Transcript POLY JET PROCESS - ROYAL MECHANICAL

POLY JET PROCESS An effective RP Technique for
Sheet Metal Works
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RAPID PROTOTYPING
Rapid prototyping is a layer -based fabrication that
quickly create physical objects from CAD data
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Technology Overview
•These tools range in cost from $30,000 to $800,000
•>$100K are typically called rapid prototyping systems
•<$100K are usually called 3D Printers
• There are significant differences in speed, cost of operation
and materials used. These differences drive different firms to
make different choices for different use occasions
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Different types of RP methods
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The Poly jet process
Stereo lithography (SLA for stereo lithography apparatus),
Selective laser sintering (SLS),
Fused deposition modeling (FDM),
Laminated object manufacturing (LOM),
Inkjet systems and three dimensional printing (3DP).
Solid Ground Curing
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Basic process
3D CAD modeling
Convert into STL
format
Check STL file and
fix if necessary
Slice model into
layers
Produce physical
part
Remove support
structures(if any)
Post processing
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THE POLY JET PROCESS
The Poly Jet 3D printer rapid
prototype system deposits
liquid acrylic photopolymer
through nozzles to produce
plastic 3D models for
concept analysis, functional
prototypes, silicone and
urethane molding, and end
product use.
The Poly jet 3D printer uses
acrylic and flexible rubberlike photopolymers that are
cured to solids via exposure
to ultraviolet light
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RAPID PROTOTYPING TECHNIQUES TO
MANUFACTURE SHEET METAL
• By using Rapid Prototyping Techniques (RPT) car manufacturer today
produce plastic parts for Prototypes faster and even cheaper compared to
the techniques used up to now.
• As well metal parts made either by RPT combined with metal casting
processes or by poly jet, are inserted earlier as usual into dummies and
tests.
• As a consequence of this process the automotive industry increasingly
demands to have sheet metal parts also earlier than now at their disposal.
• Sheet metal forming tools are geometrically complex, massive and
require a high surface quality. The material must be stiff and resistant to
pressure and wear.
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SLR cover
Complicated angle of 45 degrees
0.8mm Thickness
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SLR cover
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A complicated shapes Motorola cell phones which can
only done by RP technique
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Advantages of Rapid Prototyping process
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It can do any intricate shape
Good surface finish
No material waste
Less time
Poly Jet Advantages
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High quality
Highly accurate
Fast
Versatile
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Medical Applications
• The fanciful image shows the possibility
of printing or fabricating human hearts.
This heart here shows the stepping stone
to the next Gen extreme complex yet
realistic models, which will be a boon to
the Medical field.
• Mandible bone built by ZCorp 310
machine (Poly jet process)
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Conclusion
• Finally, the rise of rapid prototyping has spurred progress
in traditional subtractive methods as well. Advances in
computerized path planning, numeric control, and machine
dynamics are increasing the speed and accuracy of
machining
• For certain applications, particularly metals, machining
will continue to be a useful manufacturing process. Rapid
prototyping will not make machining obsolete, but rather
complement it.
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26-02-2010
DMS SVH College of Engineering,
Machilipatnam
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Any
Suggestions
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