【摘要】：本文通過分析軸承摩擦力矩的三個經驗計算公式,決定采用帕姆格林的經驗公式作為本課題研究的基礎,研究了潤滑劑對軸承摩擦力矩的影響。采用ADAMS對滾動軸承無潤滑的情況進行仿真,驗證了選用ADAMS作為軸承運動學研究工具的可行性。通過ADAMS仿真和SKF的經驗計算分析了滾動軸承的摩擦力矩,得到軸承的摩擦力矩隨軸承載荷的增加而增加,但隨轉速的增加會先增加后減小,其主要原因是由于軸承潤滑劑的特殊效果造成的。針對雙層滾動軸承運動學進行的理論分析主要從純滾動理論和摩擦力矩平衡展開,兩種理論計算值是不一樣的,前者偏大,后者偏小。針對與載荷有關的摩擦力矩,采用ADAMS仿真雙層軸承在各種條件(不同的載荷、內圈轉速、中間質量和組合方式)下的運動特性,研究表明,在無潤滑劑狀態(tài)下,中圈的轉速隨載荷增加有所增加;隨內圈轉速提高先增大后減小。通過實驗研究了潤滑劑對雙層軸承轉速分配的影響,測量了雙層軸承在不同潤滑條件下的中圈轉速。研究表明,無載荷情況下,當采用油潤滑時,中圈轉速比較穩(wěn)定,基本接近理論值;當采用脂潤滑時,油脂填充量對轉速分配比有重要影響。
[Abstract]:Based on the analysis of three empirical formulas of friction moment of bearing, Pam Green's empirical formula is chosen as the basis of this study, and the influence of lubricant on friction moment of bearing is studied. ADAMS is used to simulate the rolling bearing without lubrication, and the feasibility of using ADAMS as the bearing kinematics research tool is verified. The friction torque of rolling bearing is analyzed by ADAMS simulation and SKF's experience calculation. It is found that the friction torque of rolling bearing increases with the increase of bearing load, but increases first and then decreases with the increase of rotational speed. The main reason is the special effect of bearing lubricant. The theoretical analysis of the kinematics of the double-layer rolling bearing is mainly carried out from the pure rolling theory and the friction moment balance. The calculated values of the two kinds of theories are different. The former is larger than the latter is small. In view of the friction torque related to load, ADAMS is used to simulate the motion characteristics of double-layer bearing under various conditions (different load, inner ring speed, intermediate mass and combination mode). The rotational speed of the middle ring increases with the increase of load, and increases first and then decreases with the increase of the inner ring speed. The effect of lubricant on speed distribution of double layer bearing was studied experimentally and the speed of middle ring of double layer bearing under different lubrication conditions was measured. The results show that the rotation speed of the middle ring is stable and close to the theoretical value when oil lubrication is used without load, and the oil filling amount has an important effect on the speed distribution ratio when the grease lubrication is used.
【學位授予單位】：南京航空航天大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH133.33

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本文編號：2216972