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Command Activation
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Measure→Slot / Web |
| Keyboard |
Main Menu |
Definition
Slots and Webs consist of hollow or solid spaces between parallel planes. The Slot /
Web routine is only capable of measuring slots and webs whose boundary planes are parallel
to PCS base planes. The Slot / Web routine determines the width of the feature and its
center location in either X, Y or Z direction relative to the current PCS Origin.
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figure 1,
First Point Direction |
To measure a Slot or Web, press the < , > key. Geomet will respond with the
direction selector, see figure 1, unless
Auto-Direction is active. Choose the
appropriate probe direction. The Slot / Web feature will automatically reverse the probe
direction for the second point at the time of capturing the data points. For example, if
you request a -X direction, that will become the required probing direction for the first
point. The second point will then be captured in the +X direction.
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| figure 2, Slot / Web |
In the example shown in figure 2, we will take a -X data point inside the slot
followed by a +X data point opposite the first data point. Geomet will calculate the width
and centerline of the slot and project the centerline to the PCS X Axis.
| NOTE: If Auto-Direction is turned on it is possible
to measure 2 data points in the same direction such as a step. For example, establish a
PCS by choosing ICS→PCS followed by a -Z point on the surface plate and set the Z
origin. Place a 1.000" gage block on the surface plate and measure a Slot / Web with
Auto-Direction turned on. Take a data point on the surface plate followed by a data point
on the top surface. The reported values will show the Width as 1.000" and the Z
mid-point at 0.500". |
It is important to note that slots and webs that are not parallel to the PCS base
planes will report erroneous data and should not be attempted.
Tolerance
Tolerance of Slot/Web is available only in Cartesian /
Linear format.
A
Slot/Web feature can be recalled as a 1D Point for use in
constructions or as a PCS component. When recalling a Slot/Web, a
selection dialog will be displayed that allows to to choose:
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Figure 3, Recall Selection Message. |
Recall the Slot/Web as a standard Slot/Web feature.
Recall the Slot/Web extracting only the 1D reported position as
a 1D Point.
Abort the recall operation.
NOTE: Recalling a Slot/Web into a different PCS than it was
originally measured or constructed in will result in a new projection into
the defined PCS base plane. Care should be taken to prevent unexpected
projection errors.
Related Procedures:
Auto-Direction,
Origin,
System Options,
Introduction to Tolerance,
Tolerance Slot/Web,
Motion Edit,
Disable Motion,
Projection Errors,
Measuring with Multiple Styli
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