tolerance zone testING
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Task |
Quite often object geometries are
simply specified to stay within a given tolerance zone relative to a nominal
geometry. Such a test may be tedious and complicated. We therefore need
systems that do this automatically, without operator involvement. |
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Solution |
The Conoptica software gives
access to some powerful and easy-to-use tools for tolerance zone testing.
This is accomplished by means of the so-called Parameters Of Interest (POI)
called “Tolerance Zone” and “Min Tolerance Adaptation”. By setting the
“Tolerance Zone” as a given width, of for example 0.010 mm, it will be
graphically displayed by +/- half this width (+/- 0.005 mm) relative to
the nominal geometry. In the illustrations (see below) this zone is indicated
in red, while the measurement curve and measurement data are indicated in
blue and by black dots respectively. The “Min Tolerance Adaptation”
calculates the smallest tolerance zone that the measured geometry can
possibly fit inside. By setting up an automatic tolerance testing the value
calculated by the “Min Tolerance Adaptation” is compared with the “Tolerance
Zone” value and a go or no-go signal is issued. |
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Benefit |
By using the Conoptica setup for tolerance testing your company will
have access to a powerful tool for tolerance testing that both saves operator
time and nearly eliminates operator evaluation. By means of only two
parameters the operator may effectively specify, set up, and test complicated
geometries, without having to spend time and effort on geometrical analysis
and testing. The tolerance test is accurate and presents itself in a
graphically intuitive manner. |
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Step by Step |
A tolerance test is carried out by: ·
Adding
the two POI’s called “Tolerance Zone” and “Min Tolerance Adaptation”, ·
Setting
up an automatic tolerance test where the “Min Tolerance Adaptation”
value is compared with the “Tolerance Zone” value, ·
Starting
measurement and receiving an inside or outside the-tolerance-zone signal, ·
Observing
the cause of mismatch by magnifying graphical deviation details. |