book with formulas?

[inthedark]

Can anyone recommend a book that will give the formulas for metal bending?

For instance if I had .125 material and was going to put two .25 radius, 45 degree bends how much longer would my piece need to be to make up for those bends?

Does that make sense?

Thanks,
Kenny

[Rekd]

Originally posted by inthedark Can anyone recommend a book that will give the formulas for metal bending? For instance if I had .125 material and was going to put two .25 radius, 45 degree bends how much longer would my piece need to be to make up for those bends? Does that make sense? Thanks, Kenny

Have a look at this

'Rekd

[dherbman]

I can send you a spread sheet containing a formula I use. It's fairly standard in the industry and works every time. The trick in figuring material allowances is to know what inside bend radius(IBR) is being generated. It's just that simple.
The same tooling will generate different IBR for different materials or thicknesses. It's not voodoo, it's math. I've heard so many conflicting theories about stretch, shrinkage, set-back, K-factor, bend allowances, material allowances, bend allownce, bend deductions, bind and so many other things that it's enough to make a person looking for a simple answer insane. I put out hundreds of part programs a year and only have them come back if a brake op can't get the IBR I used in calculating the flat.

Let me know if you'd like the formula, it works....

[inthedark]

That would be great, my E-mail address is kenny@kennystewart.org

Thanks again,
Kenny

[Evodyne]

dherbman,

Sounds great. Could you either post it online, send a private message, or send it to my email: lance@evodyne.net?
Thanks!

[gnax]

It's sounds very interesting !!!!!
Can you mail me? >>>>> gnax@libero.it
Thank you very very very much.
Massimo Gnavolini

[PTcutter]

send it here too!!!
philhare@gmail.com
please!!

[Doug G]

I also would like a copy send it too dagihl@comcast.net

thanks Doug

[tenderlion1]

dherbman I to would appreciate a copy.
tenderlion1@sbcglobal.net
In years gone by I was a Blacksmith in ornamental Iron, You know how times goes by and the memory has a habit of doing the same. Thank You

[bcliv]

Please send me a copy.

bcliv@bellsouth.net

Thanks!!!!

[NC Cams]

Here is a good book for aspiring and perspiring metal benders:

"Metal Fabricator's Handbook/Race & Custom Car" by Ron Fornier
ISBN 0-89586-171-2

Another good one (not for bending so much) that has some real good primary metallurgy and machining and tons of other good info for machinists and fabricators is:

Engineer to Win by Carroll Smith
ISBN 0-87938-186-8

The ones I have are original printings but I think they have both been updated and are still in print...

[fsa]

can u send me the formula sheet about sheet metal email reves_eng@yahoo.com.
thanks in advance

fsa