[To...] Posted April 11, 2020 Share Posted April 11, 2020 Hello Being quite new to Calypso and not being able to contact the local Zeiss division as they are sent home due to the current world situation I need your help. I have a part with two planes A and B which shall be combined in to A-B. A and B are angled to the rest of the part and offset between each other. Is the right solution when doing a combined plane which is not in the same level to recall features points of both planes into a new plane evaluating them as LSQ. And thats it? The result I get this way look like it could be right, but still I am not sure this is the right way to do it. Hope I got this explained so it makes sense. Link to comment Share on other sites More sharing options...
[SH...] Posted April 11, 2020 Share Posted April 11, 2020 Can you attach your drawing?? without getting some sort of idea what you are asking, it is difficult to analyse... Link to comment Share on other sites More sharing options...
[To...] Posted April 11, 2020 Author Share Posted April 11, 2020 I can't attache the actual drawing. But I can attache an image which is similar to what is on the drawing. Link to comment Share on other sites More sharing options...
[SH...] Posted April 11, 2020 Share Posted April 11, 2020 Please sign in to view this quote. Inclind Planes are your datum or horizontal?? If it is inclined, you can create a symmetry plane, that would be the better option... Link to comment Share on other sites More sharing options...
[To...] Posted April 11, 2020 Author Share Posted April 11, 2020 Inclined planes are datums and shall be a combined A-B. I really can't see how symmetry will work as a combined datum. Link to comment Share on other sites More sharing options...
[SH...] Posted April 11, 2020 Share Posted April 11, 2020 Please sign in to view this quote. That planes are not lies in a single plane, so how can you combine it, what option is used by you to combine it?? Link to comment Share on other sites More sharing options...
[To...] Posted April 12, 2020 Author Share Posted April 12, 2020 Please sign in to view this quote. The counter part os mating on both A and B, so A-B solution is right. My question is how to do this the best way in Calypso? I found the feature offset plane as well. But I am not sure how this actually work. Link to comment Share on other sites More sharing options...
[Er...] Posted April 12, 2020 Share Posted April 12, 2020 Well, it's also depend on the other datums, if any. And how A-B is used as a datum. But generally, when two or more planes needs to be combined datum, Best-Fit Geometry (or maybe its Geometry Best-Fit) many times are the best option. Link to comment Share on other sites More sharing options...
[To...] Posted April 12, 2020 Author Share Posted April 12, 2020 Please sign in to view this quote. In this case there is two more cylinders as C and D. I will try to see if I can figure out how to to use the Best fit alignment. Link to comment Share on other sites More sharing options...
[To...] Posted April 12, 2020 Author Share Posted April 12, 2020 Please sign in to view this quote. Geometri best fit seems easy to use, assuming I am doing it right. Pick all the features that is supposed to be used and hit OK. But the order of DRF is not anything it takes in to consideration, that seem somehow right as it is a best fit. Result seem plausibel. But actually very similar to recall features points from both planes. Link to comment Share on other sites More sharing options...
[Er...] Posted April 12, 2020 Share Posted April 12, 2020 More datums isn't a problem, just place a new coordinate system in your best fit, and set element for rotation and/or origin. Does it follow all the ruels of standards? No, but sometimes you can't without going to hell and back. I find the result of the best fit to differ more from recall if the planes deviate angular. For what its worth, I have tested Geometry Best Fit against other methods of creating two plane datums more then I wish to admit. An example with pressure flanks of turbine blades. I best fited the planes of a very tall blade, measured a section at the top of the airfoil. Then i put the blade in a fixture replicating a rotor, squzed it against the prussure flanks, 3d-scanned to whole thing, measued the same section. And best fit was the closest match of all other methods i could come up with. And its was about 6-7 other that is more or less "industry standard". How ever, keep an eye of the form of the plane. "Spikes" on the surface will not make a huge impact on the best fit. But would as tangental, as it should be. Link to comment Share on other sites More sharing options...
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