本文關(guān)鍵詞： 齒輪噪聲實驗臺 摩擦激勵 微凸體油膜彈性支撐效應(yīng) 頻譜分析　出處：《廣西工學院》2012年碩士論文　論文類型：學位論文

【摘要】：隨著機械設(shè)計和制造技術(shù)的發(fā)展，齒輪制造和使用迎來了發(fā)展契機。有數(shù)據(jù)顯示，“十一五”期間，中國齒輪行業(yè)得到了飛速發(fā)展，總產(chǎn)值增加了一倍，，達到500億元，在世界排名中居第四位。在近10年的發(fā)展中，我國齒輪產(chǎn)品取得了不菲的成績很多產(chǎn)品已達到國際先進水平，但在齒輪與變速箱中有相當一部分產(chǎn)品與國際先進水平相比，在振動噪聲與疲勞壽命方面存在著很大差距，而這又與齒輪材料、熱處理、工藝等方面有著密切關(guān)系。我國的齒輪產(chǎn)品要達到國際水平，離不開對這些難題的解決。因此對齒輪嚙合噪聲的控制研究具有重要指導(dǎo)作用和經(jīng)濟價值。 近幾十年來在工程上比較常見的降低齒輪噪聲的措施，主要是提高齒輪的制造精度以及改變齒輪的設(shè)計參數(shù)，比如修改齒輪的模數(shù)與齒數(shù)、提高齒面粗糙度、降低齒形誤差等，但是采用現(xiàn)行措施很難獲得明顯的降噪效果。這些措施雖然對齒輪的降噪帶來了一定的效果，但它直接影響了制造成本，加重了齒輪的設(shè)計與加工的負擔，降低了齒輪的競爭力。本文基于高中庸教授提出的“低噪聲齒輪經(jīng)濟性精度”制造工藝，以及“摩擦伴生阻尼”和“微凸體油膜彈性支承效應(yīng)”的理論進行潤滑劑的配制，擺脫了傳統(tǒng)的“負阻尼”理論束縛，并開拓了齒輪潤滑降噪的新思路。 本文設(shè)計了測試齒輪噪聲的實驗臺，并對實驗臺的主要零部件進行了理論分析和計算。通過模擬齒輪降噪實驗以及降噪潤滑劑配制實驗，結(jié)合頻譜分析和模態(tài)分析，評價了自行配制的齒輪降噪潤滑劑在控制齒輪噪聲方面的能力，得出以下結(jié)論： 1．實驗中得出的降噪潤滑劑表現(xiàn)出較好地控制摩擦激勵的能力進而有效地控制齒輪噪聲。 2．在齒輪開始嚙合和嚙合結(jié)束時存在相對滑動速度的影響，證明了齒輪嚙合過程中存在摩擦激勵頻率為嚙合頻率的2倍的關(guān)系。 3．自行配置的降噪潤滑劑能產(chǎn)生“微凸體油膜彈性支撐效應(yīng)”，有助于輪齒抗磨能力的提高，從而降低了齒輪磨損，為實現(xiàn)齒輪加工的“低噪聲齒輪經(jīng)濟性精度”制造工藝，提供了有力保障。
[Abstract]:With the development of mechanical design and manufacturing technology, gear manufacturing and use has ushered in a development opportunity. According to some data, during the 11th Five-Year Plan period, the gear industry in China got rapid development, and the total output value doubled to 50 billion yuan. It ranks 4th in the world ranking. In the recent 10 years of development, China's gear products have made a good deal of achievements, many products have reached the international advanced level, but in gear and gearbox there are quite a number of products compared with the international advanced level. There is a big gap between vibration and noise and fatigue life, which is closely related to gear material, heat treatment, technology and so on. Therefore, the study of gear meshing noise control has important guiding role and economic value. In recent decades, the common measures to reduce gear noise in engineering are to improve the manufacturing accuracy of gear and change the design parameters of gear, such as modifying the module and tooth number of gear, improving the roughness of tooth surface. It is difficult to obtain obvious noise reduction effect by using current measures. Although these measures have brought some effect to gear noise reduction, they directly affect the manufacturing cost and increase the burden of gear design and processing. Based on the manufacturing technology of "economic precision of low noise gear" proposed by Professor Gao Zhongyong, and the theory of "friction associated damping" and "elastic supporting effect of oil film on micro-convex body", the lubricant was prepared in this paper. Get rid of the traditional "negative damping" theory, and open up a new way of gear lubrication noise reduction. In this paper, the experimental platform for measuring gear noise is designed, and the main components of the test table are analyzed and calculated theoretically. Through the simulation experiment of gear noise reduction and the experiment of making up the lubricant for noise reduction, the frequency spectrum analysis and modal analysis are combined. The ability of self-made gear noise reducing lubricant to control gear noise is evaluated, and the following conclusions are obtained:. 1. The noise-reducing lubricant obtained in the experiment shows the ability of controlling friction excitation and effectively controlling gear noise. 2. It is proved that the friction excitation frequency is two times of the meshing frequency in the gear meshing process, which is influenced by the relative sliding velocity at the beginning and the end of the gear meshing. 3. The self-configured lubricant can produce "oil film elastic support effect", which is helpful to improve the wear resistance of gear teeth and reduce gear wear. In order to realize the manufacturing process of "low noise gear economic precision" in gear machining, the self-configured lubricant can produce "oil film elastic support effect", which is helpful to improve the wear resistance of gear teeth. It provides a strong guarantee.
【學位授予單位】：廣西工學院
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH132.41

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