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John?
Looking forward to posts on your ELS project..?
Thanks
Prasad
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Prasad, I am in the midst of implementing a similar ELS project to John's, with his help and suggestions.? I prefer to think of it as "super-ELS", as the original ELS concept controlled only the lead screw, as I understand it, so that the user could thread basically any pitch.? Super-ELS, as John and Richard (in the UK) have implemented it, (based on the software concept of a Russian gentleman whose name I don't know), also controls the cross-slide.? This allows complete automated threading, and also provides taper cutting, various turning options, etc.? I went with some rather over-sized motors, as you can see in the photos.? The encoder shown is driven off the spindle directly. I am really looking forward to finishing this and putting it to work!     -- Regards, Charlie New Jersey, USA
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Charlie Well done A very nice forum post with clear photos.
Thanks
John
Prasad,
I am in the midst of implementing a similar ELS project to John's, with his help and suggestions.? I prefer to think of it as "super-ELS", as the original ELS concept controlled only the lead screw, as I understand it, so that the user could thread basically any pitch.? Super-ELS, as John and Richard (in the UK) have implemented it, (based on the software concept of a Russian gentleman whose name I don't know), also controls the cross-slide.? This allows complete automated threading, and also provides taper cutting, various turning options, etc.? I went with some rather over-sized motors, as you can see in the photos.? The encoder shown is driven off the spindle directly.
I am really looking forward to finishing this and putting it to work!
  
--
Regards,
Charlie
New Jersey, USA
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Hi Charlie
I know and I am planning to visit you one of these days. I am excited to get going but as you know, too many open projects on hand. Everything is important. I will phone you soon.?
Prasad
On Friday, August 9, 2019, 03:14:32 PM EDT, CLevinski <clevinski@...> wrote:
Prasad, I am in the midst of implementing a similar ELS project to John's, with his help and suggestions.? I prefer to think of it as "super-ELS", as the original ELS concept controlled only the lead screw, as I understand it, so that the user could thread basically any pitch.? Super-ELS, as John and Richard (in the UK) have implemented it, (based on the software concept of a Russian gentleman whose name I don't know), also controls the cross-slide.? This allows complete automated threading, and also provides taper cutting, various turning options, etc.? I went with some rather over-sized motors, as you can see in the photos.? The encoder shown is driven off the spindle directly. I am really looking forward to finishing this and putting it to work!     -- Regards, Charlie New Jersey, USA
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I want to do this, I wonder about the motors, yes Charlie your motors appear to be huge. How big of a motor is needed for Z and X? Anyone have some extra motors you want to get rid of?
I believe the original ELS has the capability to drive X or it can be added.
Ralph
Charlie Well done A very nice forum post with clear photos.
Thanks
John
Prasad,
I am in the midst of implementing a similar ELS project to John's, with his help and suggestions.? I prefer to think of it as "super-ELS", as the original ELS concept controlled only the lead screw, as I understand it, so that the user could thread basically any pitch.? Super-ELS, as John and Richard (in the UK) have implemented it, (based on the software concept of a Russian gentleman whose name I don't know), also controls the cross-slide.? This allows complete automated threading, and also provides taper cutting, various turning options, etc.? I went with some rather over-sized motors, as you can see in the photos.? The encoder shown is driven off the spindle directly.
I am really looking forward to finishing this and putting it to work!
  
--
Regards,
Charlie
New Jersey, USA
--
Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer
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Hi, Ralph,
I was not aware of that.? I thought the cross-slide was not considered.? My apologies if I am wrong....
--
Regards,
Charlie
New Jersey, USA
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Prasad,
You are always welcome to visit!??
--
Regards,
Charlie
New Jersey, USA
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Ralph,
My motors are NEMA 23, 113 mm long, with a 2-phase holding torque of 3.0 N-m.? It was certainly overkill for the cross-slide, and may be excessive for the lead screw, but I have this philosophy... I would rather have extra torque and not need it than not have enough torque and wish I had speced a bigger motor!? I bought three of these on sale, intending to use the third one for a power feed on my mill.? I have attached the spec sheet FYI.
John, I know your motors are NEMA 23 but not as long.? Do you know the torque spec for Ralph?? You have never had a torque issue that I know of, and you push your lathe to the edge of its performance envelope...
--
Regards,
Charlie
New Jersey, USA
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Charlie I cannot believe those are NEMA 23 motors I thought they had to be NEMA 34.
I have a bunch of NEMA 23 motors maybe I could/should play around with them.
Of course that would be this winter, right now I have too many "priority" must do projects none being in my shop.
