Welcome to Our Community

Some features disabled for guests. Register Today.

Sign Up

1500x1000mm Adjustable Height

Discussion in 'CNC Mills/Routers' started by JerryD, Jul 9, 2017.

1500x1000mm Adjustable Height

1500x1000mm Adjustable Height

Discussion in 'CNC Mills/Routers' started by JerryD, Jul 9, 2017.

I have the demand to cut/etch tall pieces of material. For this reason, I have designed a machine with 500mm uprights with adjustable gantry height. This way I can raise/lower the sled and z-axis as needed. I've also chosen to use a linear C-channel assembly for the Z axis with the plate mounted to the gantry instead of the other way around. This will allow for maximum range of the z-axis. The parts list/BOM does not include motors/belts/pulleys or electronics.

V-slot 20x80 extending height 1000x1500mm large cnc build
  1. JerryD

    JerryD New
    Builder

    Joined:
    Jun 26, 2017
    Messages:
    8
    Likes Received:
    0
    JerryD published a new build:

    Read more about this build...
     
    #1 JerryD, Jul 9, 2017
  2. Anthony Bolgar

    Anthony Bolgar Journeyman
    Builder

    Joined:
    Jan 14, 2016
    Messages:
    354
    Likes Received:
    198
    I would look at getting some custom plates made to attach your tall gantry supports with. The way you have it designed there is going to be an incredible amount of deflection when it is raised up to the higher levels. Just a thought for you :)
     
    #2 Anthony Bolgar, Jul 9, 2017
  3. JerryD

    JerryD New
    Builder

    Joined:
    Jun 26, 2017
    Messages:
    8
    Likes Received:
    0
    Thanks for the input Anthony. This did cross my mind and I am still slightly concerned about it. Do you think using C-Beam instead of the V-slot for the gantry sides would help? Once it's built I could attempt to cut gantry plates myself, if it has enough precision of course.
     
    #3 JerryD, Jul 9, 2017
  4. Anthony Bolgar

    Anthony Bolgar Journeyman
    Builder

    Joined:
    Jan 14, 2016
    Messages:
    354
    Likes Received:
    198
    The issue is the plates that connect to the rails, the wider the plate, the more stable it will be. Cbeam would help, but not sure if that is enough.
     
    #4 Anthony Bolgar, Jul 9, 2017
  5. Anthony Bolgar

    Anthony Bolgar Journeyman
    Builder

    Joined:
    Jan 14, 2016
    Messages:
    354
    Likes Received:
    198
    A good rule of thumb is that for every 2" in height you would want at least 1" in width for the connecting plate. But the wider the better.
     
    #5 Anthony Bolgar, Jul 9, 2017
  6. JerryD

    JerryD New
    Builder

    Joined:
    Jun 26, 2017
    Messages:
    8
    Likes Received:
    0

    I See - with that math I would need a plate thats ~9.5" wide (500mm = roughly 19 inches /2 > 9.5) without accounting for whats lost on the gantry plate and thickness of the C-Beam.

    At that point I should just go with something like this right? (picture attached)
     

    Attached Files:

    #6 JerryD, Jul 9, 2017
  7. Anthony Bolgar

    Anthony Bolgar Journeyman
    Builder

    Joined:
    Jan 14, 2016
    Messages:
    354
    Likes Received:
    198
    Thats the idea
     
    #7 Anthony Bolgar, Jul 11, 2017

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Accept Learn More...
    Dismiss Notice