MECHANICAL ICE DRILLING BIT Russian patent published in 2012 - IPC E21B10/00 G01N1/08 

FIELD: mining.

SUBSTANCE: mechanical ice drilling bit includes housing on the edge of which detachable cutters are fixed, which are located symmetrically in radial direction where the cutting edge of cutters is turned inward the bit, and core breaker. Cutting edges of cutters are offset relative to each other in radial direction without overlapping each other and equal to 1/n of the cutter width, where n - the number of the bit cutters.

EFFECT: increasing mechanical drilling speed, increasing run drilling, reducing the power consumption of the cutting process owing to decreasing the thickness of the cut layer with each cutter.

1 dwg