This document contains instructions for designing four-bar and six-bar linkage mechanisms to move a link between different positions as shown in a figure. It includes four problems asking students to design linkages to move the link between one, two, or three specified positions in the figure and build cardboard models with driver dyads.

1. DESIGN OF MACHINERY 3rd Ed. by ROBERT L. NORTON © McGraw-Hill 2004
D3 0.834
D2
2.250
2.090
C3
C2 D1
1.350
0.743
3.428 3.100 1.212
2.714 C1
3.000 1.896 1.200
O2 O4
FIGURE P3-17
Problems 3-59 to 3-62
3-59 Design a fourbar mechanism to move the link shown in Figure P3-17 from position 1 to
position 2. Ignore the third position and the fixed pivots O2 and O4 shown. Build a
cardboard model and add a driver dyad to limit its motion to the range of positions
designed, making it a sixbar.
3-60 Design a fourbar mechanism to move the link shown in Figure P3-17 from position 2 to
position 3. Ignore the first position and the fixed pivots O2 and O4 shown. Build a
cardboard model and add a driver dyad to limit its motion to the range of positions
designed, making it a sixbar.
3-61 Design a fourbar mechanism to give the three positions shown in Figure P3-17. Ignore
the fixed pivots O2 and O4 shown. Build a cardboard model and add a driver dyad to
limit its motion to the range of positions designed, making it a sixbar.
3-62 Design a fourbar mechanism to give the three positions shown in Figure P3-17 using the
fixed pivots O2 and O4 shown. (See Example 3-7.) Build a cardboard model and add a
driver dyad to limit its motion to the range of positions designed, making it a sixbar.