国上活大峰 Graphical linkage synthesis 6.Six-bar quick return mechanism ©Same base Link 6 fourbar linkage (O,ACO)can be used for a slider output 圆上夫大峰 Graphical linkage synthesis 7.Crank-shaper quick return mechanism © Locate ground on vertical line.Draw a line at angle a/2 Pick length for link 2 Draw line to first at slider. Where this line intersects same length B Link 6 vertical line is the ground Length of output motion Link I can be chosen by moving Link 3 attachment point up or down a/2 Link 4 Link I19 Same base fourbar linkage (O2ACO4) can be used for a slider output 6. Six-bar quick return mechanism Graphical linkage synthesis 20 same length /2 7. Crank-shaper quick return mechanism Graphical linkage synthesis Locate ground on vertical line. Draw a line at angle a/2. Pick length for link 2. Draw line ^ to first at slider. Where this line intersects vertical line is the ground Length of output motion can be chosen by moving attachment point up or down