Did you know Creo EZ tolerance analysis supports Center bias and simple fit analysis?

Release: Creo Parametric 9.0.0.0

Watch a video that demonstrates this enhancement:

What is the benefit of this enhancement?
Creo introduces new EZ Tolerance Analysis enhancements that improve productivity when defining and evaluating tolerance stackups.

New Center Option to Bias Assembly Shift
User Interface Location: Assembly Shift dialog box in the stackup definition table.

When a clearance between a shaft and a hole is detected, EZ Tolerance Analysis provides multiple options to manage positional variation. By default, the shaft is allowed to float within the hole, and this variation is treated as an additional tolerance in the stackup results.

With this enhancement, a new Center Bias option is available for Assembly shift. This option allows you to eliminate the effect of positional variation on the tolerance stackup in applicable scenarios. For example, when mating parts are connected by threads that may not be explicitly modeled, the relative shift between those parts does not influence the stackup definition.

These improvements also provide greater flexibility when defining one-dimensional stackup analyses, especially for pin-hole press-fit conditions.

Simple Fit Check for Shaft-hole, Shaft-slot, and Slab-slot Clearance Types
User Interface Location:

A new Simple Fit Check stackup type is now available to quickly evaluate the clearance between two features of size. This check supports shaft-hole, shaft-slot, and slab-slot clearances and enables fast validation without considering assembly constraints.

Cross-section Plane Use for Stackup Definition
User Interface Location: The new command is available in the New Stackup dialog box.

In addition, when creating a new tolerance stackup, you can now use an active cross-section feature in the model as the annotation plane. This allows all stackup annotations to be displayed directly on the cross-section, eliminating the need to manually create datum planes.

Only an active cross-section feature can be used as a cross-section annotation plane, and it is supported for planar sections only.

Together, these enhancements streamline tolerance analysis workflows, reduce manual setup effort, and help engineers validate fit and function more efficiently.

Additional Information

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