RAPID PROTOTYPING
This document provides a detailed
description and a brief understanding about the rapid prototyping.
THEME: Enhancing the detailed importance and need of RAPID
PROTOTYPING in the society.
Introduction
Rapid
prototype is an excellent output from the thirst of millions of scientist , the
main promotion of the model lies in its skill where it reduces the time for
experimenting an model without much cost and effort.
DEFENITION
ORIGIN
Rapid prototyping is the
automatic construction of physical objects using additive manufacturing technology.
The first techniques for rapid prototyping became available in the late 1980s
and were used to produce models and prototype parts. Today,
they are used for a much wider range of applications and are even used to manufacture production-quality
parts in relatively small numbers.
WORKING
With additive manufacturing, the
machine reads in data from a CAD drawing and lays down successive layers of
liquid, powder, or sheet material, and in this way builds up the model from a
series of cross sections. These layers, which correspond to the virtual cross
section from the CAD model, are joined together or fused automatically to
create the final shape. The primary advantage to additive fabrication is its
ability to create almost any shape or geometric feature.
The standard data interface between CAD software and the machines
is the STL
file format. An STL file approximates the shape of a part or assembly using
triangular facets. Smaller facets produce a higher quality surface.
INTERFACING
The standard data interface between CAD software and the machines
is the STL
file format. An STL file approximates the shape of a part or assembly using
triangular facets. Smaller facets produce a higher quality surface.
SIGNIFICANCE
Rapid
Prototyping has also been referred to as solid free-form manufacturing,
computer automated manufacturing, and layered manufacturing. RP has obvious use
as a vehicle for visualization. In addition, RP models can be used for testing,
such as when an airfoil shape is put into a wind tunnel. RP models can be used
to create male models for tooling, such as silicone rubber molds and investment
casts. In some cases, the RP part can be the final part, but typically the RP
material is not strong or accurate enough. When the RP material is suitable,
highly convoluted shapes (including parts nested within parts) can be produced
because of the nature of RP.
HELPFUL
AREAS
Used in in-house utilities
Used in comparative analysis
Used in
comprehensive testing
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TECHNOLOGICAL INNOVATIONS
THAT OVERTOOK THE DIFFICULTIES AFTER THE INVENTION OF RAPID PROTOTYPE
BEFORE AT PRESENT
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An complete model is done for
experimental and for a testing purpose
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Just an prototype is desingned so that
it can be tested and can be used for the consultation of betterment
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An extensive time period is spent in the
dept of testing
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A lot of time and power has been saved
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Cost of production is increased which
reduces its popularity.
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Cost of production is much reduced.
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In case of difficulty in the existing
model it cannot be replaced immediately with out complete comprehensive test
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In case of any difficulty it can be
easily verified and also can be rectified using the designed prototype.
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If the tested model is failure due to
some design model it is not that easy to create such an another model
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But in the prototype it is much easier .
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Good
prototype model
OLD
METHOD OF TESTING
Modern
ways of testing
PROTOTYPE’S
SIGNIFICANCE:
Increasingly companies are
attaching greater importance to the need to differentiate their product and
service offerings in order to remain competitive. Typically, firms are:
adding new
technologies to our products to differentiate;
forming
alliances with our customers;
adding service
features to our manufactured product offerings;
reducing time
to market for new products;
reducing the
number of suppliers and forming longer-term relationships and alliances with
those that remain;
expanding the
product range; and reducing their cost base to become the lowest cost producer.
MAIN
DISADVANTAGES OF RAPID PROTOTYPE :
When dealing rapid
prototyping technologies, seven major strategic issues need to be explored
The strategic
nature of the technologies - aspects of rapid prototyping which take investment
decisions beyond the realm of short-term return on investment calculations;
The
technologies as enablers of new strategies - the new business and marketing
strategies that can be pursued as a result of using these technologies;
The impact of
rapid prototyping on the achievement of business objectives - the specific
business objectives that can be directly affected by applying the technologies;
Strategic
aspects of organisational and cultural changes - what organisational and
culture changes does the business strategy itself demand;
Development of
change competencies - applying rapid prototyping technologies to achieve
operational change competency, and developing tactical and strategic change
competencies to enable continuing developments in rapid prototyping to be
deployed to satisfy existing business objectives and to develop new strategies;
Development and
exploitation of knowledge - using existing knowledge and developing new knowledge
for competitive advantage.
WHY WE NEED IT:
The sale of this product with others because it is much
easier to see if there are problems with the design and organization of a real
working model
It is also much easier to sell to potential customers when
they have a rapid
prototyping to hold and
manipulate a presentation marketing.
Without a
prototype is just an idea.
It can be
difficult to get a client to participate in a purchase of one concept.
With prototype in hand, the concept becomes real and the
moment is much easier .
We should keep in
mind during the prototype phase as well. Regardless of how developers and
testers that a prototype can be, consumers may not real, as some of its
aspects.
If the end
customer does not like, they will not buy, which explains why the focus groups
and external tests with the prototypes to be addressed before production
begins.
Patent If a
product is new or unique bit excessive, patents must be considered.
It is useless to design and produce a great product to
another company only begins to produce a product very similar, because the
original company patented key design elements.
Having a working prototype is much easier to sit with a
lawyer to see what aspect of the design may be patentable.
On the back, you
can see parts of the prototype and the design of infringing patents of others
and how they can be changed before production, and the possibility of a trial
begins.
BASIC LEVEL OF A COMPLETE PROTOTYPING MODEL AND A FLOW CHART
SCENARIO.
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INCONVINIENCE IN
USING RAPID PROTOTYPING MACHINE:
Needs co
operation of workers to finish an complete model successfully.
Higer
officials may consider prototyping as an wasteful needed process
Programmer may
loose discipline
The prototype
may influence the design
The
pror=totype model may be overworked.
LUXURY OF PROTOTYPE
Unattended operation
This system is
fully automated that is doesn‘t require any attention
during the
operation.
Good accuracy
The SLA able
to produce a very high accuracy
˜
0.001“
High detailing
SLA is capable
of producing an intricate design with high precision.
Surface finish
The —printed
part“ has a very smooth surface.
Industry presence
SLA was the
first RP to be introduced into the market. It constituted
1% of the
worldwide market based on sales.
The part may
melt if exposed to high temperature for a period of time.
Influence of design by rapid prototype
The prototype may have an influence on your design
which should be taken care of.
A
GOOD MODEL
AN
AVERAGE MODEL
STEPS TO REDUCE THE ABOVE
MENTIONED INCONVINIENCE:
The material
chose should be apt and easily adoptable.
The material
chosen should always be in an position to be cooled fast by the cooler used.
The
complication of the prototype should be reduced in the stl files used.
CONCLUSION:
Henceforth
being well aware of this engineering excellence of a rapid prototype , being an engineer we should be well enough
acquired to readily accept the advancement in such area which would greatly
enhance our career.
