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2010 | OriginalPaper | Buchkapitel

Design for Additive Manufacturing

verfasst von : Dr. Ian Gibson, Dr. David W. Rosen, Dr. Brent Stucker

Erschienen in: Additive Manufacturing Technologies

Verlag: Springer US

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Design for manufacture and assembly (DFM) has typically meant that designers should tailor their designs to eliminate manufacturing difficulties and minimize manufacturing, assembly, and logistics costs. However, the capabilities of additive manufacturing technologies provide an opportunity to rethink DFM to take advantage of the unique capabilities of these technologies. As we will cover in Chap. 14, several companies are now using AM technologies for production manufacturing. For example, Siemens, Phonak, Widex, and the other hearing aid manufacturers use selective laser sintering and stereolithography machines to produce hearing aid shells, Align Technology uses stereolithography to fabricate molds for producing clear dental braces (“aligners”), and Boeing and its suppliers use selective laser sintering to produce ducts and similar parts for F-18 fighter jets. For hearing aids and dental aligners, AM machines enable manufacturing of tens to hundreds of thousands of parts; where each part is uniquely customized based upon person-specific geometric data. In the case of aircraft components, AM technology enables low volume manufacturing, easy integration of design changes and, at least as importantly, piece part reductions to greatly simplify product assembly.

The unique capabilities of AM technologies enable new opportunities for customization, very significant improvements in product performance, multifunctionality, and lower overall manufacturing costs. These unique capabilities include:

shape complexity

, in that it is possible to build virtually any shape;

hierarchical complexity

, in that hierarchical multiscale structures can be designed and fabricated from the microstructure through geometric mesostructure (sizes in the millimeter range) to the part-scale macrostructure;

material complexity

, in that material can be processed one point, or one layer, at a time; and

functional complexity

, in that fully functional assemblies and mechanisms can be fabricated directly using AM processes. These capabilities will be expanded upon in

Sect. 11.4

.

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Metadaten
Titel
Design for Additive Manufacturing
verfasst von
Dr. Ian Gibson
Dr. David W. Rosen
Dr. Brent Stucker
Copyright-Jahr
2010
Verlag
Springer US
DOI
https://doi.org/10.1007/978-1-4419-1120-9_11

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