摘要
针对汽车覆盖件修边过程中产生的碎屑导致板料表面凹凸及生产效率低等问题,介绍了碎屑的类型及产生机理,提出了通过修配刃口间隙、减少翻边与整形压料面积及在下模刃口增加碎屑吸收装置等改进措施,并对某车型翼子板修边模进行生产验证。试验结果表明,采取上述措施后修边碎屑改善明显,板料表面无离散凹凸点,生产百件擦试模具频次由0.85降低至0.27,制件一次性下线合格率(FTQ)由82.8%提升至96.8%。
As for the sheet-metal surface defects and low production efficiency causing byscraps in trimming process of the automobile covering panels, the type and generationmechanism of the scraps was described and the improvement measures were put forwardincluding optimizing trimming gaps, reducing trimming binder surface area and adding anabsorber device. And the measures above were tested in a car fender trimming die. Test re-sults showed that the trimming scraps were significantly decreased after the adoption ofthe above measures. There was no discrete concave-convex point in sheet-metal surface,the mould cleaning frequency in every hundred stroke was decreased from 0.85 to 0.27,and the fLrst time quality of parts was improved from 82.8% to 96.8%.
作者
张莹
韦荣发
蒙世瑛
石峰
吴海刚
ZHANG Ying, WEI Rong-fa, MENG Shi-ying, SHI Feng, WU Hai-gang(SAIC-GM Wuling Automobile Co., Ltd, Liuzhou, Guangxi 545005, Chin)
出处
《模具工业》
2018年第3期10-13,29,共5页
Die & Mould Industry
关键词
修边
碎屑
表面凹凸
刃口间隙
吸收装置
trimming
scraps
surface defects
cutting edge gap
absorber device
