The UltraMill is a rugged, reliable design for creating surfaces using elliptical vibration assisted machining. It has two major advantages over previous designs; first, the elliptical motion has a significant vertical component that can be used to control the thickness of the chip; and second, motion of the tool is below the first natural frequency so the speed is easily adjustable from 1-5 KHz. This device has been used to machine a variety of materials, from aluminum to plastics to SiC. It can produce optical quality surfaces and the accompanying tool wear for difficult to machine materials steel and ceramics - is less than conventional diamond turning.
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