浮动凹弧底推杆-盘形凸轮组合机构的运动保真性研究  

Research on motion fidelity of floating concave arc pushroddisc cam combination mechanisms

作　　者：常勇[1,2] 屈成龙 

机构地区：[1]集美大学机械与能源工程学院,福建厦门361021 [2]集美大学工程训练中心,福建厦门361021

出　　处：《工程设计学报》2014年第4期398-404,共7页Chinese Journal of Engineering Design

基　　金：国家自然科学基金资助项目(51175224);福建省自然科学基金资助项目(2010J01302;2006J0169)

摘　　要：浮动凹弧底推杆-盘形凸轮组合机构的Ⅰ类综合问题即是其综合理论的重要内容,又是其工程推广应用的重要准备.然而,机构的Ⅰ类综合问题是一个十分复杂的问题,难以一次性解决."运动保真条件"是Ⅰ类综合问题必须首先保证的重要前提性条件.将"支撑函数法"应用于浮动凹弧底推杆-盘形凸轮组合机构,成功解决了预设凸轮轴心O1(xO1,yO1)条件下,凸轮曲率半径的通用公式和"运动保真条件".在为未来解决该类机构Ⅰ类综合问题奠定重要前提基础同时,还将"支撑函数法"推广拓展为适用于新型组合机构的一种通用有效方法.The class Ⅰ synthesis problem of floating concave arc bottomed pushrod-disc cam com-bination mechanisms is not only an important content of its synthesis theories ,but also the basis of its engineering application .However ,the class Ⅰ synthesis problem is very complicated ,it is difficult to be resolved at once .＂Movement fidelity condition＂is an important prerequisite condi-tion of class Ⅰ synthesis problem .The ＂supporting function method＂is applied to floating con-cave arc pushrod-disc cam combination mechanisms .T he computational formula of curvature ra-dius and ＂movement fidelity conditions＂ of the cam mechanisms were studied and solved ,which met the premise of the class Ⅰ synthesis problem-preset the conditions of cam axis O1 （ xO1 , yO1 ） .The results lay an important theoretical foundation for solving the class Ⅰ synthesis prob-lem ,while the ＂supporting function method＂ is extended as a generic method to apply on new type combination mechanisms .

关 键 词：浮动凹弧底推杆 盘形凸轮 浮动坐标系 Ⅰ类综合 支撑函数 运动保真 

分 类 号：TH112.2[机械工程—机械设计及理论]