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  1. #1
    Join Date
    Jan 2014
    Posts
    6

    CNC Plasma 4x8

    Hello!

    I will present my build of a 4'x8' Plasma table. The mechanics is my own design and the electronics is a kit from CandCNC. It uses a Hypertherm Powermax 45 Plasma cutter.

    I have made a CAD model and building instructions which you can find here:
    https://grabcad.com/library/cnc-plasma-16

    The building instructions is also attached in this post

    Attachment 407394

    The mechanics consists of fixed AT5 belts, 25mm wide. The step motors is Nema 23 4,4 Nm (620 oz inch). With a 3:1 belt reduction(HTD3M belt) and a 15 tooth pulley on the AT5 belt, the motion is 25 mm per revolution of the step motor. This was the gearing recommended by CandCNC. The gantry weighs around 40 kg (excluding step motors). The linear bearings consists of TBR16 linear rail along the gantry and v-groove bearings for the gantry motion. The CNC software is Mach 3 on a windows xp computer.

  2. #2
    Join Date
    Sep 2005
    Posts
    287

    Re: CNC Plasma 4x8

    Fantastic job Peter.

    Already have my table built but love to see a great set of plans to think about what I could have done better.

    Thanks very much.

  3. #3
    Join Date
    Jan 2014
    Posts
    6

  4. #4
    Join Date
    Jan 2014
    Posts
    6

    Re: CNC Plasma 4x8

    The X-axis wagon is attached on the gantry:

    Attachment 407728
    Attachment 407730


    The AT5 belt is attached:

    Click image for larger version. 

Name:	IMG_0950.jpg 
Views:	6 
Size:	70.9 KB 
ID:	407746
    Attachment 407734


    The torch holder, mounted on the Z-axis:

    Attachment 407736
    Attachment 407738
    Attachment 407740


    Some testing of the electronics:

    Attachment 407744

  5. #5
    Join Date
    Jan 2014
    Posts
    6

    Re: CNC Plasma 4x8

    Building of table for electronics, plasma etc:

    Attachment 407748
    Attachment 407750
    Attachment 407752


    Almost finished:

    Attachment 407754
    Attachment 407756


    magnetic torch breakaway:

    Attachment 407758


    Limit switches:

    Attachment 407760
    Attachment 407762

  6. #6
    Join Date
    Jan 2014
    Posts
    6

  7. #7
    Join Date
    Jan 2014
    Posts
    6

    Re: CNC Plasma 4x8

    Video of some cutting.


  8. #8
    Join Date
    Apr 2019
    Posts
    3
    We had a similar setup at our lab in university. It's beautiful job you did there.

  9. #9
    Join Date
    Oct 2020
    Posts
    1

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