K Factor Sheet Metal Inventor

When metal is bent the top section is going to undergo compression and the bottom section will be stretched.

K factor sheet metal inventor.

By default inventor uses a k factor for calculating bend allowances. The ilogic rule code is shown below. Inventor forum sheet metal k factor. K factor a constant determined by dividing the thickness of the sheet by the location of the neutral axis which is the part of sheet metal that does not change length.

Michael davis owner of ycg inc. Optionally enter an alternative spline factor value in the spline factor value field. Optionally enter an alternative kfactor value in the kfactor value field. So if the thickness of the sheet was a distance of t 1 mm and the location of the neutral axis was a distance of t 0 5 mm measured from the inside bend then you would.

K factor a constant determined by dividing the thickness of the sheet by the location of the neutral axis which is the part of sheet metal that does not change length. For autodesk inventor users i recommend that you set up multiple sheet metal styles for each bending scenario and name them to include the tooling and material details eg 1 5mm aluminium 16mm vee and set the k factor for each one after performing a bend test and calculation. You are in strange waters on this one start entering changing k factor numbers until you get what you want. Products and versions covered.

Select fx linear as the unfold method. Owner of ycg inc. Using a linear approximation kfactor using the linear unfolding method sheet metal parts unfold using a kfactor value that is uniformly applied to all bend angles. Using ilogic to access the inventor api we created a custom iproperty and pushed the k factor from the current sheet metal style through to it.

The default k factor is 0 44 which simply means that inventor is assuming that 44 through the cross section of the part the material is not stretched or squashed when bending and therefore this slice of the folded part will give the true length of the flat pattern. The location of the neutral axis varies and. So if the thickness of the sheet was a distance of t 1 mm and the location of the neutral axis was a distance of t 0 5 mm measured from the inside bend then you would. I don t even know if you could enter a 0 0 for a k factor in inventor possibly something like 0 0000000000001 or it could be 1 0.

The line where the transition from compression to stretching occurs is called the neutral axis. Sheet metal k factor.