Steel frame cnc router design/build

[CraftyGeek]

Ok - design progress time.

I've been focusing on the frame/table so far - its now at a stage where i'm pretty happy with it & I think i've added everything that I meant to.

red = 60x60x4 box
blue = 50x50x3 box
green = 60x4 flat bar
orange = 50x4 flat bar

Rails are sat on 50x10 ally flat.

Ignore the floating guide leadscrew for now - its just there as a vague reference as to where i'm planning to put the leadscrews at the moment. Also ignore the holes going through the outside of the legs, they won't be there when I make it.

The frame has the ability to be adjusted for square in every direction. The cutting surface can be positioned in 5cm increments down the legs.
Both the lower surface & cutting surface will be covered in mdf added further bracing.

Hopefully this will mostly get nods of approval so i can move on & start thinking about leadscrews, motor mounting & the gantry in more detail.

[JAZZCNC]

Ok looking much better.!! . . . Take it you have decided not to weld.? If so Not saying this is bad thing if that's what your most comfortable with but will be a lot more work and maintenance. Mixture of both works best IME.

Only thing I see and question is DO YOU really need that much adjustabilty of the bed.? If not then I'd raise the lower frame and increase the triangulation. Will just help stiffen the frame a little.

Crack on.!!

[CraftyGeek]

There are still welds in there - I think I need to see how I get on with the welding to see how accurate I am with it...then if I feel confident enough, i'll drop more of the bolts & weld instead (like the table surface). I do want to make it so that the whole frame can come apart into manageable sections for moving house etc in the future.

Regarding the height adjustment - I don't know is the short answer...I've seen that others do it & it might be useful for me at some stage - but I don't have any examples in mind. In reality I probably don't need that much. I'm also still playing with the overall dimensions a little - so i'll still be tweaking for a while.
The frame at the moment should be a decent height for me to work at - i'm conscious of making it too low & giving myself back issues (which I get from time to time)...more cross bracing can be added at a later date easily enough.