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Re: Router Build number 2
I haven't gone far with the design at the moment but wondering about doing something along these line with basically the gantry of a 8x4 machine but with only a 600 wide cutting area.
is it feasible to go with this lay out?
Re: Router Build number 2
Using extrusion will speed up the build immensely. if i am building a small multi function machine for me, thats exactly how i would do it, wider Y and shorter X, so i can use it for bigger jobs.
Re: Router Build number 2
If your wanting high quality surface finish in aluminium then that setup is wrong way to go about it really. Unless the gantry is very heavily built it will vibrate along the long length and affect surface finish. Over building just costs more money so best avoided.
Would be much stronger traveling down the length with nice short stubby gantry.
Re: Router Build number 2
How over built are we talking? the ability to take a full sheet of ply is worth something. If it wasn't the space restrictions I have I would be building a 8x4 machine in which case I guess I would be building the stronger gantry anyway.
I guess the only other way would be to have the gantry going down the length on the raised rails but have it only supported at ether end so a sheet can be passed under it?
Re: Router Build number 2
Dean is right, if you expect perfect finish on aluminum you will have to overbuild like mine build. Ok maybe not so much but simplest will be 2x 100x100x3 box section welded together. Or something in the same range of strength at least. But also have to be fast so you can do HSM with light fast passes. But honestly i dont see how over that span you will go under 100kg gantry at least. My gantry is 180 kg for example with all mounted.
Dont you have now a large machine to do that stuff??
Re: Router Build number 2
my large machine only has a width of 760 and was not really designed for much more than cutting foam fast.
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Re: Router Build number 2
something along these line but I guess the side rails would need to be more over built than this but I'm not sure it would be any better.
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Re: Router Build number 2
Quote:
Originally Posted by
charlieuk
How over built are we talking? the ability to take a full sheet of ply is worth something. If it wasn't the space restrictions I have I would be building a 8x4 machine in which case I guess I would be building the stronger gantry anyway.
Charlie You said cutting Aluminium to high surface finish, ply is different thing altogether. Your first design will quite happily cut ply but aluminium is different matter. The Stiffness required goes up quite lot and to have high quality surface finish it goes to another level. Anything you can do to lessen resonance will help with surface finish so long hollow flexi beams are best avoided.
This means using thick walled heavily braced and stiffened design which opens up complete new set of issues regards ballscrews,servo, controllers etc which get expensive quickly.
If your spaced limited look at building vertical. You'll get 8x4 in the same space as your First machine. Something along the longs lines of this which I'm building at minute thou for high end aluminium I'd change the design slightly and do away with gantry sides.
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Re: Router Build number 2
I had wondered about vertical but it wont help much as I don't have much wall space spare to push up against, certainly for 8x4. I guess I will ether have to go for less quality on the aluminium or for go the ability for full sheets.