CUTTER TO NUMBER PROGRAM CONTROLLED MACHINE Russian patent published in 2005 - IPC

FIELD: metal working in number program controlled machines.

SUBSTANCE: cutter includes active portion and stem. Cutter apex is arranged in its axis belonging to front surface. Main and trailing back faces are equally inclined relative to cutter axis and they cross front surface by positive back angles relative to main and trailing cutting edges having their own angles in plan view. Trailing back surfaces form second pair of surfaces inclined by the same angles relative to cutter axis. Inclination angles of main and trailing back surfaces relative to cutter axis is determined by value of back angle of main cutting edge. Trailing back surfaces are inclined by less angles relative to cutter axis. Active portion of cutter has at least with two chamfers equally inclined relative to cutter axis.

EFFECT: enhanced strength of cutter, improved stability of manufacturing process.

5 cl, 19 dwg