1. Moving Toys This term we are going to focus on one particular mechanism......cams

2. What is a cam? Best described as an odd shaped wheel Used to convert rotary motion into linear motion As the cam rotates then the follower follows the shape (profile) of the cam Different shaped cams will cause the follower to move up and down in a different way.

3. Cam follower – Follows the outline (profile) of the cam wheel, moving up and down as a result W heel or Cam – Remains in a fixed position. Turns causing the toy to move up and down as required Crank Handle – Operates the mechanism by turning the axle and cam wheel Axle – Supports and turns the cam wheel Frame - Holds the mechanism in place and provides stability A simple cam mechanism consists of...

4. Now onto some design ideas... What could you make? Think about the movement

5. Your design What will it look like? What will you use to make it? How will it work? Detailed, annotated (labelled) drawing... of the front (what you will see)and the back (what you won’t see!) Think about different possibilities