How to go about a lathe CNC conversion with no lathe modifications.
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- čas přidán 2. 09. 2019
- In this video, I show how I went about creating a lathe CNC conversion with a difference.
Instead of modifying the lathe, I built a two-axis CNC table that sits on top of the lathe bed. This technique avoids the usual removal of the z-axis lead screw and the subsequent loss of thread cutting capability. It also avoids the need to machine the underside of the cross slide to accommodate the ball screw and nut.
The CNC controller used is LinuxCNC. - Věda a technologie
Excellent example of looking at something differently. One more benefit of that design is it's easily transferable to another lathe.
This is a great idea! This makes sense as an add-on piece for all the plain-turning bench precision lathes that are floating around in the classified ads, the ones that are typically 100 years old and use bolt-down cross slides that float anywhere along the bed. I don't know why CZcams didn't point me here a lot sooner.
I'm nearing completion of a "Spruce-up" of a Myford Super 7 that my father bought new, over seventy years ago. It has just come home again after twelve years of storage in less than dry conditions. There are a number of CZcams videos that show CNC conversions on machines like mine, but I am reluctant to do too much alteration to this very original lathe, and your solution is really excellent.
Many thanks for making the time and effort to share your ideas. :o)
Excellent idea. I ran across this video while looking for examples of CNC conversions as I prepare to convert my lathe. I enjoy working the lathe by hand for large and simple parts, but I need a CNC component to produce small and accurate parts. You've presented an elegant solution! Thank you!
czcams.com/video/pAftLQ4Ak4w/video.html check this one out too mate, it is an elegant example of an easy CNC conversion
Was thinking about a version of this idea. Super cool to see someone else do it. Thanks for sharing!
Very cool project. I've had similar ideas but didn't know how to go about it. I think this is the first "bolt on" solution I've seen. Thanks for showing.
this is a great solution for a non invasive conversion. Thanks man.,
Thanks so much for sharing! I've recently started designing a similar concept, and finally thought "I bet someone else has had this idea before." Thanks for letting me skip the "wrestling with Fusion 360" stage of the project and get straight to ordering parts!
... I just measured t-slot bed to center height and it seems like my lathe (Sieg SC4) is quite a bit smaller than yours, so it turns out I will have to spend some time fighting Fusion, but at least there's an excellent starting point to refer to!
Great work. We shared this video on our homemade tools forum this week 😎
Great idea and inspiration. I have been in the process of making a CNC table for my Harbor Freight 10" x 18" wood lathe without modifying the lathe.
Thanks! I've recently created a v2 of this in steel. When I get a moment, I'll publish the 3d model.
@@girvawPlease do, thanks for sharing
I am in the process of converting my horizontal mill to cnc, but this idea is next to do for my lathe....brilliant idea..
Thanks !
Excellent three projects. I'm surprised you don't get more subscribers. I think these are more sophisticated projects than you claim, and perhaps people would prefer a rather more detailed account of them than you offer. Anyway, well done!
Thanks for your feedback.
Great idea. You still need covers for bolts and guides, otherwise they will die.
perfect design
Absolutely 💯 amazing 👏 idea 💡 👏 👌 😀 😍 🙌
Great job
This is good idea👍
That is a fantastic solution to get the best of both worlds. I would like to have a cnc lathe for doing the work I would normally have to grind form tools for but I like running my machine manually for the rest of the operations. This is perfect, I hope you don’t mind me copying your idea. I have a similar size lathe as yours so lots of room to fit a small cnc capable attachment. 😬 subbed.
Why didnt i thinknof this before! Awesome, i was about to go out and buy a hardinge chucker to cnc , i alreadg have a south bend 16 and sheldon 13 so flr mh hobby work this is a better solution!
Excellent idea and design, you should sell these as kits 😁
Thanks. It would be possible to produce these, although I doubt that it would be a very profitable venture - the linear guides and carriages aren't particularly cheap. That said, it's been a tremendously useful tool. With careful setup, it can produce parts of excellent quality and precision.
That's excellent! Manual and when you want to CNC a part, just plonk the CNC bed on. Would love a more detailed video on this - what speed pc, BOB etc. I know even with motion controllers, Linux CNC still controls all the movements etc., but still not entirely clear on best interfacing boards for it.
