How to extract geometry from CGR model in CATIA V5?
In case you would like to extract geometry from cgr file you cannot use common tools. CGR (Catia graphics representation) file only presents the outer surface of a part or assembly. This surface is tessellated (consist only of triangles). This format is only for representation. You can use it for clash analysis, measure distances between elements, etc.
How to solve this situation? Use tool Measure Between.
First of all, insert cgr file into any Product (it is not possible to open cgr file separately). Insert also a new part.
If you want to extract a points, then select tool Measure Between.
Then measure distance between two edges. Select an option create geometry.
Geometry creation window will appear. Select an existing one option and select Part1. If you will select option Create a new CATPart under, then you can skip new part including in the beginning.
After pressing OK, info window will pop-up. Then just click OK.
Afterward creation of Geometry window will appear. Here you can choose, what you want to extract. If you will select point, CATIA will create point (one for each edge). In case you will select line, CATIA will create line.
Selected option Line (orange highlighted, without history – no parents and children):
Difference between Measure Between and Measure Item.
There is also other option how to extract points. You can use tool Measure Item. Advantage of this option is that you can extract two points from one line.
Process is same. Measure one edge and create geometry. Then Create First Point and Second point. CATIA will create points on the imaginary line (selected edge).
Extracted two points without history – no parents and children:
Even though you can extract only points and lines, you can use them to create any reference surfaces, hole axis, arc center, etc. for your work.