盘形凸轮轮廓曲线的设计.docVIP

目 录摘要 1 1. 绪论 3 1.1 凸轮机构概述 3 1.2凸轮机构课题研究背景及意义 3 1.3 凸轮机构国内外发展及研究状况 5 2. 盘形凸轮轮廓曲线的设计 8 2.1 反转法概念 8 2.2 反转法的原理： 8 2.3 对心直动尖顶从动件盘形凸轮机构轮廓曲线的设计 8 2.4 对心直动滚子从动件盘形凸轮机构轮廓曲线的设计 10 2.6 对心直动平底从动件盘形凸轮机构轮廓曲线的设计 11 2.7 偏置尖顶直动从动件盘形凸轮机构 11 2.8 摆动从动件盘形凸轮机构 12 3. 盘形凸轮轮廓曲线的参数化设计 13 3.1 盘形凸轮基圆半径的确定 13 3.2 确定摆动从动件盘形凸轮基圆半径的方法 13 3.3 凸轮轮廓曲线的数学模型 14 3.4 盘形凸轮轮廓曲线的计算 16 3.5 轮廓面方程的建立 16 3.6平面盘形凸轮系统的开发 17 总结与展望 18 致谢 19 参考文献 20 盘形凸轮轮廓曲线的设计 【摘要】本文分析了反转法的基本原理、图解法的方法和步骤,阐述了几种盘形凸轮轮廓曲线的设计方法,并配以图形来解析,在现实生活中我们经常可以见得到凸轮机构,在各种机械,特别是自动机和自动装置,广泛采用各种形式的凸轮机构.凸轮机构常用与内燃机的装配机构,自动机场的进刀机构以及各种自动装置中.凸轮机构的有点在于要适当的设计出凸轮轮廓曲线,就可以使推杆得到各种预期的运动规律,而其响应快速,机构简单紧凑。这些优点使得它不能被数控,电控设备完全代替。随着现代机械的发展和计算机辅助设计和制造获得了普遍应用,凸轮机构的设计和加工的速度和质量越来越高,凸轮运动速度也越来越高,这就为凸轮机构更广泛的应用创造了条件。 关键词反转法凸轮轮廓曲线 Design of cam profile curve 【Abstract】In real life we can often see cam, particularly automata and robotics, widely used in various forms of cam. Can is commonly Used for internal combustion engine valvetrain, automatic feed mechanism of machine tools ,as well as variety of robotic. Advantage is as long as the appropriate design of cam. Motion of the push rod can be expected, and its fast response , institutions simple and compact. These advantages make it cannot be NC, electrical control equipment and completely replaced .As modern machinery is increasingly informed the development and application of computer–aided design and manufacturing was general ,cam design and machining speed and quality become higher and higher ,cam movement speed is geeting higher and higher ,which created the conditions for a wider application of cam. This design is intended to complete the base circle radius r=500mm maximum lift and follower h=30mm Push way motion angle =120 Far angle of repose =60o, return angle =120o and near of Angle of repose =60o, follower pushing motion law of Cheng Yi speed increase ,return to, sine acceleration motion law of Downward bias follower disc cam mechanism with roller follower of the designs. 【Key Words】 evers