【摘要】 为减少选配后的机械产品由于功能波动而造成的损失,将田口博士提出的质量损失函数运用到机械产品选配活动中。分析Artiles多变量损失函数的局限性,提出基于信噪比(sNR)的多元质量特性损失函数来定量表达零部件多个质量特性的损失权重及损失成本,以及把配合偏差的质量损失函数作为衡量配合精度的有效指标。在综合考虑机械产品多处配合精度与各零部件多元质量特性下,利用整数规划思想,建立面向选配的产品质量损失成本模型(P-QLC),在保证产品质量损失成本最小化的情况下,达到最优选配组合的目的。实例验证该方法的有效性。更多还原

【Abstract】 Dr. TAGUCHI’s quality loss function is used to handle the selective assembly activity about mechanical product, in order to reduce the loss of mechanical product that can be affected by its function fluctuation after selective assembly. Through analyzing the disadvantages and limitation of the quality loss function proposed by Artiles, multi-quality- characteristic loss function based on signal noise ratio(SNR) is introduced, which expresses quantitatively each multi-quality- characteristic’s loss weight and loss cost of each part or component, and the quality loss function of matching deviation is proposed as weighing an effective index of matching precision. Concerning multi-mating precision of mechanical product and multi-quality characteristic of each part or component synthetically, the model of product-quality loss cost (P-QLC) facing on selective assembly is built by using thinking of integer plan, in case of guaranteeing the minimum of product quality loss cost, the goal of optimal assembly combination is achieved. An example is given to testify the validity of this method.更多还原