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by Fra88
Thu Oct 17, 2019 8:16 pm
Forum: Help on using FreeCAD
Topic: [SOLVED] Wrong sheet metal unfold dimensions?
Replies: 7
Views: 111

Re: [SOLVED] Wrong sheet metal unfold dimensions?

Look at Page 7, picture 8.
by Fra88
Thu Oct 17, 2019 8:08 pm
Forum: Help on using FreeCAD
Topic: [SOLVED] Wrong sheet metal unfold dimensions?
Replies: 7
Views: 111

Re: [SOLVED] Wrong sheet metal unfold dimensions?

I think that dipend on the definition of Kf. In "my" formula Is defined as the ratio between neutral axes position taken from internal bend (t) and tickness: Kf=t/T. I have found this definition in the file attached (i'm sorry It is in italian language). In this file neutral factor Is indicated with...
by Fra88
Thu Oct 17, 2019 7:37 pm
Forum: Help on using FreeCAD
Topic: [SOLVED] Wrong sheet metal unfold dimensions?
Replies: 7
Views: 111

Re: Wrong sheet metal unfold dimensions?

Dear chrisb, thank you for your reply.
Yes you are right!!!
Sorry for my big mistake :oops: :oops:
by Fra88
Thu Oct 17, 2019 6:23 pm
Forum: Help on using FreeCAD
Topic: [SOLVED] Wrong sheet metal unfold dimensions?
Replies: 7
Views: 111

Re: Wrong sheet metal unfold dimensions?

Sorry there is a mistak in the formula.
The correct one is:

L1+L2+(Ri+Kf*T)*pi/4=98+98+(1+0,5*1)*pi/4=197,178mm
where L1 and L2 are the lenght of the straight plates, T=thikness, Kf=neutral factor, pi=3,14..., Ri=internal bend radius
by Fra88
Thu Oct 17, 2019 4:41 pm
Forum: Help on using FreeCAD
Topic: [SOLVED] Wrong sheet metal unfold dimensions?
Replies: 7
Views: 111

[SOLVED] Wrong sheet metal unfold dimensions?

Hello, I'm making some tests with the module sheet metal. I made a simple bend with this parameters: - sheet metal thickness= 1mm - internal bend radius= 1mm - bend configuration: 90° bend with Kfactor=0,5 other dimension are summarized on picture and FC file attached. When I use the unfold command,...
by Fra88
Fri Mar 01, 2019 7:06 pm
Forum: Open discussion
Topic: SheetMetal Radius and Kfactor
Replies: 1
Views: 189

SheetMetal Radius and Kfactor

Dear all. Hello and thank you for developing freeCAD every day for us. I'm Mechanical Engineer and I use FreeCAD at home for some small projects. Sometimes I need to make parts in bended sheet metal, so I use sheet metal workbench. I have a problem: every time that I make a bend, I have to change in...
by Fra88
Mon Jan 21, 2019 7:49 pm
Forum: Forum Italiano
Topic: Cartiglio editabile
Replies: 3
Views: 355

Re: Cartiglio editabile

Ciao,grazie mille per l'aiuto.
Sono riuscito a creare il rwato edutabile seguendola guida.
Ho visto che è abbastanza macchinoso e che se le robe non vengono fatte in serie come descritto, FC non importa correttamente il file.
by Fra88
Sat Jan 19, 2019 4:30 pm
Forum: Forum Italiano
Topic: Cartiglio editabile
Replies: 3
Views: 355

Cartiglio editabile

Buona sera a tutto il gruppo. Oggi mi sono costruito un cartiglio seguendo passo passo la guida riportata nel seguente link: https://www.freecadweb.org/wiki/Drawing_Template_HowTo/it in particolare ho creato dei campi di testo editabile inserendo nel file *.svg la riga freecad:editable="nome_stringa...
by Fra88
Sat Dec 29, 2018 12:31 pm
Forum: Forum Italiano
Topic: kfactor e radius Sheet Metal
Replies: 4
Views: 303

Re: kfactor e radius Sheet Metal

Ciao easyw-fc. Ho fatto un test. Per rendere la cosa visibile, ho modificato lo script sostituendo la variabile kfactor con radius. Selezionando la piega più esterna, lo script agisce solo su questa. Selezionando tutte le pieghe invece, lo script lemodifica tutte. Per il resto sembra funzionare bene...
by Fra88
Sat Dec 29, 2018 11:49 am
Forum: Forum Italiano
Topic: kfactor e radius Sheet Metal
Replies: 4
Views: 303

Re: kfactor e radius Sheet Metal

Grazie mille per la risposta, oggi pomeriggio faccio una prova, se funziona proverò a modificare il codice per poter variare anche il raggio di piega. Buona giornata

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