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Concept of High-Speed Cutting:High-Speed Cutting technology (HSC or HSM) is not simply about high cutting speeds, but rather it is a very large and complex system engineering, which encompasses the research and selection technology of machine tool materials, machine tool structure design, and manufacturing technology, high-performance CNC control systems, communication systems, high-speed, high-speed cooling, VNMG Insert high-precision, and high-power spindle systems, high-precision rapid feed systems, high-performance tool holding systems, high-performance tool materials, tool structure design, and manufacturing technology, efficient and high-precision testing and measurement technology, high-speed cutting mechanisms, high-speed cutting processes, programming software and programming strategies suitable for high-speed machining, and many other related hardware and software technologies. Only based on the full development of these technologies can high-speed cutting technology have true meaning.High-Speed Cutting Process: The processing technology is one of the key technologies for successful high-speed cutting. The high-speed cutting process technology includes the selection of cutting parameters, cutting paths, and the selection of tool tungsten carbide inserts materials, and tool geometric parameters.(1) Selection of Cutting Parameters This includes the direction of the tool approaching the workpiece, the angle of approach, the direction of movement, and the cutting process (up milling or down milling).(2) Selection and Optimization of Cutting Paths The optimization of cutting paths aims to improve the durability of the tool, improve cutting efficiency, obtain minimal machining deformation, improve machine tool utilization, and fully realize the advantages of high-speed cutting.(3) Selection of Tool Materials The reasonable selection of tool materials follows the following principles: 1. The mechanical properties of the cutting tool material should match those of the workpiece material, mainly referring to the mechanical properties of the strength, toughness, and hardness of the workpiece material.The hardness order of tool materials is: PCD > PCBN > Al2O3-based ceramics > Si3N4-based ceramics > TiC(N)-based hard alloys > WC-based ultra-fine grain hard alloys > high-speed steel (HSS). The bending strength order of tool materials is: high-speed steel (HSS) > WC-based ultra-fine grain hard alloys > TiC(N)-based hard alloys > Si3N4-based ceramics > Al2O3-based ceramics > PCD > PCBN. The order of magnitude of fracture toughness is:high-speed steel (HSS) > WC-based ultra-fine grain hard alloys > TiC(N)-based hard alloys > PCBN > PCD > Si3N4-based ceramics > Al2O3-based ceramics.Tools with excellent high-temperature mechanical properties are particularly suitable for high-speed cutting.
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