Cutting speed
The choice of cutting speed mainly depends on the material of the workpiece to be machined; the choice of feed rate mainly depends on the material of the workpiece to be machined and the diameter of the end mill. The tool samples of some foreign tool manufacturers are attached with a tool cutting parameter selection table for reference. However, the selection of cutting parameters is also affected by many factors such as machine tool, tool system, shape of the workpiece to be processed, and clamping method. The cutting speed and feed speed should be adjusted appropriately according to the actual situation.
When the tool life is the priority factor, the cutting speed and feed rate can be appropriately reduced; when the chip separation condition is not good, the cutting speed can be appropriately increased.
Down milling
Climb milling helps prevent edge damage and increases tool life. But there are two points to pay attention to: 1. If using ordinary machine tools, try to eliminate the gap of the feeding mechanism; 2. When there is an oxide film or other hardened layer formed by casting or forging on the surface of the workpiece, up-cut milling should be used.
Tool material
The use range and use requirements of high-speed steel end mills are relatively wide, and even if the selection of cutting conditions is slightly inappropriate, there will not be too many problems. Although the carbide end mill has good wear resistance in high-speed cutting, its application range is not as wide as that of the high-speed steel end mill, and the cutting conditions must strictly meet the requirements of the tool.
