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Rapid Prototyping
Team Members
08MCD002 D V SYAMALA GAYATRI
08MCD003 HARIPRANEETH E
08MCD004 HARSHA K
08MCD005 JAGADISHKUMAR R
08MCD008 JEEVA P A
08MCD009 KALLURI JAYA PRAKASH
08MCD010 LOGESH M
Introduction
• Rapid Prototyping (RP) techniques are methods that allow designers to produce physical prototypes quickly.
• It consists of various manufacturing processes by which a solid physical model of part is made directly from 3D CAD model data without any special tooling.
• The first commercial rapid prototyping process was brought on the market in 1987.
• Nowadays, more than 30 different processes (not all commercialized) with high accuracy and a large choice of materials exist.
• These processes are classified in different ways: by materials used, by energy used, by lighting of photopolymers, or by typical application range.
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Rapid Prototyping Technique
• Process Flow
3D Solid modeling
Data preparation
Part Building
Redesign
Pass
Reject
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Prototyping- What is it ?
. Physical Model of the product
. Degrees of Prototyping
. Full Complete scale Model - functional model
. Scaled Model - functional/ simulated material
. Geometrical configuration
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Prototyping- Why?
Visualization
Design Change
Complex Object Fabrication
Testing Fit/ Packaging
Cost, Time, and Resource estimation
Process Planning
First to Market -- Critical for today’s industry
JIT concept (0 Inventory)
Rapid tooling / no tooling -- trend in technology
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Rapid Prototyping Processes
SLS --- Selective Laser Sintering
SLA --- Stereolithography
LOM --- Laminated Object Manufacturing
FDM --- Fused Deposition Modeling
Others
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Rapid prototyping Processes- SLS
Selective Laser SinteringSelective Laser Sintering
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Application Range Visual Representation models Functional and tough prototypes cast metal parts
Advantages Flexibility of materials used No need to create a structure to support the part Parts do not require any post curing except when ceramic is used.
Disadvantages During solidification, additional powder may be hardened at the
border line. The roughness is most visible when parts contain sloping
(stepped) surfaces.
Rapid prototyping Processes- SLS
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Rapid prototyping Processes- SL
Stereolithography Stereolithography
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Application Range Parts used for functional tests Manufacturing of medical models Form –fit functions for assembly tests
Advantages Possibility of manufacturing parts which are impossible to be
produced conventionally in a single process Can be fully atomized and no supervision is required. High Resolution No geometric limitations
Disadvantages Necessity to have a support structure Require labor for post processing and cleaning
Rapid prototyping Processes- SL
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• Other Processes
• Ballistic Particle Manufacturing (BPM)
• This process uses a 3D solid model data to direct
streams of material at a target.
• 3D Printing
• It creates parts by layered printing process. The layers
are produced by adding a layer of powder to the top of a
piston and cylinder containing a powder bed and the part
is being fabricated.
• Model Maker
• It uses ink jet printer technology with 2 heads. One
deposits building material, and the other deposits
supporting wax.
Rapid prototyping Processes
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Rapid Prototyping Products
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