solidworks >> Help!! extrude-cut on Lofted Bend

by ericschwiet » Wed, 31 Jan 2007 23:56:53 GMT

On Jan 31, 10:31 am, XXXX@XXXXX.COM wrote:
> I am designing a plow for a locomotive. Similar geometry to a snow
> plow on a truck. I need to make a cut out for an access door on the
> bend of the upper portion of the plow. I have tried a few things-
> (unfold, cut, and then try to fold) gets an error saying some features
> cannot be folded. I would like to make the cut on the flat
> pattern(layout). Any advice?
> Thanks,
> Eric

I figured it out.....I had an extruded-cut through the lofted bend in
the folded state. Since that cut was there it gave an error for a cut
in the unfolded state.

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I'm a new user of solidwx. I've got a problem with the bending tables,
working with the loft feature in sheet metal mode.
I've just prepared my excel work sheet, and I tried to work with it.
When the cad asks for it, I tell the directory (my docs) where it is.
But the developed lenghts are still wrong.
For example: for a cylinder with a diameter of 1000 mm, I get a devoloped
lenght of 12000 mmm.
To be complete, the equation I used is:

Lb = alpha ( R + kT )


- alpha is the bend angle in radians
- T is the sheet thickness (usually bigger than 8 mm)
- R is the bend radius
- k is a costant value.

Are there other equations to describe and get the correct lenghts?
Where is my problem?

Waiting for a positive reply, thank you very much.