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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