The principle construction of your maize threshing machine has stander body,feeding gap,rollers,discharging hole and so forth.when maize goes into the machine,the rollers rotates,friction, Extrusion and propulsion to remove the kernels from the corn cob,because the roller is made of rubber, the kernels won't be damaged,this kind is just single threshing https://food-production-machinery79012.dreamyblogs.com/439098/rumored-buzz-on-peanut-sheller-machine