Re: [CAD_CAM_EDM_DRO] steel tubing strenght formulas ??

Tom Hubin wrote:

>
> turbulatordude wrote:
> >
> > Hi all,
> >
> > I'm looking at 2 or 3" box tubing as a frame for a router.
> >
> > It seems the stuff comes in different wall thickess and that would
> > offer different strenghts for vibration as well as flexing.
> >
> > One of my concerns is a 5 foot lenght and how much it will bend under
> > cutting pressures.
> >
> > Does anyone know how to calculate this ? or is there software that is
> > available ?
> >
> > Dave

****************************

> Hello Dave,
>
> Try searching for beam deflection. Usually includes cases for
> rectangular and round tubes with loading on far end (like a diving
> board), in the center, and distributed (like a bookshelf).
>
> I have used the formulae for book shelving but cannot find right now.
> Might have time Sunday to dig deeper.
>
> Tom Hubin
> thubin@...

********************************

Hello Dave,

Found the formulae that I used in Marks' "Standard Handbook for
Mechanical Engineers", McGraw-Hill Book Co., 9th edition, pp5-21 to
5-33.

Can't tell you much more about the book itself cuz I copied just these
pages at some library. These pages were hard to understand at first but,
once understood, the formulae were not difficult to apply.

Sorry, but I don't have time to post the actual formulae right now.

Tom Hubin
thubin@...