Re: About to embark on an Allin1DC retrofit on Wells Index 847
Posted: Mon Apr 19, 2021 7:46 pm
Items in another box. Axis drives?
https://www.centroidcncforum.com/
Thanks for the info polaraligned! A lot of what you said went right over my head, but I'm betting that it will all be understood by the time this journey is over. Yes, it has a manual brake, not sure why, the mag brake worked fine, noisy as it was.polaraligned wrote: ↑Mon Apr 19, 2021 7:13 pm
That brake has no provision to be manually operated? The lever on the left side of the head looks a lot like the brake lever on Bridgeport heads.
I contacted them shortly after I bought the machine, they couldn't help. I actually tracked down the guy who invented the Sharnoa controller and he laughed at me when I explained what I was looking for. He hadn't touched any of this in 20 years and that was nearly 15 years ago LOLpolaraligned wrote: ↑Mon Apr 19, 2021 7:49 pm Yeah, those are your drives. The bottom picture looks like it might be your servo supply. Wells Index is still in business and might be able to supply you with the original schematics.
Thank you for the info Tom!tblough wrote: ↑Mon Apr 19, 2021 8:20 am Centroid sells encoder cable by the foot. My personal preference is PUR insulated industrial continuous twist/flex rated CAT5/6 Ethernet cable. Usually 24 or 26 gauge, it's twisted pair and the better cables have each pair individually shielded.
Lapp Kabel Etherline 2170489
Igus Chainflex CF898.045
Leoni Fieldlink 20963
I assume the the mag brake is on when you have no spindle power? If that is the case you could make the mag brake work by using a small VFD to provide 3 phase to it. You would need to use relays to power the brake to release it when the the Allinone puts out a FWD or REV command, that would release the brake and allow the spindle VFD to ramp up to speed. Easy to do. I don't know what tool holding system you have on this, but on my QC30 machines I need to use the brake to allow me to tighten the spindle nut when inserting a toolholder.Chevy427z wrote: ↑Mon Apr 19, 2021 7:54 pmThanks for the info polaraligned! A lot of what you said went right over my head, but I'm betting that it will all be understood by the time this journey is over. Yes, it has a manual brake, not sure why, the mag brake worked fine, noisy as it was.polaraligned wrote: ↑Mon Apr 19, 2021 7:13 pm
That brake has no provision to be manually operated? The lever on the left side of the head looks a lot like the brake lever on Bridgeport heads.
Mark
I appreciate the input! It makes sense when you explain it, but this is going to need some further explanation when I get to that step. Such as choosing and wiring the VFD and associated relays.polaraligned wrote: ↑Mon Apr 19, 2021 10:05 pm
I assume the the mag brake is on when you have no spindle power? If that is the case you could make the mag brake work by using a small VFD to provide 3 phase to it. You would need to use relays to power the brake to release it when the the Allinone puts out a FWD or REV command, that would release the brake and allow the spindle VFD to ramp up to speed. Easy to do. I don't know what tool holding system you have on this, but on my QC30 machines I need to use the brake to allow me to tighten the spindle nut when inserting a toolholder.