Plane normal on touching surface

[[Fe...]]

Hi,

I have a question to experts to make to following:

I have a injection molded valve seat with cyllindrical surface.

I need to know the surface normal of the fitting plane. ( ...evaluate the direction of warpage )  What I did up to now:

- selected the surface from cad patches

-created a nominal plane with chebisev/ outer fit. 

- I have selected the measurement principle as fitting element.

 

My questions are:

- Is my method is good to do what I trying to achieve?

- How I can get the direction (normal vector) of the measured plane?

Thank you in advance.

 

Ferenc

 

 

[[Ch...]]

I would recommend using Gaussian best-fit (outer), since it is less sensitive on the extend of the actual selection than Chebyshev. The normal of the plane is available in any command that uses a direction by selecting it in the respective widget. For scripting (or user defined checks), the normal can be accessed via gom.app.project.actual_elements['LavalEdgePlane'].normal.