4" Vertex Rotary Table CNC conversion

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sbwhart:
Great work Chris :thumbup:

That is a tidy bit of kit :clap: :clap: :clap: :clap: :clap:

Can't wait to see it in action.

Have fun

Stew

PS I bet you could profile cams with that no problem at all

:proj:

spuddevans:
Well that is just great :clap: :clap: :clap: Well done that man :thumbup: :thumbup:

I'm glad to see the details on the stepper motor mounting, I plan on doing a cnc conversion on on my mill and also on my RT next year, so thanks for showing us those details.

Cant wait to see you use it in anger :thumbup:

Tim

NickG:
Chris,

I know a guy at our club that made one of these for another member and he swears by it. Where did you get the electronics and did you have to solder all the circuitry yourself or was it sort of modular and just plug bits into other bits?

It definitely looks to be the way forward, guess the only thing is you need to hang it off the edge of the table for the motor to clear or pack it up.

How much of a saving do you think you made in total over division master then?

Very well done :thumbup: :bow:

Nick

raynerd:
SpudEvans - in actual fact the mounting was quite easy once I got into it. I based it on the design that L.C Caine use on their divisionmaster. I used the retaining ring and lip as I wasn`t confident in securing the solid block ring into the end of the tube, this way the circle locks up and holds the tube to the rotary table. It also has the added advantage that you can spin motor mount tube to a position that suits. It would have been much easier to use a longer tube and then neater by using a thinner motor mount bracket, mine had to be thicker to get the extra clearence I needed.

Oldham couplings are a delight and this is where I went wrong with my X2 x-axis conversion. I`m inclined to say that I actually did it correctly and it would work if I`d have used Oldham coplings. It didn`t because the motor shaft was not 100% in line with the X-axis lead screw but Oldham couplings would compensate for this small amount. I think i`ll try it again shortly with couplings and I`ve a feeling it`ll work! I was only a mm or so off alignment but it was causing the lead screw to twist without them.

NickG - regarding hanging it off the table, the original handle on these is so large that they need mounting hanging off the table anyway so this is just the same but obviously takes a little more room.
Regarding cost - owning a Vertex Rotary table already, DivisionMaster costs:
Assembled unit £200
PSU £ 35
Nema23 motor £ 45
4" Table mount £ 40
Shipping £ 7
VAT @ 15% £ 49.05
Total £376.05

I already had the motor so I just needed the electronics which cost me about £27 and the Oldham couplings £14 = £376- £41 = Saved: £335
That being said, the DivisionMaster has a built in driver for the stepper motor but this indexer does not. Again I was lucky as I already had a 2.5A routoutCNC driver not in use but that would be an extra £25 on top. Still a lot cheaper. I had someone help me put it together so again I was lucky and for saying that, you can buy the DivisionMaster as a kit I think for about £150 ish? So you can save there.
I believe, that this indexer actually has much more functionality than the DivisionMaster and has quite a few alternative uses.
Well worth making one and it seems to work an absolute treat!
Chris

raynerd:
http://www.cnczone.com/forums/showthread.php?p=366777#poststop

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