Model-based definition (MBD), sometimes digital product definition, 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
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.
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).
- ^ "MIL-STD-31000 Rev A", p36, 26 February 2013. Retrieved on 23 April 2015.
- ^ Thilmany, Jean, "Digital Tolerance", "MBD is a method of annotating computer-aided design models with geometric and tolerancing information that allows engineers to draw directly onto a 3-D model.", ASME.org, March 2011. Retrieved on 23 April 2015.
SOLIDWORKS 2015 - Model Based Definition
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Model Based Definition - MBE
Paul Muang, MBE Program Leader, Army Research Laboratory discusses Model Based Definition in MBE and the reuse of model based definition data to ...
CATIA 3D Master for Model Based Definition
More information at: http://www.3ds.com/products-services/catia/capabilities/mechanical-engineering/3d-master/ Do you use 3D, but your programs still suffer ...
CAD Model Based Definition with TransMagic
CAD Model Based Definition (MBD) allows acquisition of vital design information from the model itself. TransMagic can read and write Product and ...
SOLIDWORKS Model Based Definition First Look
SOLIDWORKS MBD - Model Based Definition to zintegrowane rozwiązanie produkcyjne, które nie wymaga używania rysunków. Wspomaga ono definiowanie ...
Customer Successes with Model Based Definition
Oboe Wu, Product Manager of SOLIDWORKS MBD, discusses companies using MBD, and their results.
Creo Parametric Training Class: Using Annotations to Support Model Based Definition
In this course, gain an understanding of the general concepts behind Model Based Definition (MBD), and why your company is moving toward its ...
What is SOLIDWORKS Model Based Definition - Part2
Part 2 of interview with SOLIDWORKS MBD Product Manager Oboe Wu discusses how to eliminate conversion of 3D data to 2D documents and fully leverage ...
CATIA | Mechanical Engineering | Model-Based Definition Series - Episode2 - DetailedDesign
For this second episode, we will have a look at the tolerancing process of a single part. It is always important to create tolerancing and annotations compliant ...
Enable Drawingless Operations with Model Based Definition
During this webinar, we focus on the process of MBD and the benefits to engineering and manufacturing. Companies that embrace MBD report savings in ...
Thu, 02 Jul 2015 01:37:30 -0700
So ging es mir mit der neuen Pressemitteilung von SolidWorks zum Modul Model Based Definition (MBD). Immerhin ein guter Grund, sich noch einmal tiefer damit zu befassen – immerhin hat MBD das Potential, den Produktdefinitionsprozess an ...
Mon, 29 Jun 2015 16:21:40 -0700
The software is what permits the model-based definition and reverse-engineering practices that define today's world of industrial metrology. The manufacturing sectors addressed by these technologies include aerospace, defense, automotive, medical, ...
Tue, 23 Jun 2015 05:33:45 -0700
Model Based Definition en smart customization moeten de engineering voor een klantspecifieke conveyor terugdringen van veertig uur naar twee minuten. • 'Voor moderne cnc-machines is geen tekening meer nodig.' • 'We gaan 'bouwdoosjes' leveren.
Fri, 26 Jun 2015 11:11:15 -0700
“In the aerospace and defense industry, the technology called Model Based Enterprise/Model Based Definition, or MBE/MBD, was identified,” says Buthe. “MBE/MBD is also known as the digital thread of product models based on a 3D product definition.
MCADCafe (press release)
Mon, 29 Jun 2015 13:26:15 -0700
Join users and technology experts to find out the very latest in the MBE and MBD (Model-Based Definition). Presentations and audio from past CIC events are available at ( www.3DCIC.com). About Longview Advisors: Longview Advisors Inc. provides ...
Mon, 16 Feb 2015 11:53:15 -0800
Concept of Model Based Definition simply put is the definition or information of a product in an annotated 3D CAD model. The model annotation also referred to as Product Manufacturing Information (PMI), has to be organized in a consistent manner so ...
Business Wire (press release)
Wed, 11 Feb 2015 08:52:30 -0800
“Model-based definition methodologies have been shown to reduce manufacturing errors and avoid the expense and time associated with developing 2D drawings, which can run up to 50 percent of total development costs,” said Gian Paolo Bassi, CEO, ...
Design World Network
Design World Network
Mon, 08 Jun 2015 08:22:30 -0700
The software also helps manufacturing get dimensions, tolerances, material type, finish and other annotation information. That eliminates the need to send separate drawings to the plant floor. The PDFs even support model-based definition (MBD ...
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