电动助力增益蜗杆副参数化设计和仿真分析的研究

发布时间：2018-03-05 02:13

本文选题：电动助力　切入点：双锥面二次包络环面蜗杆　出处：《上海师范大学》2013年硕士论文　论文类型：学位论文

【摘要】：采用环面蜗杆副的电动助力增益机构由于启动频繁、冲击较大、润滑及冷却条件有限等原因，使得在实际使用中经常因蜗轮蜗杆副失效，引起转向系统失灵、失效等安全隐患。本文以某型号电动助力增益器上的双锥面二次包络环面蜗杆副作为研究对象，建立参数化数学和实体模型，进行装配和仿真，，并研究蜗杆副的接触应力特性，主要研究内容如下：（1）根据空间几何原理和齿轮啮合原理，推导、建立蜗杆副的数学模型。根据传动类型特点进行整理和分析，以之作为研究双锥面二次包络环面蜗杆传动模型的理论基础。（2）研究了啮合质量评价方法。通过蜗杆副的基本几何和工艺参数计算，总结各变量之间相互影响关系；给出了基于最小油膜厚度和接触线分布以有效评价环面蜗杆副啮合质量的约束方程。（3）研究了双锥面二次包络环面蜗杆的实体参数化建模和运动仿真。根据蜗杆副实体特点，提出了一种基于虚拟建模的双锥面环面蜗杆副的建模方法，并基于SolidWorks-API成功实现了高精度参数化高精度建模。（4）研究了双锥面二次包络环面蜗杆副的接触应力分布特点。借助有限元分析工具，分析了蜗杆副接触应力的分布随产形倾角及产形半径变化特点。将计算结果与理论分析相印证，为蜗杆副的加工制造、修形等提供了有效的方法和有力的支持。
[Abstract]:Because of frequent start-up, large impact, limited lubrication and cooling conditions, the electric booster gain mechanism with toroidal worm gear pair is often caused by the failure of worm gear pair in practical use, which leads to the failure of steering system, failure of safety hazard and so on. In this paper, the double conical double enveloping torus worm pair on a certain type of electric power booster is taken as the research object, the parameterized mathematical and solid models are established, the assembly and simulation are carried out, and the contact stress characteristics of the worm pair are studied. The main contents of the study are as follows:. 1) according to the principle of space geometry and gear meshing, the mathematical model of worm pair is established, which is arranged and analyzed according to the characteristics of transmission type, which is used as the theoretical basis for studying the transmission model of double conical double enveloping worm gear. (2) the evaluation method of meshing quality is studied. Through the calculation of the basic geometry and technological parameters of worm gear, the relationship between the variables is summarized. Based on the minimum oil film thickness and contact line distribution, a constraint equation for evaluating meshing quality of toroidal worm pair is presented. In this paper, the parametric modeling and motion simulation of double conical double enveloping torus worm are studied. According to the characteristics of worm pair, a modeling method based on virtual modeling for double conical toroidal worm pair is proposed. The high precision parameterized high precision modeling is successfully realized based on SolidWorks-API. In this paper, the contact stress distribution characteristics of double conical double enveloping torus worm pair are studied, and the finite element analysis tool is used to analyze the contact stress distribution. The characteristics of the distribution of contact stress of worm pair with the inclination angle and radius of production are analyzed. The calculated results are verified by theoretical analysis, which provides an effective method and powerful support for the manufacture and modification of worm pair.
【学位授予单位】：上海师范大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TH132.44

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