蜗轮整体结构设计对齿面润滑影响的仿真研究

发布时间：2018-05-21 09:44

本文选题：蜗杆传动 + 实体建模　；参考：《东北大学》2012年硕士论文

【摘要】：蜗杆传动是重要的齿轮传动类型之一,具有传动比大、结构紧凑等优点,广泛应用在矿山、冶金、起重运输和国防等行业。传统的蜗轮蜗杆的损坏主要都是因为润滑状态过于恶劣而使蜗轮磨损。本文以传统的ZA蜗杆传动副为研究对象,通过对其腹板位置的整体结构设计而使轮齿产生形变,进而形成流体动压润滑,以此来改善蜗轮磨损严重的情况。本文主要完成了如下工作： 1.对ZA蜗杆、蜗轮的齿面方程的数学模型进行了比较系统的整理,并在原数学模型的基础上根据建模需要对蜗轮轮齿的数学表达式进行了推导,以此作为建立ZA蜗杆传动模型的理论基础。 2.本文通过对ZA蜗轮蜗杆齿面方程的研究,在Pro/E中建立了ZA蜗轮蜗杆的实体模型。针对原蜗杆传动不易形成油膜的问题,对蜗轮的腹板位置进行适当偏移,并建立三维模型,为静力分析及流体分析做准备。 3.对在Workbench环境下的前处理过程进行了较为详细的叙述,分析了ZA蜗杆传动在同一啮合位置施加负载情况下的接触应力与变形情况。然后对整体设计之后的蜗轮也进行了相同负载条件下的静力分析,并对两者结果进行比较,分析蜗轮结构设计后是否有利于流体动压润滑油膜的形成。 4.根据流体动压理论结合实际的蜗杆传动,考虑到传动过程中流体受力与蜗轮的形变量有关,对油膜模型进行了适当的简化处理,采用FLUENT的计算机模拟仿真,为蜗轮蜗杆的流体动压润滑模拟提供了一种较为有效的仿真方法。
[Abstract]:Worm gear transmission is one of the important gear transmission types, with the advantages of high transmission ratio and compact structure. It is widely used in mining, metallurgy, lifting transportation and national defense industries. The damage of the traditional worm gear is mainly caused by the wear and tear of the worm gear due to the poor lubrication condition. In this paper, the traditional Za worm transmission pair is taken as the research object. The gear teeth are deformed by the overall structural design of its web position, and then hydrodynamic lubrication is formed to improve the serious wear of worm gear. The main work of this paper is as follows: 1. The mathematical model of the tooth surface equation of Za worm and worm gear is systematically arranged, and the mathematical expression of the worm gear tooth is deduced according to the need of modeling on the basis of the original mathematical model. It is used as the theoretical basis of establishing Za worm transmission model. 2. In this paper, through the study of the equation of the tooth surface of Za worm gear, the solid model of Za worm gear is established in Pro/E. Aiming at the problem that oil film is not easy to be formed in the original worm drive, the web plate position of the worm gear is shifted appropriately, and a three-dimensional model is established to prepare for static analysis and fluid analysis. 3. The preprocessing process in Workbench environment is described in detail, and the contact stress and deformation of Za worm drive under the same meshing position are analyzed. Then the static analysis of the wormgear after the whole design is carried out under the same load condition, and the results are compared to analyze whether the structure design of the worm gear is favorable to the formation of the hydrodynamic lubricating oil film after the structural design of the worm wheel. 4. According to the hydrodynamic pressure theory combined with the actual worm drive, considering that the fluid force in the transmission process is related to the shape variable of the worm gear, the oil film model is properly simplified and the computer simulation of FLUENT is adopted. A more effective simulation method is provided for the hydrodynamic lubrication simulation of worm gear and worm.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.44

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