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Ivan Irons
What
is Rapid Prototyping?
Rapid Prototyping can be defined as the
process of constructing physical objects automatically by making use of ‘solid
freeform fabrication’. The initial techniques regarding prototyping came into
being in late 1980s. They were then used for producing prototype parts and
models. In today’s world, they are being used for much wider applications. For
instance- manufacture of quality parts. This technology is used by certain
sculptors for producing complex shapes in order to display them in ‘fine arts
exhibitions’.
Origin: Rapid prototyping has taken virtual designs through ‘animation
modeling software’ or ‘computer aided design (CAD)’. Thereafter, transformation
into virtual, thin, horizontal cross-sections takes place. Each cross-section
then gets created in the physical space. This process goes on till the model
gets completed. It is better known as WYSIWYG process. Let's understand this
process in detail.
WYSIWYG: WYSIWYG as the abbreviation for ‘What You See Is What You Get’. It
is used in ‘computing’ for describing a system wherein content looks similar to
final product at the time of editing. It is generally used in word processors.
However, this use is in the form of HTML (Web) authoring. The popularization of
this phrase was carried out by the comedian ‘Flip Wilson’. His character
‘Geraldine’ used to say this very often to give an excuse against her
idiosyncratic behavior.
This expression came to be applied later to
computer-based applications as practicality in technology arrived. At times, it
is phonetically spelt as ‘Wizzywig’ or ‘Wizywig’. It has also been used as a
brand name for a ‘lighting design tool’ utilized in theatre industry to
pre-visualize the shows and 3D CAD.
The process further : The additional fabrication causes the machine to read data from CAD
drawing. After that, consecutive layers of powder, sheet material, or liquid
are laid down. Likewise, a model gets built-up from a chain of cross-sections.
Such layers, corresponding to CAD model’s virtual cross section, are then fused
automatically or joined together for creating the ultimate shape. The basic
advantage of additive fabrication goes to state that any geometric feature or
shape can be created through this.
The CAD software and machines are interfaced
by the ‘standard data interface’ in the ‘STL file format’. The function of STL
file is approximating the shape of an assembly or a part by making use of
triangular facets. Surfaces of higher quality are produced by smaller facets.
The word ‘rapid’ can be used relatively.
The construction of models using present-day methods could take time ranging
from a few hours to a few days. This depends on the technique used, along with
the complexity and size of the model. The additive systems take less time. They
can produce models within some hours. Some techniques such as ‘solid freedom
fabrication’ make use of two materials for construction of parts. The 1st
material is known as ‘part material’ and the 2nd one as ‘support
material’. The removal of support material takes place by heat. It might also
be dissolved with water or any other solvent. When it comes to manufacture of
plastic products, that too in large quantities, injection molding proves to be
a cheaper alternative.
Metro Rapid Prototyping has been in the rapid prototyping industry since it began. Choosing to work with us, you have gained several engineers on your team. Metro focuses heavily on engineering support and communication rather than just building a prototype from whatever CAD data we receive. Using this method, Metro has helped multiple companies succeed and get the most out of the money spent on prototypes.
By offering engineering support in terms of suggesting ideas or materials, only if necessary, to use for your part; we have found that customers have valued this tremendously. With well over 50 years of combined experience internally, we have the expertise available to help with your project if other prototyping facilities have difficulty.
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Come on in and learn about Rapid Prototyping! Right now PrototypeZone.com is changing over to a Free Prototyping Community
Site with Rapid Prototype Forums, Articles, Member Profiles, Learning
Tutorials and Media. I would love it if you would join the site and
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and Prototype Videos being added all the time.
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