HEIDENHAIN ND 1200 - V2.16, Руководство по эксплуатации, Страница: 47 / 141

ND 1200 QUADRA-CHEK 47
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1.5 Creating Part Features
Created features
It can be useful to create features that are not found on the part
geometry. Created features can be used as reference points for
inspection purposes. For example, in order to measure a feature that
is referred to a point off the part geometry, the user could create the
reference point.
Users can create points, lines, circles, distances, angles, and part
skews. Created features are the same as probed features except that
the created features are geometrically perfect, so form error and
tolerance values do not apply.
Created features are not the same as constructed features, which are
discussed in the next section of this chapter. Created features are
defined by the user. For example, to create a circle, the user defines
the location of the center point and the diameter or radius.
Constructed features are built from previously measured or created
parent features. For example, the user could construct a line between
two or more points in the feature list. Constructed features can have
form errors and tolerance values.
Creating features
The method of creating a feature is identical for all feature types. To
create a feature:
U
Press the desired feature MEASUREMENT key
U
Press the CREATE soft key
U Enter the required feature data
U Press the FINISH key
An example of creating a feature is shown on the next
page.