Milling machine mainly refers to the machine tool that processes various surfaces of workpiece with milling cutter. Generally, the milling cutter is mainly in rotation, and the movement of workpiece and milling cutter is in feed. It can process plane, groove, also can process all kinds of curved surface, gear and so on.

Milling machine is a kind of machine tool for milling workpiece with milling cutter. In addition to milling plane, groove, gear teeth, thread and spline shaft, milling machine can also process more complex surface with higher efficiency than planer, which is widely used in mechanical manufacturing and repair department.