Does SW have a Pittsburgh Joint in Sheet metal ?
No,,, there is no command for a Pittsburgh seam but you can achieve it with a "Miter Flange" or "Swept Flange". If it is something that you use over and over you could save the sketch used for these features as a block or perhaps a design library feature for various gauges. I'm sure there are HVAC software packages that will automate this but I have never used them.
There are probably several ways of approaching this in SW. You would have to pick the one that you are the most comfortable with.
Here is another using hems (a feature in SW). I found that this took a bit more thought, and for me, that's not a good option.
I ask because a sheet metal class I took uses the Pittsburg in a couple of assignments. I was going to rewrite the drawings for the instructor in SW, just for the practice and to help out the class because our class drawings where not very good.
Thank you for the info.
Dennis can you show the sketch that you used for the miter flange? None of the sketches I try are "suitable" according to Solidworks. And also can you verify the orientation of the sketch plane for the miter flange sketch?
Attach the *.sldprt of your attempt here.
I was able to finally get it. My sketch plane was at the midpoint of the edge I wanted the flange on. Solidworks wants the sketch plane to be at one end point of the edge instead. The MITER FLANGE tool is not very intuitive. But it works well. I now have to tweak the dimension set in order to get it to match the actual machine material usage. The total material added to the outside of the sheet metal shape must equal 1" of added material in the flat pattern. right now, in order to achieve that my final straight flange is longer than it needs to be. The hard part is coming up with the "deduction" from the initial BASE FLANGE/TAB because part of the seam is inside the "part size" and part of the seam is outside the "part size". Attached is the sketch dimensions I used for a Lockformer 20 GA. machine using 28 GA. galvanized steel.
The left hand end of the .32500 dimension is coincident with a sketch of the "desired" part size. The desired size is the driving relation, and the Pittsburgh joint must be linked to the "thickness" in order to maintain the outside edge relationship. The .2839 dimension is too long. In real life it is about .188 to .200 I need to use up more metal within my joint.
Retrieving data ...