本文選題：高速角接觸球軸承 + 潤滑油��； 參考：《軸承》2017年11期

【摘要】：在4109,4106和4050航空潤滑油油膜拖動特性試驗基礎(chǔ)上,給出了3種潤滑油油膜拖動系數(shù)計算公式,并建立了高速角接觸球軸承非線性動力學微分方程組,采用預(yù)估-校正的GSTIFF變步長積分算法對其動力學微分方程組進行求解。研究了3種航空潤滑油對高速角接觸球軸承保持架運動平穩(wěn)性的影響,結(jié)果表明:對于這3種航空潤滑油,過小或過大的軸承軸向載荷都不利于保持架運動平穩(wěn)性,且隨著軸向載荷的增加,保持架質(zhì)心軌跡由混亂到單圓渦動再到多圓渦動;當軸承承受1 000 N的軸向載荷時,低溫工況下優(yōu)選4109潤滑油,高溫工況下優(yōu)選4106潤滑油;當軸承潤滑油溫度為130℃時,軸承不適合承受過小的軸向載荷,在重載的工況下優(yōu)選4106潤滑油,在輕載的工況下優(yōu)選4050潤滑油,4050潤滑油在輕載的情況下較4109潤滑油適用范圍廣。
[Abstract]:On the basis of the experiments on the film drag characteristics of 4109 and 4050 aviation lubricating oils, three formulas for calculating the drag coefficients of lubricating oil film are given, and the nonlinear dynamic differential equations of high speed angular contact ball bearings are established. A predictor-corrector GSTIFF variable step integral algorithm is used to solve the dynamic differential equations. The effect of three kinds of aviation lubricating oils on the stability of the cage motion of high speed angular contact ball bearings is studied. The results show that the axial loads of the bearings too small or too large are not conducive to the stability of the cage motion for these three kinds of aviation lubricating oils. With the increase of axial load, the cages' centroid trajectory changes from chaos to single circle vortex to multi-circle vortex, when bearing bears 1 000 N axial load, 4109 lubricating oil is selected at low temperature condition and 4106 lubricating oil is selected under high temperature condition. When the temperature of bearing lubricating oil is 130 鈩，

本文編號：1897619