【摘要】：隨著機械工業(yè)的發(fā)展,諸多應用領域對滾動軸承的旋轉精度提出了越來越高的要求。滾動軸承的旋轉精度既體現(xiàn)軸承運轉時的工作性能,也反映了制造精度。因此,對滾動軸承旋轉精度的影響因素及變化規(guī)律進行分析,在此基礎上預測軸承的旋轉精度,研究結果對軸承的設計制造具有指導意義。 本文以圓柱滾子軸承為研究對象,首先分析了圓度、波紋度等幾何精度和工況條件對軸承旋轉精度的影響,從影響旋轉精度的諸多因素中選擇內圈滾道幾何參數(shù)、結構參數(shù)及徑向載荷進行重點分析。根據(jù)軸承零件的運動幾何關系,分別建立自由狀態(tài)和載荷條件下圓柱滾子軸承的數(shù)學模型,詳細闡述了算法原理及步驟,利用Visual C++軟件編制相應的程序,對圓柱滾子軸承的運動狀態(tài)進行數(shù)值仿真和模擬,并通過特殊點法驗證了程序的正確性。然后分析了內滾道圓度誤差值、諧波階次、滾子個數(shù)、徑向游隙,以及徑向載荷對軸承旋轉精度的作用規(guī)律。結果表明,滾道的圓度誤差和徑向游隙對軸承旋轉精度的影響較大,旋轉精度隨圓度誤差值和徑向游隙的增大而降低;低階諧波對軸承旋轉精度的影響比較明顯,高階諧波影響程度減小;滾子個數(shù)對軸承旋轉精度也有一定的影響,滾子個數(shù)的增多,旋轉精度提高,而且與內圈滾道有效接觸的滾子數(shù)增多;在其他因素保持不變情況下,徑向載荷增大,旋轉精度降低。 通過數(shù)值仿真和理論驗證相結合的方法,對影響圓柱滾子軸承旋轉精度的因素進行分析,確立內圈滾道幾何參數(shù)、結構參數(shù)及徑向載荷與軸承旋轉精度之間的關系。本研究結果,對建立圓柱滾子軸承旋轉精度的預測理論和評價體系,設計開發(fā)高精度的滾動軸承產(chǎn)品有積極作用。
[Abstract]:With the development of mechanical industry, more and more requirements are put forward for the rotary accuracy of rolling bearings in many application fields. The rotary accuracy of rolling bearing not only reflects the working performance of bearing in operation, but also reflects the manufacturing accuracy. Therefore, the influence factors and variation rules of rolling bearing rotation accuracy are analyzed, and on this basis, the bearing rotation accuracy is predicted, and the research results are of guiding significance to the design and manufacture of bearings. In this paper, the cylindrical roller bearing is taken as the research object. Firstly, the effects of the geometric accuracy and working conditions, such as roundness and corrugation, on the rotation accuracy of the bearing are analyzed, and the inner ring raceway geometric parameters are selected from many factors that affect the rotation accuracy. Structural parameters and radial load are analyzed emphatically. According to the geometric relation of motion of bearing parts, the mathematical models of cylindrical roller bearing under free state and load condition are established, the principle and steps of the algorithm are expounded in detail, and the corresponding program is compiled by using Visual C software. The motion state of cylindrical roller bearing is simulated and simulated, and the program is verified by special point method. Then, the effects of internal raceway roundness error, harmonic order, number of rollers, radial clearance and radial load on bearing rotation accuracy are analyzed. The results show that the raceway roundness error and radial clearance have great influence on the bearing rotation accuracy, and the rotation accuracy decreases with the increase of roundness error and radial clearance. The influence of low order harmonics on bearing rotation accuracy is obvious, and the influence degree of higher order harmonics is reduced. The number of rollers has a certain effect on the bearing rotation accuracy, the number of rollers increases with the increase of roller number, and the number of rollers in effective contact with the inner ring raceway increases. Under the condition that other factors remain unchanged, the radial load increases and the rotation precision decreases. Through the combination of numerical simulation and theoretical verification, the factors affecting the rotation accuracy of cylindrical roller bearing are analyzed, and the relationship between the inner ring raceway geometry parameters, structural parameters and radial load and bearing rotation accuracy is established. The results of this study have a positive effect on the establishment of prediction theory and evaluation system for the rotary accuracy of cylindrical roller bearings and the design and development of high precision rolling bearing products.
【學位授予單位】：河南科技大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH133.33

【引證文獻】

相關碩士學位論文 前1條

1 王寶坤;圓柱滾子軸承元件幾何誤差對軸承性能的影響[D];大連理工大學;2013年

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本文編號：2299378