在分析机械加工系统的加工误差和测量误差对零件加工尺寸分布影响的基础上 ,建立了误判率与加工误差、测量误差之间的数学模型 ,揭示了误判率与加工能力和测量能力之间的关系 ,给出了模型的计算实例 .此研究对降低废品率、实现零废品制造提供了可靠的理论基础 . Based on the analysis of the influence of machining error and measurement error on the machining size distribution of machining parts, a mathematical model of misjudgment rate, machining error and measurement error was established, and the misjudgment rate, processing ability and measurement ability were revealed This paper gives a calculation example of the model, which provides a reliable theoretical basis for reducing the reject rate and realizing zero waste product manufacturing.