Is this GUI a product, a 'freeware' project, or something he wrote himself? Curious, that's all...
not sure how feasible this is, but incorporating an adjustable proximity sensor (think bed mounted stop) and some way of doing a quick retract of the threading tool would allow you to program a stop feed + stop spindle -> retract -> rapid carriage reverse to start (2nd proximity stop) -> reverse retract (whatever word that would be).
The retract/ re-engage threading tool could be based along the lines of those quick retract threading tool holders + a small stepper motor.
Just spitballing, no idea how I would do that, but it would allow easy threading to a shoulder and ease the hassle of keeping the half nuts engaged for metric threading.
It's just an Arduino microcontroller that takes orders from a Raspberry Pi computer driving a nice quality 7" touchscreen. There's no magic, it's about $100 in cheap hardware stuffed inside a hunk of anodized aluminum. It's about the same size as a Kindle so it would basically mount to the machine near the threading chart.
This is really not complex to make it work. It's a damn microcontroller running dirt simple code.
In a word? Yes.
Single-point threading on large lathes has been done away from the headstock more often than not, last 100 odd years.
Ever since they GOT "reverse". And speeds above that of African Land Snails.
At even their ponderous RPM, they just don't stop - nor anything ELSE - as smartly as small lathes with light work.
Too much at-risk trying to finesse around that.
So we did not.
Nothing to do with whether the LS is geared or electrified, no.Gee, I dunno, when threading on the American I ran, and several other nice pieces of American Iron, I simply kept the spindle running, dropped the half nuts, spun back the cross slide, and cranked the cross slide back to the start.
Nothign to do wothwhehter theLS is geared or electified.
If you don't have to go tight to a hard shoulder, similar"feature", or thread a blind-bottom bore? That's OK.
If you DO have a blind bore or hard feature? You thread AWAY from it.
Missed that at training? Pittsburgh's IA schools were still teaching it to kids. But I'm OLDER that your generation.
Joe "Py" is not the ONLY one with a video on it for those playing catch-up. There are several folk "re-discovering" what EVERY pro turner used to know.
Go figure how TF it ever got forgotten about, it's that easy?
Threading to/from the chuck is NOT the answer.
Answer pulleaze ?.....
In a normal gear system you have a dial that you reengage the nut to.
This locks you into the same tooth and if your engage timing off a small amount the slide stills pulls forward or waits a tad to put you on the same path.
It automatically compensates and does the chase or lag needed.
In an electronic geared system you need to sync the drive back to the same spindle index/ slide position for pass number two.
Due to a bunch of issues this is not easy.
My first Galil controlled threading machine was a VMC. Rigid tap easy. The spindle stopped, turn on the axis gearing, start and reverse spindle. Tap moves in and out.
This the same as the above reverse the spindle but a note here is any lash in the drive/screw system a problem on that backwards move.
Then came my first lathe needing the gearing unlocked, return the slide and lock it back in just right for pass 2....
On paper or in a perfect world with no signal delays, processing loop times and update rates it seems so easy and for sure if you want to thread at 50rpm or less like a thread grinder that is much easier.