Sheet Metal Bending
Sheet Metal Bending
(OP)
Ok, so I am having a brain fart. I used to have a handy chart for bending sheet metal. It had a series of formulas and factors for different kinds of materials and different bends to show how much the material would thin out at the bend section. I have tried googling many terms to find some sort of diagram or table with no luck. I even dug through all my old text books from college to find it, also with no luck.
Does anyone know where I might find something that will help me? Oh, and the machinery handbook is not an option as my company does not allow it on the premises.
I know this is kind of an easy question, so please spare me the arrogant snide little comments that ususlay come with them. I already feel dumb for having to ask, I don't need others to tell me as well.
Thank You...
Does anyone know where I might find something that will help me? Oh, and the machinery handbook is not an option as my company does not allow it on the premises.
I know this is kind of an easy question, so please spare me the arrogant snide little comments that ususlay come with them. I already feel dumb for having to ask, I don't need others to tell me as well.
Thank You...





RE: Sheet Metal Bending
it is easier to bend in O-condition if you're going to heat-treat back to structural properties later.
what sort of mateials are you mostly interested in ?
what sort of snide comments were you expecting ?
arh, forget that ... you've probably been reading some of the other threads !!
RE: Sheet Metal Bending
Yes, in many of the other posts I read, there is always someone whoe feels like they are superior to everyone else, and they make it a point to make the questioner look stupid. I don't think that it is needed...
RE: Sheet Metal Bending
RE: Sheet Metal Bending
RE: Sheet Metal Bending
RE: Sheet Metal Bending
I can see why someone may not want to allow final design to be based on MH data (since is it neither a standard nor a primary source for data), but why the actual prohibition? (You had to know questions like this would come up!:) )
Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group
RE: Sheet Metal Bending
MH is not allowed because it is viewed as an inacurate, un-manufacturable set of data. Most of the reccomended values in the book are impossible for suppliers to meet. So to keep problems from occuring, we ahve outlawed the use of the book... They seriously send someone around to collece every copy in the company and got rid of them.
RE: Sheet Metal Bending
RE: Sheet Metal Bending
RE: Sheet Metal Bending
It does seem strange though that they would remove them without supplying allowable standards to replace them.
RE: Sheet Metal Bending
RE: Sheet Metal Bending
http:/
Ted
RE: Sheet Metal Bending
Matt Lorono
CAD Engineer/ECN Analyst
Silicon Valley, CA
Lorono's SolidWorks Resources
Co-moderator of Solidworks Yahoo! Group
and Mechnical.Engineering Yahoo! Group
RE: Sheet Metal Bending
No, that link doesn't help. But thank you... I ended up finding the paper I was looking for when i was home at lunch. It was burried in my files, it shows how much the material will expand and contract depending on what the metal is, the thickness, and the type of bend.
Thank you all for you attempt at help though.
RE: Sheet Metal Bending
RE: Sheet Metal Bending
Now, back to this MH thing. The recent editions of the book are 2600-2700 pages long. If you look at any inaccuracies included in it on a mistake per page basis, I wonder how it compares with "acceptable" reference materials?
Sorry, I find the MH angle fascinating, as I'm sure several others do.
RE: Sheet Metal Bending
A lot of it as suggested above is more in how it's used than in the book itself.
That said, it's on my Christmas list for this year!
sbozy, don't suppose you fancy scanning that page and sticking it on here, maybe use the Engineering.com link. It's something that has come up here before.
KENAT, probably the least qualified checker you'll ever meet...
RE: Sheet Metal Bending
RE: Sheet Metal Bending
I can deal with arrogance, and I can deal with ignorance, but that particular combination is very dangerous, because the one flaw makes it impossible to correct the other.
Mike Halloran
Pembroke Pines, FL, USA
RE: Sheet Metal Bending
Yeah, I do have a copy of the MH at home. This sheet I have is something an old boss put together a few years ago. It is just basicaly a guide to go bye when dealing with sheet metal. I will hapily post it up when my boss gets back in the office and I have access to our scanner.
In the mean time, if you go to the engineers edge, I found a handy bending calculator that works quite well.
Cory, you supprise me, infact most of you supprise me. 90% of the engineers I have every worked with despise the MH. They find that it lits impossible values for manufacturing, and find themselves in a bunch of trouble every time they base a calculation from it. I could go either way, I am not a fan, but I will atleast use it to get me started, then adjust for "real life" abilities.
RE: Sheet Metal Bending
I have not heard of MH having impossible values for manufacturing. That's curious. The book has been around for a long time. Supposedly written by 'practical' people.
Ted
RE: Sheet Metal Bending
RE: Sheet Metal Bending