基于虚约束的平面连杆机构运动副合理设计与配置

Rational Design and Arrangement of Kinematic Pair for Planar Linkages Based on Redundant Constraint

平面连杆机构中广泛存在着虚约束导致机械系统众多的缺陷,已经受到机械结构设计者的充分重视。文中分析了平面机构中虚约束存在的几种形式及其虚约束数的计算,并提出一些对平面连杆机构运动副的合理设计与配置具有指导意义的原则。

The widely existed overconstraints in planar linkages lead to machinery system having numerous defects,which have subjected to more and more attention by designers of machine structure.In this paper,several existing forms of overcontraints and the method for calculating the number of overconstraints in machinery system were analyzed,and some principles for rational design and arrangement of kinnematic pair for planar linkages were proposed.