Controlling Process Variation Is Key to Manufacturing Success


Anderson, Larry H.   (1990, ASQC)   Allied-Signal Inc., Fostoria, OH

Quality Progress    Vol. 23    No. 8
QICID: 12372    August 1990    pp. 91-93
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Article Abstract

A change of focus from problem detection to problem prevention will help manufacturers increase quality without unnecessarily interrupting material flow. To do so, there are three steps to controlling process variation. First, establish the precise relationships between product specifications and process parameters. Second, identify the optimum range under which each parameter should operate. It is vital to have direct control over the parameters that affect dimensional characteristics. The Cpk index can assist in tightening the parameters. Third, constantly monitor the process. Automated monitoring in a computer-integrated manufacturing system is appropriate. This three-step procedure can unburden a manufacturing system from some of the labor, inventory, and other nonmanufacturing costs that surround it.


Computer-Aided Manufacturing (CAM),Cost management,Variation,Prevention,Process control,Manufacturing

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