MEMBER FOR CUTTING DEEP HOLE TO CUT DEEP HOLE APPLIED TO GUN DRILL SYSTEM

摘要

PURPOSE: A deep hole cutter is provided to improve the cutting efficiency by sufficiently securing the rigidity of the connected portion between a tool shank and a cutting head and to smoothly discharging cutting scraps. CONSTITUTION: One discharging groove(6) is installed in the outer circumference of a cutting head(2) to be linked with the lengthwise discharging groove of a tool shank in a straight line. A bypass passage hole(7) is formed from the end of the cutting head to the discharging groove via the inside of the head. Plural cutting blades(9a¯9c) are distributed in the discharging groove, the bypass passage hole and a discharging outlet(7a). Thereby, the cutting efficiency is improved.