HEIDENHAIN IK 5293 - Manual (Page 210)

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Chapter 5 Advanced Measuring & Output
Bi-directional tolerance (circles, points, arcs, spheres)
Use bi-directional tolerance to specify nominal position and size for a selected
feature, specify upper and lower deviation allowed from nominal position and
size, and calculate pass/fail results. Bi-directional tolerance compares the mea-
sured location of a center point (on at least one axis) to the nominal location of
that feature's center point.
To perform a bi-directional tolerance
Step 1
Highlight the desired feature in the features list.
NOTE NOTE NOTE NOTE NOTE
Use only a circle, point, arc, or sphere. Bi-directional tolerances Use only a circle, point, arc, or sphere. Bi-directional tolerances Use only a circle, point, arc, or sphere. Bi-directional tolerances Use only a circle, point, arc, or sphere. Bi-directional tolerances Use only a circle, point, arc, or sphere. Bi-directional tolerances
do not apply to other types of features.
do not apply to other types of features. do not apply to other types of features. do not apply to other types of features. do not apply to other types of features.
Step 2
Click the bi-directional button on the tolerance toolbar.
Step 3
Type the nominal X and Y values for your part in the boxes as shown.