Gallery, Projects and General > How to's

Making a Sub Spindle

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Darren:
Stew, when you get a moment can you show us you digi on the lathe. Did it have to be upside down?

sbwhart:
Hi Darren

This is it



Looking at it I suppose I could have had it further away, I was a bit concerned about protecting it from swarf etc. I'm not going to have it in place all the time, just when I need it when screw cutting.

Cheers

Stew

Bernd:
Hey Stew,

I've just got to ask. When you got closer to the driving dog with the coolant, did you get your face sprayed?  :lol:

Bernd

P.S. Nice thread by the way.

sbwhart:

--- Quote from: Bernd on September 21, 2009, 01:42:54 PM ---Hey Stew,

I've just got to ask. When you got closer to the driving dog with the coolant, did you get your face sprayed?  :lol:

Bernd

P.S. Nice thread by the way.

--- End quote ---

Yes   :doh:

Stew

sbwhart:
Ok on the home run now Chaps

Next job cut the key way

Mark where its to go



Find centre of bar and with a 3mm slot drill mill the key way



And mill up and fit brass key



Thats the shaft done next job the spacers that go between the bearings.  There's two spacer 30mm ish long each

Simple turning and drilling job both spacer turned up first before adjusting length



You have to adjust the length of the spacers so that the length of the two together equals the distance between the bearing plus a little bit to tighten down onto.

So put one bearing and spacer into the housing and carefully measure the depth to the spacer, then measure the depth  to the bottom of the bearing pocket take one from the other and that the length to make the other spacer put the spacer back into the lathe using a back stop, I simply put a parallel behind while the chuck was pinched up the removed the parallel, faced some off took it out of chuck measured it up put it back in chuck up against the parallel, removed the parallel and took a little bit more off to give desired size.

I thinned down a couple of M12 nuts to give me some lock nuts



Now for the pulley this is made out of a bit of 2 " Ally  simple turning job



To cut the Key way in the pulley I made a small 3mm wide shaping tool that was held side ways on in one of my boring bars, to get the tool on centre I measured the centre hight off my lathe setting tool added 1.5mm to this height and that became the height to set the tool.



Setting the tool on height



It was then a mater of winding the saddle back and two and nibble out the key way






Thats all the bits nearly made I can't finish it off until I settle on the motor and grinding wheel fixing which I'll post as part of my Tool Post Grinder build.

These are all the bits



And the assy



Have fun

Stew

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