A CNC (computer numerical control) machine is a type of machine tool that uses computer programs to control the movement and operation of the machine. These machines can be used to perform a variety of tasks, such as milling, drilling, turning, and cutting.

The most common type of CNC machine is the CNC milling machine, which is used to create parts with complex shapes and geometries. These machines use a rotating cutting tool to remove material from a workpiece, and are able to create very precise and detailed parts. Other types of CNC machines include CNC lathes, which are used to create cylindrical parts, and CNC routers, which are used to create parts out of materials such as wood, plastic, and metal.

The programs that control the movement of a CNC machine are called G-code, and they are typically generated using computer-aided design (CAD) or computer-aided manufacturing (CAM) software. These programs are then loaded into the CNC machine’s controller, which interprets the code and sends commands to the machine’s motors and other components to move the machine and perform the desired operation.

Overall, CNC machines are powerful tools that can help to automate the manufacturing process, allowing for the creation of precise and consistent parts at a high rate of speed. CNC machines are widely used in various industries like aerospace, automotive, electronics, etc.