Roberts Diagram-Chebyschev Linkage

 
WM2D File

Click the figure above to activate the associated video simulation file.

Software copyright © 2004 by The McGraw-Hill Companies, Inc. All rights reserved.

Info

Cognate linkages are of different geometry and generate the same coupler curve. The lower left figure is Roberts diagram generating two linkages with identical coupler curve as the original linkage, Chebyschev linkage, shown on top. The simulation file shown in the lower right separates the three linkages in the Roberts diagram and animate.

The Hoeken linkage, the cognate on the left of  the Chebyschev linkage, is a Grashof crank-rocker. To trace the straight-line curve, the Hoeken linkage is more practical than the Chebyschev linkage, a Grashof double-rocker.

Source

The Working Model files are adapted from Figure P3-26 on p.126 in Design of Machinery, 3rd ed. by Norton, R.L., McGraw-Hill, 2004.

Credits

These Working Model files were first developed by Jie (Jeff) Yang.