Shouldn't a rectangular relief have been added to edge-flange3 as it is currently modeled in the attachment? SW 2015 SP4.
In this case I would use Corner relief to achieve a better condition.
Martin thanks for the reply. But my question is shouldn't the software have put a rectangular relief here? It looks like a tear. I have auto-relief selected under the sheet-metal feature. If I select custom relief under the edge-flange3 feature nothing changes unless I alter the sketch.
This is what I was expecting to happen:
It is one of those odd things. As you can see if you set the ratio to 0.999 it's almost perfect. However set it to 1 and it disappears.
I think this one to raise with Solidworks.
Martin, even .999 doesn't work for me. According to the documentation .5 to 2 should be a valid relief ratio.
Change your relief ratio if you want to do it that way.
Edit:... The bend is too close to the first bend to use a relief ratio of 1 which you have in your file.
Nothing changes when I try changing relief ratio, or using custom relief.
I'm not sure why nothing changes on your end. Let me work on that to see if I can duplicate what you are experiencing. I added an edit to my first response. your ratio will have to be something less than 1
Thanks Dennis. I originally used .5 as the ratio and then tried increasing after it failed. See the fan plug bkt posted below for the first time I saw this happen. I didn't notice until working on the part for a while.
Nice,, I think that was clever the way you set up the edge flanges. It looks as though, in this case, that the edge flange has no choice but not to add a relief since it is on the edge of the tab which protrudes out from the adjacent edges. I think in this case I would add the reliefs in the "Sketch13" sketch or with a new cut extrude.
I have to agree with Dennis, create the relief in the cut out sketch. I've just had a play with the part and it was the only way I found to do it.
I am trying to avoid having to create a separate cut to accomodate bend reliefs as I thought that was the purpose of auto-relief.
Although, I agree with your statement that the material needs cleared out in that corner. It looks incorrect without using a corner relief as Martin and you have suggested.
BTW, I sent the fan bracket to my VAR and they agreed it should have added rect relief but they couldn't fix it either.
Thanks for the help and excellent alternative methods.
I know this is not your question but it would be a good idea to clear out that area. If it isn't cleared out the brake operator (or someone else) will have to grind or hammer the sharp edge that does not form (pull around) with the rest of the first bend.
Thanks for the info. I just also want to know why it won't change regardless of whether it is correct sheet metal technique.
I understand Roger. I suppose there would be a bunch of calculating going on if it was to work with a relief going into and around a bend.
Here is another example where it failed to add relief in btm_fanside flange and btm_opticside flange.
Thanks for the help you guys. I am beginning to think I just deluded myself into thinking this should work. The other method is just to put the bends on the outside (fan bracket part) and adjust everything else. I just didn't notice the tear until I was already done.
Yep, change the sketch, everything is fine.
must not be obsessive, must not be obsessive
Have a great weekend.
I noticed you had a .060 offset from the base in your sketched bend mod, I deleted it and reformed the flange with auto-relief set to one. Personally I prefer this relief to the ones shown here. Though if it is aluminum and welded I would tighten up the gaps.
Yes, but I can't get an auto-relief unless I edit the bend sketch. Auto-relief is set to 1 in sheet-Metal and also in the edge-flange. I just get the tear that is shown in the original post.
Roger,,, This sheds a whole different light on your issue. I thought you needed the .06 gap for some reason. Edit the flange sketch and bring the line back down to the radius flange tangent point. Edit the edge flange and check "Trim side bends. Then you will end up with what Bernie has.
Sorry to keep flogging this but I appreciate you guys helping.
I can get the corner relief if I check trim side bends. But the auto-relief is not required to get the corner both of you have posted if trim side bends is checked. I turned off the auto-relief in the sheet metal feature and in the edge-flange and the corner relief looks the same if using trim side bends.
Where I am really expecting the auto-relief to work is on the original fan bracket I posted above. I expected rectangular reliefs next to each flange. The reason for the bottom_tab_cut sketch is to create multiple edges for different flanges, auto-relief would insert rectangular reliefs instead of a tear.
If you need to .06 clearance in the tab - attached is how I would do it ...
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