[Th...] Posted May 14, 2019 Share Posted May 14, 2019 Picture attached. Trying to measure a partial arc feature in the middle of two planes. I need to report its diameter, as well as the width of the intersecting points, and the location of the center point. For the diameter I've followed the cookbook and restricted X/Y for the diameter evaluation, as it's a little under 90 degrees. As for width and location, I was going to try to use a kink point construction to find the point at which the features intersect (the "peaks" on either side) and measure the distance between the two for width, and then math out the midpoint of those for X/Y location. Trouble is, the help page for kink points doesn't seem very useful, and I can't get it to report anything at all. How can I get the points I need out of this geometry?IMG_20190513_180035.jpg Link to comment Share on other sites More sharing options...
[Ro...] Posted May 14, 2019 Share Posted May 14, 2019 When dealing with small sections of features, i always go to touch points. Additionally when dealing with complex intersections and created features i try to use 2d features instead of 3d features. Example, i would use a circle and 2 lines to get that distance you are working on. I would scan 2 line segments that both end very close to the drop off point. set your speed slow and point density to maybe .005 inch or 0.1mm Then take a 6 point circle at the same X or Y as the lines and you should get a repeatable result with intersections. Link to comment Share on other sites More sharing options...
[Is...] Posted May 14, 2019 Share Posted May 14, 2019 For the width I would try with the Circle in contour best fit.. unfortunatelly the tool is very unestable and in some cases needs adjustments to obtain values... with more experience and good PCM / curve knowlege is posible to improve and stabilice the method. For the Diameter always depends of the process and the application but restriction of "X/Y" values used to give me headaches. I would contact the designer and I would try to agree something different. Link to comment Share on other sites More sharing options...
[Th...] Posted May 14, 2019 Author Share Posted May 14, 2019 Circle in contour didn't seem to be cooperating. My drawing isn't very good, but that arc is supposed to be circular, not elliptical, so there would be an infinite number of tangent points. Right now I'm trying out Roberto's suggestion of a line/circle intersection point, with a loop for repeatability checks. Link to comment Share on other sites More sharing options...
[Cl...] Posted May 14, 2019 Share Posted May 14, 2019 Use a 2d curve to measure the entire surface as its drawn, Construct (2) lines from the curve on the surfaces either side of the radius. Then you should be able to construct two kink points with the curve & lines. Link to comment Share on other sites More sharing options...
[Th...] Posted May 14, 2019 Author Share Posted May 14, 2019 A question about point recall then: my assumption is that I need to add range limits to avoid pulling the curve data from the radius and opposing line when I recall points, yes? Link to comment Share on other sites More sharing options...
[Is...] Posted May 15, 2019 Share Posted May 15, 2019 Please sign in to view this quote. Yes, that tool works very bad.. a very big gage diameter Would help to reduce the number of tangent points. Link to comment Share on other sites More sharing options...
[To...] Posted May 15, 2019 Share Posted May 15, 2019 Please sign in to view this quote. Here's a video I made that includes the topic of recalling a certain area of points https://www.youtube.com/watch?v=wDnvcBvC970&t=241s Link to comment Share on other sites More sharing options...
[Th...] Posted May 15, 2019 Author Share Posted May 15, 2019 Please sign in to view this quote. What sorcery is this. I had no idea those buttons were up there! Link to comment Share on other sites More sharing options...
[Ow...] Posted May 15, 2019 Share Posted May 15, 2019 Please sign in to view this quote. If you were a New England Patriots fan like Tom is, you'd know all the sorcery/cheating ways..... 🤣 ........ 🤣 ....HAHAHAHA Link to comment Share on other sites More sharing options...
[An...] Posted May 15, 2019 Share Posted May 15, 2019 See attached!Contribution_15_05_2019__.pdf Link to comment Share on other sites More sharing options...
[Me...] Posted May 15, 2019 Share Posted May 15, 2019 Please sign in to view this quote. Tom is a Patriots fan? Oh man. And I was really starting to like him... 🤣 On a separate topic... Does anyone know how many ZEISS measuring systems are currently installed around the world? Asking for a friend. 🙄 Link to comment Share on other sites More sharing options...
[De...] Posted May 15, 2019 Share Posted May 15, 2019 Unless I am missing something, the way I would probably accomplish this would be to make two circles (well segments of two circles) at the bottom and the top on the center section, and two planes on the angled sections. You cannot intersect a plane with a cylinder, but you can intersect a circle with a plane. I would use recall feature points on the two circle sections to re-use those points in a cylinder to get a diameter for that section. If you take a reasonable amount of points on the circles with a reasonable scanning speed, there should not be much problem finding the center points either with 90 degrees of arc unless the form of the arc is bad. For the width, I would create two intersections by intersecting the top circle and the right plane and then the top circle and the left plane. I would repeat this creating two more intersections using the lower circle. Then you can use simple distance to report the 3D distance between the two intersection points at the top and the bottom of the feature. Link to comment Share on other sites More sharing options...
[Ro...] Posted May 16, 2019 Share Posted May 16, 2019 Please sign in to view this quote. Just pick the biggest number, that strategy works well in the measurement hero thingy Link to comment Share on other sites More sharing options...
[Th...] Posted May 16, 2019 Author Share Posted May 16, 2019 Please sign in to view this quote. I can say, with confidence, that there are at least 4. Actually, just so this isn't a pointless bump: I ended up not having to inspect what I was asking about, but Roberto's initial suggestion was getting me repeatable results. Clarke's got me data out of the kink point construction where I wasn't getting anything before, although I didn't have time to tinker with it to get it more accurate. Link to comment Share on other sites More sharing options...
[To...] Posted May 17, 2019 Share Posted May 17, 2019 Please sign in to view this quote. We've actually gotten so good at it now, you can't even tell how we're doing it... GO PATS!!! Link to comment Share on other sites More sharing options...
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