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Bend in rolled sheet metal
bill_daniels
Member Posts: 284 ✭✭✭
Bends in flat sheet metal work great but what about bends where a rolled section transitions to a flat section? I can't seem to make that work.
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Answers
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@bill_daniels
Please see two examples.
If this does not help, publish a link to your document - some-one would help you.0 -
Like this?
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I had to start by manually adding in the cut reliefs:
Then I would be able to add a flange
Sometimes you will need to switch inner/outer0 -
Actually, I'm not trying to add a flange. It's more like a transition to a flat section which will have still more 90 degree bends. I'll try to post a link to the document in my next post.0
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This is the part
https://cad.onshape.com/documents/410b96f2236fdf1c3c3f53ec/w/382ea78034518f2c0ddf54ed/e/29cb2242c7f0c240dab7b042
The 3D part and the flat sheet metal seem to work in the part studio but the drawing of the flat sheet doesn't include all the bends.0 -
@bill_daniels
Try showing tangent lines in the drawing view
EDIT: Select the arc that should be a bend in the "Arcs to extrude as bends" selection box0 -
So, I have the 3D model correct and the flat sheet metal view correct. But, when I try to create a drawing, it doesn't come out right. Interestingly, the phantom view I see just before I click to place the view on the drawing sheet, is also correct but when I do click, bend lines disappear leaving me with a drawing that can't be used. I've run out of options.0
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You may want to submit a bug report0
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@bill_daniels I assume you are looking to have the bend line where the large radius begins show up.
The manual way I can see to put this is to show the tangent lines on the flat pattern in the drawing and then make a center line between the tangents to get that bend location. I made a copy of the document showing what I did:
https://cad.onshape.com/documents/ce6d0a683e96e0ffd591886e/w/45b6a3e4130879da5170a1c9/e/b5cc1b7fb38520fbfc703ff7
When making large radius in a sheet metal part and I do not have a tool to do it on the press brake or need to make a slight bend at the tangents to note start and stop of where to roll the radius I show the tangent lines and dimension to them.
Hope this helps
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@bill_daniels
The arc that should be a bend (with a bend line) should be selected in the arcs to extrude selection box when you create your sheet metal model.
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mbartlett21, The arc IS selected as an arc to exclude.0
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This is what the finished part should look like.
https://cad.onshape.com/documents/410b96f2236fdf1c3c3f53ec/w/382ea78034518f2c0ddf54ed/e/29cb2242c7f0c240dab7b042
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I declare this one 'smoke in the cockpit' My error was a subtle problem in the original sketch. Once fixed, everything fell into place.0
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@bill_danielsbill_daniels said:mbartlett21, The arc IS selected as an arc to exclude.
Sorry, I hadn't realised
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