-Shenzhen Guanhong Automation Co.,Ltd.-
SZGH-CNC1000MDb Series
- 77 -
3.28.6 Drilling Cycle Counter Boring Cycle (G82)
This cycle is used for normal drilling.Cutting feed is performed to the bottom of the hole. At
the bottom, a dwell is performed, then the tool is retracted in rapid traverse. This cycle is used to
drill holes more accurately with respect to depth.
Format: G82 X_ Y_ Z_ R_ P_ F_ L_ ;
X_ Y_ : Hole position data
Z_ :
The distance from R point to bottom of the hole
R_ :
The distance from initial level to point R level
P_ :
Dwell time at the bottom of a hole. Unit: s.
F_ :
Cutting feed rate
L_ :
Number of repeats (if required)
G82(G98)
G82(G99)
After positioning along the X and Y axis, rapid traverse is performed to point R. Then drilling
is performed from point R to point Z, When the bottom of the hole has been reached, a dwell is
performed. Then the tool is retracted in rapid traverse.
Before specifying G82, use miscellaneous function (M code) to rotate the spindle. When the G82
command and an M code are specified in the same block, the M code is executed at the time of the
first positioning operation. The system then proceeds to the next drilling operation.
When a tool length offset (G43, G44 or G49) is specified in the canned cycle, the offset is
applied at the time of position to point R. In the canned cycle mode, tool offsets are ignored.
Example
: M3 S2000 ;
Cause the spindle to start rotating
G90 G99 G82 X300. Y-250. Z-150. R-100. P1 F120. ;
Position, drill hole 1, and dwell for 1s at the bottom of the hole, then return to point R.
Y-550. ;
Position, drill hole 2, then return to point R.
G98 Y-750. ;
Position, drilling hole 3, then return to initial level.
G0 X0 Y0 Z0 ; Return to the zero point.
M05 ;
Cause the spindle to stop rotating.
