Abstract: To reduce the remanufacturing cost and improve product quality and processing stability of the remanufacturing of Waste Electromechanical Products (WEMP),an optimization method of remanufacturing tolerance for WEMP with process condition constraint was proposed.In this method,the characteristics of process condition constraint in tolerance design optimization for remanufacturing of WEMP were analyzed,and a four-level tolerance distribution system was constructed from tolerance design stage to manufacturing stage.Based on the design targets such as assembly accuracy and enterprise processing capability,a multi-objective optimization model of remanufacturing tolerance in design stage was established by taking production cost,quality loss,process capability in manufacture stage as the objectives.The modified method of the model was proposed based on the uncertainty precision to improve the rationality,and the Beetle Antennae Search Algorithm (BAS) was used to optimized the model.A used gearbox was taken as an example to illustrate the validity and practicality of the proposed method.The results showed that the proposed method was effective in optimization the remanufacturing tolerance of WEMP.

Key words: waste electromechanical products, remanufacturing tolerance, multi-objective optimization, beetle antennae search algorithm

摘要： 针对再制造机电产品公差设计不合理造成的再制造成本高、产品质量与工艺稳定性差的问题,提出一种考虑工艺条件约束的再制造公差优化设计方法。通过关联分析再制造产品毛坯件来源、零部件构成以及工艺能力等工艺条件约束对公差设计的影响特征,构建由再制造产品公差设计阶段至制造阶段的四级公差分配体系与优化方法框架。在满足产品精度要求、工艺稳定性等设计目标基础上,以制造阶段成本,质量损失和工序过程能力作为优化目标,建立再制造公差设计多目标优化模型,提出基于再制造加工面精度价值的模型修正方法,并利用天牛须搜索算法进行求解寻优。以再制造齿轮箱公差设计为例对所提方法的有效性与实用性进行了验证。

关键词: 再制造机电产品, 再制造公差, 多目标优化, 天牛须算法