No.1007E 2010 Development of High-Precision Air Bearing Spindle |
| Category | TECHNICAL PAPER |
|---|---|
| Author | R. TANASE Mechatronic Systems R&D Dept., Research & Development Center K. OHTSUBO Future technology for next product & Process innovation R&D Dept., Research & Development Center F. SUGIMOTO Mechatronic Systems R&D Dept., Research & Development Center |
| Abstract | We have developed a high-precision air bearing spindle capable of reducing spindle run-out in the axial direction to a few nanometers. Regarding radial bearings, changing the conventional structure has improved stiffness, and regarding axial bearings, an actuator was added to dampen axial-direction vibrations and decrease axial runout. A spindle incorporating these radial and axial bearings was designed, and characteristics were confirmed by numerical analysis. Furthermore, a prototype was manufactured, and performance was validated through experiments. Performance was shown to be superior to that of the conventional spindle. |
| Keyword | air bearing spindle, axial run-out, actuator, control, bearing stiffness, machine tool |
| Reference | M. HIRANO, T. MURAKAMI, M. ABE : Developments in Technologies for Ultra-Precision Machining, Toyoda Koki Technical Review, Vol.45, No.3, (2005) 1.(in Japanese) |
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