[Me...] Posted July 1, 2019 Share Posted July 1, 2019 Drawing specify Profile specification on Surface by refers Datum A. I measured 3 points on Surface A as specified on Drawing and set them as Datum A then measured 30 points on Surface by refer Z to Datum A. (input nominal of Z too) 1st method ,I combine 30 points to Plane (input nominal of Z too) then Select Profile then use this plane as Feature and Datum A as Reference Datum. 2nd method , I selected Individual point as Feature and Datum A as Reference Datum. The result of 1st and maximum profile of 2nd method are difference by 1st method show lower result. Which method is correct? For 1st method , I used Plane that Is it wrong? , Should I use Free Form Surface?(that my Calyso has not its) If There is not FFS , Should I use 2nd method? Link to comment Share on other sites More sharing options...
[An...] Posted July 1, 2019 Share Posted July 1, 2019 Please sign in to view this quote. Individual point means what? Is it the Maximum Point? Link to comment Share on other sites More sharing options...
[Me...] Posted July 1, 2019 Author Share Posted July 1, 2019 Please sign in to view this quote. Calculate profile of each point then Report Maximum profile value. Same as Profile of Maximum(Deviate) point. Link to comment Share on other sites More sharing options...
[An...] Posted July 1, 2019 Share Posted July 1, 2019 Think of the Radius Correction! Regarding individual points the direction of correction is parallel to the probing direction. Regarding the plane the direction of correction is perpendicular to the calculated plane. Always use the feature: PLANE.Contribution_01_07_2019_.pdf Link to comment Share on other sites More sharing options...
[Me...] Posted July 2, 2019 Author Share Posted July 2, 2019 My problem is not about Error from measuring , but problem is How to use Profile Element to show correct result. I measured such as 30 points on Flat surface with point element. I recall all points to plane. Then I calculate profile by use Plane and compare with calculated profile by each points (then select maximum value). Both result are difference , with Point , I got profile value = 2 x Maximum variation value that seams Correct with Theorem. But with plane(recall from all points) , it shows any value that be not 2 x Maximum variation value. What's wrong with Profile by plane? (or Correct) Can Plane element be used for Calculate profile(with datum)? Or must use Free Surface Form. Please advise. Link to comment Share on other sites More sharing options...
[Te...] Posted July 2, 2019 Share Posted July 2, 2019 Recall the points into a Free Form Surface to check it only to -A-. In Calypso any profile that contains less than 3 datum features must me done with free form or curve. Link to comment Share on other sites More sharing options...
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