Measurement PropertyManager
The first step in creating a TolAnalyst study is to specify the measurement
as a linear dimension between two DimXpert features.
Examples
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This measurement is the overall length of the three-part assembly. |
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This measurement is the gap between a hole and a shaft. |
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You can define measurements between any of the following DimXpert features.
When the selected features are a combination of plane, line, or axis types,
they must be parallel to one another. Surface types require that you use
an exact point.
Point types: Sphere, Intersect Point
Axis types: Boss, Cone, Cylinder, Simple Hole,
Counterbore Hole, Countersink Hole, Slot
Line types: Intersect Line
Plane types: Notch, Plane, Width
Surface types: Surface
To define a measurement:
Select faces of two features for Measure
From and Measure To to
establish the measurement.
The selection of which feature
is Measure From
versus Measure To can affect the
results. 
A linear dimension appears in the graphics
area.
Click to place the dimension.
The Message
box turns from yellow to green, indicating the measurement is defined.
Select the PropertyManager options as necessary.
Click 
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PropertyManager Options
Measure From and Measure To
Selected face 
. Select faces of two features to establish the measurement.
Specify Exact Point. Directs
the measurement to a specific point on one or both features. This restricts
the computation of the worst case results to be at the specified point
instead of considering the entire boundary or axis of the feature.
The explicit point can be a vertex point or reference point (defined
using Insert, Reference
Geometry, Point). An explicit
point is coincident with the plane or axis of the feature, but is not
required to lie within the feature's boundary or axis endpoints.
These examples illustrate the use of explicit points using reference
points.
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The measurement is defined using reference points created at the top
of the two pins. |
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The reference points are placed directly opposite one another on the
surfaces of the two planes. |
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Center, Minimum,
and Maximum. Directs the measurement
to the center or edge of the feature. These options are available when
you select a feature-of-size.
Examples:
The minimum and maximum side options are supported for these feature
types:
Boss
Cylinder
Notch
Simple Hole
Slot
Width
Measurement Direction
Sets the direction of the dimension when the measurement is applied
between two axes (including slot axes).
X, Y,
and Z.
These options are relative to the coordinate system and are enabled for
each axis that is perpendicular to the axes of the features.
N.
Normal. Orients the dimension at the shortest distance normal to the two
axes.
U. User defined. Orients the
dimension along a selected line or normal to a selected planar face.
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The example illustrates two measurements defined to evaluate the offset
between two bearing bores, where one is defined along the X-axis
and the other along the Z-axis. |
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