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Type: Posts; User: stef110

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  1. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Steel laser cutted parts should be delivered...

    Steel laser cutted parts should be delivered tomorrow.
  2. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    Not that much off an update, this weekend managed to get x and y axis to move. First i made 2 anti backlash nut holders there are 2 nuts in it pressed outwards with springs. To eliminate backlash...
  3. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    Some fine adjustments was needed to align the bold holes of the column. XD
  4. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    This weekend managed to finish mounting the column rails and spindle mount.
    There went something wrong with the epoxy leveling so one of the rails i needed to sand to size to make the 2 rails...
  5. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    Today the spindle servo arrived, dammmmm that thing is huge bigger then i had imaged.
    Its a 3,7kw servo with a max rpm of 12000 and it can peak to 5,5kw Will be enough i guess for my small...
  6. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    Today i fully mounted the slave rail, seems there was a small high spot on the end of the epoxy after sanding that down i get my rails flat with about 0.01mm now.
    After mounting the rails i mounted...
  7. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    Started this morning with mounting the y rails to see how the epoxy turned out. After some measurements it seems the rails are on an angle now over a length of 500mm they move 0.04 from each other. ...
  8. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    Those holes where only there to hold the steel bars inside the mold during casting. I now screwed in a grub screw and poor just on top of it.
    The holes for the rails it self i will drill later when...
  9. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    Yes just to make sure the bottom of the column is strong enough. Not sure if it will help the strength but i let me have a beter feeling...

    Last night i started on the rail leveling experiment for...
  10. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    Today the base have been casted, total of 258kg of silimix and 28,5kg epoxy. Its about 7kg less then what went in the base.
    Now while its curing i can start on leveling the rails on the base of he...
  11. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    I really like to keep you guys updated with pictures also for my self so i can look up later and see my own progress.
    About the mold, the 2 tubes are just for cables and coolant hose. The cutout in...
  12. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    This weekend made the mold for the column, this week i want to wax it and put the PVA coating on and then try to have it casted on Thursday and if all goes well i can have it baked on Sunday already....
  13. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    This weekend machined the steel inserts for the column. Hope to start building the mold next weekend and have it casted in 2 weeks from now.

    Stef
    ...
  14. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    Yes it will be powering a bt30 spindle which is limited to 6000rpm but maybe in the future i will change the spindle to higher rpm.

    Stef
  15. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    Can we end this endless discussion about epoxy will be fine enough or not. It will be my choice and my decision is made.

    Didn't make a lot of visible progress last week. Today i moved the base to...
  16. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    Im pretty sure the epoxy will be way good enough for me. I gone use the DWH 310FL.
    Don't forget its just a hobby machine and in any case it will be way better then my current machine and i don't...
  17. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    @ Mactec54
    If you gone pay the transport and the machining i would really like to do it that way...

    I know machining will be the easiest way and the best way but those parts are to heavy to move...
  18. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    No the X saddle will be just steel like it is now.

    The base now have been baked for 26 hours at a max temp of 55 degrees in the end. Now it will be waiting on some measuring devices and epoxy to...
  19. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    This week we finished building the base frame. Today give it a little paint job and put base on top of it. To make the picture complete also put the X axis on top of the base and damm it looks...
  20. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    This evening we flipt this 350kg beast. And pulled off rest of the mold. Amazing how it all turned out i never expected to be this smooth.
    Next thing to do is the frame, then lift this beast on the...
  21. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    This weekend i want to build the frame where it gone stand on.
    Im still struggling with column design mostly because im not sure how i want to do the head. After this casting i really think i can...
  22. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    This afternoon i carefully try'd to brake away the mold, Im super surprised how easy it went The release agent did a super good job.
    The thread inserts came out super nice, cant wait to turn this...
  23. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    Finally its done it took 4,5 hours of mixing stamping and vibrating to complete the mold. In it there is now 265kg of silimix and 29,5 kg of epoxy separated in 11 mixing batches.
    Now its time to...
  24. Replies
    81
    Views
    2,254

    Re: Large Epoxy granite VMC building

    That spindle looks delicious :D looking forward to the rest of your build.
  25. Thread: Concrete VMC

    by stef110
    Replies
    137
    Views
    6,950

    Re: Concrete VMC

    Still few things to do so i hope i can have this beast casted at the end of next weekend.
    ...
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