Tormach PCNC 770 - G83 Cycle; G85 Cycle - Boring Cycle (Feed Rate Out)

Chapter 7
121
UM10350_PCNC770_Manual_0916A
Programming
7.6.2.4 G83 Cycle
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 Denition
Q~
This cycle takes a Q number which represents a delta increment along the Z-axis
Step # Description
1 Preliminary canned cycle motion
2
Move the Z-axis only at the current feed rate downward by delta or to the Z position, whichever
is less deep
3 Rapid back out to the clear Z
4 Repeat steps 1, 2 and 3 until the Z position is reached at step 1
5 Rapid back down to the current hole bottom, backed off 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
7.6.2.5 G85 Cycle – Boring Cycle (Feed rate out)
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 motion
2 Move the Z-axis only at the current feed rate to the Z position
3 Retract the Z-axis at the current feed rate to clear Z