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Strong? CNC

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

Strong? CNC

Strong? CNC

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

The goal is to have a relatively strong CNC to be able to cut alu. Working space will be around 800x350x100mm.

strong CNC metal v wheels igus
  1. PatrickB

    PatrickB New
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    PatrickB published a new build:

    Hi! Please leave your thoughts about this build!

    Read more about this build...
     
    #1 PatrickB, Aug 29, 2017
    swohnrade likes this.
  2. Rocrat

    Rocrat New
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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
     
    #2 Rocrat, Aug 29, 2017
  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:
     
    #3 Rick 2.0, Aug 29, 2017
  4. PatrickB

    PatrickB New
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    Check the updates in my build section!
     
    #4 PatrickB, Sep 6, 2017
  5. Rocrat

    Rocrat New
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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
     
    #5 Rocrat, Sep 6, 2017
  6. Julius

    Julius Well-Known
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    #6 Julius, Sep 7, 2017
  7. Gary Caruso

    Gary Caruso OpenBuilds Volunteer
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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.
     
    #7 Gary Caruso, Sep 10, 2017
    Joe Santarsiero likes this.
  8. Barry Danks

    Barry Danks Well-Known
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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
     
    #8 Barry Danks, Sep 22, 2017

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