Front Boring Cycle (G85) / Side Boring Cycle (G89)
This cycle is used to bore a hole.
Format:-
G85 X(U)_ C(H)_ Z(W)_ R_ P_ F_ K_ M_ ;
or
G89 Z(W)_ C(H)_ X(U)_ R_ P_ F_ K_ M_ ;
X_ C_ or Z_ C_ : Hole position data
Z_ or X_ : The distance from point R to the bottom of the hole
R_ : The distance from the initial level to point R level
P_ : Dwell time at the bottom of a hole
F_ : Cutting feedrate
K_ : Number of repeats (When it is needed.)
M_ : M code for C–axis clamp (When it is needed.)Explanations
After positioning, rapid traverse is performed to point R. Drilling is performed from point R to point Z.
After the tool reaches point Z, it returns to point R at a feedrate twice the cutting feedrate.
