Drafting Arm

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

WM2D File

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

Info

Two sets of parallel linkages coupled by a disk (in red) will move the straight edge (in yellow) in any position to draw lines in parallel. The orientation of straight edges can be adjusted in the blue disk.

In the simulation file, the orientation can be modified in the slider control box.

Source

This Working Model file is adapted from Figure P2.4(e) on p. 78 in Design of Machinery, 3rd ed. by Norton, R.L., McGraw-Hill, 2004.

The figure is also shown as Figure 3-20 on p. 55 in  Kinematics and Dynamics of Machines, 2nd ed. by Martin, G.H., McGraw-Hill, 1982.

Credits

This Working Model file was first developed by Fan (Michael) Mo.