Hello,
We are designing Helix Staircase with Helix Glass Guardrail.We would like to open bending glass parts for manufacturing.But We need K value for glass.
Regards,
Hello,
We are designing Helix Staircase with Helix Glass Guardrail.We would like to open bending glass parts for manufacturing.But We need K value for glass.
Regards,
Hı Bjorn,
Thanks for informations.Im not manufacturing glass.Im buying from glass manufacturer.They need opened curved glass dimensions and diameters.I must give those drawings.Whats your opinion if ı accept 0.5 k value?
Regards,
Serdar
I'd be inclined to do some tests on a few variations of the K factor and see what the difference is in the flat length of the part. With such a large radius I'd expect a K factor 0.5 to be pretty reliable. But really your supplier should know what they're doing and be doing these calculations for you.
Hi Serdar
K factor depends on many things. It depends on the machine, material, operator, thickness etc...
My suggestion is create a simple bending part in SW and talk with your supplier and want them to do it.
Then compare the results for real bending and SW. Try some K factor values for reaching the real dimensions
Best Regards
Seckin
Hi Serdar,
if I understand you properly, you wish to use the sheet metal functions to create bent glass elements?
The K-factor (or any bend allowance) to my understanding usually helps predict the amount of stretching/compressing the material will do on a press break under great stress. A cold forming method. Calculating the correct K-factor value for your CAD system
Though I'd love to see glass being cold formed, I'm thinking it will be heated until it is readily formable without much/any stress. So a K-Factor would be difficult to determine, I'd start with 0.5
Are you manufacturing the glass parts? or is this being out-sourced? If you're out-sourcing I'd be inclined not to provide a lay-flat and allow them to do the calculations on their own. If you're doing it in-house, the knowledge must be there somewhere already?