三平移混联机构型综合

Type Synthesis of Three-translational Hybrid Mechanisms

针对三平移三自由度混联机构,基于分形理论和机构拓扑图,提出了一种有效的型综合与分析方法。首先,介绍了机构拓扑图和分形理论的概念及联系;其次,叙述了机构的运动特征和运算法则;再次,建立了混联机构与分形的关系模型,从而归纳出混联机构构型综合的具体步骤,并综合出具有三平移运动特征的混联机构;最后,提出了混联机构运动特征的分析方法,并按该方法分析了所综合出的三平移混联机构的末端运动特征,从而验证了该构型的正确性,证实了所提出方法的可行性。

For a three translational hybrid mechanism with three degrees of freedom,an efficient synthesis methodology and a novel analysis approach were proposed from the view of fractal theory and topological graph.Firstly,the basic concept of the topology graph and the fractal theory were introduced.Secondly,the kinematic characteristics and algorithm were expounded.Thirdly,the model between the hybrid mechanism and fractal theory was established.And the procedure of methodology of type synthesis was concluded in detail,meanwhile,the three translational hybrid mechanism was synthesized.Finally,a method for analyzing the kinematic characteristics of hybrid mechanisms was proposed and applied to the synthesized structure by which the validity of the methodology proposed herein was demonstrated.