Selecting the Base Part
The base part is fixed in the tolerance analysis, and from it, all remaining
parts are assembled. When you select the base part in the Assembly
Sequence PropertyManager, consider which part should establish
the coordinate system of the worst case assemblies and the directions
of measurement.
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In this example, you create a study to determine the minimum result
for the inside distance between the two vertical legs.
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The only tolerances you apply are perpendicularity tolerances to the
base. |
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These tolerances result in this worst case part. |
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Base part = left leg |
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Base part = center base |
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Base part = right leg
In each case, the base part remains fixed and oriented to the assembly
coordinate system and the measurement remains along its X-axis.
The results vary by a spread of 2. |
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