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The reason why high-speed machining has become more and more widely used in the manufacturing industry is because it has significant advantages over traditional machining methods. Specifically, it has the following characteristics:
1. Increased Productivity The increase in spindle speed and feedrate during high-speed cutting can increase the material removal rate. Compared with traditional machining techniques, high-speed machining spindles have high rotational speeds, high cutting feed rates, and small amounts of cuts, but the amount of material removed per unit of time has increased by several times. At the same time, high-speed cutting can be processed hardened parts, many parts can complete a rough set, semi-finish and finishing all processes, and complex surface processing can also directly meet the parts surface quality requirements, thereby greatly improving the processing productivity.
2. Improved machining accuracy and surface quality High-speed cutting machining is highly accurate. High-speed cutting machine tools must have high rigidity and high-precision performance, and at the same time due to low cutting force, small thermal deformation of the workpiece, small depth of cut, rapid feed rate, small surface roughness, and Ra0 when cutting aluminum alloys. .4~0.6, up to Ra0.2~0.4 when cutting steel.
3. Reducing the Heat Generated by Cutting In high-speed cutting, most of the heat generated in the cutting process is carried away by the chips rather than being transferred to the workpiece. Therefore, the temperature rise of the workpiece is low, thermal deformation and thermal expansion are small, and the workpiece can be effectively reduced. Thermal deformation.
4. Reduced cutting forces Due to the use of shallower depths of cut and narrower cutting widths for high-speed cutting, cutting forces can be reduced by at least 30% compared to conventional cutting. This can reduce the machining distortion for parts with poor machining rigidity, making it possible to cut some thin-walled fine parts.
5. Partially replacing certain processes Conventional machining cannot process quenched materials. Quenching distortion must be manually trimmed or solved by electrical discharge machining. High-speed cutting can directly process the quenched material. In many cases, EDM machining, manual grinding and other processes can be completely eliminated, the surface hardening problems caused by electric discharge machining can be eliminated, and artificial finishing can be reduced or eliminated. , shorten the process route.
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