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Ultrahigh-Speed Micro-Milling End Mill with Shank Directly Supported by Aerostatic Bearings
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We propose a new machining method in which an end mill cutter is directly
supported by aerostatic journal and thrust bearings, and driven by air turbines to
achieve high rotational speeds. We found that the proposed micro end mill spindle
with a 4 mm shank could rotate at 400,000 min-1 and cut grooves with depths of 30
ƒÊm to 40 ƒÊm on an aluminum alloy surface.
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