Cams By Jeffrey Lin

A cam is a circular object that is very important to an automaton because it helps move the shaft up and down. It also is very useful because it can make the automaton a great toy for a baby.
A cam can turn circular motion into linear motion and also make it turn around and around if it has a cam follower attached to it. It is very important but without the other objects the cam would be very useless. If there was no axle, the cam wouldn't turn. Also if there wasn't a cam an automaton wouldn't  be able to move.
The cam drives an automaton by making the shaft go up and down. First you turn the handle to make the cam turn around then it moves the shaft up and down, the sleeve makes the shaft be stable and not go side to side.

Automata are very wonderful toys for every one to play with but if you want to make an automaton you have to know what important parts you need!