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johham9 (Marine/Ocean)
14 Jul 12 5:54
Anyone who has used point cloud and can tell me how it works?
Or rather, how much data it can process without getting "confused"...

I managed to insert around 6500 points succsessfully, but it didnt manage to create any surface...More luck than skills just managing to insert the points ;) Had some corrupt data I think.

So how does NX "like" it's data? What is the perfect input? (I've never done anything like this before) In the ".dat"-file, how is the coordinates supposed to look; spaces between/commas/?

The thing is, I'm modeling a bevel gear/pinion shaft, and to get the correct geometry I'm first using becal twice, and after that some "home-made" program that "read" the geometry and creates a huge amount of .dat files. Each file contains a string of coordinates wich describing either the flank or the cross-section. And from there, I'm inserting splines through points from each file. And I've only managed to insert one spline at the time... And from there, a through curve mesh, and a wicked instance geometry, and I have a somewhat correct model. I get a small angular misinlagement, but I can survive with that...

So here's our idea: It should be possible to re-write the program so the output is in one single file, and be a clean set of coordinates. And from there, use the point cloud... But since NX is easily confused, whats the limit? How many points should I try to limit the cloud to?
How is the positioning supposed to be in the .dat file?

Or does anyone have a easier way to go?

Cheers, Johanna


johham9 (Marine/Ocean)
14 Jul 12 5:55
Btw, I'm using NX 6.0
kapmnit123 (Mechanical)
15 Jul 12 0:38
Hi Johanna,
It seems to be a set of point data only.Point cloud (.stl files are one format) once imported inside NX gets faceted and then you can use a host of reverse engineering options to create surfaces on top of it (NX Shape studio has lot of them).
Best Regards
Kapil Sharma

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