[Ri...] Posted April 19, 2021 Share Posted April 19, 2021 Good morning, Has anyone come across a Profile of a Line measurement that also has a reference length associated with it? It's close to a Straightness requirement with a reference length, but the Line/Curve isn't natively straight, there are three taper transitions across the surface. Any and all help is greatly appreciated. Thanks. Link to comment https://qualityforum.zeiss.com/topic/13080-profile-of-a-line-reference/ Share on other sites More sharing options...
[Jo...] Posted April 19, 2021 Share Posted April 19, 2021 Please sign in to view this quote. It has a "basic" length or tolerance ? Maybe it is a tolerance zone ? from point to point Maybe I misread that. So a tolerance per incremental distance. Like flatness with Ref ? Link to comment https://qualityforum.zeiss.com/topic/13080-profile-of-a-line-reference/#findComment-66300 Share on other sites More sharing options...
[Ri...] Posted April 19, 2021 Author Share Posted April 19, 2021 Please sign in to view this quote. Per incremental distance. I wanted to break each taper section up, so that I could just do Straightness Reference, but they are also interested in where the taper overlaps. I don't believe you can just scan 150mm section either as I believe they have to overlap, so that just turns into a nightmare of programming the overlaps. I may still just throw the whole line into a Straightness Reference and see what kind of results I get. Link to comment https://qualityforum.zeiss.com/topic/13080-profile-of-a-line-reference/#findComment-66302 Share on other sites More sharing options...
[Jo...] Posted April 19, 2021 Share Posted April 19, 2021 Can you just recall say point 1-50, then point 25-75 etc in 50 percent overlap sections with the reference tolerance ?Then report worst case. You could scan the entire length once that way. Link to comment https://qualityforum.zeiss.com/topic/13080-profile-of-a-line-reference/#findComment-66304 Share on other sites More sharing options...
[Ri...] Posted April 20, 2021 Author Share Posted April 20, 2021 Please sign in to view this quote. John, I did something similar to this that worked well. Full trace Curve, then copy that same Curve 8 times, recall feature points, limit evaluation the points you don't need (it was easier for me to look at it this way instead of guessing the point number). That was easier than I thought it would be. Link to comment https://qualityforum.zeiss.com/topic/13080-profile-of-a-line-reference/#findComment-66306 Share on other sites More sharing options...
[Jo...] Posted April 20, 2021 Share Posted April 20, 2021 Please sign in to view this quote. I had a part with a "cove" detail I used that same method. I got pretty decent results by excluding sharp corners etc that were problematic to navigate. Like you said, viewing the points makes it easier. Link to comment https://qualityforum.zeiss.com/topic/13080-profile-of-a-line-reference/#findComment-66308 Share on other sites More sharing options...
[Ri...] Posted April 20, 2021 Author Share Posted April 20, 2021 Please sign in to view this quote. What's funny is that I just had to do what you are describing on another part because of sharp edges, and for whatever reason my brain didn't not connect the two. Lol. Link to comment https://qualityforum.zeiss.com/topic/13080-profile-of-a-line-reference/#findComment-66310 Share on other sites More sharing options...
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