[Me...] Posted June 23, 2018 Share Posted June 23, 2018 I am looking to see what others are using to check an elliptical shaped perimeter part. This part was previously programmed at the facility where I am now working. It was checked with a 2D Curve to report the profile of that circumference. I don't disagree with that method, but we now need to use 4 different 2D curves to accommodate newly added fixturing. Our 4 curves are reported independently of each other and have reasonable form error. But when I open another 2D curve and add all four from the strategy window, the result has a much bigger form error (.008" compared to .063"). I don't have much experience with the curve option, but like using it. Is there something wrong in my process when I put them all into one 'theoretical' curve or is that the incorrect method entirely? Any help is appreciated. Thanks. Link to comment https://qualityforum.zeiss.com/topic/20696-elliptical-shaped-perimeter/ Share on other sites More sharing options...
[28...] Posted June 24, 2018 Share Posted June 24, 2018 Instead of using separate curves, have you tried creating seperate segments and clearing the fixture using Clearance Data? In the curve segment you can choose from X point to Y point so you could do something like this: Clearance Data Curve segment points 1 - 300 Clearance Data Curve segment points 301 - 600 etc etc Just a suggestion, I'm not the most well versed in Curve but I've had success this way. Link to comment https://qualityforum.zeiss.com/topic/20696-elliptical-shaped-perimeter/#findComment-117684 Share on other sites More sharing options...
[Me...] Posted June 24, 2018 Author Share Posted June 24, 2018 Sounds like a good idea to me! Thanks for the suggestion, Laura. I'll give it a try tomorrow! Link to comment https://qualityforum.zeiss.com/topic/20696-elliptical-shaped-perimeter/#findComment-117686 Share on other sites More sharing options...
[Ow...] Posted June 25, 2018 Share Posted June 25, 2018 I suspect it's not filtering the points correctly when recalling all 4 into one curve .Be sure to "tick" the Connect Segments" tab in the curve filter and you may have to adjust the amount of points collected to get it to filter as needed. Link to comment https://qualityforum.zeiss.com/topic/20696-elliptical-shaped-perimeter/#findComment-117688 Share on other sites More sharing options...
[Me...] Posted June 25, 2018 Author Share Posted June 25, 2018 Laura, I tried your suggestion and it worked great! Thanks. Owen, Are you referring to the 'Take segment gaps into consideration' within the evaluation tab? Link to comment https://qualityforum.zeiss.com/topic/20696-elliptical-shaped-perimeter/#findComment-117690 Share on other sites More sharing options...
[28...] Posted June 25, 2018 Share Posted June 25, 2018 Great! Glad it was successful. Link to comment https://qualityforum.zeiss.com/topic/20696-elliptical-shaped-perimeter/#findComment-117692 Share on other sites More sharing options...
[Ow...] Posted June 25, 2018 Share Posted June 25, 2018 Yeah, I wasn't in front of Calypso when I posted that and since it's been a while I since I've worked with multiple-recalled curve features extensively, I guess they've changed the terminology a bit when setting the filters for Curve. If you have the bubble help turned on, it basically warns about deviations in gaps and to turn it on if present. Link to comment https://qualityforum.zeiss.com/topic/20696-elliptical-shaped-perimeter/#findComment-117694 Share on other sites More sharing options...
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