3D-printer -                           GBN Systems

3D-printer

3D Wirbel3D-printers are a special subset of the machine class of digital fabricators. Within the class of digital fabricators 3D-printers are the most important class of the class of additive, i.e.accumulating, building fabricators. 3D-printing refers primarily to the manufacturing process of the primary shaping.

3D-printers were used mainly in the production of prototypes and models, then the production of work pieces, of which only small quantities are needed. For example the aircraft manufacturer Boeing used in the fighter jet F-18 Hornet 86 laser sintering parts.

Some basic advantages over competing manufacturing processes led an lead to an increasing use of technology in mass production of parts. Compared with the injection molding process, for example, 3D-printing has the advantage that the time-consuming production of molds an the mold change is not necessary. Compared to all material minimising processes such as cutting, turning, drilling, 3D-printing has the advantage that the material loss is eliminated. Most of the process is also energetically favourable, because the material is built up only once in the required size and mass (see also: rapid prototyping).

The main techniques of 3D-printing are selective laser melting and electron beam melting of metals and selective laser sintering of polymers, ceramics and metals, stereolithography and the "Digital Light Processing" for liquid resins, the "Polyjet Modeling" and the "Fused Deposition Modeling" for plastics and partially synthetic resins.

The achievable resolution of a resin printer was at the end of 2012, for example 0,043 mm in the x- and y-direction and 0,016 mm in the z-axis.

Graphics: Autor: U.S. Navy photo by Chief Warrant Officer 4 Seth Rossman

This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

Text (free translation) Source:http://de.wikipedia.org/wiki/3D_Drucker