基于齿轮啮合动力学的工业减速器齿轮齿廓修形理论研究
发布时间：2018-11-12 14:00
【摘要】：随着现代工业技术的飞速发展，齿轮传动正朝着高效、高速和重载的方向发展。齿轮传动系统传递的功率不断增大，齿轮转速不断加快，不仅使得减速器的振动和噪声问题更加尖锐突出，同时也影响了整套机组的安全性和稳定性。齿廓修形技术是高精度齿轮传动设计、制造的关键技术，是解决齿轮传动的振动和噪声问题的一个极其重要的方法。 本文结合齿轮系统动力学的基本理论，对其动态激励原理、数学模型种类以及动态特性内容进行了一定的概述，并重点针对啮合刚度、啮合误差和啮合冲击等三大内部激励的机理进行了深入的探讨；通过ADAMS和ANSYS软件联合动力学仿真的方式，建立了齿轮系统的柔体动力学模型，实现了对齿轮啮合力动态特性的研究；根据齿轮系统齿廓修形的基本原理，采用有限元的方法，建立了齿轮单齿啮合位置的接触有限元模型，确定了齿轮齿廓修形的最大修形量；针对四种常用的修形曲线，计算出不同啮合位置的修形量，并通过描点法对修形曲线进行精确拟合，建立了修形齿轮的实体几何模型，进行动力学仿真分析对比，证实了齿廓修形的合理性，随后以齿轮动态啮合力的振动特性作为性能指标，，选取了针对本文工况的最优修形曲线；最后在此基础上，总结出一种利用现代计算机仿真技术合理地确定齿轮修形量和选择修形曲线的方法，为齿廓修形的研究和实践运用提供了理论依据。
[Abstract]:With the rapid development of modern industrial technology, gear transmission is developing in the direction of high efficiency, high speed and heavy load. The transmission power of the gear transmission system is increasing and the speed of the gear is speeding up, which not only makes the vibration and noise problems of the reducer more acute, but also affects the safety and stability of the whole unit. Profile modification is a key technology in the design and manufacture of high precision gear transmission. It is a very important method to solve the problem of vibration and noise of gear transmission. Combined with the basic theory of gear system dynamics, this paper summarizes the dynamic excitation principle, mathematical models and dynamic characteristics of gear system, and focuses on meshing stiffness. The mechanism of three internal excitations, such as meshing error and meshing shock, is discussed deeply. Through the joint dynamic simulation of ADAMS and ANSYS software, the flexible body dynamics model of gear system is established, and the dynamic characteristics of gear meshing force are studied. According to the basic principle of tooth profile modification in gear system, the contact finite element model of gear tooth meshing position is established by using finite element method, and the maximum modification quantity of gear tooth profile modification is determined. According to four kinds of common modification curves, the modification quantity of different meshing position is calculated, and the modification curve is accurately fitted by drawing point method, and the solid geometric model of modified gear is established, and the dynamic simulation analysis and comparison are carried out. The rationality of tooth profile modification is confirmed, and then the vibration characteristic of gear dynamic meshing force is taken as the performance index, and the optimal profile modification curve is selected according to the working conditions in this paper. Finally, a method of determining gear profile modification and selecting profile modification curve by using modern computer simulation technology is summarized, which provides a theoretical basis for the research and practical application of tooth profile modification.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.46
本文编号：2327314
[Abstract]:With the rapid development of modern industrial technology, gear transmission is developing in the direction of high efficiency, high speed and heavy load. The transmission power of the gear transmission system is increasing and the speed of the gear is speeding up, which not only makes the vibration and noise problems of the reducer more acute, but also affects the safety and stability of the whole unit. Profile modification is a key technology in the design and manufacture of high precision gear transmission. It is a very important method to solve the problem of vibration and noise of gear transmission. Combined with the basic theory of gear system dynamics, this paper summarizes the dynamic excitation principle, mathematical models and dynamic characteristics of gear system, and focuses on meshing stiffness. The mechanism of three internal excitations, such as meshing error and meshing shock, is discussed deeply. Through the joint dynamic simulation of ADAMS and ANSYS software, the flexible body dynamics model of gear system is established, and the dynamic characteristics of gear meshing force are studied. According to the basic principle of tooth profile modification in gear system, the contact finite element model of gear tooth meshing position is established by using finite element method, and the maximum modification quantity of gear tooth profile modification is determined. According to four kinds of common modification curves, the modification quantity of different meshing position is calculated, and the modification curve is accurately fitted by drawing point method, and the solid geometric model of modified gear is established, and the dynamic simulation analysis and comparison are carried out. The rationality of tooth profile modification is confirmed, and then the vibration characteristic of gear dynamic meshing force is taken as the performance index, and the optimal profile modification curve is selected according to the working conditions in this paper. Finally, a method of determining gear profile modification and selecting profile modification curve by using modern computer simulation technology is summarized, which provides a theoretical basis for the research and practical application of tooth profile modification.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.46
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