1303 非線形軌道法による静圧空気スピンドルの特性解析(軸受,一般講演)

抄録

Recently, larger stiffness and higher accuracy have been strongly required to an aerostatic spindle used for precision machine tools. The aerostatic spindle is usually composed by several aerostatic journal bearings and a couple of thrust bearings, but few reports have been published on the basic performance of an aerostatic spindle system. In this paper, the basic characteristics of the aerostatic spindle system are numerically investigated. In order to obtain the basic characteristics of the aerostatic spindle system, the non-linear orbit method was used. As a result, it was found that the basic characteristics of the aerostatic spindle system were largely affected by the arrangement of aerostatic journal bearings rather than that of aerostatic thrust bearings.