*E - Chip-clean RPM (Spindle reverses to remove chips after each
cycle)
F - Feedrate
*I - Size of first peck depth
*J - Amount to reduce peck depth each pass
*K - Minimum depth of peck
*L - Number of holes if G91 (Incremental Mode) is
used, also G81 through G89.
*P - Pause at end of last peck, in seconds (Dwell)
*Q - Peck depth, always incremental
*R - Position of the R plane (position above the part)
*X - X-Axis location of hole
*Y - Y-Axis location of hole
*Z - Position of the Z-Axis at the bottom of hole
* indicates optional
If I, J, and K are specified, the
first pass will cut in by the amount of I, each succeeding cut will be reduced by
amount J, and the minimum cutting depth is K. Do not use a
Q value when programming with I,
J, and K.
If P is specified, the tool will pause at the bottom of the hole for
that amount of time. The following example will peck several times and dwell for 1.5
seconds:
G83 Z-0.62 F15. R0.1 Q0.175 P1.5 ;
The same dwell time will apply to all subsequent blocks that do not specify a dwell
time.
G83 Peck Drilling with I,
J, K and Normal Peck Drilling: [#22]
Setting 22.
Setting 52 changes the way G83 works when it returns to the R plane.
Usually the R plane is set well above the cut to ensure that the peck motion allows
the chips to get out of the hole. This wastes time as the drill starts by drilling
empty space. If Setting 52 is set to the distance required to clear chips, you can
set the R plane much closer to the part. When the chip-clearing move to R occurs,
Setting 52 determines the Z-Axis distance above R.
G83 peck Drilling Canned Cycle with Setting 52 [#52]
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O60831 (G83 PECK DRILLING CANNED CYCLE) ;
(G54 X0 Y0 is at the top-left of part) ;
(Z0 is on top of the part) ;
(T1 is a 0.3125 in. stub drill) ;
(BEGIN PREPARATION BLOCKS) ;
T1 M06 (Select tool 1) ;
G00 G90 G40 G49 G54 (Safe startup) ;
G00 G54 X2. Y-2. (Rapid to 1st position) ;
S1000 M03 (Spindle on CW) ;
G43 H01 Z0.1 (Activate tool offset 1) ;
M08 (Coolant on) ;
(BEGIN CUTTING BLOCKS) ;
G83 Z-0.720 Q0.175 R0.1 F15.(Begin G83) ;
(Drill 1st hole at current X Y location) ;
X2. Y-4. (2nd hole) ;
X4. Y-4. (3rd hole) ;
X4. Y-2. (4th hole) ;
(BEGIN COMPLETION BLOCKS) ;
G00 Z1. M09 (Rapid retract, Coolant off) ;
G53 G49 Z0 M05 (Z home, Spindle off) ;
G53 Y0 (Y home) ;
M30 (End program) ;
%
*C - C-Axis absolute motion command (optional)
F - Feed Rate in inches (mm) per minute
*I - Size of first cutting depth
*J - Amount to reduce cutting depth each pass
*K - Minimum depth of cut
*L - Number of repeats
*P - The dwell time at the bottom of the hole
*Q - The cut-in value, always incremental
*R - Position of the R plane
*W - Z-axis incremental distance
*X - X-axis motion command
*Y - Y-axis motion command
Z - Position of bottom of hole
* indicates optional
G83 Peck Drilling Canned Cycle: [1] Rapid,
[2] Feed, [3] Start or end of stroke, [4] Dwell,
[#22] Setting 22, [#52] Setting 52.
note: If I, J, and K are
specified, a different operating mode is selected. The first pass will cut in the
value of I, each succeeding cut will be reduced by amount
J, and the minimum cutting depth is K. Do not
use a Q value when programming with
I,J, and K.
Setting 52 changes the way G83 works when it returns to the
R plane. Usually the R plane is set well
outside the cut to insure that the chip clearing motion allows the chips to clear
the hole. However, this is wasted motion when first drilling through this empty
space. If Setting 52 is set to the distance required to clear chips, the
R plane can be put much closer to the part being drilled. When
the clear move to R occurs, the Z will be moved
past R by this value in Setting 52. Setting 22 is the amount to
feed in Z to get back to the same point at which the
retraction occurred.
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o60831 (G83 NORMAL PECK DRILLING) ;
(G54 X0 is at the center of rotation) ;
(Z0 is on the face of the part) ;
(T1 is a drill) ;
(BEGIN PREPARATION BLOCKS) ;
T101 (Select tool and offset 1) ;
G00 G18 G20 G40 G80 G99 (Safe startup) ;
G50 S1000 (Limit spindle to 1000 RPM) ;
G97 S500 M03 (CSS off, spindle on CW) ;
G00 G54 X0 Z0.25 (Rapid to 1st position) ;
M08 (Coolant on) ;
(BEGIN CUTTING BLOCKS) ;
G83 Z-1.5 F0.005 Q0.25 R0.1 (Begin G83)
(BEGIN COMPLETION BLOCKS)
G00 G53 X0 M09 (X home, coolant off) ;
G53 Z0 M05 (Z home, spindle off) ;
M30 ;
%
%
(LIVE PECK DRILL - AXIAL) ;
T1111 ;
G98 ;
M154 (Engage C-Axis) ;
G00 G54 X6. C0. Y0. Z1. ;
G00 X1.5 Z0.25 ;
G97 P1500 M133 ;
M08 ;
G83 G98 C45. Z-0.8627 F10. Q0.125 ;
C135. ;
C225. ;
C315. ;
G00 G80 Z0.25 ;
M155 ;
M135 ;
M09 ;
G28 H0. (Unwind C-Axis) ;
G00 G54 X6. Y0. Z1. ;
G18 ;
G99 ;
M01 ;
M30 ;
%
