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Pure Cbeam 900x1000

Discussion in 'CNC Mills/Routers' started by James Hayes, Dec 1, 2016.

  1. James Hayes

    James Hayes Well-Known
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    James Hayes published a new build:

    Read more about this build...
     
    jamesdjadams likes this.
  2. evilc66

    evilc66 Master
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    Looking good, but it doesn't look like you have much in the way of ventilation in the electronics box (unless I can't see it). Ideally, you need some airflow over the drivers to make sure they don't overheat under high loads, and the power supplies really should have a source of fresh air for the cooling fans to do their job.

    Either way, should be interesting to see where this goes.
     
  3. James Hayes

    James Hayes Well-Known
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    Its still being worked on. I have 4 80MM fans Im going to put into the lid to remove heat. Both PSU also have their own cooling fans which should move some air about in there as well. These 5056 digital drivers so far dont seem to get hot. Ive ran them for 10 and 12 hours solid and barely warm to the touch. They also have huge heat sinks on them as well.
     
  4. evilc66

    evilc66 Master
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    Cool (figuratively and literally ;) ). Any and all airflow will help those drivers live a long and happy life though.
     
    James Hayes likes this.
  5. Holy1

    Holy1 New
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    Hi, where did you get your 1.5kw spindle
     
  6. Florian Bauereisen

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    Hi,
    i would strongly advice you to lower your x as far as your realistic minimum. Every mm actually counts.
    How often will you need to machine extremely thick material? realistic? if the real thick pieces not being of aluminum it is better to slice them and simply glue together the layers after.
    Long levers being the enemy of stiffness - while stiffness is the utmost important design point in a cnc.
    2mm of deflection?:nailbite::nailbite:
    Deflection on a cnc is measured in 0,0xx mm/per 20kg on the fully extended z on a long bit to simulate cutting forces.
    In the end you should get outcomes of dozens of N/micro-mm not couple of N/mm. at least a factor of 100!!:eek::eek:

    like here:


    A wobbly mill like yours will hardly do any aluminum at all, i recon you will struggle even in hardwoods..
    Just try saving you some grief.
    If you leave your posts tall you could always remount up high if needed once in your lifetime to do some extremely thick foam....

    Cnc is a wonderful hobby .. but can get frustrating if something does not work out... there is enough to go wrong to keep you busy ... so getting the basics right helps a lot,:D

    greets

    flo
     
    GrayUK likes this.

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