Worm Gear :

Essential Mechanism

Turn the handle on the Worm Gear / Cam box and the gear inside advances one turn for each turn of the handle, a speed reduction of 12:1. Inside the box is a snail cam and cam follower which slowly lift as the gear turns and then suddenly drop at the end of the twelve turn cycle.
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Worm Cam…

Essential Mechanisms…

Caterpillar Prototype:

I'm in the process of developing a moving caterpillar model. You can follow along with the design process on the blog by clicking on the link below.

Caterpillar…

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