ABSTRACT
The four-bar mechanism is often considered the most basic of all kin ematic mechanisms . Consisting of four rigid links (AB , BC, CD, and AD) and four turning pairs (A, B , C, and D) as shown in Figure 1 4 . 1 , this mechanism can b e arranged i n three basic configurations and , ac cordingly, is classified as follows :
The crank-rocker mechanism, where drive crank AB is capable of complete rotation while the follower CD oscillates . Here the drive crank must be the shortest link.
