LTCA论文：LTCA 齿轮修形 齿廓修形 齿向修形 减速器
【中文摘要】在工程机械和风力发电等领域,齿轮传动正朝着低速重载、高速重载的方向发展,对齿轮传动的可靠性和寿命等提出了更高的要求。齿轮修形技术是研发重载、长寿命、高可靠性齿轮传动的重要手段。本文以混凝土运输车搅拌筒减速器为研究对象,通过分析减速器在额定载荷下的系统变形、齿轮啮合传递误差、齿向载荷分布,根据齿轮修形原理提出了一套齿廓和齿向修形的方法,并用试验验证了齿轮修形参数的正确性。主要研究内容如下:(1)介绍了齿轮接触分析理论,包括Hertz弹性接触理论和齿面受载接触分析理论,为减速器齿轮的接触分析提供理论基础。(2)运用MASTA和ANSYS软件建立了减速器传动系统的分析模型,分析了不同行星架和箱体刚度对齿轮啮合错位量的影响,分析结果表明行星架和箱体刚度对齿轮啮合错位量的大小和方向有较大的影响。(3)介绍了齿廓修形原理和齿廓修形参数的确定方法。通过分析不同修形量以及不同载荷情况下齿轮啮合传递误差的变化规律,确定了最佳的齿廓修形参数。接触分析结果表明,齿廓修形可以减小齿轮传递误差,提高齿轮传动的平稳性。(4)介绍了齿向修形原理和齿向修形参数的确定方法。对减速器进行了系统变形分析,获得了齿轮轴的变形为齿向修形参数确定提供了初始条件;通过分析不同修形量下的齿向载荷分布情况,确定了最佳的齿向修形参数。接触分析结果表明,齿向修形可以改善齿面的载荷分布,提高齿轮的接触和弯曲疲劳强度。(5)介绍了减速器的齿面加载疲劳
试验,检查了试验后的齿面接触印痕,结果验证了本文确定的齿轮修形参数是合理的;介绍了减速器静力试验的基本原理和试验载荷,比较了二级太阳轮剪切应力的试验值和软件计算值,结果表明软件的计算结果是准确的。
【英文摘要】In the field of engineering machine、wind power…etc. Gear transmission is developing toward the direction of low speed and heavy load、high speed and heavy load. this puts forward higher requirements in the aspect of high reliability、long life. the gear modification technology is an important means of developing the heavy load、long life and high reliability gear transmission. This thesis did some research on the gearbox for concrete transport vehicle, carried out the system deformation analysis for the gearbox at the rating load, analyses the transmission error of gear mesh and lead load distribution, and according to the principle of gear modification, proposed a kind of method for profile
modification and lead modification, finally verified that the gear modification parameter was reasonable by the test. The major work is summarized as follows:(1) Introduced the theory of gear contact analysis, including the Hertz elastic contact theory and the loaded tooth contact analysis theory, and provided the theory foundation for gear contact analysis of
gearbox.(2) Built up the analysis mode of gear transmission system by the MASTA and ANSYS software, and analyses the influence of different stiffness of carrier and housing on gear mesh misalignment .the result indicated the stiffness of carrier and housing has important impact on the magnitude and direction of gear mesh misalignment.(3) Introduced the principle of profile modification and the method of determining profile modification parameter. At the different amount of gear modification and load case, analyses the gear mesh transmission error, and determined the optimum parameters of profile modification. Contact analysis results showed that the profile modification can reduce the gear modification and improve the stability of gear transmission.(4) Introduced the principle of lead modification and the method of determining lead modification parameter. Conducted the system deformation analysis of gearbox, and obtained the deformation of gear shaft, provided the initial condition for determining the lead modification parameter. Compared to the tooth load distribution of different amount of lead modification, determined the optimum parameter of lead modification. Contact analysis results indicated that the lead modification can improve the tooth face load distribution and increase the gear