Tormach PCNC 440 - 7.4.4 Simple Drilling Cycle (dwell) - G82; 7.4.5 Peck Drilling Cycle - G83; 7.4.6 Boring Cycle (feedrate out) - G85

Chapter 7
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UM10372_PCNC440_Manual_0221A
PROgRAMMiNg
7.4.4 Simple Drilling Cycle (dwell) – G82
The G82 cycle is intended for drilling. Program: G82 X~ Y~ Z~ A~ R~ L~ P~
Step # Description
1 Preliminary canned cycle moon
2 Move the Z-axis only at the current feed rate to the Z posion
3 Dwell for the P number of seconds
4 Retract the Z-axis at traverse rate to clear Z
7.4.5 Peck Drilling Cycle – G83
The G83 cycle (oen called peck drilling) is intended for deep drilling or milling with chip breaking.
See also G73. The retracts in this cycle clear the hole of chips and cut o any long stringers (which
are common when drilling in aluminum). This cycle takes a Q number which represents a delta
increment along the Z-axis. Program: G83 X~ Y~ Z~ A~ R~ L~ Q~
Word Definition
Q~ This cycle takes a Q number which represents a delta increment along the Z-axis
Step # Description
1 Preliminary canned cycle moon
2
Move the Z-axis only at the current feed rate downward by delta or to the Z posion,
whichever is less deep
3 Rapid back out to the clear Z
4 Repeat steps 1, 2 and 3 unl the Z posion is reached at step 1
5 Rapid back down to the current hole boom, backed o a bit
6 Retract the Z-axis at traverse rate to clear Z
It is an error if:
• The Q number is negave or zero
7.4.6 Boring Cycle (feedrate out) – G85
The G85 cycle is intended for boring or reaming, but could be used for drilling or milling. Program:
G85 X~ Y~ Z~ A~ R~ L~
Step # Description
1 Preliminary canned cycle moon
2 Move the Z-axis only at the current feed rate to the Z posion
3 Retract the Z-axis at the current feed rate to clear Z