Pedro; I've been thinking about doing this for my larger Lorch lathe, and I came up with an idea about gearing... I think that you can use bicycle gearing, as the chain rings and rear sprockets are available in almost any tooth count, more easily than gears, and, with three sprockets and two chains, a huge selection of ratios available, and really easy to change, especially if you have the sprockets set up in "common" ratios... I figured an inch to metric conversion ratio, for one range, and then you only need a few for the common thread pitches, especially metric... And, also, easy to set up for threading away from the headstock! It's just a thought...
Hi Lohi Your idea could work. The only challenge using bicycle sprockets and chains is how to reverse the direction of the feedscrew. The idler gear on mine is for doing that.
If you have a large idler sprocket, and "wrap" the chain over the driven sprocket(s), you can just have the driven sprocket be on the "top" or "bottom" run of the chain, kind of flipping the idle above or below the driven sprocket...
Amazing update to the lathe for thread cutting. It's lovely and simple but very effective that allows so many thread types to be cut. A great job.
Very impressive. Actually considerably better than the original equipment - no ball races on the original Schaublin device. Well done.
Very nicely made, thank you for sharing.
13:20 Pedro, notches = keyway, the groove for a square key to drive the rotation of the gear. Very nice work, by the way.
Nicely done, thanks for sharing!
What a beautiful machine
Just found your channel and Subscribed. Very nice work
The square shoulder 'fence bolts' are also known as carriage bolts and coach bolts
Pedro;
I've been thinking about doing this for my larger Lorch lathe, and I came up with an idea about gearing... I think that you can use bicycle gearing, as the chain rings and rear sprockets are available in almost any tooth count, more easily than gears, and, with three sprockets and two chains, a huge selection of ratios available, and really easy to change, especially if you have the sprockets set up in "common" ratios... I figured an inch to metric conversion ratio, for one range, and then you only need a few for the common thread pitches, especially metric...
And, also, easy to set up for threading away from the headstock!
It's just a thought...
Hi Lohi
Your idea could work. The only challenge using bicycle sprockets and chains is how to reverse the direction of the feedscrew. The idler gear on mine is for doing that.
If you have a large idler sprocket, and "wrap" the chain over the driven sprocket(s), you can just have the driven sprocket be on the "top" or "bottom" run of the chain, kind of flipping the idle above or below the driven sprocket...
Anyway, today, just wondering how the project is going?
Again, i'm just wondering how the project is going?
It works wonderfully! I have already made several replicas of non standard screws and it is just what I was looking for.
Ah-ha ... Bueno!
I've been off line a while, was wondering how it is working... Nice to be able to make whatever you need!
That's a very well executed tool, well done. Did you make the transmission shaft and its universal joints yourself, or buy it, and if so, where from?
I bought it. Drop me a line to pedrofono@pedrofono.es and I will send you the link