Development of a high-speed air bearing spindle

• Autorzy: Ha Y.-H. , Lee D.-W. , Hwang Y.-K. , Lee C.-M.
• Języki publikacji: EN

Abstrakty

EN

This paper investigates an air spindle with both radial and thrust air bearings of newly developing one-directional porous materials. At present, orifice type and porous type are adopted for thrust air bearings. Orifice type thrust air bearing is fabricated by machining several micro-holes on a bearing pad bearing, permeability significantly affected by particle size and machining conditions is an important factor of performance, but it is hard to c porosities is suggested. It has many micro-porosities through axial direction, so stable and plenty of air can be supplied to the thrust bearing pad. A radial air bearing also can be substituted by a radial direction porous bearing as the same reason. In case of driving parts, built-in motor type is widely applied. But it needs additional cooling parts to drop heat from a motor. So application of an air turbine drive with light-weight shaft is suggested and additionally it will reduce fabricating cost.

Słowa kluczowe

EN

aerostatic bearing; metal foam; porous thrust bearing; porous radial bearing

• Wydawca: Wydawnictwo Wrocławskiej Rady FSNT NOT
• Czasopismo: Journal of Machine Engineering
• Rocznik: 2008
• Tom: Vol. 8, No. 4
• Strony: 25--31
• Opis fizyczny: Bibliogr. 6 poz., tab., rys.

Twórcy

autor

Ha Y.-H.

• Pusan National University, Department of mechanical and precision engineering

autor

Lee D.-W.

• Pusan National University, College of nano science and technology

autor

Hwang Y.-K.

• Changwon National University, Department of mechanical design and manufacturing engineering

autor

Lee C.-M.

• Changwon National University, Department of mechanical design and manufacturing engineering

Bibliografia

• [1] STIFFLER A.K., Analysis of the stiffness and damping of an inherently compensated multiple-inlet circular thrust bearing, J. Lubr. Technol, 96(3), 1974, 329-336.
• [2] STIFFLERA K., SMITHD M., Dynamic characteristics of an inherently compensated square gas film bearing, J. Lubr. Technol, 97(3), 1975, 52-62.
• [3] CHENG K, ROWE W.B., A selection strategy for the design of externally pressurized journal bearings, Tribol Int, 28(7), 1995,465-474.
• [4] SUN D. C., Stability of gas-lubricated, externally pressurized porous journal bearings. ASME J Lubr Tech, 1975, 494-505.
• [5] PANZERA T.H., et al., Microstructural design of materials for aerostatic bearings. Cement & Concrete Composites 30, 2008, 649-660.
• [6] KAZIMIERSKI Z., TROJNARSKI J., Investigations of externally pressurized gas bearings with different feeding systems, J. Lubr. Tcchnol, 102(102), 1980, 59-64.