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Analysis of stamping production data with view towards quality management

conference contribution
posted on 2003-01-01, 00:00 authored by Bernard RolfeBernard Rolfe, Yakov Frayman, G Webb, Peter HodgsonPeter Hodgson
A quality analysis trial was undertaken at Ford Geelong Stamping Plant on a press line that was fitted with standard press sensors to measure press and binder force over the stamping cycle for each panel. The quality of randomly sampled panels was measured by obtaining the panel thicknesses at five points, for 135 panels in total. These points were chosen such that they exhibited different forming modes. This paper analyses the input force data and the output quality data from the trial to determine any potential relationships. The analysis of the production data was performed using statistical correlation techniques to determine initial potential relationships between input and output variables. An Active Shape Model was used to extract features when identifying the major sources of variation within the input data. However, the initial analysis of the data elicited no direct relationship between the input variables measured and the panel thicknesses. This result is significant as the data collected is from a standard sensor configuration found in many press lines through-out the world. The reason for the lack of a direct relationship is believed to come from the lack of sensitivity in the force measurements which are not able to identify small changes in the process, whereas gross geometric variations have in previous studies shown an obvious relationship with changes in the force press profile. This means that existing force sensors require augmentation by additional sensors if a detailed automatic quality control system for the press lines based on input sensors alone.

History

Title of proceedings

ICME 2003 Conference proceedings, 13-15 Oct., 2003, Carlton Crest Hotel, Melbourne Australia.

Event

International Conference on Manufacturing Engineering (9th : 2003 : Melbourne, Australia)

Pagination

1 - 15

Publisher

the Conference

Location

Melbourne, Victoria, Australia

Place of publication

Melbourne, Vic

Start date

2003-10-13

End date

2003-10-15

ISBN-13

9781877040177

ISBN-10

1877040177

Language

eng

Publication classification

E1 Full written paper - refereed

Copyright notice

2005, Monash University

Editor/Contributor(s)

R Brown

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