二轴五档变速器.doc

摘 要 关键词 ；； Abstract Transmission is more cruical in automotive driveline components, it is dseigned to ditectly affect the quality of the actual use of performance automobiles. Transmission to change the engine reached on the driving wheel torque and speed, is aimed at marking start, climbing, turning, accelerate various driving conditions, the car was different traction and speed Meanwhile engine in the most favorable working conditions within the scope of the work. And the trans mission in neutral gear with reverse gear. Transmission also need power output function. Gearbox because of the low-grade work at a larger role, In general, the low-grade gearbox layout are close to the axis after support, Following from low-grade to high-grade order of the layout of stalls gear. This will not only allow axis are large enough for a rigid, but also ensures easy assembly. Gear box overall structure and rigid axle and the shell structure of relations. Generally through the control shaft length control over several stalls to ensure that adequate gear box rigid. This paper describes the design of two-axis five block manual trans mission, the transmission principle of work elaborated, Transmission of the gear shaft and do a detailed design, and the intensity of a school. For some standard parts for the selection. Transmission Trans mission program design. A brief description of the trans mission of all components of the material choice. Keywords Block Transmission ratio Gear Axis Checking 目 录 要 I Abstract II 第1章 绪论 1 1.1 概述 1 1.1.1 设计二轴五档变速器的目的和意义 2 1.1.2 汽车变速器设计要求 2 1.1.3 研究变速的现状 3 1.2 变速器的设计思想 3 第2章 变速器传动机构与操纵机构的布置 4 2.1 变速器传动机构的布置方案 4 2.1.1 变速器传动方案分析与选择 4 2.1.2 倒档布置方案 5 2.2 操纵机构布置方案 6 2.2.1 概述 6 2.2.2 典型的操纵机构以及锁止装置 7 2.3 本章小结 9 第3章 变速器设计的总体方案 10 3.1 变速器主要参数的选择 10 3.1.1 档数 10 3.1.2 传动比范围 10 3.1.3 变速器各档传动比确定 11 3.1.4 中心距的选择 12 3.1.5 齿轮参数的选择 13 3.1.6 各挡齿轮的分配及传动比的计算 14 3.2 变速器齿轮强度校核 20 3.2.1 变速器齿轮弯曲强度的校核 21 3.2.2 轮齿接触应力的校核 22 3.2.3 变速器齿轮的材料及热处理 23 3.3 轴的结构和尺寸设