INSERT FOR ROCK-BREAKING TOOL Russian patent published in 2003 - IPC

FIELD: mining and construction industry. SUBSTANCE: invention can be utilized in manufacture of rock-breaking tool used to develop natural and man-made materials. Insert of rock-breaking tool includes working part with profile of section of curve described by equation with its rotation around axis of ordinates coinciding with longitudinal symmetry axis of insert and conjugate to side surface of cylindrical base and tail having shape of two conjugate truncated cones with same orientation with reference to base of insert. Ratio of heights of insert and its tail H/h lies within bounds from 4.45 to 6.5. EFFECT: prolonged service life and increased operational reliability of insert. 5 cl, 3 dwg