Doing Nothing With The Trammel Of Archimedes

Doing Nothing With The Trammel Of Archimedes

Years ago, my uncle gave me a wooden toy, consisting of a main block with two perpendicular channels cut through. There are shuttles confined to the channels, and a lever is connected to both shuttles with fixed pivots. It’s a classic “do-nothing machine,” and it’s sat on my desk for many years. Today I know it’s otherwise known as a trammel of Archimedes, and contrary to the do-nothing name, the end of the lever actually follows an elliptical path, which can be quite useful. I decided to simulate one in Fusion to further practice mechanisms. There is, of course, math behind this, but I actually modeled this from life, using calipers to copy my desk toy. Mission accomplished.

I made a useless crank. But from scratch. No tutorial this time! #CAD #fusion360 #mechanism #useless #improving

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