Is this what everyone is using for deigning parts/calculating dimensions? Im having trouble with getting accurate dimensions when going from software to actually making parts. I use the bend radius called out here:
in the purchasing guide pdf.
From what I can tell changing the bend radius changes the dimensions of the bend lines (or their spacing from one and other/the edge of the part). I also notice the ‘inside bend radius’ on the bendcontrol screen that changes with different dies and wonder where this fit in.
The problem im having is that the calculated dimensions for the flanges are different from the actual dimensions when the part is actually bent, and rather than use material for figuring out what they need to be, Id like to accurately design the parts using fusion or some other software.
Any insight from those who are more experienced than me would be appreciated !
I think the disconnect here is the Minimum Flange length discussing the length of material past the center of the bend line while your fusion 360 default input for creating flanges is the flange height which will not be the same. I think you could unfold the part and measure the distance from the bend centerline to the end of the flange and see if it goes under the Minimum Flange length from that chart.
You will also want to adjust the bend radius override if you have not done it already. The default bend radius on fusion 360 bends will not be accurate.
right, so replace the default bend radius in fusion (which is the thickness of the material in sheet metal rules) with the value from the chart? (for example .105 when using the 4way die .63" opening)?
I’m away from my notes, but I have been making a reference to help make sure I’m also getting the parts off the press as designed… Happy to share when I make a little more progress. I also found sendcutsends’ bend design guide to be pretty close! Note, K-factors are also not what Fusion thinks they are.
But I have been bending, checking lengths and trying to measure the as-bent bend radii.
Thanks for linking those! I was lazy. And look-you found a whole table we can import! Since I just got started testing I’ll try to validate these. I’m only planning to do a few gages of steel and 5052.
