bending radius of a plate

[joe]

Hello
I have to draw with autocad 2011 a plate of mm 10 thick folded with u shape of size mm 100 x 50 x 100, please tell me how do I calculate the exact bending radius to have the precise development according to which to use the material with the right length?

 

[AntonioV]

if you intend to make a semicircular section of radius 50 mm., then the development should be equal to:

= 50*3.1416 = 157.08

:

 

[joe]

In reality it must have a rectangular shape with the two rounded edges. the inner radius must be equal to the thickness of the plate, i.e. 2 mm?
in this case the development of the piece how is calculated?

 

[AntonioV]

be kind, being the undersigned a little (so) delayed, could you draw the piece (start->esegui->mspaint) with quotas, save it as .bmp and then put it here in the forum?

Thanks

 

[Alberto.E]

I quickly designed your plate in pro engineer and created development.
with a k factor of 0.275 your plate will have to be 242,2 mm long, practically the sum of the inner folds + 2 tenths for the collection of the material.
I hope you can help


I forgot, from your description, the plate I imagine is so

 

[Alberto.E]

Even if... dear joe... first you say that the plate must be 10 mm thick and then you say that the fold radius must be equal to the thickness i.e. 2 mm.
but what thickness should this sheet have?
maybe with those 10 mm you mean the width of the sheet strip?

 

[joe]

I understand, right
but the k factor is always a constant? is it worth all the thicknesses?

 

[sampom]

Even if... dear joe... first you say that the plate must be 10 mm thick and then you say that the fold radius must be equal to the thickness i.e. 2 mm.
but what thickness should this sheet have?
maybe with those 10 mm you mean the width of the sheet strip?

also because a thick sheet 10 is difficult pieghi cold with ri equal to 2.

and if instead it is thick 2 and wide 10 for development do the sum of the internal sides you go well.

greetings
Marco:smile:

 

[joe]

I apologized, put the 10 instead of that 2

 

[ForFlight]

Hello
I have to draw with autocad 2011 a plate of mm 10 thick folded with u shape of size mm 100 x 50 x 100, please tell me how do I calculate the exact bending radius to have the precise development according to which to use the material with the right length?

I'll get you a pdf, if you wait in the afternoon I'll coach you something else!:finger:

 

[ForFlight]

I understand, right
but the k factor is always a constant? is it worth all the thicknesses?

varies according to material and thickness!

 

[Alberto.E]

No, the kfactor is not always constant. 0.275 is one of the values that I use to achieve proper development for our machines and for the sheet we use.
However I have redesigned the plate thickness 10 mm and r inside 5 and the length is 214 mm. obviously if you want to try bending with internal radius 2 you will have to add another 2/3 mm of material.


However being a very simple piece some tests in the car you can also do it! !

 

[joe]

this is the plate in question

 

[joe]

Could I have a table where there are all the kfactor values to be used to calculate the developments of sheets to be folded?

 

[ForFlight]

Could I have a table where there are all the kfactor values to be used to calculate the developments of sheets to be folded?

right now I finished the pdf, I tried to be clear, there is everything you need, the model is developed with catia, but the parameters are always the same! Let me know!

 

[ForFlight]

Here's the cat's model! If you want, give me some reputation, you can do it from the flag under my avatar!:wink:

 

[joe]

I was hoping for a more practical and quick method to calculate development

 

[Alberto.E]

passa ad un cad parametrico

 

[ForFlight]

I was hoping for a more practical and quick method to calculate development

the method I posted, in my opinion it is practical and fast! personally when I have to create some dieped details, with mating holes that will have to coincide with necessary coordinates for the assembly, you have to develop the calculations on paper, you will need to know the k factor of the material, the fold rays and the dimensions to be realized! where I work we use as material the aluminum that has a k factor of 0.6 and if you are wrong to insert this parameter in the cad (parametric) the calculator will not give you correct results. Many of my acquaintances use a k factor 0,4 keeping themselves close to the 0,6 parameter, but in my opinion it is okay if you have to create a particular single that should not be assembled with many other components, with a calculation made in this way the correct parameterization will not occur! :finger:

 

[sampom]

right now I finished the pdf, I tried to be clear, there is everything you need, the model is developed with catia, but the parameters are always the same! Let me know!

What a combination. .:tongue:
the same documents that he had posted a short time ago a "old boy our friend"....
You'll certainly get a reputation, wait for it.

I already told you,

greetings
Marco:biggrin: