[hoss2006]

What program do you use to program all your Gcode and tool paths?
Also what do you use to model parts?

I use Autocad to make my prints, dxf's and DeskCNC to generate some basic code.
I just get the toolpaths for a set of holes or a contour etc. then edit them together in notepad.
Real basic stuff, cheap and easy for me.
I'll use Cut3D for 3D CAM help.
I have Alibre for making 3D models but it's not anything I've needed to do, YET.
Occasionally a wizard in Mach 3 is all I need to get a toolpath that I can tweak in notepad.
For text engraving, I'll either use the Mach 3 wizard or DeskEngrave, another freebie.
Hoss

[arizonavideo]

Hoss, I'm not saying your current readings are way off. Most likely the meter will be around + or - 10% so for the purpose it would be fine, but it could be off by 30% and then it might be important.

I'm just saying in the last three years I have seen most everyone over build their PS by a bunch and for a hobby machine it is wast of money.

I bet that coupler will show up a few days after you make a new one...

Hey you never said what you did to fix the crunchy sound from the ball screw? Was it a broken ball?

[hoss2006]

I have a 12.5 A PS recommended for these motors, going by the mariss rule,
it should be good even for running 4 axis, 20 * .6 = 12A.
Who would run 4 motors at once? stay tuned.
It's looking like I might be adding the 7.3A PS as a normal 3 axis option.
Any recommendations of a good Ammeter that I could wire up permanently
to keep an eye on this?
I want to keep an eye on the spindle motor load too once the console is built.
I made the new oldham hub but left out the little .555 dia. recess like the original in the print, not necessary.
I replaced the ballnut with a new one with all the same sized balls,
alternating one big, one normal didn't work well.
Hoss

[kanton]

Hoss,

Does the DeskCNC software run without the DeskCNC 2nd Generation Controller Board?

Thanks.

[daman]

Isn't it better to do the amp tests in low speed since in high speed the coils may not reach maximum current? That's why the torque curve goes down with speed.

Also give the axes slightly different speeds so they are not in phase.

Micro stepping sin-cos drive got this kind of current plot in constant speed (image with very fine steps, with 1/8 micro steps there should be visible steps)
http://www.wolframalpha.com/input/?i=Plot[Abs[Cos[x]]+%2B+Abs[Sin[x]],+{x,+-2+Pi,+2+Pi},+{y,+0,+2}]

[hoss2006]

Hoss,

Does the DeskCNC software run without the DeskCNC 2nd Generation Controller Board?

Thanks.

Yes, I use the software only.
Hoss

[hoss2006]

Isn't it better to do the amp tests in low speed since in high speed the coils may not reach maximum current? That's why the torque curve goes down with speed.

Also give the axes slightly different speeds so they are not in phase.

Micro stepping sin-cos drive got this kind of current plot in constant speed (image with very fine steps, with 1/8 micro steps there should be visible steps)
http://www.wolframalpha.com/input/?i=Plot[Abs[Cos[x]]+%2B+Abs[Sin[x]],+{x,+-2+Pi,+2+Pi},+{y,+0,+2}]

I tested at 25% speed in the other video and it showed a lower amperage draw than at rapid.
Hoss

[mwood3]

Excellent, I'll have to give it a whirl now.
Don't know if i'll need it actually though.
I ran all 3 axis tonight rapiding at the same time off of the 7.3 Amp power supply and they all went full bore.
The meter peaked at a little over 4 amps draw but as has been said is probably too slow to pick it up.
Think the real test will be during some heavy cutting, that'll be tomorrow.
Videos tomorrow too.
Hoss

im anxious to know the results im just working on a 2 axis conversion right now and if the 7.3A supply will drive all 3 axis no problem this supply would be a substaintial savings over the 12.5A supply you first suggested.

a buddy offered to cut my conversion parts for me on his machine so that will get me going much quicker...

also we just had a tigerdirect.com warehouse/retail store open up 6 miles from my house...awsome supplier of all things PC! Hoss you should add them to your link pages.

KL-350-48 48V/7.3A
110V/230V $59.95

[Khalid]

Hi Hoss,
Just watched your Videos and those are awesome tutorial.. Your version of ATC are also great and the G-wizard are superb.
I hereby come here to say Thanks for sharing so much precious information's to this community...

[hoss2006]

im anxious to know the results im just working on a 2 axis conversion right now and if the 7.3A supply will drive all 3 axis no problem this supply would be a substaintial savings over the 12.5A supply you first suggested.

a buddy offered to cut my conversion parts for me on his machine so that will get me going much quicker...

also we just had a tigerdirect.com warehouse/retail store open up 6 miles from my house...awsome supplier of all things PC! Hoss you should add them to your link pages.

