Already on ArticleSlash?

Forgot your password? Sign Up

Introduction to Rapid Prototyping and Types of Rapid Prototyping

 


Visitors: 260

Introduction to Rapid Prototyping
In research, development and study, prototypes play an important role. These developed prototypes help to do testing prior to production and help to pinpoint the possible problems that are occurring due to the design faults. Earlier generating a prototype model was extremely costly process and also time taking. But with the aid of Computer Numerically Controlled (CNC) Machining, the speed at which a prototype is developed has increased. With Rapid Prototyping, this time period has even decreased from few days to a few hours.

Rapid Prototyping is an additive manufacturing process that generates a model of an object directly from a CAD model by building it in layers. For this computerized equipment are used that builds a three-dimensional model of a casting from a CAD drawing.

There are different forms of Rapid Prototyping available depending upon the needs. One can differentiate between them by the methods these systems employ to make the layers. Following are few of the main types of Rapid Prototyping:

Stereolithography (SLA)
Stereolithography uses UV ray to solidify liquid acrylic polymer layer by layer on a moving platform and after many layers, the prototype in the preferred form is formed. This process is carried on in a VAT, a device that is filling up with photocurable liquid acrylate polymer. Stereolithography is one of the most used forms of rapid prototyping because of accuracy (Tolerances= 0.0125mm), less time taken (depends upon the size and complication of the part) and where parts details are fine and their geometry is to difficult to machined.

Fused Deposition Modeling (FDM)
Fused deposition modeling also referred as FDM, is a rapid prototype technology commonly used to convert CAD drawings into physical parts. FDM is a trademark of Stratasys and was developed by S. Scott Crump.

FDM works on an “additive" principle which extrudes material in layers. Plastic or wax is melted and liquefied in the extrusion head and extruded through a nozzle. The nozzle is made to move over a trail identified by the CAD design to produce part. This way single layer is extruded and then it is dropped to extrude the next layer on top of the first until the entire prototype is built, with one layer at a time.

Selective Laser Sintering (SLS)
Selective Laser Sintering uses the principle of sintering. Sintering is a heating process that prevents melting and a coherent mass is produce. In SLS, metallic or non-metallic powders are sintered using a CAD program guided laser that selectively fuses the powdered material.

There are few more types of Rapid Prototyping available, like; Laminated Object Manufacturing, 3D Printing, Solid Base Curing, Optical Fabrication and Photochemical Machining.

Rapid prototyping has provided designers with several benefits. Designers can look their parts and in case any error occurs they can easily fix it. Apart from industrial use they have formed part of manufacture. This development process provides blank patters for use in casting. RP has also proliferated biomedical science.

At EMS-USA we deliver 3d scanning, reverse engineering, and rapid prototyping service involving both on-site and off-site engagement models. Contact us for Stereolithography Services and other product and services we offer.

(555)

Article Source:


 
Rate this Article: 
 
Stereolithography Services Widely Used Rapid Prototyping Technology
Rated 4 / 5
based on 5 votes
ArticleSlash

Related Articles:

What You Need to Know About Rapid Prototyping Systems

by: Low Jeremy (June 11, 2007) 
(Computers and Technology)

The Benefits Of Rapid Prototyping

by: Low Jeremy (June 02, 2007) 
(Computers and Technology)

Benefits of Rapid Prototyping

by: Low Jeremy (May 14, 2007) 
(Computers and Technology)

Benefits of Rapid Prototyping and 3D Printers

by: Jon T Smith (June 26, 2008) 
(Computers and Technology/Hardware)

Rapid Prototyping Building Materials

by: Low Jeremy (May 30, 2007) 
(Computers and Technology)

Rapid Prototyping in the Medical Industry

by: Low Jeremy (May 31, 2007) 
(Computers and Technology)

Automotive Rapid Prototyping Fail First Paradox

by: Dan Perach (July 01, 2008) 
(Automotive)

Prototype Advantages and Rapid Prototyping Benefits

by: Ryan Rounds (June 16, 2008) 
(Computers and Technology/Software)

How to Find the Right Service Provider For Rapid Prototyping

by: Jon T Smith (August 17, 2008) 
(Computers and Technology/Personal Tech)

Stereolithography Services Widely Used Rapid Prototyping Technology

by: Jon T Smith (July 16, 2008) 
(Computers and Technology)