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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Peck drilling cycle (G83, G87)

Peck drilling cycle (G83, G87):-

Format:-

G83 X(U)_ C(H)_ Z(W)_ R_ Q_ P_ F_ K_ M_ ;

or

G87 Z(W)_ C(H)_ X(U)_ 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

Q_  :  Depth of cut for each cutting feed

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:-

       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 Q5000 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

Notes:-

                   If the depth of cut for each cutting feed (Q) is not commanded, normal drilling is performed.(see the description of the drilling cycle.)

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Front Drilling Cycle (G83) / Side Drilling Cycle (G87)

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.)

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