基于模糊综合层次评判法的精密齿轮制造工艺优化优先度分析

Optimization Priority Analysis of Precision Gear Manufacturing Process Based on AHP Fuzzy Comprehensive Evaluation Method

传统故障模式影响及危害度分析(FMECA)多应用于产品故障模式风险分析,而未涉及产品制造流程工艺参数优化优先度分析,且其风险优先数(RPN)分析无法对严酷度、发生概率和检测难易程度进行权重分配。因而参照传统FMECA中的RPN分析方法,以精密齿轮制造工艺流程为研究对象,并考虑齿轮制造当前工艺水平和工艺改进成本等因素,提出优化优先数分析法从而代替RPN分析法,并结合层次分析法-模糊综合评判的方法对齿轮制造流程的各个工艺参数进行优化优先等级评判并排序。最终根据评判结果,提出对重要工艺参数改进的方案,从而提升精密齿轮产品的可靠性和保障性水平。

The traditional failure mode effect and criticality analysis （FMECA） is often used in product risk analysis of failure mode, which does not involve the technological parameter optimization priority analysis of product manufacturing process, and the unreasonable weight distribution of the severity, proba- bility of occurrence and detective difficulty exists in risk priority number （RPN） analysis. A process opti- mization priority number （POPN） analysis method is proposed by referring to the RPN method of tradi- tional FMECA, taking the manufacturing process of a precision gear as the research object, in which the current technology level and technology improvement cost are considered. And then the optimization priority levels of all technology parameters are evaluated and sequenced based on the analytic hierarchy process fuzzy comprehensive evaluation method. According to the evaluated results, the improvement projects of important technology parameters are presented to increase the reliability and supportability of pre- cision gear products.