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以精密复杂刀具真空热处理工艺为研究对象,针对刀具几何参数的多变性、真空热处理工艺参数的复杂性和工艺设计特点,提出了全新的交叉混合推理方法。详细讨论了系统推理机结构构建、交叉混合推理机制、推理流程及属性判断,提高了专家系统推理的准确性和灵活性,有效避免了实例推理与规则知识的不足。同时采用交叉混合推理对M2齿轮刀具的真空热处理工艺方案进行研究。
Taking the precision heat treatment process of the complex tool as the research object, a new cross-mixing inference method is proposed in view of the variability of the cutter geometric parameters, the complexity of the vacuum heat treatment process parameters and the process design features. The structure of system inference engine, cross-mixing inference mechanism, reasoning process and attribute judgment are discussed in detail. The accuracy and flexibility of expert system inference are improved, which effectively avoids the deficiency of case-based reasoning and rule-based knowledge. At the same time, the cross-mixing reasoning was used to study the vacuum heat treatment process of M2 gear cutter.