对产品质量的控制,目前常采用的方法是全数检验和抽样检验法,这只能是“事后剔除”不合质量要求的产品,毕竟是资源的一种浪费。本文利用3σ准则建立了-R控制图,介绍了-R控制图在工序质量控制中的应用,旨在生产过程中对零部件的质量进行监测和评估,以便及时发现并排除影响产品质量的因素,减少不合格产品的数目。%The usual methods in product quality control,total inspection andsampling inspection,are only postmortem measurements.This paper designed -R control chart using 3σ principle and discussed its applications in process quality control.It can effectively monitor and evaluate the quality of parts and promptly find and remove the factors of damaging product quality.
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