Question about sheet metal folding.

[cvriv.charles]

I just want to know if im doing this right?!?! I created a sheet metal rule. I used the face tool to extrude a sketch. I then created another sketch with a bend line on the part. I then folded the part using that bend line. Is that right? It worked I just have a feeling there's a better or right way to do it.

 

I know your suppose to build your folded part but what if you have a sinlge flat part with details(islands) that need to be folded? I tried cutting that single part into two parts and then fold where they meet but the two parts kind of became one.

 

I dont get it.

[jdits7]

Please include what you have got so far.

 

jdits7

[cvriv.charles]

Oh I forgot to attatch the file. Sorry.

[cvriv.charles]

Damn. I can't figure out why this little tab when folded upwards at 90deg takes the whole corner of the part with it. The bend projects over across the corner ofthe part. I dont want it to do that. Its suppose to be just for the little tab.

 

Theres another tab that fold upward 90deg just fine. But the other tab isnt behaving. Please help.

[JD Mather]

>I dont get it.

 

I noticed that your sketches are a mile from the origin, no dimensions and not making use of symmetry. What part of my tutorials did you actually understand. You would do well to get some classroom training if you can't read a paper and figure it out on your own.

[cvriv.charles]

>I dont get it.

 

I noticed that your sketches are a mile from the origin, no dimensions and not making use of symmetry. What part of my tutorials did you actually understand. You would do well to get some classroom training if you can't read a paper and figure it out on your own.

 

These arent my sketches. I loaded them from DXF's files. When I draw something from scratch I start at origin and I use my constraints and dimension tools. I can probably go back and try to redraw all of them. There are like 25 of them total.

 

I dont know if it the loading of the DXF files in Inventor but there were a lot of errors. I had to fix them just to extrude and bend what I could.

 

It was bothering me before that the drawing were looking like the wild wild west but I kind of brushed it off. But I think I'll go back and redraw or maybe trace them.

 

While im doing that can you explain why that one corner was folding with that little tab? Please.

 

Thanks.

[cvriv.charles]

This is my work here. Well,.. it the first thing I have made. It very simple but neat:) I moved all the EOP's up on the parts. 3 parts.

 

Please help me with the beding problem. Is it a contraint problem? I thought maybve it was but one of these parts are constrained. The other littlb etab in the same drawing should of done the same thing.

[jdits7]

I looked at the part with the bending tab issue. I think using the fold technique you would have to have a reief cut put in before. I modified that file to show you what I did.

1040432PF-jdits7.zip

[cvriv.charles]

Ok thanks.I didnt think you would have to do that seeing that inventor is suppose to do it for you. I have to dimension and constain these drawings first as JD said. I really didnt want to have to do that because its a PIA.

[cvriv.charles]

I am having so much trouble constraining/ dimensioning these two specific drawings. As said before they are not my drawings. I am only giving them a third dimension.

 

There's like 20 something drawings. I have been loading these dxf files and cleaning up the geometry. I dont know if it's the designer that did it or if it was the loading of the dxf's into inventor. But there are overlayed lines, several straight lines making up a single straight line, crossing lines,... you name it's there. After cleaning all that up I initiate the auto dimenion tools. I auto the constraints. I then go back and use the = contraint where the auto tool didnt issue it. After that I will auto dimension. For several of the drawings it worked great. Fully constrained.

 

But for these 2 drawings so far, after cleaning up the geometry,... if I go to auto dimension, INV crashes everytime! Everytime. I can auto constraint with no problem BUT,... if I F8 and then F9, INV will crash. I tried on my desktop and my laptop. Same thing happens.

 

When I came across the first drawing I kind of gave up on it and moved on to the next drawing. Same thing happened! I put that one aside and move on to the next. No problem whatsoever! So far, because I have several more drawing to go, those 2 drawing I havent been able to figure out whats going on with them! I have no hair left! I am ready to put my fist through the screen. I am literally going to draw them from scratch in a new file,... and then dimension them manually. Im then going to delete the dimensions and then auto it to see if it does it again. Its not like it's a a complicated drawing either!!! LOL. I'm losing it here. I'll post them when I get a chance. Maybe you guys can play around with them and figure it out. I will give it a go again later on.