How do CNC machines process parts?

Operating principle of CNC machines:
According to the technical requirements and processing requirements of the part, write the part processing program, and then input the processing program into the CNC device. The CNC device controls the spindle movement, feed movement, tool changing, and clamping and loosening of the workpiece through the CNC device. Cooling and lubrication pumps are turned on and off to ensure that the cutting tool, workpieces and other auxiliary devices operate in strict accordance with the order, path and parameters , specified in the processing program, thereby processing parts that meet the requirements of the drawings.
All control and monitoring of CNC machines is done in this CNC unit which is the brain of the CNC machine.