PROGRAM 2.2a Quick Return Mechanism
Input the lengths of the links

length of the fixed link

crank

link 4

link 5

link 7

height of the slider

start calculating the mechanism displacement

input angle in rad. step each 10 degrees

1st closure

2nd closure

1st closure

2nd closure

Locations of the mechanism joints through the motion

Crank location

Tip of Link 4 location

position of C by 1st closure

position of C by 2nd closure

closure #1

closure #2

Motion over One Cycle
(1st closure)

Motion over One Cycle
(2nd closure)

Plot the results (links). Use polar plots to avoid distortion of the aspect ratio.

change to avoid bug in mathcad

Motion over One Cycle
(1st closure)

change to avoid bug in mathcad

Motion over One Cycle
(2nd closure)