The peck drilling cycle or high–speed peck drilling cycle is used depending on the setting in RTR, bit 2 of parameter No. 5101. If depth of cut for each drilling is not specified, the normal drilling cycle is used.
High–speed peck drilling cycle (G83, G87):-
This cycle performs high–speed peck drilling. The drill repeats the cycle of drilling at the cutting feedrate and retracting the specified retraction distance intermittently to the bottom of a hole. The drill draws cutting chips out of the hole when it retracts.
Format:-
G83 X(U)_ C(H)_ Z(W)_ R_ Q_ P_ F_ K_ M_ ;
or
G87 X(U)_ C(H)_ Z(W)_ R_ Q_ 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.)
