Selection of milling cutters for CNC machine tools

CNC machine tools with hard table metal indexable face milling cutters are mainly used for milling flat surfaces. When rough milling, choose a smaller diameter milling cutter because the cutting force is high during rough milling. Choosing a smaller diameter milling cutter can reduce the cutting torque. When precision milling with CNC machine tools, the diameter of the milling cutter should be larger, preferably able to accommodate the entire width of the surface to be machined, in order to improve the accuracy and efficiency of T machining. When the machining allowance of the machine tool is large and uneven, the tool diameter should be selected to be smaller, otherwise, the cutting quality of the workpiece will be affected due to the deep hanging tool mark.
High speed steel end mills are mostly used for machining protrusions and grooves, and are generally not used to machine the surface of the blank, as the hardened layer and sand inclusions on the surface of the blank can accelerate tool wear.
When processing rough surfaces or rough machining holes, end mills or corn milling cutters with cemented carbide inserts can be selected for strong cutting.
When processing the peripheral contour of a flat workpiece, end milling cutter C is often used.
In order to improve the accuracy of groove width increase and reduce the number of tool changes, a milling cutter with a diameter 7 wider than the groove can be used during processing. The middle part of the groove is first milled, and then both sides of the groove are milled using the tool radius compensation function.
When processing three-dimensional surfaces or variable bevel contour shapes, ball end milling cutters, circular milling cutters, drum milling cutters, conical milling cutters, disc milling cutters, etc. are often used.
When the machining allowance is small and the surface roughness requirement is high, surface milling cutters with cubic boron nitride or ceramic inserts can be selected for high-speed cutting on machine tools