steel cnc build 300cm*200cm for marble startup design

[yasser]

Well it looks good but there are a few things I would comment on.

3500mm is a mighty wide gantry, it would be better from a rigidity standpoint if you have could have the axis running the other way, so the gantry only spanned 2500mm. I understand the other way offers better access.

handling marble and counter tops is very hard so easy access is an affecting factor in the production rate and ease of handling

Is the gantry the section built from 6mm, 30x40cm? Have you calculated the strength and deflection of a beam constructed like this? Perhaps run some FEA analysis on it. Others will surely comment on this, I think 6mm will be very susceptible to vibration. Not sure but it doesn't sound like it will be sturdy enough to me.

well i didn't do any calculations..actually i dont know how to do them so if you can guide me to an example or a thread that can help that would be very much appreciated.
i thought of adding some stiffeners to the beam for inside

The way you are mounting the rails to the machine with screws is interesting, don't think I've seen that before. Clearly it would be advantageous to have that level of adjust ability. Again I'm not sure but it doesn't look very rigid to me. Have you done any calculations or tests?

i found this system on some machiens
waitin