Thread: Two ball screws for my x axis and two motors, do i need two drivers?

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  1. #1
    OK my cnc machine is well on it's way

    I do have a question

    I am using two ball screws for my x-axis and two motors

    so my question is this

    will I need two drivers for this and then if so where can I get a 5-axis system kit from under two hundred & seventy pounds?

    like this but 5-axis
    http://www.diycnc.co.uk/html/cnc_systems.html

    is it cheaper to buy the breakout board and drivers and make it my self

    will I need two power supplies and break out boards?

    what cables do I need?

    this is getting confusing as I don't do electronics :confused::confused:

    James & Luke

  2. #2
    Definately two drivers with two motors. It's theoretically possible to do it with one ... but don't go there!

    Those drivers are not very good at all - only 27 volts. You should get at least 50V, or 75V. That will be more like 200 for the drivers and something for the breakout board ... there's a cheap 5-axis one on eBay.

    One breakout board will suffice, unless you run out of inputs later on. You just need as many power supplies as required to get sufficient power to the motors. I used a 500VA, 75V (when rectified) transformer for 4 motors ... it's ok on 5 too.

    CY, 4-core cable 1.5mm^2.

    Don't worry about the electronics, I'm sure I/we can assist...

  3. #3
    ok Jonathan where do i order the drivers from

    James

  4. Divers from http://www.slidesandballscrews.com and try this one PM752 Microstepping Driver

    Transformer and electronics from http://uk.farnell.com
    At least I bought there :)

  5. The Following User Says Thank You to wiatroda For This Useful Post:


  6. #5
    PM754 from Zapp is good - that's where I got them, but now there's cheaper available on eBay:

    http://www.ebay.co.uk/itm/5-2A-70V-S...0#ht_763wt_905

    http://www.ebay.co.uk/itm/4-Axis-Ste...#ht_4174wt_997

    http://www.ebay.co.uk/itm/3-Axis-CNC...#ht_2915wt_905

    http://www.ebay.co.uk/itm/CNC-Steppe...#ht_3679wt_905

    (those are not necessarily the cheapest, so do have a look yourself)

    Transformer: Farnell good, eBay better if you're lucky...
    I've got some capacitors / bride rectifiers so if you do get a transformer I can sort the rest of the bits.

  7. The Following User Says Thank You to Jonathan For This Useful Post:


  8. Quote Originally Posted by Jonathan View Post
    PM754 from Zapp is good - that's where I got them, but now there's cheaper available on eBay:
    cnc-parts4u I'm preety sure that's Zapp in another incarnation :)

  9. #7
    Quote Originally Posted by wiatroda View Post
    cnc-parts4u I'm preety sure that's Zapp in another incarnation :)
    Suspiciously similar isn't it. Sill not the cheapest in England for drivers. Can't fault them on their service though.

  10. #8
    I think I'm going to buy this set up as it has two extra drivers (spare or extra axis if needed)

    http://www.ebay.co.uk/itm/6Axis-CNC-...#ht_3337wt_905

    but still unsure if it's the right think to buy

    James

  11. #9
    it is the same, I've ordered steppers from Ebay and asked if i could have something from Zapp as well but it was out of stock!

    Get some pics up mate!! I wanna see a proper build log to base mine on! :P

  12. #10
    Quote Originally Posted by luke11cnc View Post
    I think I'm going to buy this set up as it has two extra drivers (spare or extra axis if needed)

    http://www.ebay.co.uk/itm/6Axis-CNC-...#ht_3337wt_905

    but still unsure if it's the right think to buy

    James
    Good find - they are the right thing to buy. It would be interesting to compare them to the PM752 - theoretically they should work just the same on 75V, but you never know.

    Optoisolated breakout board with drivers that are already isolated can cause problems if you don't wire it right. Don't worry about it though, I'm sure it'll be fine.

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