The follower is what translates the rotation into a specific pattern of reciprocating movement.Ĭlick here for excellent diagrams and photos of cams, and here for mechanism animations.Īvailable to buy here. These variances are what create different kinds of reciprocating movement, via the 'follower'.Ī follower is a rod which has one end that rests on the rotating cam's edge and therefore moves up and down in a certain way depending on the shape of the cam. The cam can be all kinds of shapes including a circle, oval or heart, and the hole through which the shaft goes can be through the centre of the cam or can be off-centre. A shaft (a rod) goes through the hole and it is around this shaft that the cam rotates. A cam is a flat, often round shape with a hole through it. The mechanism is designed to turn a rotary movement into a back-and-forth (reciprocating) movement. Cams and followers: You will find a 'cam' in almost all automata, and it is always paired with a 'follower'. Here are a few main mechanisms and devices you will frequently see when making your own paper automata: The difference between a paper model/sculpture and a paper automaton is that an automaton needs to contain at least one mechanism in order to create a movement. Mechanisms An Introduction To The Basic Mechanisms
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