Optimal Synthesis of a SingleDwell 6Bar Planar （最优合成的SingleDwell 6Bar平面）.pdf

International Journal of Computational Engineering Research||Vol, 0 4 ||Issue, 2 || Optimal Synthesis of a Single-Dwell 6-Bar Planar Linkage Galal A. Hassaan Mechanical Design Production Department, Faculty of Engineering, Cairo University, Giza, Egypt ABSTRACT Six-bar linkage of single or double dwell linkage are used to overcome the problems of cam-follower mechanisms. Optimal synthesis of dwell mechanisms provides accurate synthesis fulfilling most of the functional constraints imposed to satisfy the mechanism specifications for proper operation.In the present work, the synthesis problem is formulated in the form of an objective function and three functional constraints. The synthesis problem incorporates seven parameters to be optimally evaluated covering all the links of the mechanism. The transmission angle of the 4-bar linkage and at the output slider are both considered to control the performance quality of the synthesized mechanism.In an application on the methodology presented, it was possible to synthesize 6-bar planar linkage for a single dwell across 60 degrees of crank rotation with a maximum error of 0.229 %. KEYWORDS: optimal mechanism design – 6-bar planar linkage – single-dwell mechanism. I. INTRODUCTION It is difficult to synthesize 6-bar planar dwell mechanisms using the geometrical-graphical analysis approach. This simply because this approach requires exactly circular parts of the coupler point within a specific crank angle. Optimal mechanism synthesis is the proper solution which provides accurate and straight forward synthesis. Some approaches are available in the l