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Servo Driven 4th Axis for CNC Mill

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awemawson:
Look carefully at the picture and you can see the new roller at 'ten o'clock'.

So on to the side thrust bearing. This has 80 little rollers all of which need to stay in their places as the table / worm wheel assembly is re-fitted. The usual trick is to smother them in grease, and this I did, but needless to say it was 'fun' as they kept sticking to my fingers and coming off again  :bugeye:

However we got there :

awemawson:
And not only that, but I got the table on and it's hold down keeper fixed.  :ddb:



AND The table is now free to turn  :clap: :clap: :clap: :clap:

Hoo- flipping - ray  !!!

So I am now sure that the jamming was that broken roller.


 . . more to come later  . . . watch this space  :lol:

Andrew

RussellT:
Hi Andrew

Well done.  It's coming along nicely.

The hollow rollers are unusual and I wonder whether there's a reason.  I wonder if it's to prevent shock loads from denting the bearing surfaces by making them a bit springy.  It seems unlikely as I'd expect them to be too hard to spring much.

Russell

dsquire:
Andrew

Well done. I love to follow along as you take it apart so you can figure out why it doesn't work as it should. As you have found out some times it can be a very small piece that has caused all the problems. You keep fixing them and I'll keep watching and cheering for you.  :D

Cheers  :beer:

Don

awemawson:
Thanks Russell and Don,

So a bit more progress: The table is back on and turning so I've started re-assembling the end bearing assemblies for the worm shaft. First the drive end:

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