- Fused deposition modeling
Fused deposition modeling, which is often referred to by its initials FDM, is a type of
rapid prototypingor rapid manufacturing(RP) technology commonly used within engineering design. The technology was developed by S. Scott Crumpin the late 1980s and was commercialized in 1990. The FDM technology is marketed commercially by StratasysInc, who also holds a trademark on the term.
Like most other RP processes (such as
3D Printingand stereolithography) FDM works on an "additive" principle by laying down material in layers. A plastic filament or metal wire is unwound from a coil and supplies material to an extrusionnozzle which can turn on and off the flow. The nozzle is heated to melt the material and can be moved in both horizontal and vertical directions by a numerically controlled mechanism, directly controlled by a Computer Aided Design software package. In a similar manner to stereolithography, the model is built up from layers as the material hardens immediately after extrusion from the nozzle.
Several materials are available with different trade-offs between strength and temperature. As well as
Acrylonitrile butadiene styrene(ABS) polymer, the FDM technology can also be used with polycarbonates, polycaprolactone, polyphenylsulphones and waxes. A "water-soluble" material can be used for making temporary supports while manufacturing is in progress. Marketed under the name WaterWorks by Stratasys this soluble support material is actually dissolved in a heated sodium hydroxidesolution with the assistance of ultrasonicagitation.
Most available commercial printers using FDM technology utilize positioning systems employing either
stepperor servo motorsto move the extrusion head.
2003, FDM was the best-selling rapid prototypingtechnology. [cite web| url=http://stratasys.com/uploadedFiles/North_America/Media/ART%20Forbes.pdf| title= Almost Out of the Woods| work=Forbes.com| accessdate=2007-02-17]
FDM systems include the FDM Titan, FDM Vantage, FDM Maxum and Prodigy Plus. FDM uses production-grade
thermoplastics, such as ABS, ABSi, polyphenylsulphone(PPSF) and polycarbonate(PC), including PC-ABS. Because of the material properties, FDM parts typically withstand functional testing and have high heat resistance. Some companies have sterilized PPSF for medical applications, however material manufacturer Stratasysdoes not advertise that PPSF is sterilizable.
The FDM process does not yield very high detail, so FDM prototypes are mostly used for functional testing or as a final product, not as display models.
Selective laser sintering
* [http://www.rapidprototypinghomepage.com The Rapid Prototyping Home Page]
* [http://home.att.net/~castleisland/home.htm Castle Island] Castle Island's worldwide guide to rapid prototyping
* [http://www.stratasys.com Stratasys]
* [http://www.reprap.org The RepRap Project: Creating wealth without money...]
* [http://www.3dreplicators.com The Clanking Replicator Project: Bootstrap your own self-replicating, rapid prototyping machine]
Wikimedia Foundation. 2010.
См. также в других словарях:
Fused Deposition Modeling — Kunststoffdino mit schichtweisem Auftrag und Stützstruktur Fused Deposition Modeling (deutsch: Schmelzschichtung) bezeichnet ein Fertigungsverfahren aus dem Bereich des Rapid Prototyping, mit dem ein Werkstück schichtweise aus einem… … Deutsch Wikipedia
Deposition — or Depose may refer to: Deposition (law), taking testimony outside of court Deposition (chemistry), molecules settling out of a solution Thin film deposition, any technique for depositing a thin film of material onto a substrate or onto… … Wikipedia
Fused quartz — A sphere manufactured by NASA out of fused quartz for use in a gyroscope in the Gravity Probe B experiment. It is one of the most accurate spheres ever created by humans, differing in shape from a perfect sphere by no more than 40 atoms of… … Wikipedia
Chemical vapor deposition — DC plasma (violet) enhances the growth of carbon nanotubes in this laboratory scale PECVD apparatus. Chemical vapor deposition (CVD) is a chemical process used to produce high purity, high performance solid materials. The process is often used in … Wikipedia
Impression 3D — Histoire de l’imprimerie Technologies Sceau cylindre 4100 500 av. J.‑C … Wikipédia en Français
Solid freeform fabrication — (SFF) is a collection of techniques for manufacturing solid objects by the sequential delivery of energy and/or material to specified points in space to produce that solid. SFF is sometimes referred to as rapid prototyping, rapid manufacturing,… … Wikipedia
Rapid prototyping — For rapid software prototyping, see rapid application development. A rapid prototyping machine using selective laser sintering. Rapid prototyping is the automatic construction of physical objects using additive manufacturing technology. The first … Wikipedia
3D Printing — Stratasys FDM MedModeler Am Anfang Stratasys FDM MedModeler Der Kunststoff wird aufgetragen … Deutsch Wikipedia
3d druck — Stratasys FDM MedModeler Am Anfang Stratasys FDM MedModeler Der Kunststoff wird aufgetragen … Deutsch Wikipedia
Rapid-Prototyping — Stratasys FDM MedModeler Am Anfang Stratasys FDM MedModeler Der Kunststoff wird aufgetragen … Deutsch Wikipedia