topic Re: Sheet Metal Question in Inventor Forum

Sheet Metal Question

NorfolkSpecialties — Fri, 11 Oct 2019 14:53:26 GMT

Is there a way to change the size of this relief hole. Or change the formula it uses to make the hole smaller.

SEE ATTACHED

Thanks

Re: Sheet Metal Question

JDMather — Fri, 11 Oct 2019 14:57:50 GMT

Sheet Metal Styles Editor.

Zip and Attach your file here if you can't figure it out.

But it appears to me that you already have as small as the fillet, so logically, it could not possibly be smaller.

Is it your intention to change the shape of that corner?

Re: Sheet Metal Question

NorfolkSpecialties — Fri, 11 Oct 2019 14:59:49 GMT

Part Attached

Re: Sheet Metal Question

JDMather — Fri, 11 Oct 2019 15:20:52 GMT

Does the design require Round Corner Relief, or can it be Tear?

Also, are you aware that there is a "strange" arc in your Sketch1 and that Sketch8 is "sick"?

Re: Sheet Metal Question

NorfolkSpecialties — Fri, 11 Oct 2019 16:02:08 GMT

Yes it must be round. That is the way our fabrication department wants it.

No i did not see the bad sketch this is a customers solid i am modifying the corners on.

But I do believe i have found a work around to get the results i want.

Re: Sheet Metal Question

NorfolkSpecialties — Fri, 11 Oct 2019 16:31:23 GMT

OK so I guess my results are not what they want.

Per the sample parts I attached.

So they want the hole radius relief to be the same as the mat thickness (20ga (.036) ) and the inside bend radius to be what the material is thickness(.036).

Question and maybe this is just not doable with inventor but the smallest hole relief i can get from it is a .050 radius. Witch I was wondering if there was a way to modify its formula it uses.

Re: Sheet Metal Question

JDMather — Fri, 11 Oct 2019 16:56:54 GMT

The thing is - I am reluctant to ~~touch~~ attach this part as the other sketches do not look logical to me.

I would expect those to be corrected before any other considerations.

I did get the relief to .036, but I would go back to the beginning and question everything else about this part.

Re: Sheet Metal Question

NorfolkSpecialties — Fri, 11 Oct 2019 18:09:50 GMT

I believe this part is now corrected.

Re: Sheet Metal Question

JDMather — Fri, 11 Oct 2019 18:38:02 GMT

What is the purpose of the arc in Sketch1?

Are you confident of the location of this hole (off-center, both horizontally and vertically to 4th decimal place (can't be measured in the real world))?

Re: Sheet Metal Question

NorfolkSpecialties — Fri, 11 Oct 2019 20:23:34 GMT

I just need help with the corner reliefs.

I attached a Simple part with nothing else on it.

Re: Sheet Metal Question

johnsonshiue — Fri, 11 Oct 2019 22:54:52 GMT

Hi! I am sorry if I misunderstood the request. The corner relief placement type is set to Vertex. Are you looking for "Intersection" (where two bend lines intersect)? Is it what you wanted?

Many thanks!

Re: Sheet Metal Question

NorfolkSpecialties — Sat, 12 Oct 2019 12:56:13 GMT

I did want intersection I did not realize it was set to Vertex Witch actually makes it a bit worse. What I am trying to achieve is a smaller sized relief hole. What were a trying to do is we want the relief hole radius to be the same as the thickness of the material we are bending. Also keeping the inside bend radius the same as the material thickness as well. We would like to run this formula across the board for all of our materiel thicknesses.

So on the attached sample part I would like to do a .036 bend radius with a .072 dia relief size in the corners and keeping the miter gap to .001 basically nothing.

But when you input those numbers it dose not give you a nice circle on the solid. if you increase the relief hole to .120 it will give you a nice hole but that is to large.

My main reason for trying to get inventor to do what I want is so I dont have to go and edit it in AutoCAD as a 2d part before it goes to the laser cutter.

And maybe this is all out of the specs of what inventor is set up to do.

Re: Sheet Metal Question

JDMather — Sat, 12 Oct 2019 13:23:29 GMT

@NorfolkSpecialties wrote:

1. I would like to do a .036 bend radius with a .072 dia relief size in the corners and keeping the miter gap to .001 basically nothing.

2. And maybe this is all out of the specs of what inventor is set up to do.

1. Done (see image).

2. Done in Inventor (see image).

.072 Diameter Relief

Re: Sheet Metal Question

NorfolkSpecialties — Sat, 12 Oct 2019 15:06:03 GMT

JD do you mind sharing how you did it because for some reason I can not get it to do that.

Can you attached the solid so I can see what you have selected.

Thanks for your help.

Re: Sheet Metal Question

johnsonshiue — Sat, 12 Oct 2019 15:14:43 GMT

Hi! I think I know what you want. The small round relief can only show on flat pattern. On the folded part, the small relief requires complicated deformation, which is omitted. Check the flat pattern. You should get what you want. Many thanks!

Re: Sheet Metal Question

JDMather — Sat, 12 Oct 2019 15:17:02 GMT

I noticed that the first sketch of your new example was not constrained symmetrical to the origin.

You didn't confirm position of the hole in previous problem.
(I didn't even get to the second set of holes yet.)

I generally lock down the foundational features before continuing on to more complex features.

If this stuff isn't important to you - then I will move on and let others continue the discussion.

BTW: There are no special editing tools in AutoCAD that Inventor does not have for this purpose.

Re: Sheet Metal Question

NorfolkSpecialties — Sat, 12 Oct 2019 15:37:27 GMT

JD I was using a customers part I dont generally go through there solid and fix everything wrong with it. But maybe I should start looking them over.

I created a new sheet metal part to use. I believe there are no issues with this one.

Re: Sheet Metal Question

NorfolkSpecialties — Wed, 16 Oct 2019 15:15:17 GMT

JD can you share how to got the corner to work.

I am probably missing something easy but i still haven't narrowed down what to do to get it to the numbers I am wanting.

Re: Sheet Metal Question

NorfolkSpecialties — Wed, 23 Oct 2019 20:58:37 GMT

Did I miss something on the thread you were helping me with. You said (massage 13)you did get the corner relief to work the way I was wanting but you never did share how you did it. I know you were on me about issues with the solid and I understand that. Going in to this thread I did not know they were there because I do not go looking it over I just wanted to change the corner and move on with the project. I dont know if I made you mad over this whole deal but was not trying to. I did supply a new solid to use that was good as far as I could tell. But then every one just left me hanging.

Do mind helping with this corner deal because I really would like to know how you were able to modify the corner to my Specs

Thanks

Matthew