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iDer BLUEPRINT
University ofHertfordshire
Engineering Design to Manufacture Through a
Virtual Environment
Engineering Design to Manufacture Through a
Virtual Environment
Dr Brian Parkinson and Paul Hudson
Manufacturing Systems CentreUniversity of Hertfordshire
England
iDer BLUEPRINT
University ofHertfordshire
The University of HertfordshireHatfield, UK.
The University of HertfordshireHatfield, UK.
De Haviland Comet DH88Left Mildenhall, Suffolk on20 Oct 1934 arriving inMelbourne 70 hrs 54 mins later
iDer BLUEPRINT
University ofHertfordshire
Definition of engineeringDefinition of engineeringDefinition of engineeringDefinition of engineering
““Creative, practical, cost-effective semi-Creative, practical, cost-effective semi-empirical synthesis process with empirical synthesis process with application of science and technology to application of science and technology to solve problems and meet needs.”solve problems and meet needs.”
Dr John Parnaby
iDer BLUEPRINT
University ofHertfordshire
Importance of engineeringImportance of engineering
Engineering manufacturing industry generates 40% of the UK’s domestic product thro’ employing 3 million out of a population of 55 million.
80% of manufactured products exported compared with 15% for service industry products.
Engineering is a wealth creator.
iDer BLUEPRINT
University ofHertfordshire
Engineering is…...Engineering is…...
• Not a science although utilises science and the scientific method
• Culturally seen as problem solving• A multi-disciplinary and cross-
functional activity• Practised in a competitive customer
and marketing environment
iDer BLUEPRINT
University ofHertfordshire
Problems teaching designProblems teaching design
• Considered as an isolated subject• Solution centred, emphasis not
placed upon understanding the problem
• Considered as producing something• Teacher needs to be an “expert” in
diverse subjects• Students working simultaneously on
different designs
iDer BLUEPRINT
University ofHertfordshire
Student groups...Student groups...
• Students often work in groups but…..– They are not domain specific
experts– They may not manage time wisely– They do not necessarily
communicate well The last minute dash design solution
iDer BLUEPRINT
University ofHertfordshire
Design decision making...Design decision making...
Spec
Concept
Detail
Proto
type
Man
ufact
ure
Time
Co
st Accumulated costs
Committed costs
iDer BLUEPRINT
University ofHertfordshire
Design decisions...Design decisions...
1937 Hindenburg airshiplanding at Lakehurst NJ:of the 97 people on board,36 were killed.
iDer BLUEPRINT
University ofHertfordshire
Requirements of the systemRequirements of the system• Experiential
– enable problem to be defined– allow possible solutions to be tried– determine an optimum solution– manage manufacture of design– determine if the design will work?
• Constraints– budget allocated to system user– time allowed to complete
iDer BLUEPRINT
University ofHertfordshire
System structureSystem structureVirtual environment system database
Design facility:specificationconcept designdetail design
Manufacturing facility:storesprocessesplanningassembly
Experts
Asking expertfor advice
Commentand advice
USERUSER
critiqueeach other
iDer BLUEPRINT
University ofHertfordshire
The experts….The experts….
BLUEPRINT is a self contained andopen-ended system, the user beingsupported by 6 domain specific experts;
iDer BLUEPRINT
University ofHertfordshire
The virtual environmentThe virtual environmentThe user has an office containingall necessaryequipment
There are alsomanufacturing facilities
iDer BLUEPRINT
University ofHertfordshire
A concurrent approachA concurrent approach
Experts are availableto assist the user
iDer BLUEPRINT
University ofHertfordshire
A questioning approach...A questioning approach...
Expert supportis always available
iDer BLUEPRINT
University ofHertfordshire
Design to manufacture...Design to manufacture...Manufacturing isconsidered during designand associated costsdetermined
The user must decide upon a process plan
iDer BLUEPRINT
University ofHertfordshire
Testing the design….Testing the design….
iDer BLUEPRINT
University ofHertfordshire
Supporting the designer….Supporting the designer….Technicalinformation
Designconsiderations
Catalogues ofbought-out parts
iDer BLUEPRINT
University ofHertfordshire
Conclusions...Conclusions...
• The BLUEPRINT system:– encourages concurrent design– supports a “questioning” approach– enables a fully detailed design– requires manufacture of the design to be
decided upon and organised– provides a valuable information resource– includes a simulated race to test the
design produced
iDer BLUEPRINT
University ofHertfordshire
Contact detailsContact details
• The iDer web site can be found at: http://www.ider.herts.ac.uk/
