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Subject Knowledge Booster Course
an introduction to CAD/CAM
John Lee / Jenny DeinJanuary 2008
SKBC : CAD/CAM
aims:
to consider the increasingly important role of CAD and CAM in the fields of industry and commerce
to develop personal capability in the use of a range of CAD and CAM applications
to explore a range of designing and making strategies that make appropriate use of CAD and CAM
CAD or computer aided design is the process of creating industrial product designs using computersoftware
CAM or computer aided manufacturing uses computers to programme these designs into equipmentthat will actually manufacture the products.
http://en.wikipedia.org/wiki/CAD
what is CAD/CAM?
CAD/CAM increasingly central role in design and manufacture
increasing ‘customisation’ of products and reduced ‘time to market’
the shift towards a ‘concurrent engineering’ philosophy
development of rapid prototyping techniques eg: stereolithography / laminate object modelling / digital printing
concurrent engineering
case study in concurrent engineering:
Virgin Voyager – the ‘virtual train’
Bombadier Transportation (in world’s top 40 most successful enterprises)
client – Virgin Trains : Project - ‘Voyager the train for the 21st century'
design team – 5 sites in 4 European countries
project design managed using 3D design software, CATIA and EDM software
timescale - 2 years – delivered on time (penalty clause for non-delivery £5m / month)
definition:the process of involving all branches of manufacturing in the initial design of a product. This shortens the manufacturing cycle because all departmental needs have been considered ‘concurrently’ and, as a result, there should be no need for redesign at any stage of manufacture.
computer aided design & manufacturefundamental to company success:
case study – Polaroid
reducing ‘time to market’ avoiding the cost of ‘getting it wrong’:
Factor
design concept 1prototype 1000tooling change 100 000production change 1 000 000product recall 10 000 000
Source : Pankhurst Design and Development (PDD)
digital printinguse: digital textile printing enables the rapid prototyping of textile designs and products and eliminate the need for traditional time consuming and expensive sampling
benefits: no start up costs no minimum print run designs printed on demand quick turn around – jobs normally completed
in a week print directly onto fabric photographic image quality ideal for short print runs, engineered prints
or customised designs
example: Bar and restaurant interior schemes often require short print runs of bespoke fabric that would incur prohibitive origination charges if conventionally printed
computer aided design & manufactureconsumer markets:
case study –The Face
Users can now superimpose a photo of their own face onto their 3D virtual model. This application meets the expectations of fashion shoppers who for years have been asking for more realistic avatars. Using The Face, they can now personalize their virtual selves and achieve greater satisfaction in their shopping and social experiences. For retailers this experience is expected to drive brand loyalty, higher customer satisfaction.
Source: myvirtualmodel.com
computer aided design“even the new generation of designer modellers need precise detailed information to create a computer model. The need for accuracy frequently conflicts with the initial stages of the design process, because ambiguity and imprecision are often hallmarks of creativity”
R.Baker - designer
‘
computer aided design where & when does it start?
“basic elements of the product are still defined by conventional sketching and modelling”
Julian Thomson – Chief Designer, Jaguar Cars
CAD/CAM in schoolsDfES / DATA Initiative
Aim: to modernise the design and technology curriculum through CAD/CAM
Pro/DESKTOP (September 1999) 3D solid modelling
ArtCAM (December 1999) 3D art & design modelling
Speedstep (February 2002) textile design
Pro/ENGINEER (October 2007) engineering
design
SKBC TIMETABLE
Competence based CAD – 3D Solid Modelling (Pro/DESKTOP)
Competence based CAD – Textile Design (Speedstep)
Using CAD in presentations
Corel Draw introduction
Introduction to CAM
Supported self study
Accreditation opportunities