变速箱设计毕业设计.docVIP

变速箱设计毕业设计 篇一：变速箱毕业设计 摘要 汽车，在现代社会中占有举足轻重的地位。而变速器是汽车传动结构中最主 要的部分之一，汽车的前进、后退，增速、减速都要靠变速器传动来实现。而且 变速器在汽车的动力性和燃油经济性上也有很重要的影响。 本次设计的汽车变速器主要是从强度方面来对齿轮的尺寸计算及校核，轴的 尺寸计算和位置的确定，选择设计满足其承载能力的轴承。利用软件autoCAD 完成变速器的装配图、第一轴、第二轴、中间轴、各档齿轮等零件的零件图。 关键词：传动方案；关键零部件设计；校核 Abstract the car, in modern society plays a significant role. And transmission auto transmission structure is one of the most important part of the car, forward, backward, growth, slowing down all must depend on the transmission transmission to achieve. And the transmission in a car#39;s fuel economy performance and there is also very important influence. The design of the auto transmission mainly from the strength of gear to the size of the check, the axis calculation and the size of the calculation and positioning, selection of design meet the bearing capacity of the bearings. Use autoCAD software complete transmission shaft assembly drawing, the first, the second shaft axis, the gear, gear, etc parts as figure. Keywords: transmission scheme; Key parts design; check 目录 摘要 ............................................................................................................................... I Abstract.......................................................................................................................................... I 第一章 绪 论 ........................................................................................................................ 3 1.1变速器的功用................................................................................................... 3 1.2变速器的组成................................................................................................... 3 1.3 国内外工程机械变速箱的发展现状.............................................................. 3 1.4 国内外变速箱的研究现状.............................................................................. 5 1.5 变速箱存在的关键科学问题及缺陷 .......................................................... 6 1.5.1我国变速箱的研制存在的关键技术问题..................