Principle of CNC Machine Tools

The principle behind CNC machine tools involves a combination of digital control and mechanical operation. A CNC machine consists of a machine tool (such as a milling machine, lathe, or grinder) and a control system. The control system interprets the digital instructions from the programmed code. These instructions are typically in a format like G - code or M - code. The G - code controls the geometric movement of the tool relative to the workpiece, such as linear and circular interpolation. The M - code manages machine functions like spindle speed, coolant on/off, and tool changes. The control system then sends electrical signals to the machine's motors and actuators to precisely move the cutting tool along the programmed path and perform the desired machining operations on the workpiece.