CUTTING DEVICE WITH NARROWING CUTTING ELEMENT Russian patent published in 2021 - IPC E21C25/16 E21C25/06 E21C27/20 E21C35/18 

FIELD: mining industry.

SUBSTANCE: group of inventions relates to machines for mining or field development. The cutting device for interaction with the bottomhole plane contains a disk mounted with the possibility of rotation around the axis of rotation, and a set of cutting elements fixed to the disk. The disk includes a peripheral edge passing around the axis of rotation. The set of cutting elements is located at a distance from each other along the peripheral edge of the disk and is located in the cutting plane, distanced from the disk. Each of the cutting elements includes a main section, a cutting section including a cutting edge, and a longitudinal axis passing through the cutting edge. The cutting section has a width that is greater than the width of the main section, wherein the cutting edge is aligned with the cutting plane, which is essentially orthogonal relatively to the axis of rotation.

EFFECT: reduced tension and increased service life of the cutting elements.

40 cl, 14 dwg