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CompareVidia helps
customers to identify and manage problems related with CAD model shape changes
introduced by the use of different CAD/CAM/CAE systems. Starting from the 3D CAD
model creation, through manufacturing to long term 3D CAD data archiving
CompareVidia will trace and validate the original CAD model integrity. If
combined with QualityVidia design for CAD model quality assessment, it will
verify the 3D model quality against standards (VDA, SASIG, JAMA, ISO-EN 9300) or
user defined quality criteria.
Increase of CAD data re-use requires well defined and efficient CAD validation
procedures at different stages of the product life cycle. Capvidia has been
developing engineering software solutions for over 10 years based on market and
customer requirements. CompareVidia is best positioned to deliver solution to
customers looking for efficient way to automatically detect shape differences
between CAD models.
The CAD model validation is intended to validate 3D model integrity through
processes involving CAD data migration.
Typical application areas include: |
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Detection of changes introduced during translation, migration,
archiving or manual re-mastering
Tracking undocumented changes between design revisions
Detection of unanticipated (invisible) parametric model changes
caused by migration to other CAD environment
Detection of changes in CAD assembly structure
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CompareVidia detects
problems, often not possible for human to detect, fully automatically. CAD data
shape alterations resulting from translation, conversion, repair & healing,
re-mastering, or unintentional change are potential risk to the CAD data
integrity. If extended to processes relying on accurate model representation
(e.g. manufacturing and data exchange with suppliers) can create unmanageable
risks, potential liabilities and significant financial loses.
CompareVidia brings prediction into processes relaying on reuse of CAD data.
Implementing validation procedures at different stages of the product life cycle
management results in traceable procedures (as IS0 9001/2 standards) and
increases the global product quality. |
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| CAD Validation
Scenarios |
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Supplier Data Validation
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CompareVidia can be used to validate supplier data (using
different CAD systems) against the original design. Shape and model quality
differences are detected automatically at the user set tolerance. Not documented
design changes and model changes resulting from using different CAD environments
or CAD data format will be automatically detected. The validation procedures are
simple to implement at different stages of an engineering process both on the
manufacturer and the supplier side. All processes become transparent and
traceable.
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Manufacturing Validation
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CompareVidia validates automatically that model prepared for
the manufacturing complies with the original CAD model before the manufacturing
process is started. The smallest deviations are detected to prevent possible
manufacturing faults and inconsistencies. Only validated CAD models are passed
for the manufacturing.
The manufactured detail is usually submitted for inspection. The collected on
physical model inspection points can be compared with the original CAD model to
validate the final quality of the manufactured detail.
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CAD Lagacy Migration
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Translating CAD data from a legacy system into your current
CAD design system can introduce shape and quality changes. Independent from the
used methodology (BREP, feature-based or manual re-mastering) and used data
formats (native, neutral) CompareVidia will validate the results and help you to
define the optimal migration strategy.
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Long Term Archiving
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Before submitting 3D data for long term archiving original
models are converted into STEP format. The resulting STEP models are easily
validated using CompareVidia for compliance with the original design (CAD native
data). In addition the STEP data can be verified against standard requirements
for long term data storage (CAD model quality compliance with ISO EN 9300) using
QualityVidia.
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| CompareVidia - How it
works? |
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CompareVidia allows you
to compare two CAD models with each other. You define the Source Model
(reference model) and the Check Model (model to validate). The validation
process is controlled with user defined (Compare Settings) parameters. You can
define Global Check to verify (Volume, Area, and Centre of Mass) and Local Check
to verify the model shape. Parameters as Volume and Area are defined as maximum
acceptable deviation in [%], Centre of Mass and Tolerance are defined in length
units like [mm, inches, etc.]. The units used in the validation process are
automatically driven by the units of the Source Model. In case Source Model is
defined in (mm) the validation will be done in (mm), in case other units were
used e.g. (inch) the validation will use always the Source Model units.
The validation results are presented in the Compare Tree. You get a global
indication Passed/Failed (green/red) icon further detailed by the information
classified into folders of the project tree. In the Global Check folder you will
find the information about Volume, Area and Centre of Mass. In the Local Check
folder you will have three sub-folders: Matched Entities, Deviated Entities, and
Different Entities. In case a CAD model is not passing you will see a warning
icon attached to all entities not compiling with set validation criteria. You
can select each problematic entity in the project tree and further analyse it in
the graphical window. Two synchronised graphical windows simplify the
investigation of all identified differences. More detailed information including
entity count is also available as XML Report (Show Report). |
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CompareVidia’s Features |
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Compares total volume, area, moments of inertia and centre of mass
Detects geometrical and topological differences
Checks entitie's attributes Structurizes comparison results in groups
of the comparison tree (matched entities, deviated entities, different entities)
Clearly visualies differences on the 3D models with gradient fill
Measures deviation between corresponding entities automatically
(visualizing linear of angular dimension)
Creates correspondence map for object ID’s (in the report and the
comparison tree)
Supports verification of parts and assemblies in different CAD
formats (CATIA V4, CATIA V5, Pro/E, UGS, SolidWorks,
Parasolid, ACIS, VDA-FS, STEP and IGES)
Operates in batch mode and allows to compare two or more sets of
models
Implemented for both Windows 32 and 64-bit platforms.
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| Comparison of CAD Models |
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