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G184 Non vertical rigid tapping CW / Reverse tapping cycle, left hand threads
Haas NGC G-code · Mill, Lathe
On mills: Non vertical rigid tapping CW
A rigid tap move along an axis other than Z, such as tapping along X with an angle head. CW spindle direction for right hand threads.
Format
Addresses
| Address | What it does |
|---|---|
F | Feed rate, RPM times pitch |
X Y Z | Hole bottom position |
S | Spindle speed |
How it works
Non-modal, group 00. Each line taps one hole.
Example program
G184 X-.5 F25. S500 (TAP ALONG X, 500 RPM TIMES .05 PITCH)
G00 X-2. (BACK AWAY)
Example is in inch. Check offsets and clearances first.
Watch out for
- Position at the hole start first. Check the angle head ratio and direction before tapping.
On lathes: Reverse tapping cycle, left hand threads
Rigid taps a left hand thread on center with the main spindle. The control starts the spindle in reverse by itself.
Format
Addresses
| Address | What it does |
|---|---|
Z | Hole bottom |
R | R plane |
F | Feed, equal to the lead in G99 |
X | X position, normally 0 |
W | Incremental Z depth |
Q | Peck depth, optional |
How it works
Modal, group 09. Cancel with G80.
Example program
G99 (FEED PER REV)
G00 G54 X0 Z.25 M08 (CENTERLINE)
G97 S300 (TAP RPM)
…
The full 6-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Use a left hand tap. A right hand tap will be ruined.
- Command S before G184. No M04 needed.
Related codes
G184 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Okuma OSP | Live tool tapping cycle |
| Centroid CNC12 Acorn | Compound tapping cycle |
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