精密機器スピンドル用スパイラル溝付ジャーナル軸受の溝諸元の最適化に関する一考察 : 第1報, 非圧縮性流体軸受における同期振れ振幅低減のための指針(機械要素, 潤滑, 工作, 生産管理など)

概要

論文の詳細を見る
Spiral-grooved bearings have lately attracted considerable attentions as better substitutions for current ball bearings, especially in motor spindles of precision equipments such as hard disk drive systems. In this paper, optimum designs of the groove dimensions of the spiral-grooved journal bearings specialized for a reduction of amplitude of the operating repeatable run-out (RRO), which is a major characteristic to be considered for applications to precision equipments, are theoretically discussed. The operating RRO of the bearing is formulated in a kinematical model in this study to be attributed to an unbalanced rotor mass, so that an evaluation index concerning the amplitude of the RRO is proposed. Theoretical results show that the appropriate groove designs, which make the proposed evaluation index to be minimum, can improve the RRO performances several times as good as the currently recommended groove design.
社団法人日本機械学会の論文
2006-01-25