Trammel
A Trammel of Archimedes is a simple mechanism that translates the linear motion of two sliders into elliptical rotation. The length of each slider's path represents either the major or minor axis of the formed ellipse. In order for the mechanism to move freely, I designed the trammel to have as little friction as possible. The materials I chose and the forgiving geometry of both the channels and sliders allows the finished trammel to be easily operated with one hand. This project required considerable precision, and I had to include the various machine screws, press fits, shoulder screws, and their appropriate tolerances in my SolidWorks model.
Process SolidWorks, laser cutter, 3D printer
Materials/Finish Colored and clear acrylic, printed ABS plastic, 6-32 Machine Screws, 1/4" Shoulder Screws
Design
