I'd make the gantry sides 20mm thick, and make the gantry beam 1 single beam rather that two separate extrusions.
I built a shapeoko about a year ago, but after redesigning parts over and over again for improved performance i realized it might be better just to build something new.
On ebay i found a bunch of rails and ballscrew, 540 dollar including shipping for:
2 x 800mm, 2 x 700mm, 2 x 300mm SBR20 supported rail
2 x 825mm, 1 x 725mm, 1 x 325mm RM1605 ballscrew.
12 x bearing blocks
4 x ballnut
4 x ballnut block
4 x BF12 bearing block
4 x BK12 bearing block
4 x 10mm - 6.35mm flexible coupler
Based on this and a few designs i found online i started designing.
I came up with the following:
I'll have 90 degree brackets below the wooden bed to support the 30x60mm extrusions, these are not in the model yet.
Is there anyone that could give me some feedback on the design?
The black panels will be 10mm aluminium plates. Is this thick enough?
Are there any (other) weak spots?
Any help will be appreciated!
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I'd make the gantry sides 20mm thick, and make the gantry beam 1 single beam rather that two separate extrusions.
Gerry
UCCNC 2017 Screenset
[URL]http://www.thecncwoodworker.com/2017.html[/URL]
Mach3 2010 Screenset
[URL]http://www.thecncwoodworker.com/2010.html[/URL]
JointCAM - CNC Dovetails & Box Joints
[URL]http://www.g-forcecnc.com/jointcam.html[/URL]
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)
Nice looking machine. Just looking at it. Not knowing dimension I thought the cross rails should be taller, I also wonder about moving the rails from the front of cross members to the top of each cross member.