Intelligent DMU creation: toleranced part modelling to enhance the digital environment

I. Friel; J. Butterfield; A. Marzano; T. Robinson

doi:10.1016/j.procir.2017.01.038

Intelligent DMU creation: toleranced part modelling to enhance the digital environment

I. Friel, J. Butterfield, A. Marzano, T. Robinson

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

This paper describes a method for the consideration of tolerance stack ups in the computer-aided design (CAD) environment as design concepts are developed into digital mock ups (DMUs). The method functionality includes the capability to create maximum (MMC) and least material condition (LMC) versions of the nominally sized components, allowing the three sets of entities to co-exist while respecting the positional constraints of the nominal master model. As the user switches between MMC and LMC combinations across a number of components, the overall dimensions of the assembly within the DMU change accordingly. The assembly constraints are regenerated through an equivalencing method based on surface properties, to respect the assembly intention. The new DMU, therefore, is an improved reflection of ‘as manufactured’ part forms making assembly analysis and the allocation of tolerances more accurate at the conceptual design stage, a novel function not currently available in commercial CAD software.

Original language	English
Pages (from-to)	92-97
Number of pages	6
Journal	Procedia CIRP
Volume	60
Early online date	9 May 2017
DOIs	https://doi.org/10.1016/j.procir.2017.01.038
Publication status	E-pub ahead of print - 9 May 2017
Externally published	Yes

Keywords

Design for manufacture
Design for assembly
Tolerance design

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10.1016/j.procir.2017.01.038Licence: CC BY-NC-ND

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title = "Intelligent DMU creation: toleranced part modelling to enhance the digital environment",

abstract = "This paper describes a method for the consideration of tolerance stack ups in the computer-aided design (CAD) environment as design concepts are developed into digital mock ups (DMUs). The method functionality includes the capability to create maximum (MMC) and least material condition (LMC) versions of the nominally sized components, allowing the three sets of entities to co-exist while respecting the positional constraints of the nominal master model. As the user switches between MMC and LMC combinations across a number of components, the overall dimensions of the assembly within the DMU change accordingly. The assembly constraints are regenerated through an equivalencing method based on surface properties, to respect the assembly intention. The new DMU, therefore, is an improved reflection of {\textquoteleft}as manufactured{\textquoteright} part forms making assembly analysis and the allocation of tolerances more accurate at the conceptual design stage, a novel function not currently available in commercial CAD software.",

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author = "I. Friel and J. Butterfield and A. Marzano and T. Robinson",

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T2 - toleranced part modelling to enhance the digital environment

AU - Friel, I.

AU - Butterfield, J.

AU - Marzano, A.

AU - Robinson, T.

PY - 2017/5/9

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AB - This paper describes a method for the consideration of tolerance stack ups in the computer-aided design (CAD) environment as design concepts are developed into digital mock ups (DMUs). The method functionality includes the capability to create maximum (MMC) and least material condition (LMC) versions of the nominally sized components, allowing the three sets of entities to co-exist while respecting the positional constraints of the nominal master model. As the user switches between MMC and LMC combinations across a number of components, the overall dimensions of the assembly within the DMU change accordingly. The assembly constraints are regenerated through an equivalencing method based on surface properties, to respect the assembly intention. The new DMU, therefore, is an improved reflection of ‘as manufactured’ part forms making assembly analysis and the allocation of tolerances more accurate at the conceptual design stage, a novel function not currently available in commercial CAD software.

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KW - Design for assembly

KW - Tolerance design

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DO - 10.1016/j.procir.2017.01.038

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JO - Procedia CIRP

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Intelligent DMU creation: toleranced part modelling to enhance the digital environment

Abstract

Keywords

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