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G84.3 Rigid tap left hand (ISNC)
Hurco WinMax (NC) G-code · Mill
ISNC rigid tapping cycle for left hand threads.
Format
G84.3 X Y Z R [Q] F [P] [K or L]
Addresses
| Address | What it does |
|---|---|
X Y | Hole position |
Z | Hole bottom |
R | R plane |
Q | Peck depth |
F | Feed, RPM divided by threads per inch |
How it works
Modal, group 09. Cancel with G80.
Example program
T6 M06 (.250-20 LH TAP)
G90 G54 G00 X1. Y1. S500 M04 (HOLE)
G43 H06 Z1. M08 (LENGTH OFFSET)
G99 G84.3 Z-.5 R.2 F25. (LEFT HAND RIGID TAP)
…
G90 G54 G00 X1. Y1. S500 M04 (HOLE)
G43 H06 Z1. M08 (LENGTH OFFSET)
G99 G84.3 Z-.5 R.2 F25. (LEFT HAND RIGID TAP)
…
The full 5-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Mark left hand taps clearly in the tool list. A right hand tap in G84.3 breaks.
Related codes
G84.3 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Left hand rigid tapping, FS15 format |
| Mach3 Mach4 | Rigid tapping left hand, Mach4 |
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Open G84.3 in the app All Hurco WinMax G-codes