Taylor Hobson Thread Chasing Lathe Part 1
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- čas přidán 20. 08. 2024
- This is an introduction to the lathe that I've been restoring on and off for the last 4 years. It's the only example of this lathe I've been able to find anywhere so what's presented here is the result of a lot of trial, error and detective work.
The lathe is very much work in progress but this video gives a glimpse of what it's capable of. It is pre-CNC automation at it's finest!
Very interesting, nice job getting missing parts made and working well. Thanks for great video again
that is a very neat machine, Ive never seen one before, excellent overview thank you
Thanks! I don't think anyone has seen one before, and if they have, I'd love to meet them and learn more about it!
There are illegal substances that are less addictive than these videos Robert. Thank you!
I'm still amazed that people like these videos! Amazed, but very pleased. Thank you!
@@ThePottingShedWorkshop You are an excellent expainer of machine work without a load of bull that is often on other machining videos. Mechanical understanding is vastly under rated.As a home machinist with pretensions of adequacy it's easy to follow along with enough information to say why,not only how. Thankyou for sharing this with us!
Excellent work,Robert.Thank you for posting.
Thank you! It's taken me over 4 years to get it running as the enthusiasm wanes at times.
I've seen a machine very similar to that many years. I believe at the Bausch and Lomb optimetrics plant where they made lenses of various sorts. In house making their own machinery to make the precision optics.
Thabks for the video! I have read and heard that thread chasing lathes exist but I hadnever seen one or really understood what they were!
yes , i found it interesting! what a fantastic little piece of machinery, almost like a turret lathe in a roundabout sort of way.
Glad you liked it, thanks! Yes, it's a bit different. I wish I could find more info on it.
Well it's certainly an unusual little lathe.
I guess it would be very handy for the model engineer to turn all those small oddball screws they like to use.
Thats the only sort of use I could come up with for it! I guess I'd better make a 40tpi hob and follower for ME threads then!
Beautiful work Robert!
Thank you very much!
Thanks Robert a testament to pre CNC ingenuity and well done for getting it operating. Solves the problem of pitch error on an engine lathe as the thread master governs this. I expect you have seen Steve Watkins’s Hardinge “Bob” that also uses thread masters although I don’t think he’s ever used that function. Would be interested to know how many masters you have to go with it perhaps that’s in your upcoming videos.?
Thank you! It has tested my perseverance I'll admit. I've come close to giving up following a number of failed attempts to get it running. As for how many threading masters it came with.... absolutely none! All disappeared long before I acquired it. The 20tpi hob and follower were made by me. I will probably repeat making one on camera soon (previous one was before I started this channel seriously) as the follower is an interesting setup.
That's a nice toy to play with. Looks like a lot of fun.
Thanks Michel. I've been playing with this, on and off, for 4 years to get it functioning!
Another fascinating video. Thank you Robert 👍
You have some magnificent machines. That really is a genius mechanism!
Thank you! I'm still not sure what I'll do with it when (if) it ever gets finished. It is indeed an ingenious mechanism. I hate the slipping clutch though, it just seems a bit of an afterthough as its just a spring washer bearing on a small area of the end of a hardened shaft.
Very cool machine. Great solution for the drive; I hope you get a chance to compare to the original mechanism so you can compare and contrast your approach.
Thank you. The drive train is half bodge, half necessity to get it to function. As for finding how it was done originally, I think the drive belts were much longer. I do have an original intermediate pulley with a swivel mount, but it needs a really deep front to back depth to work and I wanted something far more compact. There is no info on the web anywhere I could find. Google it and all you'll find is a posting on mig-welding.co.uk, by... uh, me!
Fascinating machine - thanks for sharing👍
Thanks. I thought this might be a bit different to the usual offerings on youtube!
Fascinating.
Thank you. It seems to be a bit of a unique beast now.
Woah... there's just so many things on that lathe that I've never seen the like of before!
Might be nice to have some means of locking the head stock for when you're doing normal turning, not threading??????
Yes, it just might be the only example left. It would be criminal to scrap it, hence the efforts I've put in to get it going. I can't disagree with you over the headstock lock. Its possible I've missed something as I seem to learn a bit more about it every time I work on it.
Excellent quality, would it not have been better to tension the belt on the out. This would allow the belt to contact more of the circumference of driving pulley. Or move the pulley mechanism with headstock and keep constant tension.
I considered it but there's not a lot of clearance beneath the belt as the camshaft motor is under there. As for moving the pulley mechanism with the headstock, I considered that too but it just moves the problem onto the next belt.
Know what you mean, great job nonetheless
An amazing machine.
Isn't it just! I just wish I had more info on it. It's not serial number 001, so other examples must have existed once, but it seems, based on my internet searches, to be the only one still going. Unless you know different😁!
@@ThePottingShedWorkshop Hi again, unfortunately I have never seen the likes of your machine. Hopefully you will find another one or two still lurking out there somewhere. Good luck.
Have you considered instead of using a serpentine belt, using a coged belt with the driving pulley wide enough to allow the belt to walk back and forth with the headstock?
Thanks! I was offered something very similar back 30 years ago for $250, but would have needed a trailer, bigger truck, and friends just to obtain it. I'm more interested in the head stock arrangement, have any pictures of the underside of the head stock and where it mates? The tripping mechanisms remind me of my planer that was converted to hydraulics, I need to change it to electric as at times it bounces and continue going the original direction, have to watch it constantly for that rare occasion.
Shame you didnt get that machine. I would have been very interested in the drivetrain.
It looks like I'll probably have enough topics to cover in a follow up video on this lathe. I have a bunch of still photos too from where I stripped it down, so I can add them in too.
@@ThePottingShedWorkshop Cool, thanks. I'm in one of those situations where one has to build the machine to make the machine that makes the machine. Yeah, I almost blindly bought it, knowing it would be difficult. The guy was super nice, owned a huge machine shop, he was showing me around and he had these two story high presses, maybe six of them, he said he bought just so they wouldn't be potentially competing. The screw machine was very similar to the picture shown originally, approx. 6'x6'x5', looked awfully heavy, but the learning and no need for a hardware store. Now, would be the time to have one, just the other day I bought a couple of small set screws and the cashier misspoke and said $73.10 instead of $7.31 and I told her, Boy Howdy, we are in the future!
Looks like a revised version of the holtzapffel ornamental turning lathes with screw cutting function the spindle slid forward following a precut thread and nut. I wander how many lenses housings and fine threads this type of machine made and how often it was cutting bsb threads. Have you considered trying ornamental turning with it? T.D. Walshaw wrote an okay book on the subject more history than practical examples
Funnily enough, I bought the lathe off a chap who had a garage full of ornamental lathes. I think he was the president of a society dedicated to such things. I never got into ornamental turning, although to my surprise I have a copy of that book!
@@ThePottingShedWorkshop makes sense thats a clever piece of equipment that wouldn't be out of place in an ornamental turners collection. I want to do some decorative metal work along the lines of that but am probably going to do a it with an spirograph set and a pantograph engraver. Is it a project machine for you or are you looking to use it in a production capacity to produce parts?
@@ambisinisterengineering5242 I bought it a month or so into lockdown in 2020. It was intended to be something interesting to do whilst we couldnt do anything else. I'll get it finished then use it very rarely I suspect, unless someone wants hundreds of bespoke brass screws making!
That is one cool machine..thanks for sharing
Thanks. Yes, it's a bit different. I thought I'd share it for posterity if nothing else. There can't be many (any?) others in existence now.
Well it's certainly an unusual little lathe.
I guess it would be very handy for the model engineer to turn all those small oddball screws they like to use.