汽车覆盖件翻边交刀常见缺陷的改善对策

摘要

在冲压开发过程中,对于机盖外板、背门外板、侧围、翼子板等车身覆盖件,均存在多个角度翻边的特性,就必然存在交刀翻边,制件在翻边交刀位置易产生面品缺陷,如R不顺、A面凹陷、双棱线等,交刀面品缺陷属于外板缺陷中发生概率高,返修难度大,很难彻底消除的问题,直接影响整车外观视感.通过前期工艺分析、工法结构设计进行充分的审查,做出相应的预判,通过工艺改善措施减少交刀问题点遗留到现场,通过对现场钳工的操作指导,减少钳工的返修工时.对外板件翻边交刀问题点进行原因剖析,针对性提出问题点的改善措施,解决翻边交刀面品缺陷并做出相应的预防.%In the process of stamping development, for conventional automobile body covering parts such as cover skin plate, back outer panel, side wall, fender and so on, because the existence of flange cookie bite in flange cookie bite position tend to produce defects, with high probability in the outer panel defect, difficult to rework in manual repairing, unable to eliminate the problem completely, can cause the vehicle part R angle flare and influence the vehicle plate visual sense.Therefore, it is necessary for us to fully review at the preliminary process analysis, construction method and structural design, and make a full preliminary judgment, so as to reduce the problem points left over to the site through the early process.The rework time can be reduced by guiding the toolmen on site.This article analyzes the reason of the problem points of flange cookie bite of the outer panel, carries out the improvement measures of the corresponding problem points, solves the problem of cookie bite thoroughly and makes the corresponding precaution.