Non-semantic 3D Annotations
- Annotations that are not defined in ISO or ASME/ANSI standards:
- Text
- Flag Note
- Note Object Attribute (NOA)
- 3D annotations where only their graphical attributes are take into account.
There is no control on attribute values. There is no control of consistency
regarding the geometry on which it is applied and the other annotations.
There is no control of the syntax regarding the standard in use.
- Surface texture
- Datum
- Datum target
- Geometrical tolerance
- Dimension
Semantic 3D Annotations
3D annotations on which attribute values, consistency with geometry and syntax are
controlled. The annotation validity is warranted along the life cycle to be reused
and well understood by other apps
like tolerance analysis, inspection, manufacturing, assembly process, etc.
- Datum
- Datum target
- Datum reference frame
- Geometrical tolerance
- Dimension
3D Annotations and View/Annotation Planes
For semantic 3D annotations rules for convenient view/annotation planes are the
following:
- Circle: diameter/radius dimension will be created in a view/annotation plane
parallel with the circle.
- Cylinder: diameter/radius dimension will be created in a view/annotation
plane perpendicular with the cylinder axis or containing the cylinder axis.
- Cone: angle dimension will be created in a view/annotation plane containing
the cone axis.
- Sphere: diameter/radius dimension will be created in a view/annotation plane
containing the sphere center.
- Torus:
- Torus High-Diameter, Torus
High-Radius, Torus
Small-Diameter, and Torus
Small-Radius dimensions will be created in a
view/annotation plane containing the torus axis.
- tube diameter/radius dimension will be created in a view/annotation
plane perpendicular with the torus axis.
- Tab/slot: dimension will be created in a view/annotation plane perpendicular
with the planes.
- Cylindrical Tab/slot: dimension will be created in a view/annotation plane
perpendicular with the axes or containing the axes.
User Surface
Depending on the way the parts or products have been designed the surface to be
considered can be made of one or several geometrical elements.
Group of Surfaces
A group of surfaces is a set of user surface or group of surfaces. It is used to
model Tab/Slot, Profile and Pattern features as defined in standards.