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Type: Posts; User: Buoyen

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  1. Replies
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    Re: Milli a new composite mill kit

    Good find Peter.
    The bolts joint will be interesting to see.
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    Bridge mill z axis way cover

    Trying to find inspiration for how to do the way cover for the z axis on a bridge mill.
    Can't really find good pictures of the cover.

    The bridge mill will typically have very little space beneath...
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    Re: Yet another epoxy granite mill

    This looks amazing
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    Re: Milli a new composite mill kit

    Agree

    Compare the UMC350 HD vs the non-HD and there are big differences in both speed and torque capabilities
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    Re: Milli a new composite mill kit

    That is great.
    I was just going to mention it that it seems many think slower speeds are also okay. And that opens up som opportunitets when it comes to building the rotary.

    This is a Hermle C22...
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    Re: Milli a new composite mill kit

    Yes of course. For some the increase in productivity justifies an increase of 5x in the price of the machine.
    And of course many are doing really high end high speed manufacturing in 5 axes and do...
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    Re: Milli a new composite mill kit

    The new Haas 350 HD has a max speed og 100 deg/sec for B and 80 deg/s for C.
    DMG, Hermle or Kern might be in a different league. But I guess higher speeds are mostly (in the real world) only for...
  8. Re: Project Frankenmill: Sieg X3+Tormach 770 Spindle Head

    Looks perfect :D
  9. Thread: Design Concepts

    by Buoyen
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    Re: Design Concepts

    No not me :)
  10. Thread: Design Concepts

    by Buoyen
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    Re: Design Concepts

    Inspiration

    This kit was up for sale here for 4k USD

    Somebody got themselves a nice project :)

    Got a good look at the frame here.
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    Re: Milli a new composite mill kit

    Bearing blocks dont have anywhere near the same stiffness as solid steel. So to get decent results on this analysis you need to model the correct stiffness at that point.
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    Re: Fullmida 'diy' VMC4020

    What are the travels on this kit? How large is the table? Looks good.
  13. Replies
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    Re: Design & Build of Frankenrouter

    Looks like they recomment 24k rpm and 800mm/min for 6mm WOC and 6mm DOC for their shortest 6mm bit.

    That is 0,033mm/tooth. So maybe just start there with less DOC/WOC and increase as much as you...
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    Re: Design & Build of Frankenrouter

    I think it is better to start below the recomended load (maybe 50% of the recommended chip load for the cutter you have).
    A router is not as rigid as a VMC so can not do similar chip load.

    When I...
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    Re: Design & Build of Frankenrouter

    Your router looks very nice! Good job!

    I would start at half of that chip load and increase from that.

    If it's a quality carbide cutter you can go full rpm on a 6mm bit. But it needs...
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    Re: 800Hz Spindle vs 400Hz VFD

    I see you have the WJ200 VFD and it has parametres for tuning.

    About 4-pole vs 2-pole.
    Historically you could buy motors with two sets of terminals. 1 for 2 pole operation and 1 for 4 pole.
    With...
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    Re: 800Hz Spindle vs 400Hz VFD

    I have not read everything in detail, but here is a suggestion:
    I think this comes down to VFD tuning.

    The motor will run at 10A no problem for a SHORT time with out overheating (thermal inertia)...
  18. Thread: About to quit

    by Buoyen
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    Re: About to quit

    I have the same problem with UCR201

    There should be a fix for it, but I have not tried. Check this: https://forum.cncdrive.com/viewtopic.php?f=3&t=3598&start=10
  19. Thread: Design Concepts

    by Buoyen
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    Re: Design Concepts

    Cool. Didn't read it all, but it seems there is a significant difference from an uncompensated system.
  20. Thread: Design Concepts

    by Buoyen
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    Re: Design Concepts

    Could a simple solution to your temparture stabilizer be to cool the ball nut mounting block and the end bearing blocks on the screw (maybe one of them is enough) ? Those are stationary parts you...
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    Re: Designing a new router called Brevis-HD

    The thing is most hobbyists dont do 1.5kW cuts with their 1,5kw 24k spindle.

    You need the power capability (current capability) so you have enough torque at lower rpms. But with smaller...
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    Re: Perfect combo of rails and ball screw

    If you can locate a machine shop within driving range I think they'll cover what you need. But if you don't want to order a 6m/12m piece of steel you might need to adjust your plan to the dimension...
  23. Re: Reasonably Rigid Router (RRR) - a cautionary tale (likely) in the making.

    This looks very good. Glad to hear the parts are still straight. I think it helps that you have big cross sections relative to the amount of material removed.
  24. Thread: Design Concepts

    by Buoyen
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    Re: Design Concepts

    Can't you make the gap wider?
    Is there any gap on the front side?
  25. Thread: Design Concepts

    by Buoyen
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    Re: Design Concepts

    I don't really understand your model. Is the chip tray the sheet metal beneath the table with a very tiny gap on the sides?
  26. Replies
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    Re: Designing a new router called Brevis-HD

    Looks very nice!

    If you made this base narrower and filled the space between the brackets in the sides and bottom with epoxy granite you would have a stiff and damp base for milling metal.
  27. Thread: Design Concepts

    by Buoyen
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    Re: Design Concepts

    Thanks :)

    Yes I guess a 30 taper is more than sufficient for what i want to do.
  28. Thread: Design Concepts

    by Buoyen
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    Re: Design Concepts

    Yes

    Great thread btw :)
  29. Thread: Design Concepts

    by Buoyen
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    Re: Design Concepts

    I'm thinking regular HS machining and enough low end torque to do face milling.

    Is it worth paying more for HSK40 vs ISO30?
  30. Thread: Design Concepts

    by Buoyen
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    Re: Design Concepts

    For a machine like this. What is your feeling about spindle taper and power.
    I asked Olispeed about their SAB150 with HSK63, but at 8500 euros it's a bit expensive.
    And HSK63 is expensive tooling....
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