[mactec54]

Not only a pulse encoder with a marker pulse, the rigid tapping option needs the OEM to have fitted the correct hardware and enabled the option.

Rigid tapping was alway an option, today many machines include it as standard.

Just fitting a spindle encoder may not be enough in your case.

The only hardware required is an encoder, and mounting it, the rest is done in software.

[servtech]

The only hardware required is an encoder, and mounting it, the rest is done in software.

Encoder (with a timing belt and pulleys) the only hardware needed ?

Back to basics....

Spindle gearbox, pulleys, timing belts are hardware are they not?

Spindle and axis drives both need power and accuracy to tap a blind hole to overcome standstill friction, at almost zero revs. Particularly in harder materials, stainless and bronze for example. The spindle needs to stop and reverse while the axis follows the spindle rpm with exactly the correct pitch.

The very reason machines had pull out tap holders was to allow for pitch errors during stop and reversal, usually a 10% pull out length of pitch.

Software wasn't the fix, it was hardware and software for a rigid tapping option.

[mactec54]

Encoder (with a timing belt and pulleys) the only hardware needed ?

Back to basics....

Spindle gearbox, pulleys, timing belts are hardware are they not?

Spindle and axis drives both need power and accuracy to tap a blind hole to overcome standstill friction, at almost zero revs. Particularly in harder materials, stainless and bronze for example. The spindle needs to stop and reverse while the axis follows the spindle rpm with exactly the correct pitch.

The very reason machines had pull out tap holders was to allow for pitch errors during stop and reversal, usually a 10% pull out length of pitch.

Software wasn't the fix, it was hardware and software for a rigid tapping option.

Again No, have you ever built a machine that can do ridgid Taping, it is as I posted and nothing more.

You seem to be out of touch with modern Tech, the photo I posted is just an example of an Encoder and Software this machine has done thousands of Taped holes, with true Rigid Tapping with no compression tap holder needed.