本文關(guān)鍵詞： 關(guān)節(jié)軸承 編織襯墊 摩擦學(xué)行為 磨損機理 粘結(jié)質(zhì)量　出處：《河南科技大學(xué)》2012年碩士論文　論文類型：學(xué)位論文

【摘要】：自潤滑關(guān)節(jié)軸承是在內(nèi)、外圈之間鑲嵌或粘結(jié)一層自潤滑襯墊層，用襯墊層與內(nèi)圈鋼的摩擦來代替內(nèi)外圈直接的鋼與鋼摩擦，從而實現(xiàn)其在航空航天、鐵路機械等領(lǐng)域自潤滑等方面的要求；其主要失效形式是磨損，磨損使關(guān)節(jié)軸承內(nèi)外圈配合間隙增大；也會出現(xiàn)襯墊粘結(jié)不牢而脫落，導(dǎo)致摩擦系數(shù)升高，失去自潤滑功能；而當(dāng)關(guān)節(jié)軸承套圈承受重載時，套圈會產(chǎn)生較大變形，出現(xiàn)關(guān)節(jié)軸承套圈破裂的失效現(xiàn)象。因此，開展關(guān)節(jié)軸承粘結(jié)質(zhì)量、摩擦學(xué)性能及其承載性能的研究，對提高關(guān)節(jié)軸承的使用性能，延長使用壽命有著十分重要的意義。本文以PTFE/芳綸纖維襯墊自潤滑關(guān)節(jié)軸承為研究對象，對不同前處理方法及不同粘結(jié)劑制備的軸承進行剝離強度測試和摩擦學(xué)性能試驗，研究了不同前處理方法、不同粘結(jié)劑及擺動條件對關(guān)節(jié)軸承粘結(jié)質(zhì)量、摩擦學(xué)性能的影響，并分析了自潤滑關(guān)節(jié)軸承的等效應(yīng)力分布、承載變形分布規(guī)律。主要研究工作如下： 通過對不同前處理方法及不同粘結(jié)劑的關(guān)節(jié)軸承進行襯墊剝離試驗，分析了襯墊剝離強度的影響因素規(guī)律。對不同前處理方法及不同粘結(jié)劑的軸承進行了不同擺動頻率和不同擺動方式的摩擦學(xué)性能試驗，探討了前處理方法、粘結(jié)劑及擺動條件等因素對自潤滑關(guān)節(jié)軸承摩擦系數(shù)、磨損量及摩擦溫度的影響。確立了最佳的前處理方法和粘結(jié)劑類型。并對比了國內(nèi)外同型號關(guān)節(jié)軸承的粘結(jié)質(zhì)量以及摩擦學(xué)性能，對現(xiàn)有國內(nèi)關(guān)節(jié)軸承進行了評價。 采用掃描電子顯微鏡(SEM)、能譜儀(EDS)對不同前處理及不同粘結(jié)劑關(guān)節(jié)軸承自潤滑襯墊磨損表面進行了微觀形貌分析，探討了前處理方法、粘結(jié)劑及擺動條件等因素對自潤滑襯墊磨損機理的影響。研究結(jié)果對進一步改善自潤滑關(guān)節(jié)軸承粘結(jié)工藝以及其摩擦學(xué)性能具有一定的參考價值。 利用ANSYS有限元軟件分析了編織襯墊關(guān)節(jié)軸承等效應(yīng)力分布狀態(tài)，得到了關(guān)節(jié)軸承最大等效應(yīng)力以及最大位移變形；并用試驗結(jié)果驗證了數(shù)值模擬承載變形的正確性和準(zhǔn)確性。數(shù)值分析結(jié)合實際試驗驗證，，為自潤滑關(guān)節(jié)軸承配副摩擦學(xué)性能與摩擦磨損機制轉(zhuǎn)變提供了可靠依據(jù)。
[Abstract]:Self-lubricating joint bearings are embedded or bonded a layer of self-lubricating liner between the outer ring and the outer ring. The friction between the inner ring and the inner ring steel is used to replace the direct steel friction between the inner ring and the outer ring so as to realize the friction between the inner ring and the outer ring in the aeronautics and astronautics. Railway machinery and other areas of self-lubricating requirements; The main failure form is wear and wear, which makes the joint bearing inner and outer ring fit clearance increase. It will also appear that the gasket is not firmly bonded and falls off, resulting in the increase of the friction coefficient and the loss of self-lubricating function. However, when the joint bearing ring is under heavy load, the ring will be deformed and the failure of joint bearing ring will occur. Therefore, the bond quality, tribological performance and bearing capacity of the joint bearing will be studied. It is of great significance to improve the performance of joint bearings and prolong their service life. This paper takes PTFE / aramid fiber liner self-lubricating joint bearings as the research object. The peeling strength and tribological properties of the bearings prepared by different pretreatment methods and different binders were tested. The bond quality of the joint bearings was studied with different pretreatment methods, different binders and swing conditions. The influence of tribological properties, and the distribution of equivalent stress and load deformation of self-lubricating joint bearings are analyzed. The main research work is as follows: The peeling tests of joint bearings with different pretreatment methods and different binders were carried out. The influence factors of the peeling strength of the liner are analyzed. The tribological performance tests of bearings with different swing frequencies and different swing modes are carried out with different pretreatment methods and different binders, and the pre-treatment methods are discussed. The friction coefficient of self-lubricating joint bearing is affected by binder and swing condition. The effects of wear amount and friction temperature on the adhesion quality and tribological properties of the same type of joint bearings at home and abroad were compared. The present domestic joint bearings are evaluated. Scanning electron microscope (SEM) and energy spectrometer (EDS) were used to analyze the wear surface of self-lubricating liner of different pre-treated and different binder joint bearings, and the pre-treatment method was discussed. The effects of binder and swing conditions on the wear mechanism of self-lubricating liner are discussed. The results have some reference value for further improving the bonding process and tribological properties of self-lubricating joint bearings. The equivalent force distribution of braided pad joint bearing is analyzed by using ANSYS finite element software, and the maximum equivalent stress and the maximum displacement deformation of the joint bearing are obtained. The correctness and accuracy of the numerical simulation are verified by the experimental results, and the numerical analysis is combined with the actual test to verify the correctness and accuracy of the numerical simulation. It provides a reliable basis for the tribological properties and the transformation of friction and wear mechanism of self-lubricating joint bearings.
【學(xué)位授予單位】：河南科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH133.3

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