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  本文選題：潤滑脂 + 試驗(yàn)臺�。� 參考：《河南科技大學(xué)》2012年碩士論文

【摘要】：彈流拖動特性作為彈流潤滑理論研究的一個重要領(lǐng)域，它對滾動軸承的動態(tài)性能有著很大的影響，是滾動軸承動態(tài)設(shè)計(jì)的重要參數(shù)之一。在現(xiàn)代軸承設(shè)計(jì)中，潤滑劑已成為軸承的基本元件之一，所以潤滑劑在不同工況條件下的拖動特性也是軸承設(shè)計(jì)當(dāng)中不可缺少的基本設(shè)計(jì)依據(jù)。由于脂潤滑方式廣泛地應(yīng)用于滾動軸承中，通過模擬實(shí)際工況下的表面接觸得到潤滑脂膜在不同工況下的拖動力，是最為可靠的數(shù)據(jù)。所以，在充分供脂的條件下，進(jìn)行潤滑脂拖動特性的試驗(yàn)研究對于軸承的優(yōu)化設(shè)計(jì)具有非常重要的現(xiàn)實(shí)意義。 為了在實(shí)驗(yàn)室條件下模擬出滾動軸承潤滑脂的實(shí)際工況，并能對工況條件進(jìn)行控制，需采用專門研制的高速潤滑脂拖動特性試驗(yàn)臺。試驗(yàn)臺主要包括測試球盤、動力及調(diào)速系統(tǒng)、加載及靜壓主軸的液壓系統(tǒng)、供脂系統(tǒng)、冷卻系統(tǒng)、輔助潤滑系統(tǒng)、測力系統(tǒng)和信號采集系統(tǒng)。依據(jù)現(xiàn)有的試驗(yàn)設(shè)備，本項(xiàng)研究對試驗(yàn)系統(tǒng)做了許多改進(jìn)工作，其中主要對調(diào)速部分和被測脂供脂系統(tǒng)做了較大改進(jìn)，大大提高了測試及控制的精度。借助改良的試驗(yàn)設(shè)備，，對高速潤滑脂7018和LGLT2在不同速度、不同載荷及不同滑差率條件下進(jìn)行了一系列拖動特性測試。得到了兩種潤滑脂的拖動系數(shù)隨滑滾比變化的特性曲線試驗(yàn)結(jié)果。通過考察現(xiàn)有拖動力理論模型，分析所得的試驗(yàn)數(shù)據(jù)，結(jié)果表明大多數(shù)模型與被測脂的試驗(yàn)結(jié)果都有一定的差距，但T-J彈塑模型能較準(zhǔn)確地預(yù)測試驗(yàn)結(jié)果。因此，用T-J彈塑模型對LGLT2潤滑脂進(jìn)行拖動特性的理論分析。結(jié)果證明，它可以在試驗(yàn)范圍內(nèi)較為準(zhǔn)確地預(yù)測拖動特性數(shù)據(jù)，得到了令人滿意的結(jié)果。 本課題完成了對SKF潤滑脂LGLT2拖動特性的測試分析工作，為今后SKF公司開發(fā)新的軸承專用潤滑脂或其它潤滑脂的拖動特性測試奠定了良好基礎(chǔ)。
[Abstract]:As an important research field of EHL theory, EHL drag has great influence on the dynamic performance of rolling bearings and is one of the important parameters in the dynamic design of rolling bearings. In modern bearing design, lubricant has become one of the basic components of bearing, so the drag characteristic of lubricant under different working conditions is also an indispensable basic design basis in bearing design. Because grease lubrication is widely used in rolling bearings, it is the most reliable data to get the traction force of grease film under different working conditions by simulating the surface contact under actual working conditions. Therefore, under the condition of sufficient grease supply, it is of great practical significance to study the drag characteristics of lubricating grease for the optimum design of bearings. In order to simulate the actual working conditions of rolling bearing grease under laboratory conditions and to control the operating conditions, a specially developed high-speed grease drag characteristic test bed is needed. The test bench mainly includes ball disk, power and speed control system, hydraulic system of loading and static pressure spindle, grease supply system, cooling system, auxiliary lubrication system, force measuring system and signal collecting system. According to the existing test equipment, this study has made a lot of improvements to the test system, in which the speed-regulating part and the fat-feeding system have been greatly improved, which has greatly improved the accuracy of the test and control. With the help of the improved test equipment, a series of drag characteristics of high speed grease 7018 and LGLT2 were tested at different speeds, different loads and different slip rates. The test results of the drag coefficient of two kinds of lubricating greases with the slip-roll ratio are obtained. Based on the analysis of the experimental data obtained from the existing towing theoretical models, the results show that most of the models are far from those of the fat test, but the T-J elastoplastic model can accurately predict the test results. Therefore, T-J elastoplastic model is used to analyze the drag characteristics of LGLT2 grease. The results show that the drag characteristic data can be predicted more accurately in the range of test, and satisfactory results are obtained. This paper has completed the test and analysis of the LGLT2 drag characteristics of SKF grease, which has laid a good foundation for the development of new bearing special lubricating greases or other lubricating greases by SKF Company in the future.
【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】：TH133.33;TH117

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