HEIDENHAIN ND 1300 VED and Crosshair Systems - Manual (Page 177)

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7
Tolerancing
Circles and arcs
The tolerance screens for circles and arcs are identical, and are used to specify the acceptable deviation
from nominal positions in the X and Y axes, and from the nominal diameter or radius. The bidirectional
tolerance compares the measured location of the center point of the arc or circle to the nominal center point
and compares the measured diameter or radius to the nominal. Touch the D (diameter) or r (radius) choice
field in the DRO screen to toggle between the display of diameter and radius if desired.
Enter the nominal values into
the X and Y axis and D (diam-
eter) data fields provided. Enter
the allowed limits into the Limit
data fields as +/- ranges or as
absolute limits. Touch the Limit
data fields to toggle between +/-
ranges or absolute limits.
Slots and rectangles
The tolerance screens for slots and rectangles are identical and are used to specify the acceptable deviation
from nominal positions in the X and Y axes, and from the nominal length and width. The bidirectional
tolerance compares the measured location of the center point of the slot or rectangle to the nominal center
point and compares the measured size to the nominal size.
Enter the nominal values into the
X-Y axis and L-W data fields
provided. Enter the allowed
limits into the Limit data fields
as +/- ranges or as absolute lim-
its. Touch the Limit data fields
to toggle between +/- ranges or
absolute limits.
Tolerance Types