Gallery, Projects and General > How to's
Making a Sub Spindle
sbwhart:
--- Quote from: arnoldb on September 20, 2009, 04:15:23 AM ---Great going Stew :clap: :clap: :clap:
I like your idea of UMM :lol: :lol: - could make life interesting for copy-cats :lol: :lol: :lol:
:beer: Arnold
--- End quote ---
They'd certainly be doing a lot of UMM-ing :scratch:
:lol: :lol: :lol: :lol:
Stew
sbwhart:
OK Chaps now for the spindle this bits is quite long 18 cm or 7 " in old money, Most of my bar ends are shorter than this but then I remember I had 3 ' of 32mm dia free cutting tucked away behind the lathe.
First job was to hack saw off a good 7" length, then as I was going to turn it up between centres I needed to put a good deep centre drill in each end for this the bar was sticking out an uncomfortable long way. Took it steady not to fast a speed, :thumbup: but didn't try facing it off that would have been desaster, I'll just have to live with the cut face.
Working between centres for long jobs as a number of advantages not least you can take the job from between the centres turn it round and everything will still be concentric.
To set up for turning between centres you need a fixed centre in your head stock and a driving dog,
you can use your chuck simply turn a centre on a bit of steel and use the chuck jaws as the driving dog
And you need a carrier on your work this is my collection, picked up from scrappies
First cut
After the first cut mic the work up and check for taper if you've got a taper you can adjust this out by moving your tail stop over:- if is low the tail stop needs moving away from you if its big move it towards you.
The tail stock has two adjusting screws one each side, you simply unlock slacken of the clamp bolts (not the one that clamps it to the slide) and adjust the screws together screw one in screw the other out this slews it over, I do mine with two screw drivers, some have bolts.
These are the clamp bolts on my lathe with a graduation so you can keep track of how much you move it, I put an additional two marks on mine showed where it cuts parallel, for easy setting.
Once I got it parallel I got it to 0.1 over 15 cm length which is good, I turned the large diameter to size, swapped the carrier around so that I could machine the other end then roughed everything out to withing 0.5 mm.
Then as one of the bearings need to slide over the middle section I turned this under size, then very carefully turned the bearing location to a nice shake free fit on the bearing.
And this is it in the bearing housing everything lined up exactly.
Then back in the lathe and screw cut the thread for M12
This is the nearly finished spindle at this point I called it a day Gasping for a cuppa.
Next job cut the key way.
Have fun
Stew
NickG:
Looking good stew :bow:, I know the theory but have never tried turning between centres before. I don't have a catch plate although I guess I could either use the chuck as you said as I have plenty of length between centres, or unbolt the chuck and do what you have done. I don't really like disturbing that although it will go back in in the same place, It's just I made the register quite a tight fit though. Not sure if I have any carriers any more either.
So do you have anything in particular you're going to be using this spindle for?
Nick
sbwhart:
--- Quote from: NickG on September 21, 2009, 11:39:29 AM ---
So do you have anything in particular you're going to be using this spindle for?
Nick
--- End quote ---
I'm going to use it for a tool post grinder and if all goes to plan a home brewed cutter grinder and if that works I want to use it to make a gear cutting fly cutter and if that works a clock
I think it all started when I swallowed a fly :lol:
Tools make tools that make more tools that make things
Cheers
Stew
Darren:
Very nice Stew, I want to go out and switch my lathe on now....... :clap:
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