Sturdy and Fast all Steel CNC , my first build

[ba99297]

I have no words
Excellent job
And one more time i want to say that Deans help , your ideas (about frame),Jonathans calculator, and Eddys suggestions drive me along this long trip that called cnc building. Thanks again.
One question
Are you using servos or steppers?

Thanks
Vagelis

[Boyan Silyavski]

3 NM steppers from Zappautomation coupled with AM882 drivers , driven by 650w Toroidal Psu at 70VDC / 2×50v rectified by power regulator board with 4 big capacitors that gives 70VDC at the output/.
Old Dell PC 2.8Ghz with 512 Ram, stripped reworked and hacked to be extremely light and fast + stable version of Windows Server 2003, 25khz Mach3, 1/8 microstepping, 4.2A motor selected by jumpers on AM882.
Deflection at any part of the machine at any direction less than 0.00mm under 100kg load/me/
20t HTD 5M Pulleys, 270mm belts 15mm wide. 1610 screws on all axis, 1605 on Z, 1:1,
Velocity 10m per minute,acceleration 800 at the motor tuning in Mach 3.
Temperature of motors at X and A 55 Celsius, at Y and Z 35 Celsius, when here 30 Celsius.

[Boyan Silyavski]

Yes, Dean and Johnathan are the guilty ones that all went that good. Not only them but all who criticized the initial design and followed the build which inspired me when I was tired. Great Forum. I bow to all the wisdom here.

[GEOFFREY]

Once again, brilliant. Not one of the advisors, but an enthusiastic onlooker!!! G.

[mitchejc]

Wow congrats Silyavksi that's a great looking machine!
If I may ask: Was it very difficult to align the top and bottom rails to get them parallel in the Z direction? Did you just epoxy cast the top and then bottom from the same level surface and the two rails were aligned or did you have to perform other magic tricks as well?

[Boyan Silyavski]

Wow congrats Silyavksi that's a great looking machine!
If I may ask: Was it very difficult to align the top and bottom rails to get them parallel in the Z direction? Did you just epoxy cast the top and then bottom from the same level surface and the two rails were aligned or did you have to perform other magic tricks as well?

Thanks!
read please post #93 , point 1 to 4, especially 4

It was a lot of thinking but once i figured the correct steps how to do it, it was easy. You will need a straight edge though, long enough that can lay on both long axis rails perpendicular. + Big enough square. Without that its not possible to align the machine correctly. Both can be obtained for around 100euro and this is money well spend. the links are somewhere in the thread.

[GTJim]

silyavski, this is a very impressive build. Thanks for sharing.