青岛理工大学课程设计说明书题目：中型载货汽车六档变速器学院：汽车与交通学院班级：车辆13-1班组员：邹九涛（201324234）王帅(201324254)郭家康（201324212）王汝峰（201324225)周围（201324232）范冯鑫（201324238）指导老师：修玉峰日期：2016年10月7日目录一、前言......................................................................................................................1二、变速器传动机构布置方案...................................................................................12.1汽车的主要参数.............................................................................................12.2变速器类型的选择.........................................................................................12.2.1固定轴式变速器..................................................................................12.2.2倒挡布置方案......................................................................................22.3零部件结构方案分析.....................................................................................32.3.1齿轮形式..............................................................................................32.3.2换挡机构形式......................................................................................32.4变速器设计方案.............................................................................................4三、变速器主要参数的选择......................................................................................53.1挡数的选择....................................................................................................53.2传动比的确定................................................................................................53.2.1传动比范围..........................................................................................53.2.2传动比的确定......................................................................................53.3中心距........................................................................................................63.4变速器外形尺寸.............................................................................................73.5齿轮参数........................................................................................................73.5.1模数.....................................................................................................73.5.2压力角..............................................................................................83.5.3螺旋角..............................................................................................83.5.4齿宽..................................................................................................93.5.5齿顶高系数..........................................................................................93.6各档齿轮齿数的分配.....................................................................................93.6.1确定一挡齿轮的齿数..........................................................................93.6.2对中心距进行修正........................................................................103.6.3确定常啮合传动齿轮副的齿数........................................................103.6.4确定其他各档的齿数........................................................................103.6.5确定倒挡齿轮齿数..................................................................
