DRILL DISK BIT Russian patent published in 2016 - IPC E21B10/12 

FIELD: mining.

SUBSTANCE: invention relates to rock-breaking tool, specifically a rotary drill bit. Drilling disk drill bit comprises a hollow U-shaped body with a connecting nipple mounted in body a horizontal axis with attached disk cutters and annular abutments, made as inner end surface of disk cutters in form of bevel gears mounted to engage with each other and radially fixed channel axis cutters reinforced central cone, shank of which is rigidly connected to one of ring stops and located eccentrically in a vertical plane relative to longitudinal bit axis. Horizontal axis of bit is provided with longitudinal and radial channels being communicated with nipple cavity bit through wash nozzle coupled with housing, wherein radial channels horizontal bit axis directed into gap between outer surface of central cone and inner end surfaces of disc cutters and radial channels flushing nozzle communicated through radial channels of central cone of shank with a longitudinal axis of horizontal channel.

EFFECT: technical result consists in improvement of mechanical drilling speed by improving cleaning from bottom sludge.

1 cl, 1 dwg