CUTTING TOOL FOR DESINTEGRATION OF COAL AND OTHER MINE ROCKS

摘要

FIELD: mining engineering. ^ SUBSTANCE: invention relates to mining industry, particularly the cutting tools of mining machines serving to disintegrate coal and other mine rocks. The cutting tool for disintegration of coal and other mine rocks consists of a tool holder with a lengthwise passage for water supply and a cutting tool cartridge as a core with through microcanals connecting the surface of the cutting tool cartridge working part with the lengthwise passage of the tool holder. Outlet holes of the microcanals on the surface of the cutting tool cartridge are made as contour rows positioned throughout the entire length of the working surface forming a cone. This structure increases the distance between the rows of the outlet holes as it gets further away from the top of the core, and the density of distribution of the microcanal external holes on the working surface of the cutting tool cartridge rises toward the top of the core. ^ EFFECT: extended life of a cutting tool and decreased wear of the cutting tool cartridge. ^ 1 dwg