基于尺寸工程的汽车发动机罩与亮条配合不良解决方案  

The Solution of the Gap/Segment Difference in the Matching Between the Hood and the Grating Bright Strip Based on Dimension Engineering

作　　者：曾平 刘鹏 高钦杰 ZENG Ping;LIU Peng;GAO Qinjie(GAC Motor Co.,Ltd.,Guangzhou Guangdong 511434,China)

机构地区：[1]广汽乘用车有限公司,广东广州511434

出　　处：《汽车零部件》2021年第9期59-65,共7页Automobile Parts

摘　　要：基于某车型发动机罩与格栅亮条配合存在间隙/段差不良问题进行分析研究,利用尺寸工程手段,提出了缩短和优化尺寸链方案,在前端模块设计结构上增加了前端模块L型支架,较少公差累计造成的波动;通过装配定位方案优化和车身结构安装点焊接层级的改善,以及优化前端模块工装定位方案,提高了焊装和总装装配一致性。该方案提供了发盖与亮条存在配合关系结构的一种系统解决方案,提升了发盖与亮条配合间隙/段差的保证能力,并提高了前围配合外观精致性。Based on the analysis and research of the gap/segment difference in the matching between the hood and the grating bright strip of a certain vehicle,a scheme of shortening and optimizing the dimension chain was proposed by means of dimensional engineering.The front-end module design structure was added with the L-shape bracket of the front-end module to reduce the fluctuation caused by accumulated tolerances.By optimizing the assembly positioning scheme,improving the welding level at the installation point of the body structure,and optimizing the front-end module tooling positioning scheme,the consistency of welding and assembly and assembly was improved.The scheme provides a system solution for the structure of the matching relationship between the hood and the bright strip,which improves the guarantee ability of the gap/segment difference between the hood and the bright strip,and improves the fineness of the front fitting appearance.

关 键 词：尺寸工程 尺寸链 前端模块 DTS 3DCS 

分 类 号：U463[机械工程—车辆工程]