New Machine Build- X3 build pulling the Trigger couple questions

[Jeff Davis]

Been a long time lurker and I have spent the last few days reading as
many posts on the X3 conversion as I could find.

The controls and power supply is the only item I really have questions about.

http://www.kelinginc.net/Three34XCNCPackage.html offers
this package, but I have not seen anyone using this for their conversion.
Is this setup considered a little wimpy?

For the rest of the build will use the CNC Fusion Deluxe Kit, with the Helical
couplers and a gas strut. Plus all the other numerouse items I have
discovered here.



I did a homebrew X1 conversion about 5 years ago that came out pretty
well, its still working, but I am wanting to upgrade to something that
can handle a little more beef.

Thanks in advance for any advice on this build.

Jeff Davis

[SlowRiderr]

Yah good choice - except if you go to the site and buy everything separate instead of buying the "kit" you will save a few bucks.

[Deviant]

I have the x3 with the cncfusion deluxe kit, I went with servos and 320s.

It was a little bit of a learning experience. I think I made it more difficult than required.

If I did it over again, I think I would look at the gecko540. It will cut down on alot of the wiring/clutter.

One of these days, I'll actually make something more than a big pile of glitter.


*mumbles*

[southernexplore]

How does your machine run with the servos, and what servos did you use?

Thanks,
Tommy

[Jeff Davis]

The whole electronics motor package for this build is driving me nuts.

Been thinking about the 540, but i can't get any steppers in the nema 34 size
with low enough inductance.

The 203V's seem popular and well made, but three of those do not come cheap.

I have seen some full size CNC mills on Ebay for close to the price of what
this will cost me when I am done. Granted I have no clue how to move a
10,000lb machine 400 miles, and where to put it if I did.

Is there a Nema 34 stepper that will work with the Gecko 540? An still have
enough juice to run the Z axis?

Thanks for the input,

Jeff

[Deviant]

I believe that my servos are nema 23, 225-250oz, 36v 3600 rpm...

Or close to that.

I haven't seen any problems with it moving the mill. In fact, I would say that it moves the table too fast.

I expect that I will not be able to cut at it's fastest speeds.

I had cncfusion modify my kit to use nema23's.

I believe there is a post around here.... Where Al or Hoss posted nema 23/34 motors that would work happily with the 540.

In hindsight, I wish I hadn't gotten as hung up in the details of trying to build the super machine.

I still spend more time fussing with the machine that I would like. One of these days, I'm going to break down and buy a Haas or something.

Playing with these machine is definably an exercise in patience and frustration.

*grins*

[HimyKabibble]

Originally Posted by Jeff Davis The whole electronics motor package for this build is driving me nuts. Been thinking about the 540, but i can't get any steppers in the nema 34 size with low enough inductance. The 203V's seem popular and well made, but three of those do not come cheap. I have seen some full size CNC mills on Ebay for close to the price of what this will cost me when I am done. Granted I have no clue how to move a 10,000lb machine 400 miles, and where to put it if I did. Is there a Nema 34 stepper that will work with the Gecko 540? An still have enough juice to run the Z axis? Thanks for the input, Jeff

Jeff,

What makes you think you *need* a NEMA34? Plenty of people have done X3s with NEMA23's on the Z axis. My X2 is using a 270 oz-in NEMA23 with no springs, counterweights or any other assistance, and it works fine at 50 IPM. When I put in the 495 oz-in motor I have on the shelf, it should easily do 100 IPM, which is all you can really use on these small machines.

Regards,
Ray L.

[Jeff Davis]

Life got in the way, but the X3 will be here tomorrow and the CNC Fusion Deluxe Kit should be here next week.

I am still stuck on the Stepper and Driver selection but I am thinking about the following.

3- Gecko 203v
2- 425 oz stepper from Keiling
1- 640 oz stepper from Keiling
1- 72 volt PSU from Keiling

The breakout board is still unknown....

