind of machining technology widely used in the manufacturing industry. It can also be said to be the symbol of the manufacturing industry. It is easy to realize multi-axis linkage machining with CNC, such as the machining of curved surfaces.In addition, the CNC can easily realize flexible manufacturing system, in fact, if learn CNC would not be difficult, it can be said that as long as you play mobile phone, can use CNC, just, before learning CNC, it's best to learn the processing principle of conventional machine tools, and drawing with tolerance of what the basic knowledge of mechanical manufacturing, and then say that effect is good.Simply put, the ordinary machine tool is the direct control of the machine tool to process, and CNC is the control of the CNC system to control the machine tool processing, so as to achieve more complex and high-speed processing.