基于改进成本公差模型的并行公差优化设计

在总结传统成本公差模型的基础上,从资金的时间价值角度对传统成本公差模型进行改进,提出了改进后的成本公差模型.利用改进后的成本公差模型,并将制造成本和质量损失成本同时应用到并行公差设计的目标函数中,实现公差的优化设计.最后通过工程实例验证所提出的方法.结果表明：改进的成本-公差模型更贴近现实,计算出的总成本更合理,有效反映了资金的时间价值、物价上涨等现实因素.

Concurrent Tolerancing Optimization Design Based on Improved Cost-Tolerance Model

On the basis of summarizing traditional cost-tolerance model,the traditional cost-tolerance model was improved from the time value of money angle.An improved cost-tolerance model was put forward.The improved cost-tolerance model was applied,meanwhile,the cost of manufacture and quality lose cost were applied to concurrent tolerancing design object functions,concurrent tolerancing optimization design was obtained.An applied prototype was illustrated with improved cost-tolerance model.Results indicate that the data with improved cost-tolerance model is close to the realism,the total cost is reasonable,and it effectively reflects time value of money and price advancing.