KL-350-48 48V/7.3A
110V/230V $59.95

I ran all 3 axis tonight off of the 7.3 Amp power supply, no problems.
I'll be adding it to the site as a cheaper option, especially if someone doesn't plan on 3D milling much,
though it seems like it would just fine.
I used to go to tiger, found lots of cheaper places since.
Hoss

[hoss2006]

Hi Hoss,
Just watched your Videos and those are awesome tutorial.. Your version of ATC are also great and the G-wizard are superb.
I hereby come here to say Thanks for sharing so much precious information's to this community...

Thanks Khalid, glad you liked them,
can't take credit for G-wizard, that's Bob Warfields baby.
Hoss

[hoss2006]

This is the last Amperage video, all 3 axis are running off of the 48V 7.3A power supply
at rapid speed, various feedrates and under simulated load.
Seems to have plenty of juice for the (3) 570 oz/in N23 motors.
Hoss

[nomedia="http://www.youtube.com/watch?v=ULUjwDM4MiM"]YouTube - G0704 3 Axis Amperage Test[/nomedia]

[hoss2006]

This is the first high speed milling test,
just a first attempt at some counterboring and surfacing.
Up to 200IPM @ .015 DOC.
Made a quick temp chip catcher but it really needs an enclosure to go full bore.
Chips fling everywhere.
More to come.
Hoss

[nomedia="http://www.youtube.com/watch?v=dSA89ubsaZk"]YouTube - G0704 High Speed Milling Test[/nomedia]

[mwood3]

I ran all 3 axis tonight off of the 7.3 Amp power supply, no problems.
I'll be adding it to the site as a cheaper option, especially if someone doesn't plan on 3D milling much,
though it seems like it would just fine.
I used to go to tiger, found lots of cheaper places since.
Hoss

good to know the 7.3A supply will work if i run into problems later I can upgrade and use that PS for the router table.

tigerdirect will be a good option for me due to it being local and on the way to work...their warehouse is huge i think along the lines of 500-700k sqft.

[Khalid]

This is the first high speed milling test,
just a first attempt at some counterboring and surfacing.
Up to 200IPM @ .015 DOC.
Made a quick temp chip catcher but it really needs an enclosure to go full bore.
Chips fling everywhere.
More to come.
Hoss

YouTube - G0704 High Speed Milling Test

Very nice video,.. The DOC in the video seems to be much higher than 0.015.. I think it seems that it is near 0.15..Am i right?
PS:
Sorry, G-Wizard is also a great tool by Bobwarfield...Thanks for corrections...

[hoss2006]

The DOC in the first 2 clips is .375 at 20 and 25 IPM,
the last clip is at .015 DOC and 75 - 200 IPM.
Hoss

[daman]

This is the first high speed milling test,
just a first attempt at some counterboring and surfacing.
Up to 200IPM @ .015 DOC.
Made a quick temp chip catcher but it really needs an enclosure to go full bore.
Chips fling everywhere.
More to come.
Hoss

YouTube - G0704 High Speed Milling Test

The spindle speed seem to drop quite much.
2958 --> 2139
3388 --> 2299
Is this a sign of undersized motor?
The rpm drop increases the DOC. Right?

[diyengineer]

The spindle speed seem to drop quite much.
2958 --> 2139
3388 --> 2299
Is this a sign of undersized motor?
The rpm drop increases the DOC. Right?

Does the rpm drop because it does not have the required TQ or horsepower? shouldn't that stay constant if it had more then the required Horse power for the cut?


LOOKS GOOD THOUGH!!! CONGRATS!

[mwood3]

Does the rpm drop because it does not have the required TQ or horsepower? shouldn't that stay constant if it had more then the required Horse power for the cut?


LOOKS GOOD THOUGH!!! CONGRATS!

I think this is more of a test of the upper capabilities of the mill...those are quite aggressive feeds and DOC's...id be much more suprised if the rpm held steady...

when roughing Aluminum on my G0704 i usually run wide open in high gear go with about 0.050-0.060 DOC and crank pretty fast on the hand wheels...hard to say the feed but id say im close to what Hoss showed on the first clip. I have never seen more than about 20-30 rpm change on mine.

[diyengineer]

I think this is more of a test of the upper capabilities of the mill...those are quite aggressive feeds and DOC's...id be much more suprised if the rpm held steady...

when roughing Aluminum on my G0704 i usually run wide open in high gear go with about 0.050-0.060 DOC and crank pretty fast on the hand wheels...hard to say the feed but id say im close to what Hoss showed on the first clip. I have never seen more than about 20-30 rpm change on mine.

My internet was being slow for some reason and i previosuly had it in a small window. on second watch full-screen wow he was really hauling ass lol and those cuts were pretty dang deep.