[To...] Posted March 31, 2020 Share Posted March 31, 2020 I am measuring a circle on the right side using my 5 -X styli and CP+X. From the video, you can see that the probe moves in the +Y direction, along the +Z CP until a certain point. Then, it angles in but as you can see, it starts at the 3 o'clock position. Any thoughts. I've tried several different iterations of my BA with the same results. Any thoughts? https://youtu.be/a-K4iZ4EB-U Link to comment Share on other sites More sharing options...
[SH...] Posted March 31, 2020 Share Posted March 31, 2020 Please sign in to view this quote. May I know what is your base alignment algorithm?? It moves in particular angle that means your base alignment aligned to that particular angle. I think some problem in your base alignment....it is a cad model programme?? Link to comment Share on other sites More sharing options...
[Th...] Posted March 31, 2020 Share Posted March 31, 2020 Is this some internal software interpretation of 'shortest path' navigation? This happens to me sometimes when I use a horizontal stylus to probe a surface from the bottom, but it's not a navigation hazard, so I haven't done any experimentation to pin down the conditions for it to happen. Since it still respects the clearance cube and measurement strategy, I've just let it do whatever. Link to comment Share on other sites More sharing options...
[To...] Posted March 31, 2020 Author Share Posted March 31, 2020 My stylus system only used 2, 3, 4 and 5. As a test,I temporarily added a stylus for the 1 -Z position and qualified it. Then, I removed the physical stylus but left it as part of the property of the stylus system. Now, everything works the way it's supposed to work. Shabu, First iteration of BA was the OD cylinder as Spatial, X/Y origin, Symmetry Plane from front and back planes for Planar and a Point on top for Z origin. YZ projection of symmetry plane was within .05° of the OD cylinder. Next I used the symmetry plane for my spatial and Y origin, the OD cylinder for my planar and X origin and point on top for Z origin. No difference in approach direction of circle. Also scanned a 2d line along the bottom of the horizontal hole, it also caused the approach to come in at a similar angle. So, I think the 4 way star with no down probe was causing an issue though I've never seen that behavior. Now, with what I call a "ghost probe" in the -Z direction, it works exactly like I would expect. Maybe someone Link to comment Share on other sites More sharing options...
[Th...] Posted March 31, 2020 Share Posted March 31, 2020 Please sign in to view this quote. Looks like Big Stylus got to Tom before he could impart his secrets. That's an interesting behavior, though. I'm used to seeing that sort of movement because our horizontal has never had a defined #1 stylus. If I weren't busy doing decidedly non-CMM inspections, I'd like to test it. Link to comment Share on other sites More sharing options...
[SH...] Posted March 31, 2020 Share Posted March 31, 2020 Please sign in to view this quote. I think your base element is not perfectly constrained ,the vector direction of the cylinder axis and the symmetry plane look like in same direction according to your explanation. Measure 2d line parallel to y axis in any face then rotate to it. Link to comment Share on other sites More sharing options...
[To...] Posted March 31, 2020 Author Share Posted March 31, 2020 Please sign in to view this quote. Link to comment Share on other sites More sharing options...
[To...] Posted March 31, 2020 Author Share Posted March 31, 2020 As a test, I removed the ghost probe and the behavior came back. Link to comment Share on other sites More sharing options...
[SH...] Posted March 31, 2020 Share Posted March 31, 2020 Ok I mistaken your bae alignment, it looking good, it can be problem in CAD model simulation. Your simulation moves in same angle?? Link to comment Share on other sites More sharing options...
[To...] Posted March 31, 2020 Author Share Posted March 31, 2020 Please sign in to view this quote. Not working in simulation. See youtube video in earlier post below Thank you for your approval of my alignment Link to comment Share on other sites More sharing options...
[SH...] Posted March 31, 2020 Share Posted March 31, 2020 Please sign in to view this quote. I had your video,During navigation calypso select the shortest path, that might be the reason for selecting Y Plus instead x plus clearance plane. I have no idea why it moves in a particular angle, I had this like problem earlier my CAD model was flipped, then corrected it by using cad model transformation. Link to comment Share on other sites More sharing options...
[Ri...] Posted March 31, 2020 Share Posted March 31, 2020 I think that I ran into something like this myself when measuring a stepper gauge in the the YZ Plane. It kept wanting to go to the +Z first before going to the +X and measuring the features. I eventually just had to modify my Clearance Cube to allow it to get the top of +Z. What was even more strange was if I stopped the program, and then told it to continue, it would work correctly. Very strange. I don't know/think this is your issue, but my point is that I've seen it do weird things when in the YZ/XZ Planes. I just chalk it up to Calypso does what it wants to do. Link to comment Share on other sites More sharing options...
[An...] Posted April 1, 2020 Share Posted April 1, 2020 Please sign in to view this quote. Can you affirm by the probe data? see attached.Contribution_01_04_2020_1.pdf Link to comment Share on other sites More sharing options...
[To...] Posted April 1, 2020 Author Share Posted April 1, 2020 Please sign in to view this quote. I thought this might be the problem. We know when a program finishes, the stylus automatically moves to the +Z clearance plane which means when I execute the feature again, if another stylus was still in the clearance cube, Calypso would automatically move out of the clearance cube before executing the feature. However, if I manually move the stylus system well above the cube, this exit move should not be necessary but it still does the same move. It only behaves normally (or what I presume to be normal), when there are values for a stylus in the -Z direction. I don't think I've ever seen this behavior in previous set-ups. Andreas, are you suggesting that if my stylus system is 100mm above +Z clearance plane, the navigation in your attachment still occurs? Link to comment Share on other sites More sharing options...
[To...] Posted April 1, 2020 Author Share Posted April 1, 2020 Quick update. The same motion occurs in Planner. Link to comment Share on other sites More sharing options...
[An...] Posted April 1, 2020 Share Posted April 1, 2020 Please sign in to view this quote. Well, it's a cooperation of the "critical" probe #4 and the "working" probe #5. But in general I am not very sure. Would like to see if any of the very experts from DELAWARE are willing to chime in.Contribution_01_04_2020_2.pdf Link to comment Share on other sites More sharing options...
[To...] Posted April 1, 2020 Author Share Posted April 1, 2020 Please sign in to view this quote. I just went into stylus system management in Planner and edited the z value of the #5 -X stylus to be more negative than all of the other probes and the motion was still the same. hmmm Link to comment Share on other sites More sharing options...
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