k factor and bend radius
k factor and bend radius
(OP)
I started recently with this company that does a lot of stainless steel sheet metal bending. Regardless of the thickness they always use a k factor of 0.18 and a bend radius of 0.001, which is wrong. The actual bending rad in the final product is larger than 0.001. They say that these values give the best representation of the flat pattern in SW drawings. My question is: Has anyone did some testings and came up with real world values for k and bend rads?






RE: k factor and bend radius
We use a K-factor of .434 and default bend radius of .063 for all materials from 20ga-10ga. We arrived at these numbers through several rounds of tests and close coordination with our fabrication department.
If your company says it works for them, why argue the point (even if they are probably wrong)? Does the final part pass inspection to the drawing? That is what matters.
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RE: k factor and bend radius
The .001" rad may work OK for the flat, but will not create a model which is a true representation of the actual part.
An actual part which meets "form, fit & function" is of course paramount, but IMO, with a little bit of thought & effort they could have all the elements (model, flat & part) accurate & true to life.
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RE: k factor and bend radius
Bradley
RE: k factor and bend radius
hope that helps
Regards,
Jon