I've searced the forum about this subject but couldn't find an answer.
I've searced the forum about this subject but couldn't find an answer.
So is it up to the vendor to figure out how much a flat, sheet metal surface area is required before stamping a rectangular dimple?
Yes, as a vendor we will develop the flat blank and material use requirements for sheet metal and formed parts.
Cheers,
Anna
there is 3rd party software for SW, blankworks and a couple of others.
If the emboss is far away from a free edge, only thinning could happen. So there will be no considerable change in the flat blank.
If the emboss is closer to an edge, then need to run blank predictions.
The emboss is 1.5" away from the edge but the height of the emboss is 1.0" tall. Still no considerable change in the flat blank?
Ernie,
Best to post a picture of what you have or a small sample model showing your dimple and edge. You have not given us enough info to say if it will affect the flat pattern or not.
My guess is that it will affect the flat pattern if you have a real tight tolerance on the edge of the part. You may need to stamp the emboss the edge trim after.
If you have a sloppy, loose tolereance on the edge we would let the material suck up into the boss and not worry about the deformation that you would see on the edge.
Cheers,
Anna
Anna,
Here is an iso, front & back view of the embossed part. Thicknes of sheet metal is .024"
That is not what we would consider an embossed dimple....
You will not be able to use the SolidWorks file for your flat pattern predictions.
That part will require a pretty complex progressive die to stamp. There will be a considerable amount of part deformation and material being sucked into the depression. It will require forming the cup before doing the perimeter cuts and forming the perimeter bends.
How big are those holes in the part? How many holes? What material are you spec'ing? I ask because if the hole is too small for the material thickness and material type you will pull the tips off the punches in stamping.
There will be a lot of extra material to stamp the part progressively and carry it through the tool on a coil. I would recommend you talk with the folks who will be doing your tool design and stamping for their input on your design for manufacturability.
Cheers,
Anna
Wow it’s not a just an emboss! As Anna mentioned this needs a quite bit of process planning.
I don’t know the sizes. But just looking at the pictures and comparatively 1.0” emboss you mentioned, I would say this is a part for a transfer die. After checking the blank development and other manufacturing conditions, could be a 2up prog die.
No not really because the material is stretched and would worp the material around it....this is what happens in real life so that is why SW can't flatten, just supress it or make a configuration to show the different stats.
take a hammer and try to flatten on and se what happens.