mandrews Posted November 17, 2016 Posted November 17, 2016 Hi all, I am a little stuck on this sheet metal part I am trying to recreate from a 2d drawing. So, the part that I am having issue on is the transition, pretty much a twist feature. This is my most straightforward approach at modeling this to match the drawing and get a flat pattern for the drawing. I was hoping that the lofted flange would take care of this situation, but find it troublesome. I have attached the part that I have so far. I left the last loft in there, that would be close to what I am trying to achieve as I believe this is what the part looks like. However, when I tried to add a bend, it errors out. If there is a better or more direct way, I'm all ears. Thanks, Matt sm-stuck.ipt Quote
mattador04 Posted November 23, 2016 Posted November 23, 2016 Man, I'd sure like to help, but this thing is weird. Can you provide a 3D image of the part? Quote
mattador04 Posted November 23, 2016 Posted November 23, 2016 Wait... hah hah... you don't have one yet... I'm just trying to wrap my head around the shape... I see some lines that I think maybe should be a hidden linetype... Quote
kpyoung333 Posted November 23, 2016 Posted November 23, 2016 That is a tricky little part indeed. The bottom and sides are easy enough, the twist is a bit annoying. I tried to use a Loft as Surface, Thicken, but it skews the edges away from the side and middle then doesn't flatten. Using a regular Loft works just fine but that doesn't flatten right either. Was thinking about a 3d sketch that could be swept along a line but now we're just getting crazy, I might try it... Attached is a good enough model that flattens but still has the little twist. For manufacturing I would use the overall length, find the angle locations and note that you need a 20° twist, not sure if inventor has capability to calculate that for sheet metal but such is life. mandrews1.ipt mandrews1.pdf Quote
mandrews Posted November 29, 2016 Author Posted November 29, 2016 This part is is tricky, I wish I had the physical part in front of me. However, it's in another location, so I have some pictures, and it definitely cleared things up for me when I saw the pictures. kpyoung333, that was the path I was going until I saw the pictures. The pictures showed me that it was a twist. I posted this over on the autodesk forum and they let me know that the twist would not be possible in inventor today. So, for the time being, I have put in a couple bends and the part will work in the assembly, but the part is not accurate. Quote
mattador04 Posted December 6, 2016 Posted December 6, 2016 Did you ever get an accurate part modeled on this? Quote
mandrews Posted December 7, 2016 Author Posted December 7, 2016 Did you ever get an accurate part modeled on this? No, I haven't put much time into this since my last post. Quote
mattador04 Posted January 31, 2017 Posted January 31, 2017 Please someone look at this model and tell me how i can get these self intersecting legs to look proper. I will send a photo of how it is supposed to look... HELP NEED ADVICE PLEASE SillPanel.ipt Quote
kpyoung333 Posted January 31, 2017 Posted January 31, 2017 Try selecting multiple face edges at once with the flange command, will give you 45° corners. SillPanel2.ipt Quote
JD Mather Posted January 31, 2017 Posted January 31, 2017 No, I haven't put much time into this since my last post. Modeling an accurate (3D) finished part is not an issue. The real issue is that Inventor will not return a flat pattern because of the twist. Quote
JD Mather Posted January 31, 2017 Posted January 31, 2017 Your Sketch1 is not fully constrained. I would have used Contoured Flange rather than Flange. Much less work and far easier to edit. Quote
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