Rockwell Automation 8520 9/Series CNC Lathe User Manual

Page 647

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Drilling Cycles

Chapter 26

26-21

on a dual-process lathe, both processes can be in solid-tapping mode at
the same time assuming that they have separate controlling spindles

you must disable CSS before performing solid tapping; an attempt to
execute the tap phase of a solid-tapping cycle with CSS results in a

decode error

cycle stop and feedrate override are acknowledged throughout the cycle,
but can be disabled by G63

you can use active reset to abort the cycle after the cycle stop request
has been acknowledged

to retap a hole, a Q-word must have been programmed when the hole
was originally tapped

block retrace is possible during the tap-in portion of the cycle, but not
during the tap-out

Figure 27.L1

G84.2: Right-Hand Solid-Tapping Cycle

R point level

Tapping move

Rapid move

1

Initial point level (I)

2

3

44

5

6

R

Z

5

G98

G99

6

Spindle or live tool

rotation direction is reversed

at hole bottom

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