ABSTRACT
The grain threshing process consists of grain detachment from the flowery cover (ears, panicles, cobs, pods, etc.) until they can move freely, due to a series of phenomena caused by impact and centrifugal forces, friction generated through a mechanical action, and friction among different components of the ears. The grain separating process, which follows closely the threshing process, consists of free-moving grain migration through the material-otherthan-grain (MOG) mixture, followed by their directed passage through the openings of a separating metallic surface.
