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G63 Tapping with compensating chuck
Siemens 840D 828D G-code · Mill and lathe
Feeds the tap with the override fixed at 100 percent. Used with a floating tap holder when the spindle is not in position control. Feed equals rpm times pitch.
Format
G63 Z F
Addresses
| Address | What it does |
|---|---|
Z | Tapping depth or retract position |
F | Feed in mm per min, spindle speed times pitch |
How it works
Non modal. The previous motion command is active again in the next block.
Example program
S400 M3 ; TAP SPEED
G0 X20 Y20 Z5 ; ABOVE HOLE
G63 Z-20 F600 ; 400 RPM TIMES 1.5 PITCH
G63 Z5 M4 ; REVERSE AND PULL OUT
…
G0 X20 Y20 Z5 ; ABOVE HOLE
G63 Z-20 F600 ; 400 RPM TIMES 1.5 PITCH
G63 Z5 M4 ; REVERSE AND PULL OUT
…
The full 5-line example is in the app. Example is in inch. Check offsets and clearances first.
Watch out for
- Reverse the spindle with M4 and use G63 again for the way out.
- The holder must float enough to take up the stop and reverse at the bottom.
Related codes
G63 on other controls
The same number can mean something different on another control.
| Control | Meaning |
|---|---|
| Fanuc | Tapping mode |
| Mitsubishi M70 M80 | Tapping mode |
| Brother Speedio | Tapping mode |
| Fagor 8055 8065 | Multiple machining in a circular pattern |
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Open G63 in the app All Siemens 840D 828D G-codes