The term CNC stands for ‘computer numerical control’, and the CNC machining definition is that it is a subtractive manufacturing process that typically employs computerized controls and machine tools to remove layers of material from a stock piece—known as the blank or workpiece—and produces a custom-designed part.
The basic CNC machining process includes the following stages :-
Designing the CAD model.
Converting the CAD file to a CNC program.
Preparing the CNC machine.
Executing the machining operation.