基于尺寸工程的某车型掀背门与后保险杠段差不良问题分析与解决

Solving the Gap Issue between Hatchback and Rear Bumper Based on Dimension Engineering

在某车型调试过程中,经过多次装配,发现掀背门与后保险杠段差不良缺陷。通过3DCS公差校核、尺寸链分析以及精度调查、工序变量分析,得到影响掀背门与后保险杠段差的主要因素有零件精度、车身精度、涂装烘烤变量。通过改善零件精度、增加工装,最终消除了该段差不良。

There is a gap issue between hatchback and rear bumper,after repeated assembly,during the process of debugging.The 3DCS tolerance checking,dimension chain analysis and precision investigation,process variables analysis technologies were used.The results showed that parts precision,body precision and variable of painting were the main reasons,which affected the gap between hatchback and rear bumper.The gap issue is solved,by improving the precision of the parts and increasing the tooling.