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Research Papers

Testing the Digital Thread in Support of Model-Based Manufacturing and Inspection

[+] Author and Article Information
Thomas Hedberg, Jr.

National Institute of Standards and Technology,
Gaithersburg, MD 20899
e-mail: tdh1@nist.gov

Joshua Lubell

National Institute of Standards and Technology,
Gaithersburg, MD 20899

Lyle Fischer

Capvidia NA,
New Ulm, MN 56073

Larry Maggiano

Mitutoyo America Corp.,
Aurora, IL 60502

Allison Barnard Feeney

National Institute of Standards and Technology, Gaithersburg, MD 20899

1Corresponding author.

Contributed by the Computers and Information Division of ASME for publication in the JOURNAL OF COMPUTING AND INFORMATION SCIENCE IN ENGINEERING. Manuscript received December 15, 2015; final manuscript received February 4, 2016; published online March 8, 2016. Editor: Bahram Ravani. This material is declared a work of the U.S. Government and is not subject to copyright protection in the United States. Approved for public release; distribution is unlimited.

J. Comput. Inf. Sci. Eng 16(2), 021001 (Mar 08, 2016) (10 pages) Paper No: JCISE-15-1415; doi: 10.1115/1.4032697 History: Received December 15, 2015; Revised February 04, 2016

A number of manufacturing companies have reported anecdotal evidence describing the benefits of model-based enterprise (MBE). Based on this evidence, major players in industry have embraced a vision to deploy MBE. In our view, the best chance of realizing this vision is the creation of a single “digital thread.” Under MBE, there exists a model-based definition (MBD), created by the Engineering function, which downstream functions reuse to complete model-based manufacturing and model-based inspection activities. The ensemble of data that enables the combination of MBD, manufacturing, and inspection defines this digital thread. Such a digital thread would enable real-time design and analysis, collaborative process-flow development, automated artifact creation, and full-process traceability in a seamless real-time collaborative development among project participants. This paper documents the strengths and weaknesses in the current, industry strategies for implementing MBE. It also identifies gaps in the transition and/or exchange of data between various manufacturing processes. Finally, this paper presents measured results from a study of model-based processes compared to drawing-based processes and provides evidence to support the anecdotal evidence and vision made by industry.

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Figures

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Fig. 1

Process for the pilot project

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Fig. 5

Three-dimensional model of test case 3

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Fig. 4

Three-dimensional model of test case 2

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Fig. 3

Three-dimensional model of test case 1

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Fig. 2

Examples of representation and presentation PMI in a drawing and model

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Fig. 7

Comparison of a delivered test case 1 part showing the addition of an unintended through-hole in the drawing-based part

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Fig. 8

Comparison of drawing-based and model-based processes

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Fig. 6

Comparison of test case 2 models used in the model-based and drawing-based processes

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Fig. 9

Excerpt of drawing for test case 1 highlighting the annotation group missing the hole depth callout

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