Gap or no gap on sheet metal bends ?
Gap or no gap on sheet metal bends ?
(OP)
Gap or no gap on sheet metal bends ?
Is it ok to make bends without gaps like in photo or is it wrong ?
Is it ok to make bends without gaps like in photo or is it wrong ?





RE: Gap or no gap on sheet metal bends ?
What is the difference between all these gap-styles ?
RE: Gap or no gap on sheet metal bends ?
It is common for enclosures and cabinets to have a no gap corner when the final appearance is to be a close joint.
The main criteria for a close gap corner is the ability to form the part without tearing the corner.
Open gap corners are often used where the corner is welded to allow for penetration of the weld metal.
The exception to this is cabinets made of stainless steel that are often fused at the corners, where the gap is kept as close as possible, to reduce cleanup.
B.E.
You are judged not by what you know, but by what you can do.
RE: Gap or no gap on sheet metal bends ?
RE: Gap or no gap on sheet metal bends ?
RE: Gap or no gap on sheet metal bends ?
RE: Gap or no gap on sheet metal bends ?
"Art without engineering is dreaming; Engineering without art is calculating."
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RE: Gap or no gap on sheet metal bends ?
However, learning enough about the process to make an educated guess is probably better.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Gap or no gap on sheet metal bends ?
In your first example (no gap), the cut should end in a round hole.
In your second, the inside corners of the slot should be rounded.
The third style is actually a very good suggestion/solution that removes stress from the bend.
Benta.
RE: Gap or no gap on sheet metal bends ?
RE: Gap or no gap on sheet metal bends ?
A bearly tolerable reality is hard to model (i find that a lot these days ... the software limits are designing parts for us !) ... imagine you have a flat pattern and create both bends. you'll get some funky double curved result in the transition, probably a crack as well.
the 3rd with with the bend relief/undercut is typical in my business. that or putting a reasonably large hole at the intersection of the flange sides in the flat pattern, so that the two flanges never see one another (when bending the radii).
another day in paradise, or is paradise one day closer ?
RE: Gap or no gap on sheet metal bends ?
There is a good article (“DFM and Sheet Metal”, that is, Design for Manufacturing and...) on this general subject in the latest issue (NOV16) of Machine Design mag. Go to machinedesign.com, if you don’t get the mag. To do a good design, you do have to know a great deal about how it is going to be manufactured, as mentioned above. A good design is also flexible enough in its detail to allow for some minor variations in detail as a function of the tooling the shop uses, and for best results you and the shop should be cooperative in meeting what they can do for the best final product/part results.