What is the used of a cylindrical cam with roller follower?

A cylindrical cam with a roller follower is used to convert rotary motion into linear motion. As the cam rotates, the roller follower tracks the cam profile, which causes it to move in a linear direction according to the shape of the cam. This mechanism is commonly employed in automatic machinery, such as in engines or automated assembly lines, to achieve precise timing and movement. Its design allows for smooth and efficient motion transfer, minimizing wear and enhancing durability.