2023年第5期2023No.5汽车工艺与材料AutomobileTechnology&Material商用车顶盖提质降本量产工艺优化及试验验证姜岩李敬梓富壮寇兆阳张凤君孟庆磊(一汽解放汽车有限公司,长春130011)摘要:为解决某商用车中顶盖振动和噪声问题,在中顶盖增加4片补强胶片,但增加了生产成本,且焊装贴补强胶片后经过涂装时易剥落。大型覆盖件出现振动和噪声的根本原因是零件刚度低,因此提出在满足减薄率要求的前提下增大加强筋高度。经过冲压分析、样件试制、路试验证最终确定中顶盖刚度提升方案为加强筋高度由3.0mm增加至7.5mm,同时解决零件拉延下转角开裂问题,以实现整体加大压边力、减少残余应力。取消补强贴片后单车成本节约45元。关键词:商用车中顶盖NVH刚性提升冲压中图分类号:U468.2+1文献标识码:BDOI:10.19710/J.cnki.1003-8817.20220338MassProductionProcessOptimization&TestVerificationForQualityImprovementandCostReductionofCommercialVehicleRoofJiangYan,LiJingzi,FuZhuang,KouZhaoyang,ZhangFengjun,MengQinglei(FAWJiefangAutomobileCo.,Ltd.,Changchun130011)Abstract:Inordertoreducevibrationandnoisefromcentralroofincommercialvehicles,4reinforcingfilmswereaddedtothecentralroofatadditionalproductioncosts,andthefilmswereeasytofalloffafterpainting.Therootcauseofvibrationandnoiseinlargecoverpartsistheweakrigidityofthepart,thepaperthereforeproposedtoincreasetheheightofthereinforcingribwhilemeetingthethinningraterequirements.Afterstampinganalysis,prototypeproductionandroadtest,thefinalsolutiontoimprovetherigidityofthecenterroofwastoincreasetheheightofthereinforcingribfrom3.0mmto7.5mm.Theproblemofcornercrackingindrawingwassolvedtoincreasecrimpingforcesandreduceresidualstresses.Thecostpervehicleisreducedby45yuanbyeliminatingthereinforcingfilm.Keywords:Commercialvehicle,Centerroof,NVH,Rigidityimprovement,Stamping作者简介:姜岩(1991—),女,工程师,硕士学位,研究方向为冲压同步工程。参考文献引用格式参考文献引用格式:姜岩,李敬梓,富壮,等.商用车顶盖提质降本量产工艺优化及试验验证[J].汽车工艺与材料,2023(5):31-34.JIANGY,LIJZ,FUZ,etal.MassProductionProcessOptimization&TestVerificationForQualityImprovementandCostReductionofCommer⁃cialVehicleRoof[...