Better late then never!!

[Hack]

Well folks - Santa was pretty good to me this year and brought me this neat little thing called a digital camera. Yes!!!!

Now I can finally share some pics with you folks of what I am building. This is my router with a cut size of about 32 x 48 x 6" . I wanted to be able to do 1/3 sheet of plywood. This is just a prototype and I already have plans to do a second / better one, but wanted to see how this performs as I may sneak a mill in before the next router.


I will use a PC Laminate trimmer for the spindle. Primare cutting will be done on solid wood and mdf. I haven't mounted the router yet obviously, but it is sitting in the garage waiting.

I just received some couplings from HobbyCNC last week (great service by the way) and will mount the steepers next (276 oz/in from Automation Direct)

[Hack]

Z axis complete with drawer slide linear guides (read freebeee!!)

[Hack]

Simply some aluminum angle with Abec bearings - seem to work very nice.

[Hack]

1/4 - 20 threaded rod (this will be the first thing to be replaced cause it will make it very sloowwwww) for the lead screw with some more angle and 1/2" HDPE drilled and tapped.

[Hack]

Stepper motors from Automation Direct - 276 oz/in Nema 23 Bipolar

[Hack]

I have pretty much decided on the xylotex for my machine but need a power supply that can work with that board and my motors. Can anyone point me to one that they have had success with?

TIA

[Hack]

Those motors are 2.8A per phase approx 30 Volts

[ger21]

http://www.mpja.com/productview.asp?product=12424+PS
http://www.mpja.com/productview.asp?product=15366+PS

A lot of Xylotex users use the power supplies from MPJA. You want to get at least 24V, and no more than 28V. And probably 6a or more.

You can get something cheaper from Ebay, if your patient. I got a 24V 12a for $5. I took a quick look, though, and didn't really see anything right now.

Btw, those aren't 30V motors. Automation Direct doesn't provide that info, but it's most likely 3-5V.

[BobLWeiss]

I like your design! Nice work.

Did you use angle aluminum on both the top and the bottom for the Y axis? How many bearings do you have on the X and Y axis each? I never thought of using angled aluminum that way...I might have to make another machine!!!

Take some more pictures..

Bob

[Hack]

I used angle for both the top and bottom on both the x and y axis. 8 bearings per axis - locks it in good. Was gonna do the same for the z but clearance was a problem. A pretty cheap method for longer axis if you don't need a lot of accuracy.

Automation Direct sells a 32 voly power supply that they reccommend for the above motors

http://web3.automationdirect.com/adc...r/STP-PWR-3204

That is why I assumed that they are around 30 volts. Am I wrong?

Dan

[ger21]

Originally Posted by Hack Automation Direct sells a 32 voly power supply that they reccommend for the above motors http://web3.automationdirect.com/adc...r/STP-PWR-3204 That is why I assumed that they are around 30 volts. Am I wrong? Dan

Yes, your wrong.
The reason their supply is 32V is because that is what works best with their drives. To get any speed out of steppers, you usually need to supply at least 5x-to 10x their rated voltage. So most likely they are rated at a lower voltage. I *think* you can determine the voltage be measuring the coils resistance.V = amps x resistance.

But, like I said, to keep your Xylotex safe, use 28V as a MAX.

[jgro]

This is the power supply that I'm using. Works great. http://www.allelectronics.com/cgi-bi...465&type=store

jgro