文档介绍：摘要
随着汽车工业的发展,轿车变速器的设计趋势为增大变速器传递功率与重量之比,并要求变速器具有较小的尺寸和良好的性能。在给定发动机输出转矩、转速及最高车速、最大爬坡度等条件下,着重对变速器齿轮的结构参数、轴的结构尺寸等进行设计计算。该型结构紧凑工艺性能好,适配性强,传动平稳噪声低,节油且成本低。
关键词:变速器;齿轮;同步器;设计
Abstract
Along with the development of the automobile industry,the trend of car transmission designing is to increase its transmission power and decrese its weight ,and hope have smaller size and excellent performance. In conditions that knowing the engine output torque , speed of engine and maximum speed of vehicles, maximum degree, focuson the designing of transmission gear structural parameters, axis geometry putation; as well as the transmission and drive program structure design ,Structure by the process performance together, and fit and strong, smooth transmission and low noise, fuel-efficient and low cost。
Key words: transmission ; gear ; synchrotron ; design
目录
摘要
Abstract
1 绪论………………………………………………………………………………………......1
变速器的国内外发展状况及种类………………………………………………………….1
机械式变速器的特点……………………………………………………………………….2
2 两轴五挡机械式变速器设计.………………………………………………….......................3
变速器设计的基本要求…………………………………………………………….............3
变速器的功用与要求…………………………………………………………..................3
变速器的传动布置方案的确定…………………………………………………………….3
倒挡传动方案……………………………………………………………………………..5
变速器主要零件结构的方案分析………………………………………………………….5
齿轮形式………………………………………………………………………………….5
轴的结构………………………………………………………………………………….5
轴承形式………………………………………………………………………………….6
换挡结构形式…………………………………………………………………………….6
3 变速器主要参数的选择与主要零件的设计…………………………...................................8
变速器主要参数的选择……………………………………………....................................8
挡数和传动比……………………………………………………………………………..8
中心距……………………………………………………………………………………..9
轴向尺寸…………………………………………………………………………………..9
齿轮参数…………………………………………………………………………………..9
各档传动比及其齿轮齿数的确定………………………………………………………...10
确定一挡齿轮的齿数……………………………………………………………………10
确定其他挡位的齿数…………………………………………………………………….11
齿轮变位系数的选择……………………………………………………………………....11
4 变速器齿轮