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
Any thoughts about the design and the dimensions of the steel tube I use?
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04-05-2017 #7
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 #8
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05-05-2017 #9
Hi, May I ask what rails/tracks/guides you are using and what is the method of attachment? What do you want to cut?
The span of the section is where you need to pay attention. Mass/stiffness can be your friend.
Welding can be you enemy with shrinkage and distortion. The 50 x50 x3 might be used for bracing , but the main rail support might be stiffer with 75 X 50 X 5.0 RHS.
Tool load and weight of the material you are cutting will also dictate frame material properties. Sorry not many answers and a lot of questions.
Paul
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05-05-2017 #10
Hi Paul, thanks for your participation to this thread.
Rails I am planing to use HIWI linear square rails, attached with screws .
I am planning to cut wood mainly and I will be glad if the machine can cut aluminum also,I know that I can not have a cnc that can do both works well, so the main purpose is to build a cnc foe woodworking-guitar building.
Thanks for the input about the main rails, i will use it at my upgrate workbench design.Last edited by Nickhofen; 09-05-2017 at 03:58 PM.
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