ProE Import problems.

When doing a drawing of a part imported from ProE I'm seeing lines
coming of the part. The part seemed to import all right but the
TOOLS/CHECK reveals 3 general faults. Anyone have this
problem/solutions.

 

You have to manually remove the faults and replace those surface(s) and knit
the solid back to gether and turn it into asolid.

Regards,
Scott

 

Alan,

Allot depends on the accuracy of the Pro-E part. Solidworks does everything
to a fixed internal accuracy, this is not user configurable. Pro-E uses a
variable accuracy (part/feature size dependent) as the default. The user can
choose to use a fixed accuracy, and can specify the value. Most users use
the default mode because it's faster. In many cases, parts saved in this
format aren't accurate enough for parasolid to solve.


Regards

Mark

 

.... Solidworks does everything

Curiosity question: What is the tolerance value used?

Ditto on that. Might also be a good idea to have them make sure they can
regen the model to an appropriate (?) abs tol without creating Geometry
Checks.

 

Jeff,


Solidworks uses double precision 64 bit math, with an accuracy of 10e-8
units


Regards

Mark

 

Solidworks uses double precision

Many thanks, Mark.

Do you (or anyone) know what accuracy is used for polynomial / NURBS
intersections? This is usually a value somewhat larger than absolute
(vertex) tolerance, I think, used for complex surface intersections,
variable radius fillet edges, etc. ACIS uses a variable called ResFit
(typically 1e-3) for these calcs. Mostly a curiosity thing, but maybe
useful info for someone using Pro/E, Rhino, etc. that allow tolerance
setting.

Maybe a better question would be: What edge coincidence tolerance is
recommended for reliable translations to SW?

Thanks, again.