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| Making a Rotary Table |
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| NormanV:
I made the casting today, I was melting a lot less aluminium due to the small size of the casting and I had it liquid in 30 minutes. I machined it this afternoon and was disappointed to find a sand inclusion but it does not affect the function and will not show when it is all assembled. The end of the shaft of the worm has a dog (I think that is what you would call it) so I had to mill a piece of steel to fit. Certainly a lot pleasanter task than trying to file it! The top face of the casting is going to be marked with twelve divisions which will give me one degree markings that I can use until I get the division plates made. |
| NormanV:
It is now assembled, albeit with a temporary handle. It is quite stiff to turn even with the PTFE under the table, at least there is no loose play! |
| DavidA:
Not bad, Norman. Not bad at all. Dave. |
| awemawson:
:thumbup: in fact pretty d@@n good :thumbup: |
| NormanV:
Thanks, Andrew and David. Today I made and fitted the table clamps, I did not proceed with the split collet that I mentioned earlier as it is a bit tight for space. Also I liked the fact that the table is pressed firmly down onto the top plate when using clamps. I drilled a matrix of tapped holes in the table top as suggested by Andrew, I may machine tee slots at a later date, I'll see how I get on with the tapped holes. I'm surprised at the weight, even though it is mostly aluminium it feels quite substantial. |
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