[Me...] Posted March 26, 2019 Share Posted March 26, 2019 Good morning all, We're having issues holding a .002 profile so we've added stock to see if we can fine tune the cut on the machine in... In order to account for the stock, under Modify Nominals/in vector direction, I added the amount of stock (per side) in the Translation area. Is this a good way to do that? Link to comment Share on other sites More sharing options...
[Cl...] Posted March 26, 2019 Share Posted March 26, 2019 Just out of curiosity, what shape is the curve (straight/round/curved)? Link to comment Share on other sites More sharing options...
[Me...] Posted March 26, 2019 Author Share Posted March 26, 2019 Here's pictures of the area Link to comment Share on other sites More sharing options...
[Ow...] Posted March 26, 2019 Share Posted March 26, 2019 That's the way I'd do it. It's a good idea to do a save-as with the original curve before modifying so you have a back-up . Link to comment Share on other sites More sharing options...
[Cl...] Posted March 26, 2019 Share Posted March 26, 2019 The reason I asked what shape the curve was, what if it was on a round (OD circle) surface. Would this be appropriate to use? Link to comment Share on other sites More sharing options...
[Ow...] Posted March 26, 2019 Share Posted March 26, 2019 Clarke, yes, offsetting the vectors on a circle would work the same. Link to comment Share on other sites More sharing options...
[Me...] Posted March 26, 2019 Author Share Posted March 26, 2019 Please sign in to view this quote. I just created a new curve, kept the old one. Link to comment Share on other sites More sharing options...
[Cl...] Posted March 26, 2019 Share Posted March 26, 2019 Please sign in to view this quote. Thanks Owen, I just came across some reworked parts where I will need to do this. Link to comment Share on other sites More sharing options...
[Ro...] Posted March 27, 2019 Share Posted March 27, 2019 Or you could just use a profile with a "unilateral tolerance outside" of .004, which would center the theoretical nominal at .002 plus material. Link to comment Share on other sites More sharing options...
[Me...] Posted March 27, 2019 Author Share Posted March 27, 2019 Please sign in to view this quote. This method was my first try but I didn't know exactly how to do it, thanks so much my dude! Link to comment Share on other sites More sharing options...
[Ro...] Posted March 27, 2019 Share Posted March 27, 2019 Unilateral tolerance of course is a profile with all the tolerance in 1 direction. The hard part is remembering which direction the tolerance is going to be in, because the results will always be a positive number. Think of Unilateral Outside as being outside of the cad model, or a heavy material condition. so outside profiles like the one you have will be the tolerance zone. What calypso does is to offset the nominal, so in your instance where you're targeting .002" heavy, a tolerance zone of .004 would be +material.002 +/-.002. Now if you wanted a bigger tolerance you'd have to go with Unilateral unequal distribution, and then the math gets funny, but zero will still be the center of the tolerance zone. I used to have a PDF i believe was titled "ProfileCalls" but i can't find it now that i have a new pc in the past couple months. I'm sure someone will have it and post it. Link to comment Share on other sites More sharing options...
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