1997 Bridgeport Romi CNC flat bed lathe Easy Path S
Posted: Mon Dec 27, 2021 8:07 pm
I just finished bringing an old Wells Index CNC Mill with a Sharnoa controller back to life with the AllInOneDC controller with the incredible help from this discussion board. I posted this at the end of that thread to know where exactly to start my new thread. I brought all the initial comments here to keep anyone reading up to date.
I wrote:
Now that this is up and running, I'd like to start considering options to bring a 1997 Bridgeport Romi lathe back to life.
Before I started this adventure, I posed most of my initial questions to sales instead of here. While they were tremendously helpful, I learned that I should have started here. What would be the best forum (AllInOne, Oak, or Acorn) to start a new thread down that rabbit hole? The machine may have axis servo drive and spindle motor drive issues.
Many thanks,
Mark
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Marty wrote:
Mark, it depends. What kind of axis motors will you use? I would imagine that machine has DC brush servos?
How about overall picture of the machine, and detailed pictures of the control cabinet. Knowing what you've got and are working with might get some better suggestions from what route we might go if it were ours.
Seeing pictures of the condition of the machine would help. Likely SEM DC brush servos, if they are in good condition then All in One DC would be my first choice.
Does it have a turret or just a tool post?
No turret, then new AC Servos and Acorn a possibility.
Your budget might dictate your choices.
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Then I added a bunch of pictures that I had on my computer from about a year ago.
--------------------------------------------
Then I wrote:
Four position tool post. Might think about a turret in the future.
Budget, as always, is tight, but not impossible. All in One would thrill me as I actually feel like I have a grip on how that works now. But not averse to using another recommendation.
Mark
Edited: It's actually in pretty good condition. The pictures do not do it justice. The iron is excellent. It seems to be covered in gooey oil residue which will clean up.
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Then Marty wrote
You have AC Servos.
Maybe cncsnw will confirm the drives are compatible with Oak. I'd stick with them
----------------------------------------------------
Then cncsnw wrote
Those are Yaskawa Sigma I drives and motors.
If they were in good working order, then they would be plug and play with an Oak board.
If the servo drives are not running reliably, you might consider new Yaskawa servos in their place. 450W motors and 500W drives are not that expensive, and it is likely that new motors of the same rating (e.g. SGM7G-05A7D6S) would install with no mechanical modifications.
You can probably find a used drive of that model on eBay, if needed.
---------------------------------------------------------
I wrote
Thank you! I'll start doing research in that direction. The X axis drive is questionable. The Z axis is solid. I appreciate your time and input!
Mark
-----------------------------------------------------
And then before I could get a new thread started, Marty wrote:
See if you can figure out what's going on. Even if you had to source another Drive, I think you are ahead keeping the Yaskawa, Drives/Motors and go with Centroid Oak and their cables.
Maybe you can explain what the drive is or isn't doing. What is the history on the machine?
Thanks Marc for chiming in.
I wrote:
Now that this is up and running, I'd like to start considering options to bring a 1997 Bridgeport Romi lathe back to life.
Before I started this adventure, I posed most of my initial questions to sales instead of here. While they were tremendously helpful, I learned that I should have started here. What would be the best forum (AllInOne, Oak, or Acorn) to start a new thread down that rabbit hole? The machine may have axis servo drive and spindle motor drive issues.
Many thanks,
Mark
------------------------------------
Marty wrote:
Mark, it depends. What kind of axis motors will you use? I would imagine that machine has DC brush servos?
How about overall picture of the machine, and detailed pictures of the control cabinet. Knowing what you've got and are working with might get some better suggestions from what route we might go if it were ours.
Seeing pictures of the condition of the machine would help. Likely SEM DC brush servos, if they are in good condition then All in One DC would be my first choice.
Does it have a turret or just a tool post?
No turret, then new AC Servos and Acorn a possibility.
Your budget might dictate your choices.
-------------------------------------------------
Then I added a bunch of pictures that I had on my computer from about a year ago.
--------------------------------------------
Then I wrote:
Four position tool post. Might think about a turret in the future.
Budget, as always, is tight, but not impossible. All in One would thrill me as I actually feel like I have a grip on how that works now. But not averse to using another recommendation.
Mark
Edited: It's actually in pretty good condition. The pictures do not do it justice. The iron is excellent. It seems to be covered in gooey oil residue which will clean up.
----------------------------------------------------
Then Marty wrote
You have AC Servos.
Maybe cncsnw will confirm the drives are compatible with Oak. I'd stick with them
----------------------------------------------------
Then cncsnw wrote
Those are Yaskawa Sigma I drives and motors.
If they were in good working order, then they would be plug and play with an Oak board.
If the servo drives are not running reliably, you might consider new Yaskawa servos in their place. 450W motors and 500W drives are not that expensive, and it is likely that new motors of the same rating (e.g. SGM7G-05A7D6S) would install with no mechanical modifications.
You can probably find a used drive of that model on eBay, if needed.
---------------------------------------------------------
I wrote
Thank you! I'll start doing research in that direction. The X axis drive is questionable. The Z axis is solid. I appreciate your time and input!
Mark
-----------------------------------------------------
And then before I could get a new thread started, Marty wrote:
See if you can figure out what's going on. Even if you had to source another Drive, I think you are ahead keeping the Yaskawa, Drives/Motors and go with Centroid Oak and their cables.
Maybe you can explain what the drive is or isn't doing. What is the history on the machine?
Thanks Marc for chiming in.