Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set User Manual
Page 663
Milling Fixed Cycles
Chapter 26
26-31
In the G86 milling fixed cycle, the control moves the axis in the following
manner:
1.
The tool rapids to the initial point level above the hole location.
2.
The cutting tool then rapids to the R point level, slows to the
programmed cutting feedrate and begins the boring operation.
3.
The cutting tool bores at the programmed feedrate until it reaches the
depth of the hole as programmed with the Z--word.
4.
If the user has entered a value for the P parameter, the cutting tool
will dwell after it reaches the bottom of the hole.
5.
The spindle stops rotating.
6.
The boring tool is then retracted at a rapid feedrate to the initial point
level, as determined by G98. Spindle rotation continues forward.
When the single block function is active, the control stops axis motion
after steps 1, 2 and 6.