渐开线少齿差行星齿轮减速器设计零齿差输出机构毕业论文

渐开线少齿差行星齿轮减速器的设计

（零齿差输出机构）

摘要

在条件为输入转速为1450转/分钟、输入功率为5KW、传动比为25等这些技术参数的基础上设计一渐开线少齿差行星齿轮减速器。

渐开线行星齿轮减速器传动与普通定轴减速器传动相比具有承载能力大、体积小、效率高、重量轻、传动比大、噪声小、可靠性高、寿命长、便于维修等优点，同时还可以提高其承载能力。

本设计最主要的过程就是少齿差和零齿差设计参数的选取与计算，特别是变位系数的选取，需通过Matlab 软件编程计算，这样很大程度上节省了因选取的变位系数不当而需重新计算所需要的时间。还可以多次给定初值选取最佳的变位系数，从而有利于少齿差和零齿差的结构设计。同时还需对轴类零件、端盖、箱体的结构设计，装配时，需要对轴承、密封圈、挡圈、键进行选用。

关键词：减速器行星齿轮优化设计

Involute few tooth difference planet gear reduction gear

design

(zero tooth difference output element)

Abstract

The planet gear reduction gear with few-tooth difference transmission and the ordinary dead axle reduction gear transmission compares has the bearing capacity in a big way, the volume small, the efficiency high, the weight light, the velocity ratio big, the noise small, the reliability high, the life long, is advantageous for merits and so on service, meanwhile may sharpen its bearing capacity.

This design process most main is the few tooth difference and the zero tooth difference design variable selection and the calculation, specially dislodges the coefficient the selection, must through the Matlab software programming computation, save like this to a great extent because of the dislodgement coefficient which selected not when had the recomputation to need time. It also may many times assign the starting value selection best dislodgement coefficient, thus is advantageous to the few tooth difference and the zero tooth difference structural design.When simultaneously also needs the countershaft class components, the end cover, the body structural design, the assembly, needs to the bearing, the seal packing collar, the elastic ring, the key to carry on selects.

Key word: The reduction gearplanet gear optimizes the design

目录

第一章概述5

1.1 发展概况5

1.2 发展方向5

1.3 传动特点6

1.4 设计目的6

第二章齿差传动6

2.1 少齿差传动原理6

2.2 少齿差传动的结构类型8

2.2.1按输出机构型式分8

2.2.2按减速器的级数分8

2.2.3按安装型式分8

2.3 2K-H型传动装置9

2.4 传动比计算9

2.5 少齿差传动的特点和应用9

2.6 少齿差传动的设计顺序10

2.7 少齿差传动的各个限制条件11

2.7.1 齿廓不重迭干涉11

2.7.2 啮合角11

2.7.3 重合度11

2.7.4 变位系数12

2.8 少齿差齿轮副的几何计算12

第三章零齿差传动16

3.1 零齿差传动原理16

3.2 零齿差传动的主要参数16

3.2.1 变位系数与中心距17

3.2.2 啮合齿面的诱导法曲率18

3.2.3 重迭系数18

3.2.4 齿面滑动系数19

3.2.5 啮合效率20

3.3 主要几何限制条件21

3.3.2 齿顶具有一定的厚度21

3.3.3 验算径向间隙21

3.3.4 差齿刀齿数要适当21

3.4 零齿差齿轮副的设计步骤22

3.5零齿差齿轮副的几何计算22

第四章其他元件的选择26

4.1 键的选择26

4.2 齿轮的材料与其选择原则27

4.2.1 选用的齿轮材料：钢27

4.2.2 选择原则27

4.3 滚动轴承的选择28

4.4 轴的设计30

4.5 密封件34

参考文献35

致36