锻压技术

不同搭边对微型电机外壳级进拉深成形质量的影响规律

英文标题：Influence law of different edge on forming quality of progressive deep drawing for micro motor shell

作者：黄珍媛陈景茂魏婉珠谢佳娜陈敏生

分类号：TG386.3

出版年,卷(期):页码：2022,47(11):95-100

摘要：

针对某微型电机外壳，设计了级进冲压工艺方案，该方案设计了一种先变形后拉伸的新型柔性搭边结构；利用软件对微型电机外壳多道次拉深成形过程进行了模拟分析，并根据材料利用率、搭边平均厚度、最大减薄率和壁厚变化趋势等指标，比较了采用柔性搭边结构和传统搭边结构对微型电机外壳产品的影响，获得了不同的搭边形式对级进拉深成形过程中产品壁厚变化的影响规律。通过理论分析和实际的生产结果表明：在生产过程中，切废料式搭边直接被拉伸，搭边与工序件连接处易发生撕裂现象，而柔性搭边先发生变形再被拉伸，减薄率极小，安全性相对较高；且新型柔性搭边结构与传统搭边结构相比，在级进拉深中稳定性更高、材料流动性更好、壁厚均匀性更高、材料利用率更高，材料最大减薄率仅次于切缝式搭边。

For a micro motor shell, a process scheme of progressive stamping was designed, which was a new type of flexible edge structure that was deformed first and then stretched, and the multi-pass deep drawing process of micro motor shell was simulated and analyzed by software. Then, according to material utilization rate, average edge thickness, maximum thinning rate and change trend of wall thickness and other indicators, the influences of flexible edge structure and traditional edge structure on the micro motor shell products were compared, and the influence laws of the different edge forms on the wall thickness of product during the progressive deep drawing process were obtained. The theoretical analysis and actual production results show that in the production process, the edge of scrap cutting type is directly stretched, and the connection between edge and process part is prone to tearing. While the flexible edge is deformed first and then stretched, the thinning rate is extremely small and the safety is relatively high. In addition, compared with the traditional edge structure, the new type of flexible edge structure has higher stability in the progressive deep drawing, better material fluidity, higher wall thickness uniformity and higher material utilization rate, and the maximum thinning rate of material is only second to the edge of slit type.

基金项目：

2020年广东省科技大专项目揭阳专项（x2jq-B8210180）

作者简介：黄珍媛（1975-），女，博士，副教授，E-mail：zhenyuan@scut.edu.cn；通信作者：陈景茂（1999-），男，硕士研究生，E-mail：1427658768@qq.com

参考文献：

[1]严培霞,刘世群.圆形拉伸件无搭边排样冲压工艺[J].科技创业家,2013,(5):80.

Yan P X,Liu S Q.Stamping process of circular drawing parts without edges[J]. Technological Pioneers, 2013,(5):80.

[2]胡成武，李光，毛远征，等.圆筒形件的拉深变形与应力分析[J].塑性工程学报，2020，27（3）：130-136.

Hu C W，Li G，Mao Y Z，et al. Stress analysis and deformation of deep drawing for cylindrical part [J].Journal of Plasticity Engineering，2020，27（3）：130-136.

[3]黎敏绯,周国荣.谈多工位级进模冲压件的排样与搭边技术[J].职业技术,2007，(8):146.

Li M F, Zhou G R. The layout and edging technology of multi-station progressive die stamping parts are discussed[J]. Vocational Technology,2007，(8):146.

[4]曹立生.少无废料冲裁在电机零件生产中的应用[J].模具工业,2007，33(9):31-33.

Cao L S. Application of no-waste blanking in manufacture of electric motor component[J]. Die & Mould Industry, 2007，33(9):31-33.

[5]鲁建平.壳体零件多工位拉深级进模设计[J].模具工业,2016,42(8):26-30.

Lu J P.Design of multi-station drawing progressive die for shell part[J]. Die & Mould Industry, 2016,42(8):26-30.

[6]徐自明.薄壁深筒矩形件冲压工艺及级进模设计[J].模具技术,2011，(1):14-17.

Xu Z M. Stamping process and design of progressive die for rectangular parts with thin wall deep cylinder [J].Tool and Die Technology,2011，(1):14-17.

[7]何凌,邓汝荣,黄雪梅.阶梯长圆盒形件拉深级进模设计[J].模具工业,2018,44(1):22-25.

He L,Deng R R,Huang X M. Drawing progressive die design of step long-roll rectangular box[J]. Die & Mould Industry,2018,44(1):22-25.

[8]吴良周,龙智雄,赵成寅,等.方形罩壳成形工艺与模具设计[J].模具工业,2019,45(11):9-14.

Wu L Z,Long Z X,Zhao C Y,et al. Forming process of square enclosure and the die design [J].Die & Mould Industry, 2019,45(11):9-14.

[9]杨晓龙,刘莎莎,王栓强.薄壁零件成形工艺与模具设计[J].模具工业,2014,40(6):36-38.

Yang X L,Liu S S,Wang S Q. Forming process and design of die for thin-walled part [J]. Die & Mould Industry,2014,40(6):36-38.

[10]虞婕华,黄幸.拉伸件制造工艺及复合模设计[J].模具制造,2020,20(6):28-29.

Yu J H,Huang X. Manufacturing technology of drawing parts and design of compound die [J]. Die & Mould Manufacture,2020,20(6):28-29.

[11]仇建桐，邓沛然，邵威，等. 6061铝合金热拉深成形研究[J].塑性工程学报,2020,27(9):124-131.

Qiu J T, Deng P R, Shao W,et al. Study on hot deep drawing of 6061 aluminum alloy [J].Journal of Plasticity Engineering,2020,27(9):124-131.

[12]刘志良.高矩形罩壳拉深成形工艺改进[J].模具工业,2016,42(8):31-34，41.

Liu Z L. Improvement of drawing process for high rectangle cover [J].Die & Mould Industry,2016,42(8):31-34，41.

[13]赖辉.冲裁工艺中对材料的充分利用及搭边值的优化[J].制造业自动化,2011,33(23):44-46.

Lai H. Fully use materials by blanking and optimization of overlapping value [J]. Manufacturing Automation, 2011,33(23):44-46.

[14]张成浩.不锈钢外壳拉深成形工艺设计与改进措施[J].模具工业,2015,41(1):35-38.

Zhang C H.Drawing forming process design and improvement measures of stainless steel shell [J]. Die & Mould Industry,2015,41(1):35-38.

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