3 forward drill time (t1) for g83 – Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set User Manual
Page 540

Fixed Cycles
Chapter 25
25-20
Notes
This is a global parameter; the value set here applies to all axes.
This feature is not available on the 9/230 control and Grinder
configurations.
Function
This parameter is used by mill controls when operating in 7300 mode and
calling G83 deep hole drilling cycle. This parameter is not available for
lathe or grinder controls.
The G83 deep hole drilling cycle performs a series of infeed and retract
steps when drilling. In 7300 mode, the depth of these infeed steps is
determined by the forward drill time (T1) set by this parameter. Each
infeed step takes place at the programmed cutting feedrate. See
Figure 25.2.
Figure 25.2
G83: Deep Hole Drilling Cycle
R plane
T1
T2
Start point
Z plane
T1
T2
T1
T2
T1 or less if Z plane is
reached before T1 is complete.
Important:
The forward drill time (T1) must be greater than the retract time (T2).
Axis
Parameter
Number
All
[88]
Range
0.01000 to 99999.99000 seconds
25.11.3
Forward Drill Time (T1) for
G83
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