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Identifying Useful Differences in a Multiple-Head Machine

Summary: Many industrial processes include a circular multiple-head machine which runs continuously and which permits a variety of adjustments to the parts of the machine. This paper illustrates several methods for investigating various types of differences by examining filling weight data from a machine which has 24 heads. Differences in both the average and variation of filling weights are identified.

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  • Topics: Data Quality, Statistical Process Control (SPC)
  • Keywords: Analysis Of Means (ANOM),Data analysis,X-bar and R control charts,Process control
  • Author: Ott, Ellis R.; Snee, Ronald D.
  • Journal: Journal of Quality Technology