基于6σ的零阶差车门系统公差设计  

Tolerance Design of Flush Door System Based on 6σ

作　　者：蒋超 肖谦 展若雨 罗健 邝文峰 Jiang Chao;Xiao Qian;Zhan Ruoyu;Luo Jian;Kuang Wenfeng(NIO,Hefei 230071)

机构地区：[1]蔚来,合肥230071

出　　处：《汽车工艺与材料》2023年第10期18-24,共7页Automobile Technology & Material

摘　　要：通过设计试验(DOE)建立了零阶差车门系统关键质量特性玻璃面差与玻璃升降扭矩的仿真模型,分析响应变量的显著影响因素,并通过蒙特卡洛(Monte Carlo)模拟了公差优化前后系统的稳健性。结果表明,玻璃面差与玻璃升降扭矩仿真模型的决定系数R2分别为0.9686、0.9639时,模型的相关性均较好;理想情况下的公差优化后玻璃面差与玻璃升降扭矩的产品超差率分别从0.62%和1.71%降低为0。同时,结合大批量生产与工艺制造能力的实际情况将公差带重新划分后,玻璃面差与玻璃升降扭矩产品超差率分别降低了0.60%和1.67%,大幅度提升了系统公差设计的稳健性。Through the Design Of Experiment(DOE),the simulation model of glass flush and lifting torque,the key quality characteristics of Flush Door system,was established,and the significant factors affecting response variables were analysed,and the system robustness before and after tolerance optimization was simulated by Monte Carlo.The Simulation results show that the determination coefficient(R2)of glass flush and lifting torque are 0.9686 and 0.9639 respectively,which indicates the models agree well with experimental data.After tolerance optimization,the product out-of-tolerance rates of glass flush and lifting torque are reduced from 0.62%and 1.71%to 0 respectively.At the same time,the redistribution of the tolerance zones has reduced the product out-of-tolerance rates by 0.60%and 1.67%respectively,significantly improving the robustness of the system tolerance design.

关 键 词：零阶差车门系统 设计试验 蒙特卡洛模拟 公差设计 

分 类 号：U462.2[机械工程—车辆工程]