發(fā)布時間：2018-09-11 21:02

【摘要】：本文研究了彈性滾子間油膜的流體動力流潤滑理論，全文主要包括三部分內(nèi)容，即圓錐與平面的間隙公式的推導、兩圓柱和兩正反圓錐滾子的等溫彈流潤滑以及它們的熱彈流潤滑數(shù)值解。 第一部分對圓錐滾子進行幾何分析，推導了圓錐與平面的間隙公式，該公式既適用于圓錐滾子又適用于圓柱滾子。 第二部分是在第一部分的基礎(chǔ)上，以圓錐軸承、圓錐齒輪和斜齒輪為工程背景，研究了兩圓柱和兩正反圓錐滾子的彈流潤滑問題，得到了這些問題的等溫解。進而分析了圓錐錐度、不同的母線修形函數(shù)和修形幅值、滾子間傾角及滾子的端部圓角半徑等參數(shù)對兩圓柱和兩正反圓錐滾子等溫彈流潤滑性能的影響。結(jié)果表明，余弦修形對滾子的潤滑最為有利，而上述參數(shù)的改變均會對滾子中部和端部油膜厚度產(chǎn)生重要的影響。 第三部分以前兩部分為基礎(chǔ)，先對兩同向圓錐滾子的熱非牛頓解、熱牛頓解、等溫非牛頓解和等溫牛頓解做了分析與討論，接下來具體研究了最大Hertz接觸壓力和滑滾比等參數(shù)對兩同向圓錐滾子以及兩反向圓錐滾子的熱非牛頓潤滑狀況的影響。結(jié)果表明，，在本文的參數(shù)范圍內(nèi)，熱效應總是使得接觸區(qū)內(nèi)的潤滑狀況變差，而母線修形和端部修形等措施對改善潤滑性能總是有效的。
[Abstract]:The hydrodynamic lubrication theory of oil film between elastic rollers is studied in this paper. The whole paper mainly includes three parts: the derivation of the gap formula between the cone and the plane. The isothermal elastohydrodynamic lubrication of two cylinders and two positive and inverse cone rollers and their thermal elastohydrodynamic lubrication numerical solutions. In the first part, the geometric analysis of cone roller is carried out, and the gap formula between cone and plane is derived, which is applicable to both cone roller and cylindrical roller. In the second part, on the basis of the first part, the elastohydrodynamic lubrication problems of two cylinders and two positive and negative cone rollers are studied, and the isothermal solutions of these problems are obtained by taking the cone bearings, bevel gears and helical gears as the engineering background. Furthermore, the effects of cone taper, different busbar modification function and modification amplitude, dip angle between rollers and radius of end of roller on the isothermal elastohydrodynamic lubrication properties of two cylinders and two positive and negative cone rollers are analyzed. The results show that cosine modification is most favorable to the lubrication of roller, and the change of the above parameters will have an important effect on the thickness of the oil film in the middle and end of the roller. In the third part, the thermal non-Newtonian solution, thermal Newtonian solution, isothermal non-Newtonian solution and isothermal Newton solution are analyzed and discussed. Then the influence of the maximum Hertz contact pressure and the slip ratio on the thermal non-Newtonian lubrication of two coaxial cone rollers and two reverse cone rollers is studied in detail. The results show that in the range of the parameters in this paper, the thermal effect always makes the lubrication condition in the contact area worse, while the busbar modification and the end modification are always effective to improve the lubricating performance.
【學位授予單位】：青島理工大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH117.2

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