李应成 二级展开式圆锥-斜齿圆柱齿轮减速器毕业设计

摘 要

盘式搅拌机在现代工程中应用广泛，盘式搅拌机的设计关键在于齿轮传动的设计，齿轮传动是现代机械中应用最广的一种传动形式。它由齿轮、轴、轴承及箱体组成的齿轮减速器,用于原动机和工作机或执行机构之间,起匹配转速和传递转矩的作用。齿轮减速器的特点是效率高、寿命长、维护简便，因而应用极为广泛。

本设计讲述了盘式搅拌机的传动装置二级圆锥-斜齿圆柱齿轮减速器的设计过程。选择齿轮减速器作为传动装置，然后进行减速器的设计计算（包括选择电动机、设计齿轮传动、轴的结构设计、选择并验算滚动轴承、校核平键联接、校核轴承寿命、校核轴的强度，选择齿轮传动和轴承的润滑方式九部分内容）。cad绘工程图纸，完成齿轮减速器的二维平面零件图和装配图的绘制。

关键字：减速器；齿轮；轴；轴承；键

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Abstract

The disc mixer is widely used in modern engineering. The design of the disc mixer is the design of the gear drive, and the gear drive is the most widely used in modern machinery.. It consists of gears, shafts, bearings and box gear reducer, for the original motivation and working machine or actuator, the match between the speed and torque transfer function. The gear reducer is characterized by high efficiency, long life and easy maintenance, so

it

is widely used..

This design describes the design process of the disc mixer transmission device two stage conical - helical gear reducer. Select the gear speed reducer is used as a transmission device,and deceleration device design calculation (including the choiceof motor, design of gear and shaft structure design, selectionand calculation of rolling bearing, check coupling flat key, check the bearing life, check the shaft strength and select the gear transmission and bearing lubrication parts of nine.CAD drawing engineering drawings, the completion of the two-dimensional plane parts of the gear reducer drawing and assembly drawings.

Keywords: reducer; gear; shaft; bearing; key

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目 录

第一章 前言 .........................................................................................................................................- 1 - 第二章 传动系统总体方案设计 ..........................................................................................................- 4 -

2.1电动机的选择.........................................................................................................................- 4 - 2.2 传动比的分配........................................................................................................................- 4 - 第三章 减速器齿轮的设计与校核 ......................................................................................................- 4 -

3.1 减速器第一级齿轮的设计 ...................................................................... 错误！未定义书签。 3.2 减速器第二级齿轮的设计 ...................................................................... 错误！未定义书签。 3.3齿轮上作用力的计算 ............................................................................... 错误！未定义书签。

3.3.1高速级齿轮传动的作用力 ........................................................... 错误！未定义书签。 3.3.2低速级齿轮传动的作用力 ........................................................... 错误！未定义书签。

第四章减速器轴的设计与校核 ............................................................................................................- 6 -

4.1高速轴的设计与计算 .............................................................................................................- 6 -

4.1.1已知条件.....................................................................................................................- 6 - 4.1.2选择轴的材料 .............................................................................................................- 6 - 4.1.3初算轴径.....................................................................................................................- 6 - 4.1.4结构的设计 .................................................................................................................- 7 - 4.1.5键连接.......................................................................................................................- 10 - 4.1.6轴的受力分析 ...........................................................................................................- 10 - 4.1.7校核轴的强度 ...........................................................................................................- 12 - 4.1.8校核键连接强度 .......................................................................................................- 13 - 4.1.9校核轴承寿命 ...........................................................................................................- 13 - 4.2低速轴的设计与计算 ...........................................................................................................- 14 -

4.2.1已知条件...................................................................................................................- 14 - 4.2.2选择轴的材料 ...........................................................................................................- 15 - 4.2.3初算轴径...................................................................................................................- 15 - 4.2.4结构的设计 ...............................................................................................................- 15 - 4.2.6轴的受力分析 ...........................................................................................................- 18 - 4.2.7校核轴的强度 ...........................................................................................................- 20 - 4.2.8校核键连接强度 .......................................................................................................- 21 - 4.2.9校核轴承寿命 ...........................................................................................................- 21 - 4.3中间轴的设计与计算 ...........................................................................................................- 22 -

4.3.1已知条件...................................................................................................................- 22 - 4.3.2选择轴的材料 ...........................................................................................................- 22 - 4.3.3初算轴径...................................................................................................................- 22 - 4.3.4结构设计...................................................................................................................- 23 - 4.3.5键连接.......................................................................................................................- 25 - 4.3.6轴的受力分析 ...........................................................................................................- 25 - 4.3.7校核轴的强度 ...........................................................................................................- 26 - 4.3.8校核键连接强度 .......................................................................................................- 27 -

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4.3.9校核轴承寿命 ...........................................................................................................- 27 -

第五章 齿轮、轴承的润滑以及润滑油的选择 ................................................................................- 28 -

5.1齿轮的润滑 ..........................................................................................................................- 28 - 5.2轴承的润滑 ..........................................................................................................................- 28 - 5.3润滑油的选择.......................................................................................................................- 29 - 总结 .....................................................................................................................................................- 29 - 参考文献 .............................................................................................................................................- 32 -

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