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A Fixture Failure Control Chart For Variation Caused By Assembly Fixtures

Kristina Wärmefjord (Institutionen för produkt- och produktionsutveckling, Produktutveckling) ; Johan S Carlson (Institutionen för produkt- och produktionsutveckling, Produktutveckling)
roceedings of the ASME 2012 International Mechanical Engineering Congress & Exposition, IMECE2012, Houston, Texas, USA (2012)
[Konferensbidrag, refereegranskat]

In the auto body assembly process, fixtures are used to position parts during assembly and inspection. If there is variation in the positioning process, this will propagate to the final assembly. There are also other sources of variation in the final assembly, such as variation in parts due to previous manufacturing steps. To facilitate the separation of the different sources of variation, and thereby also improve fault diagnosis, a fixture failure subspace control chart is proposed. This control chart is based on a multivariate T2-chart, but only variations in the fixture failure subspace are considered. The method is applied to two industrial case studies with satisfying results.

Nyckelord: Quality Control, T2-chart, Multivariate, Fixtures, Assembly

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Denna post skapades 2012-10-25. Senast ändrad 2014-09-17.
CPL Pubid: 165110


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Institutioner (Chalmers)

Institutionen för produkt- och produktionsutveckling, Produktutveckling (2005-2017)


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Chalmers infrastruktur