Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 664)

Drilling Cycles
Chapter 26
26-38
The system installer determines many parameter for the drilling cycles in
AMP. For details on these cycles, see page 26-4 or chapters 22 -- 25.
These 3 parameters may also be changed by the operator by using the
Drilling Cycle Parameter screen:
G83.1 Deep Hole Peck Drilling Cycle retract amount - This parameter
determines the value of “d.” “d” for this cycle is the distance above the
last infeed step that the control retracts the tool from the part (normally
to clear chips). See the section on G83.1 Deep Hole Drilling cycle for
details on this cycles operation.
G83 Deep Hole Drilling Cycle clearance amount - This parameter
determines the value of “d.” “d” for this cycle is the distance above the
last infeed step that the feedrate is slowed at to cutting feedrate when
infeeding during this cycle. See the section on G83 Deep Hole Drilling
for details on this cycles operation.
G21 / G78 Threading Cycle
Pullout Distance - This parameter determines the value of “r.” “r”
determines the pullout distance when a thread chamfer or thread retract
operation is performed. This distance is in units of threads. Enter the
number of threads to be chamfered when exiting the thread. This
feature is enabled for threading in PAL or in AMP.
Pullout Angle - This parameter determines the value of “a.” “a”
determines the angle that the chamfer takes when it is performed. This
angle is measure in units of degrees and measured from the same axis as
the thread lead.
To alter these 3 parameters, follow these steps:
1. Press the {SYSTEM SUPORT} softkey.
(softkey level 1)
PRGRAM
MANAGE
FRONT
PANEL
MACRO
PARAM
PRGRAM
CHECK
SYSTEM
SUPORT
OFFSET ERROR
MESAGE
PASS-
WORD
SWITCH
LANG
26.5
Altering Drilling Cycle
Parameters