基于工艺因素统计量化的多工序制造质量建模

For the incomplete description and inaccurate analysis results of existing multi-stage manufacturing system (MSMS) model for complex weapon equipment, a quality transfer comprehensive model (QTCM) is proposed based on the characteristics of MSMS, which gives a strict mathematical expression of multi-stage quality transfer process. In the framework of QTCM, the operator capability and the manufacturing equipment state are quantified for the influencing factors of product quality with the help of psychological and statistical knowledge, which were often ignored in the past. For the transfer process of the quality, the mapping relationship between influencing factors and quality output is constructed by using historical data of the manufacturing process. For the improvement of product quality, the main error sources affecting the quality are determined by analyzing the contribution of each factor, which guides the improvement of product manufacturing quality. The analysis of rotor system of a missile engine shows that the final quality distribution can be easily calculated according to the quality of raw materials or process quality, and the analyzed results are in agreement with the measured results.