中文摘要：

在重点推导了具有多重相关特征产品的质量损失与尺寸公差的函数关系的基础上，提出了多重相关特征产品的公差优化设计方法，建立了基于制造成本一质量损失的公差优化设计的综合模型，建立该模型的目的是寻求制造成本和质量损失之间的平衡，实现旨在提高产品质量和降低成本的公差优化设计。应用实例验证了所提出方法的有效性。

英文摘要：

This paper presented a tolerance design method based on the quality loss function with multi-correlated characteristics. The discussions focused on the derivation of functional relationship between the quality loss of products with multi-correlated characteristics and dimension tolerances, and a comprehensive model for optimal tolerance design was established based on manufacturing cost -quality loss. The purpose of the model was to balance manufacturing cost and quality loss so that optimal tolerance design is achieved and quality improvement and product cost reduction is realized. An example involving optimal tolerance design for products with correlated characteristics was presented to demonstrate the effectiveness of the proposed method.