Plans Forward

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g2ktcf
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Joined: Wed Feb 13, 2013 8:35 pm

Plans Forward

Post by g2ktcf » Tue Apr 22, 2014 4:25 pm

Well, I am very good at buying lots of stuff and then never getting time to finish it. In fact, I know I have the serial number around here somewhere but cannot even find that right now! :shock:

I have both NEMA 17 and NEMA 23 motors and the original stock Shapeoko. I do plan on doing several of the upgrades but I want to get everything working first. Now all I need is a spindle. I saw one comment that the DW660 is too much for the stock unit. However, a Dremel to me is garbage and I really do not want to go this route (I have seen the inside of these things!). Noise is not an issue as I have a huge shop to "hide" everything in :D Eventually I will get one of the water cooled spindles but until then, IF I AM CAREFUL...will the DW660 be okay for the short term?

I have seen lots of comments about V2 and there is a lot to like but I have one unit already!!! lol

WillAdams
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Re: Plans Forward

Post by WillAdams » Tue Apr 22, 2014 4:34 pm

Just implement the Dual MakerSlide X-axis upgrade and you should be good to go on a Dewalt DW660 --- for testing purposes, you could probably make a couple of cuts w/o doing any lasting damage, the problem is the weight of the unit as compared to a Dremel and the additional vibration I believe.
Shapeoko 3XL #0006 w/Makita RT0701 Router w/0.125″ and ¼″ Elaire precision collets
Nomad 883 Pro #596 (bamboo)

Will Winder
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Re: Plans Forward

Post by Will Winder » Tue Apr 22, 2014 6:46 pm

I ran with a stock shapeoko and a DW660 for over a year, I've cut up to 1/4" aluminum in this way with no problems. Upgrading to dual extrusions will certainly help, but you can do just fine without it.
ShapeOko #367: Dual-Y drive, Belt on outside, 1000mm Y-Axis, DW660 Spindle, Nema-23 X/Y motors.

Primary developer on Universal Gcode Sender.

g2ktcf
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Joined: Wed Feb 13, 2013 8:35 pm

Re: Plans Forward

Post by g2ktcf » Tue Apr 22, 2014 7:01 pm

Thanks Guys! I am actually working on a parts list now for the Dual Motor and Dual X Gantry now. I have noticed that this will not be a clean as "order the kit" though lol. I have NEMA 23 motors so I want to do that at the same time.

g2ktcf
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Joined: Wed Feb 13, 2013 8:35 pm

Re: Plans Forward

Post by g2ktcf » Wed Apr 23, 2014 6:45 pm

Man, things cannot seem to go right. My new 142 oz-in NEMA 23 Stepper Motors have 6mm shafts!!! I cannot seem to find any GT2 pulleys for this shaft size. I leave an email with the folks at Stock Drive Components but does anyone else have any suggestions?

edwardrford
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Re: Plans Forward

Post by edwardrford » Wed Apr 23, 2014 6:54 pm

Hi g2ktcf -

I'm not trying to talk down to you (honestly, i'm not).

It's very common for nema23 motors to have 1/4" shafts (6.35mm). If that's the case, then finding a 1/4" coupler should be very easy.

-Edward
Shapeoko 1 #0 - a couple of upgrades.
Shapeoko 2 #0 - a couple of upgrades.
Shapeoko 3 #2 - Stock

dcartier
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Joined: Mon Feb 17, 2014 6:53 pm
Location: Brampton, Ontario

Re: Plans Forward

Post by dcartier » Thu Apr 24, 2014 10:35 am

Hi g2ktcf,

I have been there, except from the other direction. I have some servo motors that I assumed had 1/4" (6.35mm) shafts and ordered expensive couplers only to find out the servos have 8mm shafts! To Edwards point, Nema 23 motors have 1/4" (6.35mm) shafts.

You can get affordable GT2 couplers from robotdigg.com. Their couplers are not the best quality, but they are all aluminim, and they are quite affordable. The last time I orderd anything from them I added 2 of every size of GT2 coupler they sell to my order in all shaft sizes from 5mm through 8mm, just so I would have a supply on hand incase I needed one.

Dennis

Gadgetman!
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Re: Plans Forward

Post by Gadgetman! » Thu Apr 24, 2014 11:41 am

Actaully, NEMA motors can have a lot of different shafts.

NEMA 23 = Flange size of 2.3", nothing more.

It is more probably a NEMA 23D025, with the '25' part indicating a 1/4" shaft.
But that's only the DEFAULT shaft number.

A NEMA 23D020 is also a viable motor, and then it has a 0.2" shaft, which is close enough to 5mm that it makes no difference.
(NEMA 17 motors used in the ShapeOko or 3D printers are NEMA 17D020 )

http://classxboats.com/htdocs/Engineeri ... ics_16.pdf
(The interesting stuff is from page 48 and onwards)

Anyway, a 'NEMA 23' motor is bound to have a shaft that's some weird fraction of an inch, not a metric shaft.

And yeah, weirdly enough, a METRIC NEMA motor starts off with the shaft diameter instead of Flange size...
Weird guy...
Shapeoko 2014F: 1000mm X/Y, 300W Quiet Cut spindle, Arduino Uno/G-shield and GRBL 0.9i
15x30 drag chains, custom spindle mount, 9mm belts, 8mm endplates, 6mm motor plates.

g2ktcf
Posts: 18
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Re: Plans Forward

Post by g2ktcf » Thu Apr 24, 2014 12:15 pm

I got these motors from here....

http://www.ebay.com/itm/121246818257?ss ... 1497.l2649

I have asked the seller about the pulley details but as of yet have no answer. I was just planning on removing them. Last night I realized that they are pressed on so I need to fashion a puller to remove them. I did take the motor apart and the quality of the motor is easily seen. I picked up 6 of these for $100. I figured that was pretty decent. The only downside was they are 200 steps/rev.

edwardrford
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Re: Plans Forward

Post by edwardrford » Thu Apr 24, 2014 1:14 pm

Actually, my point was only that it is very common for nema23 motors to have 1/4" shafts. The vast majority of nema23 motors that I have interacted with have been 1/4" shafts but just as Gadgetman!' pointed out: the shaft size could be anything.

The shafts may very well be 6mm as the OP claimed. I just wanted to point out that it's common for the motors to have 1/4" shaft, and if it were indeed 6.35mm then finding a coupler to fit that should be very straight forward.

nothing more. nothing less.

-Edward
Shapeoko 1 #0 - a couple of upgrades.
Shapeoko 2 #0 - a couple of upgrades.
Shapeoko 3 #2 - Stock

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