How does an ellipse shaped cam move?

An ellipse-shaped cam moves in a way that translates its elliptical profile into a linear or rotary motion of a follower. As the cam rotates, the varying radius of the ellipse causes the follower to rise and fall, creating a non-uniform motion. This results in periodic changes in the follower's position, allowing for the precise control of timing and movement in mechanical systems, such as in engines or automated machinery. The motion is often characterized by a smooth and continuous transition due to the cam's curved shape.