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This paper is dedicated to the classification of four-bar linkages, that is based on their geometric and kinematic characteristics. Depending on the type of links, which could be a crank, a rocker, a 0-rocker and a π-rocker, all fourbar linkages are divided into 27 groups. The proposed classification is a good basis for computer simulations that include motion analysis and motion visualization, which in turn could help to enhance students’ understanding of this unit properly. Primarily, this paper has educational importance in the field of 3D modeling and synthesis of mechanisms.

Classification, geometrical and kinematic analysis of four-bar linkages