5 axis anyone?

New Home Forum Updates 5 axis anyone?

This topic contains 9 replies, has 5 voices, and was last updated by  Jakob A 2 years ago.

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  • #39257

    Derch
    Participant

    Hey guys
    I’m new to the site and cnc

    What brought me down this route is my curiosity for cnc machines. I have 3d printer and that’s what started the whole thing off. With that being said, I would like to make body parts for cars and I think that a 5 axis cnc would be a lot better then a 3 axis. I would like to know if anyone has already gone down this road with this set up. I know control board will have to be swapped out to accommodate a board that supports A and B axis and I would just like to know how they set it up the hardware.

    any info on the subject will be helpful Thanks!

    #39258

    Ryan
    Keymaster

    I can’t imagine how much true 5axis software would cost. Being able to use it is another story.

    If you can find software you could do some hd foam, wood would be a stretch I would think with any reasonable sized bit.

    At this point and time, to do this at home for a reasonable amount of money is a long way off.

    Pocket cnc can do 4 axis (or a true 3, I’m not sure what they call it) I believe, but adding another is extremely complicated.

    We do 2.5D or 3D in two planes.

    Are you sure you have to have 5 axis?

    #39259

    Ryan
    Keymaster

    I can’t imagine how much true 5axis software would cost. Being able to use it is another story.

    If you can find software you could do some hd foam, wood would be a stretch I would think with any reasonable sized bit.

    At this point and time, to do this at home for a reasonable amount of money is a long way off.

    Pocket cnc can do 4 axis (or a true 3, I’m not sure what they call it) I believe, but adding another is extremely complicated.

    We do 2.5D or 3D in two planes.

    Are you sure you have to have 5 axis?

    #39260

    Jeffeb3
    Participant

    The ramps board can support 5 drivers. You’ll just need something other than Marlin. I wonder if grbl for ramps can do that?

    I guess the part I’m missing is what the 4th and 5th axes would look like. I’ve seen the big robot arm stuff, and I’ve seen 4th axis stuff, but most of those are really just replacing the y with a rotational axis.

    Then, as Ryan mentioned, what does the 4-5 axis CAM look like… Not sure on that either. I would guess there are some easy things to do, like rotate a 2.5D design around a cone or something. I could also see just doing 2.5D on different sides. But taking an STL and creating 5D cam seems like magic to me.

    Would you just mount the workpiece on something that pan and tilts the work?

    #39263

    Dui, ni shuo de dui
    Participant

    The ramps board can support 5 drivers. You’ll just need something other than Marlin. I wonder if grbl for ramps can do that?

    I guess the part I’m missing is what the 4th and 5th axes would look like. I’ve seen the big robot arm stuff, and I’ve seen 4th axis stuff, but most of those are really just replacing the y with a rotational axis.

    Then, as Ryan mentioned, what does the 4-5 axis CAM look like… Not sure on that either. I would guess there are some easy things to do, like rotate a 2.5D design around a cone or something. I could also see just doing 2.5D on different sides. But taking an STL and creating 5D cam seems like magic to me.

    Would you just mount the workpiece on something that pan and tilts the work?

    4th axis could be to have the router rotate on a pivot so it could attack the material with an angle (now we are limited to 90degree plunge only).
    5th axis could be to rotate the workpiece itself to get this 4th axis angle available for both X and Y axis planes.
    There are many ways to have 5 axis actually.

    I think it wouldn’t be very hard to do mechanically speaking. But I have no idea how this could be controlled. There are a few boards who are advertised to manage 5 axis, but I’m not sure what software should be used. Theoretically, the Arduino/Ramps, could do it, but not with Marlin firmware. Maybe the high end 3D CAO softs have some plug in for that, I don’t know.

    #39274

    Ryan
    Keymaster

    Once you start rotating an axis the CAM has to be sort of self aware so it doesn’t hit itself.That is what I am getting at. The CAM is difficult, but not impossible, just a lot more feeds and speed to dial in, but only available on really high eng CAM, fusion just released it extra axis capabilities but that might have just been a rotating axis.

    On the machine side of it, you multiply the rigidity needed, that is easy enough to deal with…..but then you also need rigidity in multiple directions. Imagine adding 2 large servos to the end of the z axis and mounting one servo on the end of the other 90 degrees offset and then putting the dewalt on the end of that.

    Awesome, it does exist but without software for it developing hardware isn’t worth it. A $500 router with a $8000 software package.

    #39377

    Derch
    Participant

    So you guys all bring up some good points but from some of the research that I’ve gathered as for as software mach3 support up to 6 axis gcode and using fusion 360 to generate the gcode, I don’t think it’s as hard as we are making it out to be but then a again that’s why I’m here to ask these questions. So as long as we have a control board that support A and B axis I think the only real obstacle I’m seeing I figuring out out where to mount the extra steppers. I’m not to worried on rigidity because I just want it for HD foam and some wood from time to time.

    #39386

    Ryan
    Keymaster

    Mach 3 is control software, repetier can do the same for free as well as just using the LCD. The firmware, I am sure smoothieware has 6 axis support. fusion 360 costs $1500/year to enable 5th axis support.

    Pocket NC is $4k and comes with 1 year of fusion 4″x5″x3.5″ workspace. http://www.pocketnc.com/pocketnc/pocket-nc

    5axismaker is at least $1k more than that and has a xyz with 2 rotary axis on the end, the way that you would have to do it with the MPCNC. Same deal on the software +needs mach 3.

    It isn’t that it can’t be done but the cost of the software that is limiting it. $500 for a cnc and 3x’s that for the software/year is a bummer.

    Why not just flip your part? If you make jigs/fixtures (on the cnc) you can easily do angles as well. Theoretically you can flip it to any angle and achieve extremely similar results.

    #39680

    Derch
    Participant

    Thanks Ryan I hadn’t looked that hard into the software, I’ve got fusion but I never tried getting into those setting. Well… Now I see the major obsticle. Thanks again for your quick response.

    I would flip the part but I would be worried about not getting it aligned perfectly. Once I get my mpcnc put together play around and figure what works best for me.

    #39707

    Jakob A
    Participant

    I think Fusion includes 5 axis CAM in the startup/enthusiast plan now. No idea how to use it though 😀

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