Thanks. The PC requirements for LinuxCNC do not appear to be too critical. Until recently, I used a 15+ years old i686 32 bit machine running Debian Wheezy. It ran fine using the built-in parallel port to drive the steppers. Due to unsupported packages on x32 I recently replaced the motherboard with a 10+ years old i7 x64 board. This board doesn't have a built-in parallel port, so a PCI parallel port was added. This revealed some compability problems. I eventually settled on a NetMos parallel port. Unfortunately the outputs were unable to drive the opto-isolated stepper driver inputs, so I ended up constructing a buffer using 2 x 74HC541 octal buffers. Works fine now on Debian Buster.
I like it 👍
Very clever
thanks
Nice! Now you can machine solid copper bullets :) They are quite expensive!
Just needs a spindle RPM sensor and then it'll be good for threading. 👌
Indeed. That would be a good addition.
Exactly i was bamboozled when he said we can't thread kek
you should make these kits for sale. i would be interested in one. no kidding
How do you manage to make the software communicate or command your hardware? And what about pneumatics
What types of rail guides are used
Excellent job! Have you plans for this available? I wouldnt mind it on one of my lathes 😌
Thanks. I'll publish the 3d model to Grabcad when I have a moment. Will message you when it's up.
@@girvaw That would be great! Thank you very much!
In fact, I had already uploaded the design to Grabcad !
grabcad.com/library/lathe-cnc-table-add-on-1
Good luck if you decide to build one. I've found it to be a very useful tool indeed.
Nice! I'll go give it a try, hopefully it turns out as good as yours . . thanks again William!
THIS IS OUT STANDING.i 82 years old and have been running manual lathes since 1953, I ran the first Mazak cnc lathe in St louis in 1977. Retired useing a Mori seiki cnc with live tooling. NOW I HAVE MY GAREGE SHOP. I have 1340 manual lathe with every imaginable tooling.,,5 chucks 80 plus piece 5 c collett ect, ect. Nothing beats a small enginne lathe for the eveyday jobs.BUT I REALLY REALLY MISS CNC CAPABILITY. I AM INSPIRED TO TRY THIS..Have you thought about adding threading capabilitys?
Hi. Thanks! This has been an extremely useful tool. I did a significant upgrade to it last year, replacing the aluminium plates with 15mm steel plates. It's now extremely rigid and very precise with all linear rail mounting surfaces having been surface-ground. It can already do thread-cutting: See my video on the making of a spindle encoder.
@@girvaw prosze o film z modyfikajcą modułu - płytami stalowymi 15mm
Curious as to how you still like it! And is there any way to add tailstock support? What do you estimate the swing would be if you put it on a 10x lathe? I make a lot of pens and this would be perfect for me... I just really need that tailstock support unfortunately!
This has been a very useful project that I use relatively often. There are a couple of ways to use the tailstock. If your lathe bed is long enough, take the tailstock off and put it on the chuck side of the carriage. You would also want to position the z-axis stepper off to the side to keep it out of the way of the saddle. Another way is to make your own saddle that is fixed to the CNC table. Good luck!
@@girvaw thats great info thank you! do you happen to have a parts list for what you used?
@@guitarchitectural I don't have a formal parts list. When I have a moment, I'll put one together.
Pretty nice project! How much the overall cost ? Regards from Eastern Canada!
C'est effectivement une très bonne alternative, le seul souci c'est que tu peux pas faire de filet. J'imagine que ca dû coûter moins de 750$.
@@laurentc.8742 peut-être pas son système à lui, mais j'ai vu d'autres qui se connecte avec un encodeur sur le mandrin et en mesure de faire les filets
Congratulations, can you please give me the parts list, I share that it is best not to modify the lathe !!!, I like that.
Hi. I'll publish a parts list when I have a moment.
@@girvaw Thanks
@@girvaw parts list would be amazing!
Hey, I would like to buy the project from you for my mini lathe, will you be willing to share it? It's great!
Hi bro! Can u share your 3D project?
A Decent CNC Control is perfecty capable of Threading.. so this entire conversion is pointless
Some people don't want to irreversibly modify their lathes, or want to retain the capability for full manual use, so your entire comment is pointless.
@@trevfindley5704 if you want to retain the capabilty of manual operation, converting to cnc is pointless.. if you want automatic threading, ditch the handwheels and go cnc.. there is no way in between..
@@JanBinnendijk For myself, others in the comments, and of course the video creator, this seems like a really useful way of having both capabilities. Why are you so invested in disagreeing? It just comes across as really rude and mean-spirited...