It is easier to understand what the CNC machine is.The CNC machine offers greater additional flexibility and 

computational capability. In an industrial setting, CNC machines can be combined into entire cells of tooling

machines that can operate independently of each other. They are often driven by completely digital designs,

which eliminates the need for design blueprints to be physically drawn up. Many are capable of running for 

several days without human intervention.

The most common CNC machines are milling machines, lathes, and grinders. Milling machines automatically

cut materials, including metal, using a cutting spindle, which can move to different positions and depths as

directed by the computer instructions. Lathes use automated tools that spin to shape material. They're 

commonly used to make very detailed cuts in symmetrical pieces, like cones and cylinders.

They use coded instructions that are sent to an internal computer, which allows factories to fabricate parts 

accurately and quickly. There are many different types of CNC machines, ranging from drills to plasma 

cutters, so they can be used to make a wide variety of parts.Though most are used industrially in manufacturing, 

there are also hobby versions of most of the machines that can be used in private homes.

In fact, some are so sophisticated that they can contact the operator’s cell phone and send an alert if a malfunction

occurs. These automated features make it possible to produce thousands of parts with minimal supervision, and free 

the operator to perform other tasks.