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G84.3 Left hand rigid tapping, FS15 format
Fanuc G-code · Mill
Left hand rigid tapping in the FS15 command format. The spindle turns counterclockwise going in and reverses to come out.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
G84.3 X Y Z R [P] F [S] [L]
Addresses
| Address | What it does |
|---|---|
X Y | Hole position |
Z | Hole bottom |
R | R plane where feed starts |
P | Dwell at bottom, milliseconds |
F | Feed rate, RPM times pitch |
S | Spindle speed |
L | Number of repeats |
How it works
Modal, group 09. Cancel with G80 or any group 01 code.
Example program
T6 M06 (.250-20 LH TAP)
G90 G54 G00 X1. Y1. S400 M04 (FIRST HOLE)
G43 H06 Z1. M08 (CLEARANCE)
G99 G84.3 Z-.6 R.2 F20. (LH RIGID TAP, FS15 FORMAT)
…
G90 G54 G00 X1. Y1. S400 M04 (FIRST HOLE)
G43 H06 Z1. M08 (CLEARANCE)
G99 G84.3 Z-.6 R.2 F20. (LH RIGID TAP, FS15 FORMAT)
…
The full 5-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Most machines use M29 S with G74 for left hand rigid tapping.
- Use a left hand tap. A right hand tap breaks at once.
Related codes
G84.3 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Mach3 Mach4 | Rigid tapping left hand, Mach4 |
| Hurco WinMax (NC) | Rigid tap left hand (ISNC) |
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