K factor

[fredhydro]

I'm creating some large radius rubber skirtings for my assembly. I have some holes arrayed along the circumference. What does anybody do for a k factor on a larger radius (7.5 inch)to get the hole placement accurate with rubber parts and stainless?

[Anonymous]

What are you implying?  What is radius rubber
skirting?  Are you using rubber?

K factor is used for bending steel and metals in
general.  Rubber does not have spring back!   Stainless steel
usually come in two different flavours.  Ferritic and austinitic.  The
former probably will have a k factor similar to the default that is in
inventor.  The latter is much more ductility and probably will have a
slightly different k factor than ferritic.  The final k factor for each
much really be tested.  I would suggest bend tables.  Take it to
heart.  Phone the supplier(s) and ask.

Ole

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"fredhydro" <
href="mailto:fred@hydrostripper.com">fred@hydrostripper.com> wrote in
message
href="news:f14e8f7.-1@WebX.maYIadrTaRb">news:f14e8f7.-1@WebX.maYIadrTaRb...

I'm
creating some large radius rubber skirtings for my assembly. I have some holes
arrayed along the circumference. What does anybody do for a k factor on a
larger radius (7.5 inch)to get the hole placement accurate with rubber parts
and stainless?

[Anonymous]

Fred,

For large radius bends you can set the Kfactor to 1. This moves the neutral
bend axis towards the outside of the part. In other words the flat pattern
will have no shrinkage and be the same size as the outside of you 3D part.

Stan


"fredhydro" wrote in message
news:f14e8f7.-1@WebX.maYIadrTaRb...
I'm creating some large radius rubber skirtings for my assembly. I have some
holes arrayed along the circumference. What does anybody do for a k factor
on a larger radius (7.5 inch)to get the hole placement accurate with rubber
parts and stainless?