CUTTER WITH ROUND TAIL WITH CUTTER SUPPORT Russian patent published in 2009 - IPC E21C35/18 E21C35/197 

FIELD: mining.

SUBSTANCE: suggested invention is related to the field of mining and construction, in particular to cutters with round tails. Cutter with round tail comprises tail, at the same time tail is retained with the possibility of rotation in clamping cartridge. Clamping cartridge is equipped with one or several retaining elements that protrude inside, which enter circular groove arranged in cutter tail, so that clamping cartridge is retained on round tail of cutter without possibility of shift in axial direction. One or several retaining elements are installed in medium transverse plane of clamping cartridge or have identical axial distance from it. Clamping cartridge is arranged with the possibility of installation in two axial positions turned by 180° around its longitudinal axis on round tail of cutter and fixation on it selectively in one of both identical positions. Retaining elements are arranged between two oriented forming edges across longitudinal axis of clamping cartridge and are stamped and/or impressed inside. Besides forming edges pass along part of clamping cartridge circumference and have distance from each other, which is equal or less than width of circumferential groove in round tail of cutter.

EFFECT: simplified installation of clamping cartridge on round tail of cutter.

11 cl, 4 dwg