Curvilinear Translation
WM2D |
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Software copyright © 2004 by The McGraw-Hill Companies, Inc. All rights reserved.
Info
The output link (in black, at the upper left corner) of the eightbar linkage (on left) and the sixbar linkage (on right) has curvilinear translation (parallel motion) with no translation. This is demonstrated by three coupler curves, traced by three points, having identical shapes at different locations.
Either sixbar linkage or eightbar linkage is a cognate of the fourbar linkage (shown in red) providing parallel motion that follows the coupler curve of the fourbar. The two cognate linkages derived from the Roberts diagram.
Source
The curvilinear translation - eightbar and sixbar are adapted from Figure 3-27c and 3-27d respectively on p.128 in Design of Machinery, 3rd ed. by Norton, R.L., McGraw-Hill, 2004.
Credits
This Working Model file was first developed by Jie (Jeff) Yang.