Closing volume as per V4
Closing volume as per V4
(OP)
Ladies and Gents,
Have frustrated myself half to death today trying to close a volume ( as it would have been in V4 ). How do you create a solid from surface data, from Alias in this case, so that I can do boolean operations on it. It is a sym op component with an open lower face, so have created a closing face, but that is as far as I seem capable to get.
Someone please help the mouse and my hair has taken a real beating.
Have frustrated myself half to death today trying to close a volume ( as it would have been in V4 ). How do you create a solid from surface data, from Alias in this case, so that I can do boolean operations on it. It is a sym op component with an open lower face, so have created a closing face, but that is as far as I seem capable to get.
Someone please help the mouse and my hair has taken a real beating.





RE: Closing volume as per V4
RE: Closing volume as per V4
RE: Closing volume as per V4
ALIAS is a good rendering system, but as any of the Class A gurus around here will tell you, it's Class B at best.
RE: Closing volume as per V4
This works some times for me when I do Iges imports because the Close function in Part Design is more sensitive about gaps than the Join function.
RE: Closing volume as per V4
RE: Closing volume as per V4
Brandon Jacobsen
Product Design Engineer - Catia
RE: Closing volume as per V4
Close operator: an opening in the selected body cannot be closed by one single planar face. Modify the part.
And yet when I create a face to close the part it would appear that it is a planar gap left open. Am I missing something obvious or are the surfaces just bad?
RE: Closing volume as per V4
When I would eliminate most of the boundaries, I choose to "HEAL" the geometry, and at times it would not heal properly. When HEAL failed to work or JOIN for that matter, I would remake surfaces. On one occasion I made 1/3 of the parts surfaces in V5 to close the part.
It's a tedious task, however talk to some Pro/E people and they will tell you horror stories about making solids from import data. I was one of them, and V5 is a dream when it comes to something like this.
I should have taken better notes when discovering this process so I can share with the community. Unless someone has an if/then procedure it's trial-and-error.
Brandon Jacobsen
Product Design Engineer - Catia
RE: Closing volume as per V4
I think that it's never ending story how to close surfaces to solid. But here is couple tips, see the CATIA Data Exchange Interfaces Manual in Infrastructure section. There is IGES Trouble Shooting and Best Practices chapters. They have very good procedures to fix models.
Then in Join You should use in Angular Treshold field 179deg in order to avoid dublicate surfaces.
Merging distance should be little bigger than user intendet resolution field in igs-file.
In stead of selecting all surfaces from the tree, select just one surface and use G0 under RMB.
Fast way to detect if there is holes in the join, use boundary command. If the holes are in non critical area You can just use fill to that boudary (not very nice quality but ...)
BR. TPale