基于TFAHP的零件加工特征工艺链模糊综合决策

Fuzzy synthesis decision of part processing feature process chain based on TFAHP

零件加工特征工艺链的决策问题中因存在诸多模糊性因素,主要依赖工艺人员的经验,降低了工艺设计的质量和效率,无法满足经济性需求。针对上述问题,在考虑了零件加工的经济性,分析了影响零件加工特征工艺链决策主要因素的基础上,提出了一种基于三角模糊层次分析法(TFAHP)的零件加工特征工艺链模糊综合决策方法。首先,采用TFAHP构建了判断矩阵,并基于可能度进行了指标权重求解;然后,构建了零件加工特征工艺链的影响因素与其备选集合之间的隶属度函数,完成了零件加工特征工艺链的模糊综合决策工作;最后,以某轴类零件为例,决策出了满足加工要求的八种孔加工特征工艺链,并结合企业实际应用,对该方法在零件加工特征工艺链决策中的经济性及有效性进行了验证。研究结果表明:方案8的P值为1.0,为最优加工特征工艺链,该方法的定量化评价E值为0.137,对比传统方法更加具有经济性,满足使用需求。

The decision-making problem in the process chain of part machining features mainly relies on the experience of process personnel due to the existence of many fuzzy factors,which reduces the quality and efficiency of process design and can not meet economic requirements.In response to the above issues,considering the economy of part processing,the main factors affecting the decision-making of part processing feature process chain were analyzed,and a fuzzy comprehensive decision-making method for part processing feature process chain based on triangular fuzzy analytic hierarchy process(TFAHP) was proposed.Firstly,TFAHP was used to construct a judgment matrix,and indicator weights were calculated based on likelihood.Then,the membership function between the influencing factors of the part machining feature process chain and its candidate set was constructed,the fuzzy comprehensive decision-making of the part machining feature process chain was completed.Finally,taking a certain axis type part as an example,eight-hole machining feature process chains that met the machining requirements were determined.Combining with the actual application of the enterprise,the economic and effectiveness of this method in the decision-making of part machining feature process chains were verified.The research results indicate that the P-value of scheme 8 is 1.0,which is the optimal machining feature process chain.The quantitative evaluation E-value of this method is 0.137,which is more economical compared to traditional methods and meets the usage needs.