Ralph
Ralph,
My motors are NEMA 23, 113 mm long, with a 2-phase holding torque of 3.0 N-m.? It was certainly overkill for the cross-slide, and may be excessive for the lead screw, but I have this philosophy... I would rather have extra torque and not need it than not have enough torque and wish I had speced a bigger motor!? I bought three of these on sale, intending to use the third one for a power feed on my mill.? I have attached the spec sheet FYI.
John, I know your motors are NEMA 23 but not as long.? Do you know the torque spec for Ralph?? You have never had a torque issue that I know of, and you push your lathe to the edge of its performance envelope...
--
Regards,
Charlie
New Jersey, USA
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Clausing 8520, Craftsman 12x36 Lathe, 4x12 mini lathe, 14" Delta drill press, 40 watt laser, Consew brushless DC motors and a non working 3D printer
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But, but, but Charlie, you're modifying the lathe! Are we allowed to do that?
I've always adhered to the maxim that if I own it I can modify it however I want. Hardware, software, whatever!
And if I'm not allowed to modify it, it's just a rental.
I don't rent much. :)
Go for it!
Bill in OKC
On Friday, August 9, 2019, 2:14:29 PM CDT, CLevinski <clevinski@...> wrote:
Prasad, I am in the midst of implementing a similar ELS project to John's, with his help and suggestions.? I prefer to think of it as "super-ELS", as the original ELS concept controlled only the lead screw, as I understand it, so that the user could thread basically any pitch.? Super-ELS, as John and Richard (in the UK) have implemented it, (based on the software concept of a Russian gentleman whose name I don't know), also controls the cross-slide.? This allows complete automated threading, and also provides taper cutting, various turning options, etc.? I went with some rather over-sized motors, as you can see in the photos.? The encoder shown is driven off the spindle directly. I am really looking forward to finishing this and putting it to work!     -- Regards, Charlie New Jersey, USA
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On Fri, Aug 9, 2019 at 12:14 PM, CLevinski wrote:
based on the software concept of a Russian gentleman whose name I don't know
Oleg, I think... Is this it??
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Not that I don't like elephants, but maybe a different group
photo would be in order???? With Charlie's permission, I would
like to submit his third photo as an interim image.
---Mark
toggle quoted message
Show quoted text
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Regards,
Charlie
New Jersey, USA
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Total newbie here . What would be a rough estimate of the cost of setting something like this up ? I realize there are many variables to consider . Are we talking hundreds or thousands of dollars for a basic working set up ? Just trying to see if this is even feasible for me. Thank you. W@yne
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Hi, Bill,
I feel the same way, though it took me quite a while to convince myself that I wouldn't screw up the lathe with my limited machining expertise.? John was a big help to me, both in machining advice and building my machining confidence, which is why I am so happy that he started this group so he can help others!
I have already made a number of mods to the lathe, but this is the most extensive.? It seems, like everything I do, to be taking forever... I had hoped to be finished in April.
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Regards,
Charlie
New Jersey, USA
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Hi, Mark,
It's ok with me, but John has some more impressive photos from his shop that might be better.? I especially like the one of him turning a 7 1/8" diameter wheel for his Minnie tractor.? Now THAT is using all the available swing!
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Regards,
Charlie
New Jersey, USA
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Thanks, Eddie... I *think* so...
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Regards,
Charlie
New Jersey, USA
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Charlie
Thanks Would you give w@yne a mass or minus cost to convert to ELS. Guessing he is your side of the pond, naturally prices vary where ever you live and what quality of parts you buy.
Cheers and later
John
Hi, Bill,
I feel the same way, though it took me quite a while to convince myself that I wouldn't screw up the lathe with my limited machining expertise.? John was a big help to me, both in machining advice and building my machining confidence, which is why I am so happy that he started this group so he can help others!
I have already made a number of mods to the lathe, but this is the most extensive.? It seems, like everything I do, to be taking forever... I had hoped to be finished in April.
--
Regards,
Charlie
New Jersey, USA
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W@yne,That is an excellent question! But I am afraid if I add it all up, I will pass out. I will *guess* that it would be between US$400 and $800 total, depending on how much recycled materials and equipment you can use.? I think the most expensive items are the motors, encoder, Arduino board, power supply, and motor drivers.? There are a lot of smaller items, too. I ordered a number of these from Banggood in China (did anyone in China run the name by English-speakers before adopting it???) for very reasonable prices but long 3-4 week deliveries. -- Regards, Charlie New Jersey, USA
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Charlie ,?
Thank you so much for your answer ! That¡¯s exactly what I was looking for . I feel I can now watch and learn with an idea of the cost involved . ?W@yne
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John Lindo
Bill in OKC too