|This task shows you how to create correlated
deviation annotations on an assembly component.
A correlated deviation annotation represents a set of measures at
specific locations in a certain directions. its values are defined using a
measurement data file.
The correlated deviation annotation of an assembly
component or support is contained in its annotation set:
The correlated deviation must not overlap with a degree of freedom used by its positioning system, therefore a point already used by a mechanical joint of the positioning system cannot be used by the correlated deviation.
Correspond to the correlated deviation annotations created on leaf assembly components or supports, they represent the input annotations or initial variation of the component before the assembly process
The variation in the degrees of freedom restrained by the positioning system is null by definition.
Reminder: a positioning system represents a set of mechanical joints for which you can lock or unlock translations or rotations.
The deviation positioning system must:
Open the BasicTaaProcess2.CATProcess document.
|In the Statistics Law
frame you can select a measurement file to define the correlated deviation
When no measures file in the Statistics Law field is specified, each point of the correlated deviation is created according to a normal law with a mean of 1mm and a standard deviation of 0.1mm.
See Measurement Data.
|Selecting the Local Deviation check box lets you take into account the deviation where it is defined or to interpolate it on the assembly component.|