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# How to finish the kind of bend on sheetmetal ?

Creator

Hello, people, sorry for asking this kind of nooby question,

I am now trying to make a simple sheet metal product which is supposed to be too easy to have any problems,

YET, I can't do this kind of bending on my product only with "Bend", it seems like it has some kind of restriction or stuff like that.

This pic below is to show the bending that I want to make in NX 10, but it's actually under "PTC Creo" enviroment.

Thanks a lot.

7 REPLIES

# Re: How to finish the kind of bend on sheetmetal ?

Creator

when I wanna do the second bend, It just wouldn't work.

# Re: How to finish the kind of bend on sheetmetal ?

Siemens Phenom

Hi @knockitover,

Use Jog command.

Regards,
Ganesh
#IngenuityIsNX | NX - What's New

# Re: How to finish the kind of bend on sheetmetal ?

Creator

but it seems like there's another problem, originally, the length should be 5.1mm when it's unbent. But I use "jog", it seems like the length of hte  sheetmetal would be automatically adjusted. The pic above, is surely not 5.1 mm when it's unbent.

# Re: How to finish the kind of bend on sheetmetal ?

Siemens Phenom

There are many ways in NX to achieve the desired result, it really depends on the complete design required.

For this simple design you can:

• add flanges (using the 'bend outside' inset type)
• use Contour Flange and generate the entire design from a sketch

I have attached an NX10 part with all three solutions included (edit the features to see the methods used).  I would strongly recommend you contact your reseller for a training program to get the best value from NX.

Dave

# Re: How to finish the kind of bend on sheetmetal ?

Creator

Thank you so much @Dave_Walker,
I know there are multiple ways to finish this simple task,
but I meant if I use Jog, it will automatically adjust the length.
If I use flange, then I will have to calculate the dimensions in advanced.
And if I use contour flange, I have to know all dimensions.
What I am actually saying that, If I only know the unbend length, and the exact edges to bend, no other dimensions.
then how can I solve it out ?
I am sorry it's a bit complicated.

# Re: How to finish the kind of bend on sheetmetal ?

Siemens Phenom

@knockitover wrote:
...
What I am actually saying that, If I only know the unbend length, and the exact edges to bend, no other dimensions.
then how can I solve it out ?
I am sorry it's a bit complicated.

So if your design starts with the unbent length then you need to know your manufacturing parameters.  NX calculates the unbent length based on the parameters you enter for the neutral factor (the internal plane that does not compress or stretch when you bend the material).

Sheet Metal bend parameters

It is unusual to start with the unbent length when designing sheet metal parts however there are methods for that (some of which get easier with the latest release of NX!).

I have attached the part again with an alternate method you may like to consider.  I would not recommend this as a general workflow though - design the part and compute the unbent length based on the manufacturing process.

Dave

# Re: How to finish the kind of bend on sheetmetal ?

Creator

@Dave_Walker Much appreciate it. I'll try to figure it out.