| 摘要 |
FIELD: manufacture of mining machinery. SUBSTANCE: rock-cutting tool includes working head and holder with shank for accommodation in through channel of cutter holder and formation of internal circular channel of variable cross-section for discharge of cuttings. Holder is made with supporting surfaces of the same mounting diameter over its length. Made between supporting surfaces is taper bore conjugated with its large diameter with bearing surface on the side of working head and made on holder in place of location of bearing surface located on the side of shank are longitudinal through recesses for discharge of cuttings. EFFECT: higher efficiency. |
