摘要航空航天是当代最重要的高科技领域之一，也是一个国家总体科技水平和综合国力的标志。差速减速装置是航天飞行器中重要的组成部分，可将多个发动机产生的扭矩合成，并降低速度，将其调整至高效率工作区间中。60823

但三输入差速减速装置在国内少有先例，主要由于其设计参数与传统周转轮系标准值必有差异，因此大部分情况下都会把装置的速度合成部分与速度调整部分分离，这样就增大了装置的体积。我的设计目的是把速度合成部分与速度调整部分合二为一，从而减小体积。现在由于新材料的出现，其带有的先进属性使很多过去无法采用的机构变得可以使用，这可以用于了我设计的结构中。

毕业论文关键词 航空航天 差速减速 扭矩 速度 高效率 减小体积

Title   Spacecraft three differential speed reducer input

Abstract

Aviation and Astronautics is a contemporary of the most important high-tech one of the areas, but also the a country's overall scientific and technological level and comprehensive national strength of the logo. Differential speed deceleration means is a Aerospace and air vehicles important component section, you can be more engine torque produced synthesis, and reduce the speed to provide his adjust the to High The efficient work of the interval.

But three input differential gear device rare precedent in the country, mainly due to its design parameters and conventional epicyclic standard value must differ, so in most cases will be the speed of the device to adjust the speed synthesis section partially separated, thus increasing large volume of the device. My goal is to speed the design and synthesis of some speed adjustment part one, thereby reducing the volume. Now due to the emergence of new materials, their properties with advanced past can not be used to make a lot of institutions becomes available, which can be used to structure my design.

Keywords  Aerospace differential-deceleration torque speed high-efficiency Reduce the volume

目次

1 绪论 1

1.1 研究的背景 1

1.2 国内的发展现状 1

1.3 研究的主要内容 2

2 差速器的总体设计 3

2.1 差速器的传动原理设计方案 3

2.2 各轮齿数的确定 8

2.3 选定齿轮类型、精度等级、材料 9

2.4 总体结构 10

2.5 质量校核 11

3 齿轮的计算、校核 11

3.1 齿轮的设计 12

3.2 计算各轮扭矩、切向力： 17

3.3 各轴的最大转速计算： 18

3.4 齿轮的校核： 18

4 各轴的强度计算及校核 36

4.1  输入轴1的强度计算及校核 36

4.2 输入轴2的强度计算及校核 38

4.3 输入轴3的强度计算及校核 39

4.4 输出轴的强度计算及校核 41

5 轴承的挑选及校核 43

5.1 输入轴1的固定轴承 43

5.2 输入轴2的固定轴承1 44

5.3 输入轴2的固定轴承2