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| Servo Driven 4th Axis for CNC Mill |
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| awemawson:
So I've finished the CAD for the cover, drilled an access hole for the encoder pulley Allen key, all I need now is to work out how to hold the cover when machining - the perennial problem :scratch: |
| awemawson:
So I cracked on this afternoon and got the belt drive cover made. First I cut the inner shape so it sits nicely with a lip |
| awemawson:
Then I reversed it and sliced 10 mm off it's thickness using the CNC mill 'sort of manually' :ddb: Then I screwed it down to a scrap chunk of aluminium for profiling: |
| awemawson:
And when that was done clamped it to the main body, and transferred the holes though with a 4 mm transfer punch and drilled and tapped them |
| awemawson:
Then just for devilment I thought that I'd reverse the cover to see how symmetrical it is. It was drawn symmetrical, but I've not allowed any tolerance on the screw holes. 4 mm screws in 4 mm holes and I measured the screws as 3.93 mm. I was quite amazed that it reversed with no problems at all :ddb: |
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