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C-beam Machine - Modesty

Discussion in 'CNC Mills/Routers' started by linmag, Feb 2, 2018.

  1. JustinTime

    JustinTime Journeyman
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    That thing must weigh a ton, literally! :ROFL::ROFL::ROFL:

    Looks good, though! :thumbsup:
     
  2. linmag

    linmag New
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    A small update, the mounts (6 of them in total) to bolt the machine to the granite slab is done. The machine feels rock solid now.
    [​IMG]
     
    GrayUK likes this.
  3. MTO

    MTO Well-Known
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    I love the granite, but I wonder: you can buy granite slabs that are sold as flatness references. Is this that flat? Or is it just normal flat?
     
  4. linmag

    linmag New
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    No, it's not that flat. It's grave stone flat
     
    GrayUK likes this.
  5. joe williams

    joe williams Well-Known
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    Nice looking build...like the hand drawings!
     
  6. Pedro Melim

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    How much spacing you have from the cbeam gantry to the alluminium plate and from the linearing bearings to the plate? Im planing on buying a c-beam but wanna make it more rigid build plate and max out build space, and this linear rails are an option.
     
  7. linmag

    linmag New
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    Hi,
    I'm measuring the maximum Z travel to 95 mm. The spacing between the plate (10 mm thick) to the gantry is however greater at 130 mm, this since the Z axis protrude below the gantry.
    For the plate to clear the stepper motor I will need to add a spacer above my linear bearings of the thickness 15 mm (that spacer is taken into count in all of the above measurements).

    Also, I have 50 mm higher gantry than the kit comes with (300 mm).

    Hope this helps
    Magnus
     
    #37 linmag, Oct 9, 2018
    Last edited: Oct 9, 2018
  8. linmag

    linmag New
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    Hi all,

    The workshop that I use for building my machine is temporarily moved to another facility (and my machine could not come along due to lack of space), so I will not be able to complete my build right now.
    I'll have to wait until the original workshop re-open (as of right now it's scheduled for Septeber 2019).

    However, I have sourced some aluminum 20 mm thick, that I will use as spacing blocks on top of the SBR16 carriges to be able to let the working table pass above the Y stepper motor. Hopefully I will be able to complete these and fully mount the working table before the workshop that I use closes.

    During the down time, I think I will spend some time with testing the control part of the build, and making drawings of the enclosure and electronics box. Hopefully I'll have everything sorted in time for the reopening.

    / linmag
     
  9. linmag

    linmag New
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    Okay, I choosed to move my machine home where I have a small space to be able to continue my build. I will miss all the fancy tools, but will at least progress.

    During the move the stone was really heavy to lift, so I wheight it. 110 kg! Without the router on top...

    Here is a picture of the new location.
    [​IMG]
     
    GrayUK likes this.
  10. GrayUK

    GrayUK Openbuilds Team Elder
    Staff Member Moderator Builder

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    Come on linmag. Let those chips fly!!! :thumbsup::thumbsup::thumbsup:
    Merry Christmas :D
     
  11. linmag

    linmag New
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    I have uploaded a DXF with the extra plates that I waterJet cut to the files section.
    IF anyone would like to copy those I would double check if everything seems to be correct, sice I draw them in Inkscape and exported to dxf, and I would not trust that entirely (I did cut from that export though). I have tried and open the dxf in F360, and at least it opens :)

    The first three ones are for stiffening the gantry, the corner bracket a bit bigger since I use 20x80 in the sides in the frame. And then the enlarged stepper mounts (to be able to have 4 mounting screws on the steppers). You can see that one is a tad smaller, giving me a little more Z-height.
    [​IMG]
     
  12. linmag

    linmag New
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    So a little update on the machine build.
    I have been side stepping a bit, and needed to finish some other builds to be able to come further in this build.
    First I have buildt a stable table for the machine to sit on as cen be seen in picture below.
    [​IMG]

    Then I decided to buy square rail for X- and Z-axis, which made me to redesign how the lead screw nut should be attached.
    [​IMG]

    I saw the need for a mill or lathe, and I did finish my restoration of my old micro lath/mill combo (Unimat SL - picture below).
    [​IMG]
    [​IMG]

    Then I made the parts needed (I have made them so that I can easily get to the nut to adjust it if needed), as can be seen in the pictures of design schetch and finished part.
    [​IMG]
    [​IMG]
     

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