少齿差行星齿轮减速器的设计本科毕业设计

****本科毕业论文 摘要

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****本科毕业论文 摘要

摘 要

对少齿差行星齿轮减速器国内外的发展现状、优缺点、结构型式和其传动原理进行了一定的阐述。在设计过程当中，对内啮合传动产生的各种干涉进行了详细验算；从如何提高转臂轴承的寿命为出发点，来计算选择减速器齿轮的模数，进行少齿差内齿轮副的设计计算，最终合理设计减速器的整体结构。

关键词：少齿差行星传动；行星齿轮减速器；内齿轮副 Ⅰ

****本科毕业论文 ABSTRACT

Abstract

Having expounded the planetary gear reducer of a few-tooth difference about its development of the status quo at home and abroad, the advantages and disadvantages, structural type and principle of its transmission. Among the process of designing, having checked detailedly about the interference which generated by internal mesh transmission. From how to improve the life of bearing arms to the starting point, choosing and calculating the modulus of the gear reducer for designing the internal gear pair of a few-tooth difference and the final overall structure of the reducer.

Key words：Small tooth number difference planet transmission; Planetary gear

reducer; Annular gear

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****本科毕业论文 目录

目 录

摘要 ................................................................................................................................. Ⅰ ABSTRACT ......................................................................................................................... Ⅱ

1 绪论 ............................................................................................................................ 1

1.1 概述 ..................................................................................................................... 1 1.2 少齿差行星减速器的结构型式 ............................................................................... 2

1.2.1 N型少齿差行星减速器 ................................................................................ 2 1.2.2 NN型少齿差行星减速器 .............................................................................. 3 1.3 国内外研究状况 .................................................................................................... 5 1.4 发展趋势 .............................................................................................................. 6 1.5 本课题的意义与设计任务 ...................................................................................... 7

1.5.1 本课题的设计意义 ...................................................................................... 7 1.5.2 设计任务 .................................................................................................... 7

2 减速器结构型式的确定 ............................................................................................ 8

2.1 减速器结构型式的确定 ......................................................................................... 8

3 减速器的内齿和外齿轮参数的确定 ....................................................................... 10

3.1齿轮齿数确定 ....................................................................................................... 10 3.2主要零件的材质和齿轮精度 .................................................................................. 10 3.3 啮合角、变位系数确定 ........................................................................................ 10

3.3.1 确定啮合角和外齿轮变位系数xc及内齿轮变位系数xb ............................... 10 3.3.2 计算四个导数 ............................................................................................ 11

(1)(1)3.3.3 计算xc,xb及相应的?' .......................................................................... 12

4 几何尺寸计算及主要限制条件检查 ....................................................................... 14

4.1 切削内齿轮插齿刀的选用 ..................................................................................... 14

4.1.1 径向切齿干涉 ............................................................................................ 14 4.1.2 插齿啮合角?0b ......................................................................................... 15 4.2 切削内齿轮的其他限制条件检查 .......................................................................... 15

4.2.1 展成顶切干涉 ............................................................................................ 15 4.2.2 齿顶必须式渐开线 ..................................................................................... 15 4.3 切削外齿轮的限制条件检查 ................................................................................. 16 4.4 内齿轮其他限制条件检查 ..................................................................................... 16

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