文档介绍：科毕业设计
题目
自行车无极变速器的设计
学院—
XX学院
专业
机械设计制造及其自动化
学生姓名
学号—
年级 11
指导教师
职称讲师
2016年3月13日才商要：随着国民经济的持续发展，机on the analysis of all kinds of continuously variable transmission and continuously variable speed bicycle, the outer cone type stepless speed changer of the steel ball is modified to form the stepless speed change device of bicycle. The device can be used for inputting and outputting power by eight steel balls, and a pair of helical gears are used for indexing and regulating speed, so that the bicycle can be stepless speed regulation between and . Research shows that: continuously variable transmission can be used in the bicycle can greatly improve the performance of the use of bicycles, to facilitate the use of the vast number of consumers.
This paper introduces the bicycle without transmission structure composition, working principle and main parts design must have the theoretic calculation and strength check, and to carry out innovative design of the structure, the advantages of the transmission is the transmission chain is short, high efficiency, easy processing, so that is convenient in use and maintenance, and is suitable for work in the harsh environment. The main is the transmission efficiency is high.
Key words: planetary gear type power shift gear box;Crankshaft;Processing craft;Fixture
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目录
摘要 I
Abstract II
1绪论 1
1课题的来源及研究的目的和意义错误!未定义书签。
2本课题研究的主要内容 3
2自行车无级变速器总体方案设计 5
1钢球长锥式（RC型）无级变速器 7
9
3钢球外锥式无级变速器部分零件的设计与计算 11
1钢球与主、从动锥齿轮的设计与计算 13
15
17
错误!未定义书签。
3. 错误!未定义书签。
20
5调速机构的设计与计算 21
21
4变速器内部主要传动零件的强度校核 22
1锥轮的强度校核 22
23
结论 23
参考文献 24
致谢 25
1绪论

由于机械工程的知识