DRILL Russian patent published in 2000 - IPC

FIELD: mechanical engineering. SUBSTANCE: drill is used for machining of metal materials with formation of chips. Drill has body one end of which is provided with hole for entry into internal cavity, while the other, has upper operating surface where one or several cutting plates made of hard alloy and soldered in respective sockets are positioned. Sockets and cutting plates are positioned on upper side of body tangentially. Rear anvil sides of sockets corresponding to rear anvil sides of cutting plates are of semicircular form. Manufacture of sockets for cutting plates and pressing of cutting plates are simplified and number of different types of cutting plates is reduced in particular one. EFFECT: simplified manufacture. 6 cl, 9 dwg