You cannot see the neutral axis in SolidWorks. He shows it by manually drawing a sketch (the one shown with centerlines) at a specific "offset" from the inside of the bend. The amount of the offset is related to the K-factor set in the property manager and the thickness of the sheet metal part. So, when he changes the K-factor manually, the amount of the "offset" changes as well. The bend allowance is the arc length measured on the "neutral axis sketch". It can be measured either by measuring the arc length on the "neutral axis sketc", or by flattening the sheet metal part and measuring the distance between the bendlines of the corresponding bend.
Thx for sharing. It was not clear to me because I don't know how to use any software. I would like to ask you if it's possible to do it in a manual way of calculation. Thx very much.
In a word, K Factor depends on everything....it depends on inside radius, material thickness, material type, bend angle, tooling selection, grain direction, etc... a change to any variable of the bend will change the K factor even if its slight. It's always best to create samples bends with each one of the these variables controlled to get bend deduction/K factors specific to your own processes. If your company does the designing but not manufacturing, i would suggest just using a .4 or .45 K factor across the board and leaving the flat size development up to your suppliers. See these links... www.thefabricator.com/article/bending/analyzing-the-k-factor-in-sheet-metal-bending www.thefabricator.com/article/bending/analyzing-the-k-factor-in-sheet-metal-bending-part-ii
See these links... www.thefabricator.com/article/bending/analyzing-the-k-factor-in-sheet-metal-bending www.thefabricator.com/article/bending/analyzing-the-k-factor-in-sheet-metal-bending-part-ii
While this is a good video for explaining how to use the variables in SolidWorks, it doesn't do the best job of explaining what these variables are, where they comes from, or how to apply them outside of SolidWorks.
lecture was good, thank you for sharing. I am not able to see neutral axis, bending allowance in my sheet metal part file. So how to enable it?
You cannot see the neutral axis in SolidWorks. He shows it by manually drawing a sketch (the one shown with centerlines) at a specific "offset" from the inside of the bend. The amount of the offset is related to the K-factor set in the property manager and the thickness of the sheet metal part. So, when he changes the K-factor manually, the amount of the "offset" changes as well.
The bend allowance is the arc length measured on the "neutral axis sketch". It can be measured either by measuring the arc length on the "neutral axis sketc", or by flattening the sheet metal part and measuring the distance between the bendlines of the corresponding bend.
Thx for sharing. It was not clear to me because I don't know how to use any software.
I would like to ask you if it's possible to do it in a manual way of calculation.
Thx very much.
this works for only bending antil 90 degree or can be used for more than 90 degree too?
What does the K factor depend on? Does it depend on the material? What's the K factor for a HSLA steel? 0.5?
In a word, K Factor depends on everything....it depends on inside radius, material thickness, material type, bend angle, tooling selection, grain direction, etc... a change to any variable of the bend will change the K factor even if its slight. It's always best to create samples bends with each one of the these variables controlled to get bend deduction/K factors specific to your own processes. If your company does the designing but not manufacturing, i would suggest just using a .4 or .45 K factor across the board and leaving the flat size development up to your suppliers.
See these links...
www.thefabricator.com/article/bending/analyzing-the-k-factor-in-sheet-metal-bending
www.thefabricator.com/article/bending/analyzing-the-k-factor-in-sheet-metal-bending-part-ii
How can we activate the dimension as viewed in video
Volume is too low..
My question is, why the sheet metal thickness can't be linked to a global variable..? 🤔
Partly understood sir!
Thank you very much
thanks your for sharing
Thank you.
Excellent
Legend
Well explained
@Jeffrey Joey no we dont care
I don't understand! :/
See these links...
www.thefabricator.com/article/bending/analyzing-the-k-factor-in-sheet-metal-bending
www.thefabricator.com/article/bending/analyzing-the-k-factor-in-sheet-metal-bending-part-ii
While this is a good video for explaining how to use the variables in SolidWorks, it doesn't do the best job of explaining what these variables are, where they comes from, or how to apply them outside of SolidWorks.
Ur voice is not that audible.
why cant u just speak louder?