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Drilling cycle G83 or G87

Drilling cycle (G83 or G87):-
If depth of cut is not specified for each drilling, the normal drilling cycle is used.  The tool is then retracted from the bottom of the hole in rapid traverse.


Format:-
G83 X(U)_ C(H)_ Z(W)_ R_ P_ F_ K_ M_ ;
or
G87 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.)Examples


Example:-
M51  ;                       Setting C–axis index mode ON
M3 S2000 ;               Rotating the drill
G00 X50.0 C0.0 ;       Positioning the drill along the X– and C–axes
G83 Z–40.0 R–5.0 P500 F5.0 M31 ;   Drilling hole 1
C90.0 M31 ;              Drilling hole 2
C180.0 M31 ;            Drilling hole 3
C270.0 M31 ;            Drilling hole 4
G80 M05 ;    Canceling the drilling cycle and stopping drill rotation
M50 ;                        Setting C–axis index mode off
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