sheet metal help

I need help on sheet metal bend allowances for example at work if I were to
make a component with 2 bends I would take the outside sizes and deduct a
bend allowance according to the gauge. e.g.

1.0mm CR4 ba = 1.8 per bend

Flange 1 30 o/s
Flange 2 50 o/s
Flange 3 200 o/s =280-2 bend allowances Flat length would need to be
276.4 but when I use solid works the sizes are different, how do I set up
the bend allowances to match what we use at work?

thanks in advance


Jules

 

try using bend deduction (excel table)

 

Try this:

BA = (.55*T)+(1.57*R)*(A/90)
..55 for copper,.64 for brass and alum,.71 for steel.

Where BA = bend allowance
T = metal thickness
R = inside bend radius
A = angle of bend

 

Yes, look up bend tables. In a bend table you can insert all the bend
settings that your company uses for each thickness of material and SW will
automatically use these settings.

 

Hi Jules!

This may or may not be useful to your particular application, but
since bend allowance is so often brought up here (every few months) I
have compiled a little information that explains some of the
principles and which might address some of the future questions.

http://www.sheetmetaldesign.com/WhitePapers/BendAllowance/Index.htm

or

http://www.sheetmetaldesign.com/WhitePapers/BendAllowance/SheetMetal-BendAllowance.pdf

Regards,

SMA

 

Sean-Michael,

Excellent information & well presented - Thanks!

Is it OK if I present this at our user group meeting?

Merry

 

Is it OK if I present this at our user group meeting?


Hi Merry,

Absolutely! Thats's why it's there. There's a little "disclaimer" at
then end and my only hope is that the data be used by someone to learn
something (or whatever). I put the info out there with the idea that
any "fair usage" is no problem.

If course, in the unlikely event that the info makes you rich, I would
expect that you would by me a Lexus with leather interior. Failing
that, use away.

Regards,

SMA

 

Thanks Sean-Michael.

I would prefer an RX8 myself, but I guess I'll have to stick with the Kia
for a bit longer!

Thanks again.

Merry