Geometric Tolerancing 10

Geometric Tolerancing 10 - GEOMETRIC DIMENSIONING AND...

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    GEOMETRIC  DIMENSIONING AND  TOLERANCING
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    Tolerance of a  geomertic component is  associated with  size  and its variation . GDT is concerned with  the  shape  and  position   of features.
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    At the heart of GDT  is a rectangular box,  called the  feature  control frame , in  which the  tolerancing  information is  placed.
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    A datum is a starting point  for a dimension.  The surface of the object  which is placed on the  inspection device  representing the datum is  called the datum feature. These datum features are  clearly marked in the  drawings to indicate which  are the reference surfaces  to make measurements  from.
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    Geometric controls Fall into three major categories: Form Orientation Location
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    Form controls   are a comparison of an actual feature to  a theoretically perfect one. The controls  include:
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    Straightness   Straightness has two distinct  variations: 1. Line straightness 2. Axis straightness
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This note was uploaded on 04/09/2008 for the course MET 100 taught by Professor Mittal during the Spring '08 term at Old Dominion.

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Geometric Tolerancing 10 - GEOMETRIC DIMENSIONING AND...

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