CNC milling machine axes are moved by what type of motors?

CNC milling machines use high-precision control systems to achieve accurate positioning and movement of the machine's axes. The correct answer indicates that servo motors are commonly used for this purpose because they provide precise control over the position, velocity, and acceleration of the axes.

Servo motors are equipped with feedback mechanisms, such as encoders, which allow the system to continuously monitor and adjust the position of the machine in real-time. This capability is essential for tasks that require high levels of accuracy, such as milling intricate patterns or shapes. The use of servo motors enables smooth and rapid movements, which enhances productivity and leads to a better-quality finished product.

In contrast, while stepping motors can be used in some CNC applications, they typically offer less precision and speed compared to servo motors. AC and DC motors generally lack the necessary feedback mechanisms that are crucial for the precision required in CNC milling, making them less suitable for this specific application. Thus, servo motors are favored in CNC milling due to their capability of providing controlled and precise movements.