End milling cutter is a kind of CNC milling tool, which is widely used in CNC machine tools. The end mill has cutting knives on the cylindrical surface and the end face, which can be cut simultaneously or separately. This tool is mainly used for surface milling, groove milling, step milling and copy milling. The end mill has the characteristics of high precision, high rigidity and high durability, and its cutting edge is ground and polished to achieve efficient cutting and machining, and the surface quality is high.

The structure of end mill consists of three parts: shank, tool bar and tool head. The handle is used to connect with the spindle of the machine tool, the tool rod is used to support and install the tool head, and the tool head is used to cut the part of the workpiece, which is generally made of carbide or high-speed steel. The number of teeth of the end mill varies from 2 to 16, and the appropriate blade is selected according to the different workpiece materials.

In addition, the end mill can also be divided into integral and combined types according to the different structural forms; According to the different shape of the cutting edge, it is divided into straight edge and spiral edge. The cutter head and cutter bar of the integral end mill are made of the same material, while the cutter head and cutter bar of the combined end mill are made of different materials. The cutting edge of the straight edge end mill is linear, which is suitable for machining plane and step surface. The cutting edge of the spiral edge end mill is spiral, which is suitable for processing threads.

In CNC machine tools, end milling cutters are mainly used for plane or bevel cutting of the workpiece. Because the end mill has the above characteristics and its high efficiency, it is widely used in the mold industry and machinery manufacturing industry.

Please note that when cutting with the end mill, it is necessary to pay attention to the selection of cutting parameters, including cutting speed, reverse milling, etc., as well as the selection of tool materials, which will affect the processing efficiency and processing quality. At the same time, the main deflection Angle of the end mill is 90°, and the force of the tool is mainly radial force in addition to the main cutting force, which is easy to cause the bending deformation and vibration of the tool bar, so it is necessary to pay attention to the stability control in the clamping and cutting process.