The Gcode G82 Drilling cycle is work same as drilling cycle G81
but with dwell. Dwell is used for the some of the improve accuracy of the hole.
During drilling with dwell the tool pauses at the hole bottom. These cycle is
used for center drilling, spot drilling, spot facing, countersinking etc.
Code line for G82 Drilling cycle:
N100 G98 (G99) G82 X… Y… R… Z… P… F…
Diagram for G82 Drilling cycle with Dwell:
Steps for the G82 drilling cycle:
1.
Rapid motion to XY position of the hole
position.
2.
Rapid motion to the R level, i.e., to the top of
the hole position.
3.
Feedrate motion to the depth of the hole in Z.
4.
Dwell at the bottom of the hole. In milliseconds
(P).
5.
Rapid retract to the initial level (with G98) or
Rapid retract to R level (with G99).