Gradually, CNC milling machines are gradually subdivided according to factors such as product processing and material, and low-speed CNC and high-speed CNC appear. The typical feature of low-speed CNC is the low spindle speed, which is generally 8000 rpm (mechanical spindle), which is suitable for rough machining of large workpieces and a large amount of cutting; the typical feature of high-speed CNC is the high spindle speed, which is generally 24,000 rpm (electrical spindle). Spindles, direct-connected spindles, etc.), suitable for the processing of high-precision, high-finish products; in recent years, the development of high-speed CNC has begun to progress towards automation, basically equipped with automatic tool setting device, automatic lubrication system, automatic Tool change magazines, etc., to reduce the rising labor costs; in addition, there are some automation directions, such as automatic production lines, which use robots to transport materials, robots to load and unload workpieces and other intelligent management.
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