quadruple tube

[andreaf93]

Good morning to all,
I must simulate the bending of a rectangular tube so that it can be produced by laser tube, as an example taken on the internet: I have currently drawn the profile that interests me in the following way, creating the drains to carry out the bending later:
I found that the flex function is the most suitable for this application, but I have problems using it. Does anyone have experience in this? Thank you.

Good day

 

[MassiVonWeizen]

piegatura tubolare tagliato

Buonasera, avrei bisogno di un consiglio. dovrei disegnare un tubolare che viene tagliato a laser per realizzare un paio di fori e dei tagli. Questi ultimi servono per poter lasciare piegare (a mano) il tubolare in quella zona. non riesco a capire come procedere in fase realizzativa...

www.cad3d.it

 

[andreaf93]

I have already seen that discussion, but let's say that I don't really like it because it's an obstacle.

trying I managed to make a first fold on the tube with the flex function:
the problem now I match it in making the second fold always with the flex function, you change the curvature plan and I can no longer give it the correct twist.

 

[MassiVonWeizen]

I have already seen that discussion, but let's say that I don't really like it because it's an obstacle.

if you want to have a correct development that therefore takes into account also of the withdrawal of the material the only way is to use tools that make the calculation of the withdrawal, that is the sheets.
the flender tool does not take into account the factor k.

 

[andreaf93]

I confirm that it is possible to make even more folds with the function "flettere" it is sufficient to correctly set the fold points and their respective plans.

if you want to have a correct development that therefore takes into account also of the withdrawal of the material the only way is to use tools that make the calculation of the withdrawal, that is the sheets.
the flender tool does not take into account the factor k.

Just increase the width from the two fold points by manually considering the collection of the material, this thing does not see it as a limit (although I think the withdrawal is lower in a pipe bending than from sheet except practical tests).

Thank you

 

[MassiVonWeizen]

just increase the width from the two fold points by manually considering the collection of the material, this thing I do not see as a limit

for me too this is bypassing the obstacle because instead of making the calculation to the software you do it by hand with all the risks of the case.

(although I believe that the withdrawal is lower in a pipe bending than by sheet except practical tests).

What do you think? Did you audition? Do you have any documentation about this?
I say that a bending is always a bending and depends on thickness, material, folding equipment and then between bending a sheet 30/10 of s275jr and a tube thickness 3mm of the same material does not change anything. in fact when I made pipe bendings, from which then the example of the attached discussion was born, I always considered the withdrawal I used for the bending of the sheet and the final result was correct

 

[MassiVonWeizen]

just increase the width from the two fold points by manually considering the collection of the material,

I take this phrase because I don't understand what you mean by two fold points. Could you explain yourself better?
However I point out that the retreat is rarely equal to k 0.5 (if + this you mean by two fold points); that value is used in the calves.
Moreover the fletre command does not consider the withdrawal, so if you increase the stretch tube of 5mm, for example, to compensate for the withdrawal of the fold the tube after the flexor command will still be longer than 5mm, or is it wrong?

 

[andreaf93]

I mean that you should have a drawing tied only to the cut by adding the material you need to compensate for the withdrawal and drawing of the folded with the functions that you need to have the maximum measurements with the folded piece.

however they are points of view, then the important is the result.

 

[MassiVonWeizen]

however they are points of view, then the important is the result.

Obviously it is so; a comparison between procedures and skills can make a discussion useful.

I confirm that it is possible to make even more folds with the function "flettere" it is sufficient to correctly set the fold points and their respective plans.

can you attach your result and an explanation of how you have worked to help who in the future will have the same need?

 

[andreaf93]

practically I created the bent profile using the bending function as from attached file. once the desired profile has all the folds we need just copy the file creating an identical second that we will use for cutting; We will eliminate the bending functions and we will increase the length of the various folds so as to add material for the fold withdrawal.

 

[re_solidworks]

I had done it in the past using the sheet, gross like this:
1- drawn the thickness that remains whole, already bent with the functions of sheet metal
2- Extruded, emptied and combined with the command combines the missing tube piece (for each side)
3- put to the table as a sheet and created a configuration to have a 3d to be converted into step for the lasertube