CHOPPER Russian patent published in 2014 - IPC B02C18/00 

FIELD: mechanical engineering.

SUBSTANCE: chopper comprises a rotor, a stator and knives fixed in the rotor and stator. The knives are made with two cutting edges - end and radial. The end cutting edge of the rotor or stator knife is perpendicular to the radial cutting edge, is facing to the working end surface of the stator or the rotor and made tangent to the end plane, belonging to the end surface of the rotor or stator. The radial cutting edge of the knife is parallel to the rotation axis of the rotor or stator and is moved away from its centre to the overall circumference at a distance of the rotor or stator radius. The knives are mounted in the heads with the minimum possible gap between the radial cutting edge and the inner cylindrical surface of the housing equal to 0.02-0.05 mm. The rotor and stator are installed with a gap between their end surfaces equal to 0.02-0.05 mm.

EFFECT: improvement of the grinding fineness.

2 cl, 11 dwg