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G84.2 Synchronous tapping cycle / Face synchronous tapping, live tool
Mazak (EIA) G-code · Mill, Lathe
On mills: Synchronous tapping cycle
Rigid tapping. The Z feed is locked to the spindle rotation so no floating holder is needed. G84.3 is the left hand version.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
Addresses
| Address | What it does |
|---|---|
X Y | Hole position |
Z | Hole bottom |
R | R plane |
F | Feed, RPM times pitch in G94 |
S | Spindle speed |
How it works
Modal, canned cycle group. Cancel with G80.
Example program
G90 G54 G00 X1. Y1. (HOLE)
G43 H07 Z1. M08 (LENGTH OFFSET)
G94 G84.2 Z-.75 R.2 F38.46 S500 (SYNC TAP, 500 RPM TIMES .0769)
…
The full 5-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Check whether F is a feed rate or a pitch on your control. It depends on G94 or G95 and on the control.
- Use a solid holder or a tension only holder.
On lathes: Face synchronous tapping, live tool
Rigid tapping on the face with the Z feed locked to the live tool spindle.
Verify on your machine. This entry could not be fully checked against the maker manual. Check your machine manual before you run it.
Format
Addresses
| Address | What it does |
|---|---|
X C | Hole position |
Z | Hole bottom |
R | R plane |
F | Feed or pitch, check your control |
S | Live tool speed |
How it works
Modal, cancel with G80.
Example program
G98 (FEED PER MINUTE)
G00 X1.5 C0. Z.25 (HOLE 1)
G84.2 Z-.4 R.15 F25. S500 (SYNC TAP)
…
The full 5-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Check whether F is pitch or feed per minute on your control before running.
Related codes
G84.2 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Rigid tapping, FS15 format |
| Mach3 Mach4 | Rigid tapping right hand, Mach4 |
| Hurco WinMax (NC) | Rigid tap right hand (ISNC) |
| Fadal | Prepare for right hand rigid tap |
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Open G84.2 in the app All Mazak G-codes