本文選題：推力滾針軸承 + 失效��； 參考：《華南理工大學(xué)》2013年碩士論文

【摘要】：推力滾針軸承廣泛應(yīng)用于機械電子儀器，電動工具，汽車，機床變速箱等機械設(shè)備中。作為關(guān)鍵零部件，推力滾針軸承的壽命，直接關(guān)系到整機的壽命。隨著儀器等設(shè)備工業(yè)的發(fā)展，機器的運轉(zhuǎn)速度和載荷不斷的提高。對推力滾針軸承的要求越來越高。 本論文計劃建立推力滾針軸承的彈性流體動壓潤滑的數(shù)學(xué)模型，利用FORTRAN程序，對推力滾針軸承進行數(shù)值計算。以此從理論上來分析該推力滾針軸承的工作狀況。同時設(shè)計相應(yīng)的試驗方案來驗證，由于該壽命測試耗費時間較長，如果用額定載荷和轉(zhuǎn)速來做測試6000小時，8個多月的時間，那么需要的研究周期太長，滿足不了工程上的實際需要。鑒于實際情況，做加速測試實驗。加大測試負(fù)載，使得軸承快速失效。 主要完成以下幾部分內(nèi)容： 第一分介紹該軸承的工作狀況，失效的形式。在此基礎(chǔ)上提出該論文的研究內(nèi)容。 第二部分建立推力滾針軸承的彈性流體動壓潤滑的數(shù)學(xué)模型，主要包含雷諾方程，潤滑油粘-溫關(guān)系，，密溫關(guān)系，油膜厚度方程，能量方程，能量方程和彈性變形方程，以及他們的邊界條件。 第三部分通過計算機求解方程的結(jié)果。分析載荷，轉(zhuǎn)速，潤滑油對軸承性能的影響。 第四部分對該推力滾針軸承進行受力分析。 第五部分通過設(shè)計加速試驗裝置來檢測軸承整個運行過程中的一些數(shù)據(jù)，如溫度，扭力，噪音等相關(guān)的參數(shù)來監(jiān)控軸承運行的異常行為。來判斷在不同的潤滑條件及載荷下，軸承的工作狀態(tài)。 第六部分總結(jié)本論文的工作內(nèi)容，最后提出可能的改善方案來滿足實際使用要求。指出下一步工作方向。 該項目將會用到一系列的分析和計算軸承潤滑及壽命的方法，為今后該類型的研究試驗提供充實的理論依據(jù)和試驗數(shù)據(jù)為不斷提高推力滾針軸承的壽命和可靠性建立一定的科學(xué)技術(shù)基礎(chǔ)。
[Abstract]:Thrust needle roller bearings are widely used in mechanical and electronic instruments, electric tools, automobiles, machine tool gearboxes and other mechanical equipment. As a key component, the life of thrust needle roller bearing is directly related to the life of the whole machine. With the development of the equipment industry, the speed and load of the machine are increasing. The demand for thrust needle roller bearings is getting higher and higher. In this paper, a mathematical model of elastohydrodynamic lubrication of thrust needle roller bearing is established, and the numerical calculation of thrust needle roller bearing is carried out by using FORTRAN program. The working condition of the thrust needle roller bearing is analyzed theoretically. At the same time, a corresponding test scheme is designed to verify that because the life test takes a long time, if the rated load and rotational speed are used to do the test for 6000 hours, more than 8 months, then the research period needed is too long. It does not meet the practical needs of the project. In view of the actual situation, do the accelerated test experiment. Increase the test load and make the bearing fail quickly. The main contents are as follows: The first part introduces the working condition and failure form of the bearing. On this basis, the research content of this paper is put forward. In the second part, the mathematical model of elastohydrodynamic lubrication of thrust needle roller bearing is established, which includes Reynolds equation, viscosity temperature relation, density temperature relation, oil film thickness equation, energy equation, energy equation and elastic deformation equation. And their boundary conditions. The third part is the result of solving the equation by computer. Analyze the effect of load, speed and lubricating oil on bearing performance. In the fourth part, the force of the thrust needle roller bearing is analyzed. In the fifth part, some parameters such as temperature, torsion, noise and so on are designed to monitor the abnormal behavior of the bearing. To determine the working state of the bearing under different lubrication conditions and loads. The sixth part summarizes the work of this paper, and finally puts forward the possible improvement plan to meet the practical requirements. Point out the direction of the next step. The project will use a series of methods to analyze and calculate the lubrication and life of bearings. It provides sufficient theoretical basis and experimental data for the future research and test of this type of thrust needle roller bearing, and establishes a certain scientific and technological basis for increasing the life and reliability of thrust needle roller bearing.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TH133.3;TH165.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 于玫;黃平;;線接觸彈流脂潤滑的數(shù)值分析及其應(yīng)用[J];軸承;2010年07期

2 于玫;黃平;;線接觸脂潤滑熱彈性流體動力潤滑數(shù)值分析[J];軸承;2011年01期

3 鄧?yán)?于玫;黎桂華;劉小康;黃平;;脂潤滑輪轂軸承彈流潤滑數(shù)值分析[J];潤滑與密封;2009年10期

4 杜蕃;;軸承的失效分析及主動維護[J];中國新技術(shù)新產(chǎn)品;2012年05期

本文編號：1823013