CNC stands for computerized numerical control. It is the name of an electronic control system for machine tools (CNC machines). It was developed in the mid-1960s and has been used over the years to streamline serial and individual production by making the axles and tools move much faster while still achieving the same level of precision. Almost all modern, newly developed machine tools are equipped with CNC controls.
With the use of CNC machines, it has become possible to process complex shapes in two or three dimensions. The high speed and precision of the processing steps makes it possible to produce serial parts without human input. The repeat accuracy of this process is extremely high, which means that production variations can be almost eliminated.