Limitations of notation system in centred part alignment accuracy imposed by ISO standard and proposal for an improved methodology

• Autorzy: Yan Y. , Bohn M.
• Języki publikacji: EN

Abstrakty

EN

According to the ISO Geometrical Product Specifications (GPS), centred part alignment with one centred point can be described clearly using technical drawings. There are two main limitations of this standard; Firstly: the uncertainty over use of notations in technical drawings when more than one centred point is applied, and secondly, the use of fixed datum targets to centred points which causes an unstable alignment process. This article suggests a new approach for a functional, explicitly defined notation system of datums and datum systems based on the research of orientation constraints between datums. This new approach simplifies the technical drawing, thereby eliminating notation uncertainties. An improved methodology for a stable alignment process was developed based on physical analysis of the centred part alignment which implements movable datum targets.

Słowa kluczowe

EN

geometrical product specifications; part alignment; datum

• Wydawca: Wydawnictwo Wrocławskiej Rady FSNT NOT
• Czasopismo: Journal of Machine Engineering
• Rocznik: 2017
• Tom: Vol. 17, No. 2
• Strony: 90--101
• Opis fizyczny: Bibliogr. 19 poz., rys.

Twórcy

autor

Yan Y.

• Daimler AG, Research & Development Body in White, Dimensioning & Tolerancing, Germany

autor

Bohn M.

• Daimler AG, Research & Development Body in White, Dimensioning & Tolerancing, Germany

Bibliografia

• [1] ISO 5459, 2011, Geometrical Product Specification (GPS)-Geometrical tolerancing-Datums and datum systems.
• [2] HUMINENNY Z., 2009, State of art in standardization in GPS area, CIRP Journal of Manufacturing Science and Technology, 2/1, 1-7.
• [3] ISO 14660-1, 1999, Geometrical Product Specification (GPS)-Geometrical features-Part 1: General terms and definitions.
• [4] ADRAGAN P., SAMPER S., PILLET M., FAVRELIERE H., 2006, Analysis of shape deviations of measured geometries with a modal basis, Journal of Machine Engineering, 6/1, 134-143.
• [5] ANSELMETTI B., LOUATI H., 2005, Generation of manufacturing tolerancing with ISO standards, International Journal of Machine Tools and Manufacture, 45/10, 1124-1131.
• [6] BHAT V., C DE METER E., 2000, An analysis of the effect of datum-establishment methods on the geometric errors of machined features, International Journals of Machine Tools & Manufacture, 40/13, 1951-1975.
• [7] GASKA A., SLADEK H., 2016, Modelling of the coordinate measurement system accuracy, Journal of Machine Engineering, 16/3, 34-46.
• [8] GREEN P., 2005, The Geometrical Tolerancing Desk Reference. Creating and Interpreting ISO Standard Technical Drawings, 1st Edition, ISBN 978-0080460857, Elsevier.
• [9] HENZOLD G., 2006, Geometrical Dimensioning and Tolerancing for Design Manufacturing and Inspection, Butterworth-Heinemann.
• [10] JORDAN W., 2008, Form- und Lagetoleranzen: Handbuch für Studium und Praxis, Hanser Verlag, ISBN 978-3446430808, Germany.
• [11] JORDAN W., SCHÜTTE W., 2014, Form- und Lagetoleranzen: Handbuch für Studium und Praxis, Hanser Verlag, ISBN 978-3446439702, Germany.
• [12] MEJBRI H., ANSELMETTI B., MAWUSSI K., 2005, Functional tolerancing of complex mechanisms: Identification and specification of key parts, Computer & Industrial Engineering, 49/2, 241-265.
• [13] SHAKARJI C., SRINIVASAN V., 2016, Theory and algorithm for planar datum establishment using constrained total least-squares, 14th CIRP Conference on Computer Aided Tolerancing (CAT), 232-237.
• [14] ZHANG X., ROY U., 1993, Criteria for establishing datums in manufactured parts, Journal of Manufacturing Systems, 12/1, 36-50.
• [15] BOHN M., HETSCH K., 2016, Funktionsorientiertes Toleranzdesign, Hanser Verlag, ISBN 978-3446450097, Germany.
• [16] ISO 17450-1, 2011, Geometrical Product Specification (GPS)-General concepts-Part 1: Model for geometrical specification and verification.
• [17] ASME Y14.5, 2009, Dimensioning and Tolerancing- Engineering Drawing and Related Documentation Practices.
• [18] BOHN M., HETSCH K., 2013, Toleranzmanagement im Automobilbau, Hanser Verlag, ISBN 978-34446434967, Germany.
• [19] ISO 1101, 2013, Geometrical Product Specification (GPS)-Geometrical tolerancing-Tolerances of form, orientation, location and run-out.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).