ASCII point cloud best fit

[[Go...]]

Hello

I have point cloud from CMM inspection as ASCII (.txt) file.

How to best fit those points to the CAD after importing? Is there a way? What is the proper work process?

Also how can I re-align the CAD to different position in space? 

Is there a way to polygonise this type of point cloud?

Thank you in advance

[[Ma...]]

Do you have only actuals or nominals also?

If you want to import measured data, you have to do it in same alignment as you captured them.

I don't think you can polygonize them, but maybe i am wrong about that.

In Inspect you don't move CAD model. You only modify mesh to fit alignment.
If you need to alternate CAD model before making elements, then go to menu Operations -> Alignment -> something single and select translate or rotate.
You have to enter old point and new point. You wil have to play with it a little to learn how it works.

[[Na...]]

Hi Goce,

How to best fit those points to the CAD after importing? Is there a way? What is the proper work process?
the normal Local Best-Fit alignment works, if you select points of your point cloud like you would on a mesh, for example right click -> select all points. The point cloud might need to be aligned by an inital alignment like 3-2-1 first to get a realistic search distance in the best-fit.

Also how can I re-align the CAD to different position in space? 
There is a catetogy "single element transformation" under operations -> alignment, or you chose another coordinate sytem during CAD import. The single element transformations are not parametric like an alignment from mesh to cad and should be used at first in the project because it will later break dependencies of elements.

Example "Set matrix": ZEISS Quality Tech Guide

Is there a way to polygonise this type of point cloud?
There is a function for this: Polygonize Point Cloud
If the point cloud is polygonized the workflow is like with a mesh (STL, polygonized from ATOS, ...)

 

If you work with Airfoil inspections, there is an App with CMM workspace available, which sets up CMM data for inspection with Airfoil Inspection: CMM data preparation

 

Nanno