Thread: 1200mmX900mmX170mm 4axis cnc
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03-05-2017 #1
Hello everyone.
This is Nick from Greece.
I am looking forward to build my own cnc and to avoid the most mistakes that will cost me money, time and mental brakdown!
Althought I am a member at other cnc forums,I choose to post here my attempt for some reasons that I will prefer not to analyse right now.
Sooo, I am planing to build a cnc with the dimensions I wrote above.Steel frame and bench, I am planing to combine welds and screws for the bench since my workshop is small and I will have to build the machine outside the workshop and disassembly it and reassembly it again in the working area, this will also be a one man build , so this way it will be a little bit better for me to relocate it.
The cnc will be used most for wood working, guitar building, etc and I will be pleased if it will be rigid and accurate enough so I can cut aluminum parts.
Caution My cad abilities are awful,lol, prepare your eyes!!!
CAd program I use is Rhino 4 and Vectric Aspire 4 for cam.
Thanks everyone for taking the time to read and special thanks to everyone that will participate to that attempt!!!
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03-05-2017 #2
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03-05-2017 #3
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04-05-2017 #4
Hi Nick,
I'm still learning, but some of the best bed frame designs I've seen have a bed which attaches to the legs with screws, so you can change the height of the bed, or swap it out for a different one in the future. The other thing I thought was quite sensible would be room at the front and sides for sliding large pieces in underneath to work on their edges - looks like you've hit the nail on head already for that one though!
Hope that helps!
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04-05-2017 #5
Hi Andy.
Somehow I miss your post earlier.
Thanks for the comments, I read other's guys threads here and I am stealing ideas, I hope this is not inappropriate. :-).
Something I forgot to mention is that at the one end of the bench ,that is at a lower lever is for the rotating axis.Last edited by Nickhofen; 02-08-2017 at 04:10 PM.
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04-05-2017 #6
Any thoughts about the design and the dimensions of the steel tube I use?
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04-05-2017 #8
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02-08-2017 #9
Hello !
I think you (or me) has misunderstood..
The bearings on x axis your long axis should be wider preferably so that the tip of the cutter is between them when viewing the machine from the side.
The y axis bearings on gantry can be closer.
If you use 90x90x4 steel with no welding, how will you close the ends to be able to bolt there?
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02-08-2017 #10
How close can be the bearings on the gantry so I can have good accuracy and eliminate the tolerance when torgue applied on Z axis ?
The ends of the tubes is going to be welded with steel flanges, I prefer minimum welding for minimum stress and to be able to adjust- align everything.Last edited by Nickhofen; 02-08-2017 at 09:54 PM.
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