圈上泽支大学 Graphical linkage synthesis 5.Grashoff quick return crank-rocker 90-0 圆上泽夫大峰 Graphical linkage synthesis Larger time ratios of 1:2 can be obtained based on Six-bar linkage based on Grashof fourbar crank-crank mechanism Crank-shaper mechanism 16E θ φ θ 90°-θ P A D C2 C1 5. Grashoff quick return crank-rocker Graphical linkage synthesis 16 Larger time ratios of 1:2 can be obtained based on • Six-bar linkage based on Grashof fourbar crank-crank mechanism • Crank-shaper mechanism Graphical linkage synthesis