军机总装装配大纲质量风险等级评价模型研究

Research on Quality Risk Level Evaluation Model Based on Military Aircraft Assembly Order

针对军机总装阶段质量风险识别与产品制造过程脱节、风险管控重点不明确等问题,结合总装以装配大纲为基础制造单元的特点,通过对过程失效模式及影响分析(PFMEA)评价体系的局限性进行优化,提出一种装配大纲质量风险等级评价模型,定义了风险等级系数RLC的计算方法,并给出风险评价要素的评价方法。应用结果表明,通过该模型识别的装配大纲质量风险等级与实际情况相一致,基于模型风险等级评价结果的质量管控使平均单机不合格数下降73.12%。所提模型的装配大纲质量风险等级评价是正确并有效的,可为实际应用提供指导。

In order to solve the problems of disconnection between quality risk identification and product manufacturing process and unclear focus of risk control in the military aircraft final assembly stage,combined with the characteristics of assembly manufacturing unit based on assembly order,a quality risk level evaluation model based on assembly order is proposed by optimizing the limitations of PFMEA.The risk level coefficient(RLC)is defined,and the risk factors evaluation method is given.The application results show that the assembly order quality risk level identified by the model is consistent with the actual situation,and the average failure rate of single military aircraft decreases by 73.12%through quality control based on the model evaluation results.It is concluded that the assembly order quality risk level evaluation is correct and effective,which can provide guidance for practical application.