Milling machine mainly refers to the machine tool that uses milling cutter to process various surfaces of workpiece. Generally, the milling cutter is mainly rotary motion, and the movement of workpiece and milling cutter is feed motion. It can process planes and grooves, as well as various curved surfaces and gears.

Milling machine is a machine tool for milling workpiece with milling cutter. In addition to milling plane, groove, gear tooth, thread and spline shaft, milling machine can also process more complex profile, with higher efficiency than planer, which is widely used in machinery manufacturing and repair departments.

Milling machine is a machine tool with a wide range of uses. It can process plane (horizontal plane, vertical plane), groove (keyway, T-shaped groove, dovetail groove, etc.), tooth splitting parts (gear, spline shaft, sprocket), spiral surface (thread, spiral groove) and various curved surfaces. In addition, it can also be used to process and cut off the surface and inner hole of the rotating body. When the milling machine is working, the workpiece is installed on the workbench or indexing head and other accessories. The rotation of the milling cutter is the main motion, supplemented by the feed motion of the workbench or milling head, the workpiece can obtain the required machining surface. Because it is multi edge intermittent cutting, the productivity of the milling machine is high. In short, milling machine is a machine tool that can mill, drill and bore workpieces.