Elliptic Trammel
Click the figure above to activate the associated video simulation file.
Elliptic Trammel (with multiple tracing points)
Click the figure above to activate the associated video simulation file.
Software copyright © 2004 by The McGraw-Hill Companies, Inc. All rights reserved.
Info
An elliptic trammel is a four-bar linkage with RPPR joints, an inversion of Scotch Yoke. It can be used to trace ellipses (including circles). For reasons that it traces an ellipse, click here.
Source
This Working Model file is adapted from Figure p6-32 on p.325 in Design of Machinery, 3rd ed. by Norton, R. L., McGraw-Hill, 2004, and also from Figure 1.51-1(c) on p.32 in Kinematics and Dynamics of Planar Machinery, by Paul, B. K., Prentice-Hall, 1979, and Figure 2.30c on p.57 in Kinematic Synthesis of Linkages by Hartenberg, R.S. and Denavit., McGraw-Hill, 1964.
Credits
This Working Model file was first developed by Fan (Michael) Mo.