| 摘要 |
PROBLEM TO BE SOLVED: To provide an air spindle preventing occurrence of vibration. SOLUTION: A face on which air for driving a rotor 1 of the air spindle abuts is a smooth face 1a. Air for driving is injected in the direction in which the rotor 1 is rotated at a predetermined angle for the smooth face 1a from a nozzle. The rotor 1 rotates due to viscosity of air. The rotor 1 has faces 1c, 1e constituting a hydrostatic air bearing receiving it in a housing and a bracket constituting the spindle. Since air for driving injected from the nozzle is sprayed on the smooth face 1a, this air spindle has no blade as a conventional air turbine spindle, and there is nothing crossing air jet stream, thereby causing no vibration. Blade machining is unnecessary, and this air spindle can be manufactured at low cost. Since vibration does not occur, machining by use of this air spindle can realize highly precise machining. COPYRIGHT: (C)2005,JPO&NCIPI
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