Kinematic and dynamic characteristics in a crank-rocker four-bar linkage

Abstract

Planar four-bar linkage is widely used in mechanical engineering. The degree of freedom of the linkage is one, and different organizations of the lengths of the four bars could distinguish it in several different types. The one is the crank-rocker mechanism. The parameters decided by the lengths of the bars are the wiping angle, transmission angle, and the quick-return ratio, which were analyzed in this report. Then the three-dimensional model and the physical model were built. In addition, the kinematic characteristics of the prototype were deduced by simulation, and some experimental works researched dynamic characteristics. Finally, the conclusions about the linkage were made.