Abstract: Based on the theory of structural synthesis and classification of degenerate-rank parallel robot mechanisms, which uses the units of single open chain limb. An intelligent, systematic and effective new method is put forward, which utilizes intelligent structural synthesis and classification of the parallel robot mechanisms by using VB. The method can produce a series of models according to the output movement characteristics of activated platform and degrees of freedom, and provide the foundation for a series of work such as kinematics and dynamics analysis. The new method can make the structural synthesis of 3-DOF space parallel robot mechanisms automated. It is of universal significance and can be applied to mechanisms with other kinematics output types. Previous methods were repetitious, tedious inefficient and prone to make mistakes. The new method overcomes these problems, paves a new path for synthesis research development and has good application prospect.

Key words: Intellectualized structural synthesis and classification, Parallel robot mechanisms, Single open chain limb