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本文提出了一种新的公差设计的多目标优化模型。该模型是以各组成零件的加工成本（即成本公差模型）和质量损失成本之和最小作为多目标函数。实验结果表明，这种方法所给出的公差较符合经济加工的要求。
In this paper, a new multi-objective optimization model of tolerance design is proposed. The model is a multi-objective function that minimizes the sum of the processing costs (ie, the cost tolerance model) and the mass loss costs of each component. Experimental results show that this method gives the tolerance more in line with the requirements of economic processing.