CAM stands for 

Computer-aided manufacturing  (CAM) is the use of software to control  machine tools  and related ones in the  manufacturing  of work pieces. This is not the only definition for CAM, but it is the most common;  CAM may also refer to the use of a computer to assist in all operations of a manufacturing plant, including planning, management, transportation and storage.  Its primary purpose is to create a faster production process and components and tooling with more precise dimensions and material consistency, which in some cases, uses only the required amount of raw material (thus minimizing waste), while simultaneously reducing energy.