About Maintaining Body Structures of Source and TIM Parts with ATB Update
When you import parts of non-native formats that contain multiple bodies, or insert the non-native parts in existing parts, the following occurs:
• Translated Image Models (TIMs) of the imported parts and import features are created in Creo.
• The multiple bodies of the non-native part models are included in the TIMs.
You can then add or remove bodies from the TIM parts and import features or the non-native source models and perform an update with Associative Topology Bus (ATB). When you perform this update, the following occurs:
• The associative update makes sure that the TIM parts, the import features, and the source models are up-to-date.
• The number of bodies is maintained in the source models and the corresponding TIM parts and import features.
You can add or remove bodies from the TIM parts and import features using options on the Import tab, and then click > to update the TIM parts and the import features according to the body options you selected on the Import tab. A description of each option and the result of performing an ATB update after you select that option, follows.
• Add Bodies—Creates and adds solid bodies to the existing part or the import feature of the TIM part.
The ATB update ensures that the body structure created in the existing part is the same as the body structure of the source model before its import. New bodies are added to the source part or part component so that the same number of bodies exist in the source models and the TIM part.
• Add Material—Merges the solid geometry of all the bodies of the import feature and includes the merged geometry in the default body of the part, or the body designated as the default, without creating additional bodies. A separate body is created with the added geometry only when you select the Create new body check box on the Body Options tab of the Import tab.
If you created a separate body with the added geometry, the ATB update makes sure that a corresponding body is added to the source model so that the TIM and the source models are up-to-date.
• Remove Material—Removes solid geometry from a body of the existing part or the import feature of the TIM part.
The ATB update makes sure that geometry is removed from the corresponding solid body of the source part or component.
• Add Surfaces—Adds the surfaces of the import feature to the part or import feature without creating additional bodies.
ATB updates the corresponding source part or component to include the added surfaces.
Similarly, when solid bodies are added or removed from the non-native source part models, you can click > to propagate the changes of the source models to the TIM parts and import features in Creo. The corresponding TIM parts and part components are then associatively updated as follows.
• If bodies were added to the source parts or the part components of assemblies, the ATB update:
◦ Creates the corresponding bodies and adds them to the TIM parts or the part components of assemblies.
◦ Converts single-body TIM parts or components to TIM parts or components with multiple bodies.
• If solid bodies were removed from the source part or component models, the associative update:
◦ Removes the corresponding solid bodies from the TIM parts or components in Creo.
◦ Converts a TIM part or component with multiple bodies to a TIM part with a comparatively reduced number of bodies, or even a single body TIM part, if all but a single body were removed from the source part.
• If all the solid bodies were removed from the source part or component, the ATB update removes all the solid bodies from the TIM part or component.
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When an associative update removes the contributing geometry of a solid body, the resultant empty body is not removed from the TIM part or component.
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• When geometry such as open or closed quilts is added or removed from a solid body of the source model, the corresponding solid body of the TIM part or component is updated to include or exclude the added or removed geometry.
• If a part with multiple solid bodies that is an intersecting or flexible component is removed in the source assembly, the corresponding intersecting or flexible component is excluded from the TIM assembly.
The associative update maintains the metadata changes of color, parameters, and transparency of the source with multiple bodies and the TIM models. The associative update preserves the geometric references and the IDs of entities such as surfaces, edges, quilts, curves, and datum features.