Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 839)

Using Transfer Line Cycles
Chapter 31
31-37
Template 8: Left-Hand Solid Tapping Cycle
Letter Paramacro Label Description
G 500 G90/91 G-codes G90 or G91 for absolute or incremental modes. At this time only absolute
mode, G90, is available.
X,Y 501, 502 HOLE POSITION X, Y The location the tool moves to before it begins a tapping operation.
X 503 DEPTH TO TAP The location where the tool completes the tap into the part.
R 504 CLEAR POSITION The location that the tool retracts to after an operation. It is completely free of the part.
This also known as the R plane.
X,Y 505, 506 RETURN POSITION X, Y The location where the controls starts and stops a cycle.
S 507 SPINDLE SPEED The speed of the spindle. Measured in revolutions per minute.
F 508 TAP LEAD The thread lead along the drilling axis. This value gives the cycles its feedrate.
Interpreted as inches per revolution or millimeters per revolution, depending on if English
or metric mode is active.
X 509 TOOL CHANGE POSITION The location the control moves to so that a tool change may be performed.
Q 510 ORIENT ANGLE The angle the spindle orients to before starting the tap.
D 511 TAP-OUT SPEED The speed of the spindle as the tap returns to the R plane.
Required entry Optional entry
Figure 31.11
G74.1: Left-Hand Solid-Tapping Cycle
R
Spindle rotation direction is
reversed at hole bottom
1
2
3
4 5
6
Cutting feedrate
Maximum cutting feedrate
Depth of Hole
Clear Position
Return
Position
Hole Position
7