Logan Model 200 Servo Threading

I would love to be able to thread on a taper, using an older machine, with your setup... Now that would be epic!

Too bad that Logan taper attachments are so rare, and expensive when they do surface. The way that I set up the digital scale on my cross slide would lend itself to adding a taper attachment if I ever have a need and decide to build one.
 
I currently have both original end pieces and an original cross slide cover for the correct Logan Taper attachment.. Only missing the bar, need the length to make my own and finally need, well not really... Only need the correct length of the bar as with my Bridgeport I can make the rest...
 
I currently have both original end pieces and an original cross slide cover for the correct Logan Taper attachment.. Only missing the bar, need the length to make my own and finally need, well not really... Only need the correct length of the bar as with my Bridgeport I can make the rest...

When I bought my 200 it had the cross slide extension for the taper attachment, but the attachment itself was long-since gone. I gave the extension to someone for the cost of shipping it to him. I had to make a sheet metal cover for the bracket and digital scale that I added and couldn't use it, anyway.
 
When I bought my 200 it had the cross slide extension for the taper attachment, but the attachment itself was long-since gone. I gave the extension to someone for the cost of shipping it to him. I had to make a sheet metal cover for the bracket and digital scale that I added and couldn't use it, anyway.

are you planning on sharing the source code?
 
are you planning on sharing the source code?

I'm waffling, because I can't decide whether I want to turn it into an actual product. Of course, I kinda have to finish it first. Over the weekend I ripped out the jogging routines and completely re-wrote them. Much cleaner code, and a better acceleration profile. It tends to work that way, since on the first (or second) pass you don't really understand the problem. Then I worked on feeding/threading to a shoulder some more. It's going to take another pass or two to get that right. Then I have several other "enhancements" on my list. Software is never done.
 
Just wanted to drop a note to say there’s at least one more stranger on the internet that is highly impressed with your project. I’m an industrial electrician by trade, and have often tried to imagine how this could be done. Unfortunately,I’ll likely never be knowledgeable enough to pull it off. It’s easier to identify a broken one(me) than design and implement(you). Lol I read in a trade magazine that Monarch I think, has put a programmable leadscrew on their newest lathe.

As far as cost of a kit, I’d say you’ll have to come in under 500-600 dollars . Only because that’s the going rate it seems for a QCGB. Your kit though, after complete, looks to add additional,valuable functionality that a person wouldn’t get, even with a QCGB. Anyhow, I’m convinced you’re way ahead of me on that whole thing too, so I’ll stop now. Kudos to you. It’s a great project, and a fine testament to your ability.
 
Electronic taper attachment! Now that would be awesome too, since the mechanical ones are so expensive and rare for some machines
Nice work Jon
Mark
 
Thank you for the kind words. Like I said, I have some "features" to finish. I've been working on this in fits and starts, but I've been pushing the last couple of weeks to finally get it done (for certain values of "done"). I'm probably going to retire next month and get a detached shop built this summer. That will give me some room to do things.

I know that there are Hardinge HLV clones now that have been computerized. I saw something about Monarch buying old 10ee's for the iron and rebuilding and retrofitting them with a modern drive system. In fact, a 10ee just came up locally, and I was going to try to get a look at this afternoon. If I buy it I'll have to rent storage for it until I have the shop built, but it would make a great project.

So, my plan is to finish the last bits of the leadscrew "soon" and do a lot of pictures and a video or two. Threading to a shoulder is really slick, but I'm missing something in the synchronization. I really want to get that working right and put out a video. I think that will impress people more than anything else.
 
Electronic taper attachment! Now that would be awesome too, since the mechanical ones are so expensive and rare for some machines
Nice work Jon
Mark

It would be interesting, but it's outside the scope of what I'm trying to accomplish. My goal is something that will bolt on to a stock Model 200 (and maybe some other QCGB-less lathes further on) and give the functionality of a Monarch 10ee with an ELSR. A full CNC lathe is another animal entirely.
 
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