If i did the math right on the above steppers the 72v PSU should be about on the money.

I am quickly approaching my budget limit for the project, is there a less expensive way to do this part of the build that I wont regret in a week?

Thanks again,

Jeff Davis

[Crevice Reamer]

Hi Jeff. Welcome to the Zone!

Here are my recommendations for the X3:


$098 2 KL23H284-35-4B 387 oz motors for X and Y.
$089 1 KL34H280-55-4A 637 oz motor for Z.
$417 3 Gecko G203V unkillable drives.
$189 KL- 6515 65v 15A PSU.
$183 1 PMDX-132 Combo breakout board.
-------
$976

http://kelinginc.net/

http://www.pmdx.com/

Now, it's only experimental so far, and the few people trying it have not reported back yet, but there MAY be a less expensive way to go:

$289 G540 This IS a breakout board also.
$098 Keling KL23H2100-35-4B 381 oz motors for X and Y
$099 Keling KL34H295-43-8A 906 oz N34 motor for Z (Detunes to 520 oz W/G540. Changing Z pulley to 1.2:1 = 640 Oz)
$060 Keling KL-350-48 48V/7.3A PSU. (This will handle 3 motors. 4th axis needs more amps.)
---------
$546

You would also need to substitute THIS pulley for the stock CNCFusion motor pulley:

https://sdp-si.com/eStore/PartDetail...52&GroupID=217

CR.

[HimyKabibble]

Originally Posted by Jeff Davis Life got in the way, but the X3 will be here tomorrow and the CNC Fusion Deluxe Kit should be here next week. I am still stuck on the Stepper and Driver selection but I am thinking about the following. 3- Gecko 203v 2- 425 oz stepper from Keiling 1- 640 oz stepper from Keiling 1- 72 volt PSU from Keiling The breakout board is still unknown.... If i did the math right on the above steppers the 72v PSU should be about on the money. I am quickly approaching my budget limit for the project, is there a less expensive way to do this part of the build that I wont regret in a week? Thanks again, Jeff Davis

The Homann Designs breakout boards (www.homanndesigns.com) are very nicely made, and very cheap. Not as full-featured as some of the more expensive ones, but they have what you really need, and no more, and work flawlessly. I used two in my latest build, and not so much as a hiccup.

Regards,
Ray L.

[Jeff Davis]

Sweet, Mill arrived today all in one piece!

Started the red goop removal, was not to bad. I think that the X1 I purchased years ago was worse.

I performed the motor break-in, but the drive still seems a bit loud/noisy. Hard to say though, I don't have a reference.

Anyways, now for the Fusion unit to show up.

I like the idea of the 540 unit, well I like the $400 cheaper price, before I bite off on the electronics I would for sure like to hear back from anyone who has tried that option.

Again, thanks for all the help!

Jeff

[Jeff Davis]

I have been following the 540 X3 post and trying to weigh out my projected
needs vs cost. The electronics package will cost me more then my entire
X1 conversion including the mill, let alone the cost of the mill and the Fusion
kit

From all that I have been able to read now the kl23h2100-35-4B has the
speed and power I need for the X and Y. The Z is always the bugger. I
think the following will hit the ticket for my paticular needs and provide it
with little compromise to performance. The nema 23 and 34 both have a
low inductance which if I am thinking correctly should keep the speed of my
rapids decent and still provide plenty of torque. In this config I get the full
torque of the 906 oz stepper which might negate the need of adding a
counter weight assembly and since it isnt de-tuned I will not need to
purchase a different pully for the Fusion kit.

Like all things there is a compromise but I think for my needs this might do it.

Please give your opinions!



$105 1 KL34h295-43-8A Stepper
$98 2 kl23h2100-35-4B Stepper
$129 1 G203V Gecko Drive
$138 2 G251 Gecko Drive
$35 1 MB-02-V5 Bidirectional Breakout Board
$149 1 KL- 4813 PSU


$654


Jeff