歯車潤滑の基礎研究 : 第3報, 動力循環式歯車試験機による潤滑性能試験

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タイトル別名
  • Faundamental Research on the Gear Lubrication : 3rd Report, The Gear Lubricating Performance Test with Power Circulating System
  • ハグルマ ジュンカツ ノ キソ ケンキュウ 3

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For the purpose of improving lubricating performance on the gear-tooth surface, the authors investigated the relationships of lubrication properties to the driving conditions and the lubricating methods with the gear lubricating tester used a power circulating system with which the frictional moment and the oil-film thickness between gear-teeth were measured. The lubricating characteristics have been classified by the values of the dimentionless parameter ηvr/P^-n as follows : boundary lubrication ≤5×10-6≤ semi-fluid lubrication ≤5×10-4≤ fluid lubrication. Owing to the effects of the discontinuous contact, the dynamic load, the variation of frictional direction and the surface roughness on the gear-tooth surface, the frictional coefficient is larger and the oil-film thickness is smaller than those obtained respectively on the roller surface which was considered in the equivalent condition to the gear-tooth surface. The agitating resistance in the oil-bath lubrication is much influenced by the oil viscosity, the rotating speed and the oil amount.

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