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Model-based definition (MBD), also known as digital-product definition (DPD), is the practice of using 3D models (such as solid models, 3D PMI and associated metadata) within 3D CAD software to define (provide specifications for) individual components and product assemblies. The types of information included are geometric dimensioning and tolerancing (GD&T), component level materials, assembly level bills of materials, engineering configurations, design intent, etc. By contrast, other methodologies have historically required accompanying use of 2D engineering drawings to provide such details.

Use of the 3D digital data set[edit]

Modern 3D CAD applications allow for the insertion of engineering information such as dimensions, GD&T, notes and other product details within the 3D digital data set for components and assemblies. MBD uses such capabilities to establish the 3D digital data set as the source of these specifications and design authority for the product. The 3D digital data set may contain enough information to manufacture and inspect product without the need for engineering drawings. Engineering drawings have traditionally contained such information.

In many instances, use of some information from 3D digital data set (e.g., the solid model) allows for rapid prototyping of product via various processes, such as 3D printing. A manufacturer may be able to feed 3D digital data directly to manufacturing devices such as CNC machines to manufacture final product.

Standardization[edit]

In 2003, ASME published the ASME Y14.41-2003 Digital Product Definition Data Practices, which was revised in 2012 as ASME Y14.41-2012. The standard provides for the use of many MBD aspects, such as GD&T display and other annotation behaviors within the solid model. ISO-16792:2006 standardizes MBD within the ISO standards, sharing many similarities with the ASME standard. Other standards, such as ISO 1101:2004 and of AS9100 also make use of MBD.

In 2013, the United States Department of Defense released MIL-STD-31000 Revision A to codify the use of MBD as a requirement for technical data packages (TDP).

See also[edit]

References[edit]

External links[edit]


Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Model-based_definition — Please support Wikipedia.
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16 news items

Manufacturers' Monthly

Manufacturers' Monthly
Mon, 17 Nov 2014 16:29:13 -0800

There are now some 26 products in the SolidWorks portfolio, and some of the big changes in the 2015 edition include collaborative, cloud-based sharing (on Dassault's 3D Experience Platform), the drawing-less Model-Based Definition offering, and great ...
 
Desktop Engineering
Mon, 03 Nov 2014 12:01:43 -0800

It can find differences in product geometry, model based definition or product manufacturing information. The 2015 versions also include enhanced CAD file interoperability. There are several new functions that improves user control over how they can ...
 
Modern Machine Shop
Sun, 26 Oct 2014 22:21:35 -0700

... metrology touchscreen applications including Windows 8 tablets on the shop floor. Software security features provide permissions-based access to Verisurf files, modules and features, and 3D PDF reports now support 3D model-based definition (MBD ...
 
Broadway World
Thu, 23 Oct 2014 05:00:00 -0700

ECO Manager can be used to very easily compare two CAD models, regardless of file type, to uncover differences in product geometry, Model Based Definition (MBD) or Product Manufacturing Information (PMI) contained in the 3D model. Found revisions can ...

Vraagenaanbod.nl

Vraagenaanbod.nl
Fri, 14 Nov 2014 03:51:39 -0800

De 2015-versie van Solidworks is sneller geworden door het terugbrengen van bestandgroottes, maar ook krachtiger en veelzijdiger door toevoeging van nieuwe functies. Zoals Model Based Definition (MBD) waarmee 3D Product Manufacturing Information ...
 
PresseBox (Pressemitteilung)
Mon, 17 Nov 2014 00:03:45 -0800

(PresseBox) (Leonberg, 17.11.2014 ) Die K2D-KeyToData GmbH gibt die Verfügbarkeit von InspectionXpert OnDemand für CAD von InspectionXpert Corp. bekannt, einer neuen Softwarelösung zur Qualitätsplanung und -dokumentation, die sowohl 3D ...

Scope Online

Scope Online
Thu, 13 Nov 2014 03:42:48 -0800

Dazu gehört beispielsweise die „Model Based Definition“ (MBD), mit der sich 3D-Produktfertigungsinformationen (PMI) und 3D-Modelldaten in Standarddateiformaten wiedergeben lassen. Insgesamt bietet die 2015-Version von SOLIDWORKS über 80 neue ...
 
TCT Magazine + Personalize - News from the 3D Printing and Additive Manufacturing Industry (blog)
Wed, 15 Oct 2014 03:52:30 -0700

“With the emphasis on the direct-from-3D-model fabrication processes, it's important that we shift our focus to model-based definition so that we can shorten our overall design cycle and simplify the way we do things,” said Ryan Trulli, Mechanical ...
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