A rotary cam is a mechanical device that converts rotational motion into linear motion. It consists of a rotating disk or cylinder with a specially shaped profile, which, when turned, pushes a follower along a specific path. This design is commonly used in various machines and automation systems to control the movement of components. Rotary cams are often found in applications such as automated assembly lines, printing presses, and engine timing mechanisms. Their ability to create precise movements makes them essential in industries where accurate timing and positioning are crucial for efficient operation.