[Ch...] Posted 17 hours ago Share Posted 17 hours ago I have a problem which seems extremely simple but for some reason is giving me a ton of trouble. I am attempting to take what is essentially profile of a line around the inside of a rectangle. The issue lies in the fixturing and sharp corners requiring it to be scanned in six separate sections. I have split it up into six line scan paths and am attempting to recall them into one curve so it can be evaluated but the tolerance is getting very confused in the corners and also is interpolating my scanned points across the gaps which I do not want. I just want a profile tolerance based on the CAD model, controlled by the drf with the actual points being evaluated to it. The attached picture is a sketch of what I am trying to do, with the green being my actuals vs the closest I can get calypso to manage it. I have tried every combination of features types I can think of, 2d lines, 2d curves, 3d lines, 3d curves. Link to comment Share on other sites More sharing options...
[Ch...] Posted 14 hours ago Author Share Posted 14 hours ago (edited) I have figured out how to correctly put all the segments into one curve however I am still seeing odd behavior in the corners of the tolerance and can't get it to stop interpolating the gaps in the curve. Edited 14 hours ago Link to comment Share on other sites More sharing options...
[Ma...] Posted 14 hours ago Share Posted 14 hours ago (edited) I think you would have the best results with freeform if you have a CAD model. Just recall measured points into freeform feature. Also you can try to mask unused points, which will result in strange tolerance also, but it will be calculated. Edited 14 hours ago Link to comment Share on other sites More sharing options...
[Ch...] Posted 13 hours ago Author Share Posted 13 hours ago Please sign in to view this quote. Unfortunately my license for freeform did not get renewed so I am stuck trying manage with just curves until next cal cycle. It is just a profile of a line however so I feel like it should be simple as I have done similar with just curve no problem in the past. Its just the interruptions in the corners and fixturing that is really messing this one up. I have masked out the unused points in the best fit but they still are being interpolated and the only exclude option I see only allows for one continuous excluded section, not multiple like I need. Link to comment Share on other sites More sharing options...
[Iv...] Posted 13 hours ago Share Posted 13 hours ago How are you creating the nominals for the recalled curve? My preferred method is using the connect nominal curves (screenshot below). This will only pull the nominals; you then have to recall feature points from the curves to bring over the actuals. You can also use the "re-calculate nominal geometry" option from the recall feature points pop-up. But make sure there is no actual data in your curve since it will recall the actual for the nominal data For both methods, I would recommend using the curve results points option when recalling the feature points. Another option would be to scan over those sharp corners and mask out those points. This option can be found in the evaluation window under the limit evaluation. This looks like it would reduce the number of scans to 2. Maybe an even better option is using only one curve. Create the full curve. Expand the point list and delete the points that are blocked by the fixture. Lastly, create two segments with a clearance plane in between. Update the start and end points accordingly. This would be my preferred method since it does not involve any recall or combinations of curves. Make sure to make things easier by having the curve start adjacent to one of the fixture locations. 1 Link to comment Share on other sites More sharing options...
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