平面连杆机构的自调及其允差的分析研究  

Research on Self-adjustment and Allowable Errors of Planar Linkage Mechanism

作　　者：安培文[1] 黄茂林[1] 

机构地区：[1]重庆大学机械工程学院,重庆市400044

出　　处：《中国机械工程》2002年第23期2040-2044,共5页China Mechanical Engineering

基　　金：国家自然科学基金资助项目 (5 0 0 75 0 87)

摘　　要：以 - - - 运动副配置的无过约束平面曲柄滑块机构为研究对象 ,分析了机构自调的机理及其自调时圆柱副中的位移协调规律 ,根据移动副中的自锁条件导出机构能够实现自调的条件 ,在此基础上 ,得到机构能够实现自调的允许误差角 ,为消除或减小过约束机构结构的采用以及机械的精度设计提供了理论依据。In this paper,a planar slide-crank mech anism with Ⅴ-Ⅴ-Ⅳ-Ⅲ kinematic-pair configuration, which is non-overconstraint, is analyzed for its mechanism of self-adjustment and the displacement equations of self-adjustment in the cylindrical pair are obtained. Conditions of self-adjustment of the mechanism are derived according to condition of self-locking in the prismatic pair. With this understanding, allowable angular error with that the mechanism can self-adjust are found, and some conclusions about configuration design of self-adjustment mechanisms are gained, and thereby theoretical foundation is provided for precision design of machines and structural synthesis of mechanisms in which overconstraints are minimized or eliminated.

关 键 词：平面连杆机构 过约束 曲柄滑块机构 误差 敏感度 自调机构 

分 类 号：TH112[机械工程—机械设计及理论]