CNC machines are computer-controlled machines that are used for cutting, drilling, milling, and other machining processes. They are used for producing high-precision parts for a variety of industries, including aerospace, automotive, consumer goods, medical, and electronics. CNC machines are typically equipped with a controller which allows for the programming of the machine's movements and other processes. CNC machines are capable of producing highly accurate parts and components with minimal human intervention. They are also able to produce complex parts and components with a high degree of efficiency and accuracy.