MK1 Steel router build log 1500x800x200

[driftspin]

Yes I agree. Have you decided on one motor or two?

Don't buy any electrics until you have it all drawn up in CAD AM882 or EM806 work well for the drives at 68V

Dear Clive S,

My design dictates at least 2 idler pullys per ballscrew if i want to go single x axis nema 34 stepper... and have the whole bed space.

Or... i have to limit bed space and cross the bed...There is room in the design to do this though.
And 1 side is up against a wall anyways.

When going single stepper,
i think i would buy a wide stepper pully,
and shift the ballscrews a belt width and use 2 belts, 1 for every ballscrew.

For now a 2 stepper x setup looks more convenient from a mechanical point of view.
2 short belts.
lots of bed space

My Electronic pov is opposit.

For inertia it seems, in my mind, better too.
2 powerful 3+Nm steppers on high voltage digital drivers. Instead of a single bigger 8/12nm nema34. this is just a gut feeling , not based on any sound research.

Not sure what makes a 3, 3,1 or 4 Nm nema 23 stepper best choice.
Just high amps low inductance right?



Any thoughts?

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[Clive S]

For now a 2 stepper x setup looks more convenient from a mechanical point of view.
2 short belts.
lots of bed space

That's what I use you can run them 1.5:1 or 2:1 I used 3.1Nm but with 1610 screws motors from https://www.cnc4you.co.uk/Stepper-Mo...YGH301B-Nema23
with am882 drives from China

I do have a nema 23 4Nm on my mill but don't see a difference in them

[Boyan Silyavski]

I would always prefer the mechanical convenience over the electrical...

[driftspin]

I would always prefer the mechanical convenience over the electrical...

Dear Boyan,

Not sure iam really clear what your preference is.

Do you mean use a single motor on 2 belts solution?
Mechanical advantage is :
- Y axis can not get out of alignment easy?
* disadvantage idler pullys

or

use 2 motors and solve alignment in the homing sequence by electronic controls...
- Y axis can be aligned easily that way.
* Some (cheaper) controls dont do gantry squaring sequence.






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[Boyan Silyavski]

Dear Boyan,

Not sure iam really clear what your preference is.

Do you mean use a single motor on 2 belts solution?
Mechanical advantage is :
- Y axis can not get out of alignment easy?
* disadvantage idler pullys

or

use 2 motors and solve alignment in the homing sequence by electronic controls...
- Y axis can be aligned easily that way.
* Some (cheaper) controls dont do gantry squaring sequence.






Verstuurd vanaf mijn SM-A320FL met Tapatalk

if you are experienced with belts, know how to tighten properly long belt, know how to align all components then go with 1 motor and belt system. If you dont have the space, have a suitable controller board, go with motor each side. At the end is a question of convenience.