G82 drilling cycle is also called G82 counter boring cycle.
G82 is a normal drilling cycle the only difference is that it dwell for specified time at the bottom of the hole, normally used for accurate depth drilling.
G82 X... Y... Z... R... P... F... K...
|X||Hole position in x-axis.|
|Y||Hole position in y-axis.|
|Z||Depth, tool will travel with feed to Z-depth starting from R plane.|
|R||Position of the R plane.|
|P||Dwell at the bottom of hole.|
|K||Number of cycle repetitions (if required).|
N30 G82 X10 Y30 Z-17 R2 P1000 F75 N40 Y10 N50 X30 N60 Y30 N70 G80
Once G82 drilling cycle is specified with it’s parameters in a program block, this will keep drilling at every axis movement, until cycle is ended with G80
How G82 drilling cycle works
1- Rapid traverse to x, y position
2- Rapid traverse to R-plane position
3- Drilling with feed from R-plane to Z-depth position.
4- Dwell for specified time at hole bottom.
5- Rapid traverse to R-plane or Initial-level depends on G99, G98 mode.
G98 G99 Modes
How G82 drilling cycle behaves upon G98 or G99 mode,
G98 Drill will return to the Initial level
G99 Drill will return to R-plane.
For a working example see G81 drilling cycle.
N30 G82 X10 Y30 Z-17 R2 P2000 F75 N40 Y10 N50 G98 X30 N60 G99 Y30 N70 X90 N80 Y10 N90 G80
If K parameter value is given with G82 drilling cycle, then drilling will repeat the number of times given with K. An effective use of repeat drilling is while drilling multiple same distance holes, this way G82 cycle is used in G91 incremental mode. See G81 drilling cycle for repeat drilling example.
N10 T1 M06 N20 G90 G54 G00 X30 Y25 N30 S1200 M03 N40 G43 H01 Z5 M08 N50 G82 Z-10 R2 P1000 F75 N60 X80 Y50 N70 G80 G00 Z100 M09 N80 M30