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Re: Planning and build of my "8020" aluminium CNC Router
Quote:
Originally Posted by
monza
I think the cold drawn steel will help a lot with stiffening up the bed as well if it is well thought out. I am hoping to build it once and use it lots so I think over engineering now rather than a catch up job later will serve me well. are you using the 6 runners on a block style or a different version Tom? Have you used them on all of the axis as well?
The rails were actually surprisingly floppy. The X are 50x6mm section. Y are ~30x6. The Z plate is 210 x 125 x 6. I think I've got Y and Z steel left over if you're interetsted - you're welcome to some / all of it for cost + postage (minus a bit because it's going no-where at the moment!).
There are some pics attached to give you more of a flavour of what I did...
Re: Planning and build of my "8020" aluminium CNC Router
Ah good stuff Tom I need to go visit my local steelholder they are a good set of guys so hopefully they will be able to source me some. If not though I shall take that spare stuff you have and add it to the parts collection :)
These are the linear carriages I am looking at, they are finelineautomation ones and are a nice compact simple unit. I need to change the hole arrangement around to get them to bolt up to my aluminium extrusion for the gantry mount I am thinking of one rolling on the top and another rolling on the bottom of a sheet of CDS or possibly along a sheet of oilon plastic I need to check the rigidity of it but it is a self lubricating HDPE plastic. that should give me a rock solid gantry and hoefully belt driven should be able to shift it's weight around quite rapidly.
http://img.photobucket.com/albums/v4...arCarriage.jpg
http://img.photobucket.com/albums/v4...arriagetop.jpg
Re: Planning and build of my "8020" aluminium CNC Router
Don't know if you already contacted us and this is not really advertising but 80-20 is a US designed aluminium profile system. You would be better off with a UK system such as ours www.valuframe.co.uk which will be "properly" metric.
Re: Planning and build of my "8020" aluminium CNC Router
Hi Frank,
I did, I called the other day not sure if it was yourself I spoke to. I will be pricing it all up to see if I make the minimum order value and then getting some bits ordered up :) is there a metric profile that matches the 8020 spacing wise so I can use some of the stuff the American guys are making?
Re: Planning and build of my "8020" aluminium CNC Router
I plan on using the fineline carriages too, just waiting on mate machining the blanks for me. In general i'm planning a similar build using belt drive and 8020 or similar, so will be interested in following your progress.