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Beefed-up and customized OX build

Discussion in 'CNC Mills/Routers' started by semperfikurt, Feb 21, 2016.

  1. semperfikurt

    semperfikurt Journeyman
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    semperfikurt published a new build:

    Read more about this build...
     
    Evan F, Gasman and Tom Allen like this.
  2. JustinTime

    JustinTime Master
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    Nice build and neat re-purposing those wire gates from Lowes.
     
  3. Julius

    Julius Veteran
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    Sweet!

    Do the X shaped plates on the Y axis really help that much? Tempted to make some, and order some more 65mm M5's to add one to my machine, if it really does anything worthwhile.

    I notice some slop in my Z as well, since it's just V wheel's and causes some witness lines in deep cuts with cheap bits. How much REAL action do you get from it? I need at least 2" for it to be worth thinking of (or can I add smooth rods to the existing design?!)
     
  4. Mark Carew

    Mark Carew OpenBuilds Team
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    Great build updates and mods @semperfikurt These are excellent ideas and they will undoubtedly help many Builders
    Thank you for taking the time to share and post.
     
  5. semperfikurt

    semperfikurt Journeyman
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    As far as performance goes I am not totally sure how much direct affect the braces inside the Y axis rails have. I can say for certain they do make the entire gantry end plate assembly much sturdier by itself though. It keeps all the bolts squared because they are linked together and there isn't as much assembly fatigue from use. I had this problem a lot on my old machine... lots of sagging bolts that loosened up because the holes in the plates didn't provide very much moment resistance.

    Fair disclaimer though, I am no mechanical engineer. I just prefer the "belt and suspenders" approach to things. After all, Why Kill?... When you can Overkill!

    Can you elaborate on your Z axis question a bit? What are you referring to with "real action?"
     
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  6. semperfikurt

    semperfikurt Journeyman
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    Thanks Mark! This project has been going for so long it feels great to finally have stuff for "show and tell." Lots more content still to post though.
     
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  7. Julius

    Julius Veteran
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    I think I was confused that night, but when you have the router up so that the bottom of the collet is on the same plane as the bottom Z plate, how much movement can you get?
     
  8. semperfikurt

    semperfikurt Journeyman
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    I positioned my router in its mount so that the average length of my tools in the collet was the measuring gauge (so extending from the collet about two inches or so). In this case, I can get all of the 4 inches of travel with the tool end, from it being even with the lowest point of the gantry, to touching the surface of the bed with maybe .25" of elbow room in the Z axis travel.
     
  9. Gasman

    Gasman New
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    I'm new to the openbuild community and have been going over a few designs. I really like the way you have compartmentalised everything. Any chance you could share the files for the modified plates?
    Many thanks in advance
     
  10. PeterVB

    PeterVB New
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    The design seems well thought out and well executed. I like the mods to the Z axis. I am currently researching a router build for my own use and would love to see the rest of the content on yours. Do you intend to post it here or have you posted it elsewhere?
     
  11. semperfikurt

    semperfikurt Journeyman
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    yeah I can upload them, I finished grad school and am in the process of moving so lots of things in upheaval right now. I will get those uploaded soonest for you guys!
     
  12. semperfikurt

    semperfikurt Journeyman
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    No I haven't posted it yet, I want to upload the plate files and some more stuff but just haven't gotten to it yet. There are a couple of things I would do differently which I have been marinating on for a bit before posting it all. It's in the process but should be coming shortly!
     
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  13. semperfikurt

    semperfikurt Journeyman
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    Hey just wanted to touch base, i havent been able to get the part files and assembly models uploaded yet, life is still pretty crazy these days but i havent forgotten about you guys! I should have the part files up to share as soon as i can get my computer set up again!
     
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  14. RGUERI1

    RGUERI1 Well-Known
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    NICE WORK
     
  15. walckhome

    walckhome New
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    Nice Build! Hope you get your computer up and running soon.
     
  16. rlev

    rlev Well-Known
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    what software tool chain are you using for your pictures?
     
  17. semperfikurt

    semperfikurt Journeyman
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    I do all of my 3D modeling in Rhinoceros and use the RhinoCAM plugin to generate the cnc programs. For all of my floor plans or topo drawings I basically just pulled linework from my architecture project 3D models and went from there. In order to achieve the different line thicknesses, I adjusted the linework's height in Z by a few thousandths of an inch. The lower the line work the fatter the line (hence more downward pressure on the brush tipped pen.) Run that through RhinoCAM and presto.

    Now the hatched pictures were a bit more involved. I used a Rhino plugin called "Grasshopper." It allows parametric definition and scripting within your 3d models. I essentially created a script that converted an image input file to hatched linework, and then created a single continuous undulating curve from these hatched lines. This way, when I fed that linework into RhinoCAM to generate the cnc toolpaths, it yielded a single toolpath line with approach and retract only at the ends of each line at the edges of the drawing rather than the up, down, up, down, up, down motion I would have had if it was drawing each little dash individually. It saved a truckload of machine time.
     
  18. Emancarrillo

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    Awesome write-up. I was going through the photos and noticed and immediately recognized that KOMO. Cool to see other DAAP grads online.

    Really like the bed concept with the ability to swap out smaller plates as they get dinged up.
     
  19. semperfikurt

    semperfikurt Journeyman
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    Yeah the KOMO is a sweetie. I was working in the RPC at the time so I got all that machine time for free!

    The bed has been an interesting mix of success and failure; there are a couple of problems with it all that I have found through use. The design of it all is not quite matured yet, I think the next iteration of the bed will be the one that really sings. I have been marinating on it for a good while and am thinking about writing all that up, but I haven't modeled it all out yet.
     

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