3d printing

Topics: Rapid prototyping, Solid freeform fabrication, 3D printing Pages: 10 (3423 words) Published: April 9, 2014

3D PRINTING TECHNOLOGY

Contents:
1. Introduction
2. History Of 3D Printing
3. Current 3D Printing Technologies
4. The Basic Process Of 3D Printing
5. 3D Printing VS Conventional Technologies
6. Applications
7. Conclusion

Introduction
3Dimensions printing is a method of converting a virtual 3D model into a physical object. 3D printing is a category of rapid prototyping technology. 3D printers typically work by printing successive layers on top of the previous to build up a three dimensional object. The past decade has witnessed the emergence of new manufacturing technologies that build parts on a layer-by-layer basis. Using these technologies, manufacturing time for parts of virtually any complexity is reduced considerably. In other words, it is rapid. Rapid Prototyping Technologies and Rapid Manufacturing offer great potential for producing models and unique parts for manufacturing industry. A few years ago, to get some prototyping work done for a product or design you are working on, you are required to spend a lot of man-hours just to come up with the model. Those hours will be spent creating miniature parts of your design using wood and then gluing all those parts together painstakingly. Prototyping is, at the very least, time-consuming and extremely tedious. These days, however, you can take the tediousness and the time investment out of your prototyping tasks through rapid prototyping or 3d printing. 3D printing is a revolutionary method for creating 3D models with the use of inkjet technology. Many engineers have even dubbed 3D printing as the process of creating something out of nothing. Thus, the reliability of products can be increased; investment of time and money is less risky. Not everything that is thinkable today is already workable or available at a reasonable price, but this technology is fast evolving and the better the challenges, the better for this developing process. The term Rapid prototyping (RP) refers to a class of technologies that can automatically construct physical models from Computer-Aided Design (CAD) data. It is a free form fabrication technique by which a total object of prescribed shape, dimension and finish can be directly generated from the CAD based geometrical model stored in a computer, with little human intervention. Rapid prototyping is an "additive" process, combining layers of paper, wax, or plastic to create a solid object. In contrast, most machining processes (milling, drilling, grinding, etc.) are "subtractive" processes that remove material from a solid block. RP’s additive nature allows it to create objects with complicated internal features that cannot be manufactured by other means. In addition to prototypes, RP techniques can also be used to make tooling (referred to as rapid tooling) and even production-quality parts (rapid manufacturing). For small production runs and complicated objects, rapid prototyping is often the best manufacturing process available. Of course, "rapid" is a relative term. Most prototypes require from three to seventy-two hours to build, depending on the size and complexity of the object. This may seem slow, but it is much faster than the weeks or months required to make a prototype by traditional means such as machining. These dramatic time savings allow manufacturers to bring products to market faster and more cheaply. 3D PRINTING: MAKING THE DIGITAL REAL

Imagine a future in which a device connected to a computer can print a solid object. A future in which we can have tangible goods as well as intangible services delivered to our desktops or highstreet shops over the Internet. And a future in which the everyday "atomization" of virtual objects into hard reality has turned the mass pre-production and stock-holding of a wide range of goods and spare parts into no more than an historical legacy. Such a future may sound like it is being plucked from the worlds of Star Trek. However, whilst...
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