基于模拟实验的齿轮啮合摩擦激励噪声与润滑控制技术的研究

发布时间：2018-02-24 23:10

本文关键词： 齿轮噪声实验台摩擦激励微凸体油膜弹性支撑效应频谱分析　出处：《广西工学院》2012年硕士论文　论文类型：学位论文

【摘要】：随着机械设计和制造技术的发展，齿轮制造和使用迎来了发展契机。有数据显示，“十一五”期间，中国齿轮行业得到了飞速发展，总产值增加了一倍，，达到500亿元，在世界排名中居第四位。在近10年的发展中，我国齿轮产品取得了不菲的成绩很多产品已达到国际先进水平，但在齿轮与变速箱中有相当一部分产品与国际先进水平相比，在振动噪声与疲劳寿命方面存在着很大差距，而这又与齿轮材料、热处理、工艺等方面有着密切关系。我国的齿轮产品要达到国际水平，离不开对这些难题的解决。因此对齿轮啮合噪声的控制研究具有重要指导作用和经济价值。近几十年来在工程上比较常见的降低齿轮噪声的措施，主要是提高齿轮的制造精度以及改变齿轮的设计参数，比如修改齿轮的模数与齿数、提高齿面粗糙度、降低齿形误差等，但是采用现行措施很难获得明显的降噪效果。这些措施虽然对齿轮的降噪带来了一定的效果，但它直接影响了制造成本，加重了齿轮的设计与加工的负担，降低了齿轮的竞争力。本文基于高中庸教授提出的“低噪声齿轮经济性精度”制造工艺，以及“摩擦伴生阻尼”和“微凸体油膜弹性支承效应”的理论进行润滑剂的配制，摆脱了传统的“负阻尼”理论束缚，并开拓了齿轮润滑降噪的新思路。本文设计了测试齿轮噪声的实验台，并对实验台的主要零部件进行了理论分析和计算。通过模拟齿轮降噪实验以及降噪润滑剂配制实验，结合频谱分析和模态分析，评价了自行配制的齿轮降噪润滑剂在控制齿轮噪声方面的能力，得出以下结论： 1．实验中得出的降噪润滑剂表现出较好地控制摩擦激励的能力进而有效地控制齿轮噪声。 2．在齿轮开始啮合和啮合结束时存在相对滑动速度的影响，证明了齿轮啮合过程中存在摩擦激励频率为啮合频率的2倍的关系。 3．自行配置的降噪润滑剂能产生“微凸体油膜弹性支撑效应”，有助于轮齿抗磨能力的提高，从而降低了齿轮磨损，为实现齿轮加工的“低噪声齿轮经济性精度”制造工艺，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.
【学位授予单位】：广西工学院
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.41

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