DIY CNC Build

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EV2Go
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Post by EV2Go » Mon, 19 Jan 2015, 19:07

Finally finished the Z axis after what seems like an eternity...



And here a walk around of the frame.

Last edited by EV2Go on Fri, 22 May 2015, 16:04, edited 1 time in total.

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Adverse Effects
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Post by Adverse Effects » Mon, 19 Jan 2015, 19:57

that shock/lifter worked out well

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EV2Go
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Post by EV2Go » Mon, 19 Jan 2015, 20:19

Yeah I think with some oil on the bearings and rack / pinion it will slide more freely and possibly self return. It does when it's on it side but not with the full weight at the moment. It isn't dropping down and that is really what I set out to achieve.
Last edited by EV2Go on Mon, 19 Jan 2015, 09:20, edited 1 time in total.

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Adverse Effects
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Post by Adverse Effects » Thu, 12 Feb 2015, 02:38

do you need shielded cable for the steppers? i have a spool of it here if you do

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EV2Go
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Post by EV2Go » Fri, 13 Feb 2015, 02:37

Thanks Ivan. A change of direction...
I've gone from rack and pinion to ball screw.
I had to have made up a few new 10mm plates to hold the end bearings.

Image

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Adverse Effects
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Post by Adverse Effects » Fri, 13 Feb 2015, 12:25

they are some serious ball screw's Image Image

TooQik
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Post by TooQik » Fri, 13 Feb 2015, 17:13

That's some very nice handy work there. Looking good. Image

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EV2Go
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Post by EV2Go » Sun, 15 Feb 2015, 03:31

Nearly there, oh so close...

Image

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Adverse Effects
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Post by Adverse Effects » Sun, 15 Feb 2015, 04:25

naaa still hours and hours to go mate :-)

but its looking good

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EV2Go
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Post by EV2Go » Sun, 15 Feb 2015, 05:49

Yeah but hours and hours is nearly done compared to the amount of hours I've got invested :D

T1 Terry
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Post by T1 Terry » Sun, 15 Feb 2015, 17:31

A far more robust piece of equipment now that's for sure. Looking really good, who is doing the welding? Trying to keep things square and straight when big gusset welds are applied takes a lot of careful weld pattern planning so the forces equal out. I remember making my first set of car stands in the stick welding class and ending up with a banana shaped base rather than a flat one :lol:

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EV2Go
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Post by EV2Go » Mon, 16 Feb 2015, 00:55

I'm doing the welding, but fortunately I had Ivan's assistance for much of the tricky stuff to help guide me into making sure it didn't turn out like a pretzel.

Considering my distinct lack of welding skill, it has turned out remarkably square :D

Wound up with something like 1mm out corner to corner measuring both ways. I'm sure there is commercial stuff out there that wouldn't be as square as this.

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Post by T1 Terry » Mon, 16 Feb 2015, 02:01

Gotta be happy with that, I think I've done well of all 4 legs reach the ground together :lol: Raising the roof and stretching the chassis on the bug bus project took a few calculations to get all the planes parallel, then discovered the part I hadn't messed with was way out of plum from the factory build 20 yrs before, so then I had to fix that as well, so I know what you mean as far as commercial tolerances.

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EV2Go
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Post by EV2Go » Fri, 13 Mar 2015, 02:29

Been a while in the making, but here is some video of my first test runs.

[tube]https://www.youtube.com/watch?v=jWoXiD5NPoI[/tube]

[tube]https://www.youtube.com/watch?v=yjqxtL1Ks7c[/tube]
Last edited by EV2Go on Sat, 23 May 2015, 07:01, edited 1 time in total.

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Adverse Effects
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Post by Adverse Effects » Fri, 13 Mar 2015, 02:58

that is just awsome

soon you will be able to re-cut all the wood parts with Ali and be fully up and running

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Adverse Effects
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Post by Adverse Effects » Fri, 13 Mar 2015, 03:02

so not long till we start on your RC mower then LOL

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EV2Go
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Post by EV2Go » Fri, 13 Mar 2015, 05:25

Adverse Effects wrote: that is just awsome
soon you will be able to re-cut all the wood parts with Ali and be fully up and running
Yep. Need to just relearn how to use Mastercam, the guy who showed me originally just moved back to England.

Worst case scenario I can always fall back to SketchUp, but would rather use what I semi know.
Adverse Effects wrote: so not long till we start on your RC mower then LOL
How cool would it be to make some of the parts on the CNC? :D

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Adverse Effects
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Post by Adverse Effects » Fri, 13 Mar 2015, 05:33

SketchUp with SketchUcam works well for all 2D and 2.5D stuff and from what i read 3D stuff as well but i have not been able to get 3D to work yet

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offgridQLD
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Post by offgridQLD » Fri, 13 Mar 2015, 13:28

Well done, Great to see it running. The sky is the limit now with what you can make.

RC lawnmower hey. I was just thinking the same thing the other day. I'm reasonably sure I have most of what I need to knock one up. Good simple Honda Hut 7hp mower. A few compact DC motor /reduction drive packages and a spare radio and receiver (I was sent two when I ordered one Image )


Kurt

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EV2Go
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Post by EV2Go » Fri, 13 Mar 2015, 14:19

Ivan had his out the other day mowing the front lawn and apparently half the street were watching with amazement of this mower driving itself.

More upgrades on the CNC to come. Time to start looking at e-chains.

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Adverse Effects
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Post by Adverse Effects » Fri, 13 Mar 2015, 15:28

this is a few years ago now had a main motor upgrade since

My Remote control lawn mower Monster Style

the tallest grass is about 6 foot tall
Last edited by Adverse Effects on Fri, 13 Mar 2015, 04:30, edited 1 time in total.

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EV2Go
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Post by EV2Go » Wed, 25 Mar 2015, 00:21

Finally after what seems like a life time, I have made my first real part (and also the CNCs first replacement part).

Lots of fun and games along the way with software issues and the odd motor issue that needed debugging.

I used the default tab setting which was a bit on the big side, but I have much bigger fish to fry before worrying about the little stuff.

So without further ado...

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Adverse Effects
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Post by Adverse Effects » Wed, 25 Mar 2015, 01:55

that is awesome and the cuts look ok as well

feels good dont it
Last edited by Adverse Effects on Tue, 24 Mar 2015, 15:00, edited 1 time in total.

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EV2Go
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Post by EV2Go » Wed, 25 Mar 2015, 03:04

Still need some fine tuning on the Z axis height measurement(using 1mm break through now). The cuts are remarkably smooth, which is promising for when things get better / stiffer.

Bought some new CAM software to replace the problematic Mach3. It's UCCNC and only cost 45 Euro and is designed to work with the UC100. Still fine tuning, but seems very easy to use.

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EV2Go
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Post by EV2Go » Sat, 28 Mar 2015, 04:57

Took off the hand made parts today and put on the CNC made ones. Nearly ready to start turning out some aluminium parts soon.


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