Computerized numerically controlled machine for drilling deep holes in material generating long turnings, with periodic advance interruption avoiding frequent removal to clear swarf from bore

摘要

Method for drilling deep holes in material that generates long turnings or swarf using a CNC (Computer Numeric Control) machine in which the tool advance to advance interruption occurs in the ratio 2 to 1, i.e. for each two drill bit rotations with a pushing force, there is one drill bit rotation without advance. The ratio can be adjusted for different drilling depths and for different material.