Joe's CNC Model 2006

[joecnc2006]

I went to lowes and looked around but did not really see anything i wanted for motor mounts that would accept the 10-24 screws needed for the nema23 motors, so i descided to make my own it is very stout, cut them out then drilled and taped the ends for the screws to secure it from the bottom and also the motor to mount ontop, here is what i came up with (I will know when I get the machine up and running if the heat from the motors will have any effect on the HDPE but i think it will be ok).

[sdantonio]

Hi joe,

I saw that you went with the lovejoy couplers that Andy recomended. I did a search for alternative couplers and found that McMster-Carr http://www.mcmaster.com/ sells exactly the same thing for considerable less. Coupler hubs are about #2

[sdantonio]

sorry, hit the wrong button. Coupler hubs are $3.26 each and the spiders are either $2 or $6.50 for buna or hytrel. So the whole thing can be <$10 for a complete coupler assembly. The lovejoys I've seen are running around $30 each. just thought I'd mention this in case your looking for more or if someone else is looking for them. On the McMaster site just do a find product search under spider and a padge of them will come up.

Steven

[joecnc2006]

Originally Posted by sdantonio sorry, hit the wrong button. Coupler hubs are $3.26 each and the spiders are either $2 or $6.50 for buna or hytrel. So the whole thing can be <$10 for a complete coupler assembly. The lovejoys I've seen are running around $30 each. just thought I'd mention this in case your looking for more or if someone else is looking for them. On the McMaster site just do a find product search under spider and a padge of them will come up. Steven

Actually USE-ENCO.com is cheaper here is the actual shipping order of mine, so if you need the part numbers its on there, and other things i got for my machine..

[joecnc2006]

The lovejoys had a ever so slight little play in them with the Rubber type Spiders that come with them so i cut my own and they fit tight and no play at all now.

[ger21]

The play is (was ) to allow for slight misalignment.

[joecnc2006]

Originally Posted by ger21 The play is (was ) to allow for slight misalignment.

I should not need it in my machine, it is pretty much dead on for alignment or within reason.

[joecnc2006]

I just was not satified with my Z Axis so i redesigned it and I am now using skate bearings It is very smooth and easy to move compaired to the other one I had In posts #41.

This has two 6" bearing slides and I managed to design it in such a way as to use U bolts and another bearing on the backside to keep it snug against the 3/4" Drill rod.

I am very happy with it now, and it has no racking in it at all that i can tell by trying to twist it by hand.

The travel is 6 3/4"

Joe

[Lionclaw]

Pretty nifty Joe. Looks good.

[sdantonio]

Hi Joe,

Nice fix on the Z-axis, creative. Can't wait to see the whole thing together

Steven

[joecnc2006]

Thanks, Lionclaw and sdantonio,

I believe it will work out better, I started cutting the bottom portion and will pick up the pipes this week, the galvanized gas pipes are a little more expensive than the black, but i like them because of no paint on them.

Has anyone Used EMT piping? it is thinner, and i was thinking in this design where the rails are fixed and supported they might workout.

Joe

[sdantonio]

For some reason I thought I had heard bad things about the galvanized gas pipe. I don't remember exactly what the comment was though. It could have been just price related.

Steven