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Strong? CNC

Discussion in 'CNC Mills/Routers' started by PatrickB, Aug 29, 2017.

  1. PatrickB

    PatrickB Well-Known
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    PatrickB published a new build:

    Hi! Please leave your thoughts about this build!

    Read more about this build...
     
    swohnrade likes this.
  2. Rocrat

    Rocrat Well-Known
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    Patrick , nice design , keep going . Linear rails are always more accurate and can easily be added to your Z axis if using a Cbeam .
    Another thought here , your Yaxis lead screws are out in the open waiting to take an impact from something , you could move them to the other side of the Y plates inline with the linear rails , it will also put the load factor in line with the linear rails as opposed to putting a torque moment on it if off axis with the rails .
    Regards Rat
     
  3. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    Overall nice design. The height of the X-axis will have a negative impact on stiffness. You might consider bringing it down or increasing the thickness of the side plates to reduce the lateral flexibility. Side shields might also be a good idea to keep debris out of the Y-axis screws.

    I've been waiting for someone to give the square steel rail inserts a try. Please keep us updated on progress. :thumbsup:
     
  4. PatrickB

    PatrickB Well-Known
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    Check the updates in my build section!
     
  5. Rocrat

    Rocrat Well-Known
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    Patrick , that looks pretty solid and far more accurate then steel on aluminum . I believe you still should move the ball screw to the outside of your side plates in line with your linears to stop any level arm movement when under load . Like the new design with the plexiglass sides .
    Keep it rolling
     
  6. Julius

    Julius Veteran
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  7. Gary Caruso

    Gary Caruso Veteran
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    great idea! never thought of just adding square stock to the v-rail. One thing i would suggest is that you probably don't need to double up the wheels like we do with the plastic ones.
    I've seen very large cnc machines use steel V-wheels and have only one at each corner and no problems.. steel on steel is much more firm than aluminum to plastic, but either way it wont hurt.
     
    Joe Santarsiero likes this.
  8. Barry Danks

    Barry Danks Veteran
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    I've been designing a cnc using W rail from Igus. What size were you thinking? The round rail is much better IMO
     

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