rigid tapping g33.1 isnt working spindle isnt sync

fabworx wrote:

so what I have here with my gear change function in the hal wont work with rigid tapping?

It probably will, actually. You definitely need a spindle-relative index for multi-pass threading. You will not be able to peck-tap unless you have an index on the spindle.
But for a single-pass rigid tap (and if you don't care about the screw slots lining up[1]) then index on the motor is probably OK.

If it wasn't clear, when I said "gearchange in the middle" I was suggesting that it was a bad idea to expect to change the spindle gear half-way through the tapping cycle.

[1] My grandfather was a steam-engine fitter back in the 20s. They used to deepen counterbores and face off screws so that all the slotted screw-heads in the base plate were in a perfect line. I suppose it made it obvious if any had worked loose.

fabworx wrote:

I get an error "spindle not moving". how is it guys are getting the "electronic gearing" synchronized motion by hand, just spinning the spindle by hand?

I think that the software checks that the spindle is on, rather than if it is actually turning. So if you put the spindle in neutral or turn off the VFD you will get the behaviour that I suspect you have seen on YouTube.
(If you are talking about the lathe threading video then I think he simply has the clutch disengaged(

fabworx wrote:

well I still have a problem cause its not working.

Do you see index-enable set and reset?

Encoder troubleshooting info:

gnipsel.com/linuxcnc/tuning/encoder.html

JT