ADAPTIVE UNIT FOR FIXATION OF ROCK-CUTTING TOOL Russian patent published in 2010 - IPC E21C35/19 E21C27/44 

FIELD: mining.

SUBSTANCE: adaptive unit for fixation of rock-cutting tool includes cutter holder with hole for cutter tail and elastic element coupled with cutter tail. Elastic element is arranged between cutter tail and hole for tail in cutter holder in internal and external races. At the same time elastic element is non-detachably enclosed between external and internal races so that external surface of external race has the shape of cutter holder hole surface, and internal surface of internal race has the shape of external surface of cutter tail.

EFFECT: pliancy of cutting part along and perpendicularly to axis of cutter, increased strength of hard-alloy reinforcement in case of impact loads, increased efficiency of rock-breaking mining machines.

5 dwg