Accrediting a Machine for a Lifetime of Quality

Article

Middleton, David H.   (1992, ASQC)   Eastman Kodak Company, Professional Film Manufacturing, Rochester, NY 14652-3209

Annual Quality Congress, Nashville TN    Vol. 46    No. 0
QICID: 9830    May 1992    pp. 151-157
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Article Abstract

Designed experiments are effective techniques for reliably predicting quality problems of machines by systematically creating and evaluating all significant run conditions that are likely to be experienced by a machine during its lifetime. This paper describes two designed experiments used to accredit Eastman Kodak's new spooling machine, the 409 Spooler.The accreditation team's first used a screening experiment and listed all machine parameters, material parameters, and operational parameters that could have an effect on product quality. The second experiment was an optimization experiment to determine the optimal operational setpoint and model the quality responses as functions of the three significant machine parameters: web tension, web acceleration, and wind pressure exerted on the roll during winding.The results of the screening experiment identified the three significant machine parameters. The optimization experiment then developed models to establish a setpoint, which became the centerpoint for the accreditation experiment. The accreditation experiment evaluated attributes (such as defects) and variable data. The 409 Spooler passed the accreditation experiment and has had no significant quality problems.

Keywords

Accreditation,Defects,Design of experiments (DOE),Machines,Statistics,Verification


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