锻压技术

板材累积变形工艺

英文标题：Cumulative deformation process for plate

作者：潘立栋1 郭永强2 3 李硕2

单位：1.中国机械总院集团北京机电研究所有限公司中机精冲科技（福建）有限公司扬州分公司 2. 中国机械总院集团北京机电研究所有限公司 3. 北京科技大学材料科学与工程学院

分类号：TG376

出版年,卷(期):页码：2023,48(12):105-110

摘要：

针对板材带特征筋一体化成形展开研究，提出了板材累积变形工艺，其原理是在正向挤压凸模运动下，引入反相挤压凸模，通过对变形区的控制达到对材料的累积变形进而实现工件的整体成形。通过有限元模拟，分析了累积变形过程，发现变形区高度在超过10.8 mm后一定会出现失稳凹陷;当反向挤压凸模与正向挤压凸模的速度比为3/5时累积变形效果良好。基于正交实验的研究结果，归纳了挤压速度、材料温度、模具圆角以及摩擦因数对控制变形区高度的影响规律及显著性，得出在短行程凸模运行过程中，对于该工艺影响最大的因素为材料的加热温度。最后，通过实验验证了该工艺模型的准确性。板材累积变形工艺的开发对于板材成形特征筋等功能集成的工件一体化成形具有指导意义。

The integrated forming of plates with characteristic ribs was researched, and a cumulative deformation process for plates was proposed. Then, the principle was to introduce a reverse extrusion punch under the movement of the forward extrusion punch and achieve the overall forming of workpiece by controlling the deformation zone to achieve cumulative deformation of material. Then, through finite element simulation, the cumulative deformation process was analyzed, it was found that the instability depression definitely appeared after the height of the deformation zone exceeded 10.8 mm, and when the speed ratio of the reverse extrusion punch to the forward extrusion punch was 3/5, the cumulative deformation effect was good. Based on the research results of orthogonal experiments, the influence rules and significance of extrusion speed, material temperature, mold fillet and friction factor on the height of the controlled deformation zone were summarized, and it was concluded that during the operation process of the short-stroke punch, the factor that had the greatest impact on this process was the heating temperature of material. Finally, the process model was experimentally verified, and the development of the cumulative deformation process for plate has guiding significance for the integrated forming of workpieces with integrated functions such as plate forming characteristic ribs.

基金项目：

作者简介：潘立栋（1996-），男，硕士研究生 E-mail：pld63639873@163.com 通信作者：郭永强（1984-），男，博士，教授 E-mail：guoyq@brimet.ac.cn

参考文献：

[1]姚泽坤.锻造工艺学与模具设计 [M]. 第2版.西安:西北工业大学出版社,2007.

Yao Z K. Forging Technology and Die Design [M]. 2th Edition. Xi′an: Northwestern Polytechnical University Press, 2007.

[2]荣烈润.新世纪材料成形加工技术的发展趋势[J].金属加工:热加工,2012,(23):36-38.

Rong L R. The development trend of material forming processing technology in the new century [J].MW Metal Forming, 2012,(23): 36-38.

[3]陈戟铭. 薄壁管数控弯曲成形壁厚变薄的数值分析[D].西安：西北工业大学,2003.

Chen J M. Numerical Analysis of Wall Thickness Thinning in CNC Bending of Thin-walled Tubes [D]. Xi′an: Northwestern Polytechnical University, 2003.

[4]丁泰然,胡成亮,赵震,等.管坯镦挤成形工艺成形极限的上限法分析[J].塑性工程学报,2019,26(4):28-33.

Ding T R, Hu C L, Zhao Z, et al. Analysis of upper limit method on forming limit of tube billet upsetting and extrusion forming process [J]. Journal of Plasticity Engineering, 2019, 26(4): 28-33.

[5]朱圣法. 基于可控变形区的侧壁镦锻成形工艺研究[D].上海：上海交通大学,2019.

Zhu S F. Research on Sidewall Upsetting Forming Process Based on Controllable Deformation Zone [D]. Shanghai：Shanghai Jiao Tong University, 2019.

[6]杜顾伟,王华,吕自贵,等.金属板材渐进成形工艺仿真精度的影响因素[J].锻压技术,2022,47(12):68-74.

Du G W, Wang H, Lyu Z G, et al. Influencing factors on simulation accuracy of sheet metal incremental forming process[J]. Forging & Stamping Technology, 2022,47(12) : 68-74.

[7]Gontarz A, Winiarski G. Numerical and experimental study of producing flanges on hollow parts by extrusion with a movable sleeve[J]. Archives of Metallurgy and Materials,2015,60(3)：1917-1922.

[8]徐成,庄新村,赵震.板料冲锻成形工艺的特点及其应用[A]. 全球华人塑性技术研讨会[C].武汉，2013.

Xu C, Zhuang X C, Zhao Z. Characteristics and application of sheet metal stamping and forging forming technology [A]. Global Chinese Plastic Technology Symposium[C].Wuhan，2013.

[9]Wang Z G, Yoshikawa Y, Osakada K. A new forming method of solid bosses on a cup made by deep drawing[J]. CIRP Annals-Manufacturing Technology,2013, 62(1):291-294.

[10]周丽新,王忠堂.板材零件局部体积成形技术研究[J].塑性工程学报, 2008, 15(2): 31-36.

Zhou L X, Wang Z T. Research on local volume forming technology of sheet metal parts [J]. Journal of Plasticity Engineering, 2008, 15(2): 31-36.

[11]Groche P, Fritsche D, Tekkaya E A, et al. Incremental bulk metal forming[J]. CIRP Annals-Manufacturing Technology, 2007, 56(2): 635-656.

[12]Hildenbrand P, Schneider T, Merklein M. Flexible rolling of process adapted semi-finished parts and its application in a sheet-bulk metal forming process[J].Key Engineering Materials, 2015, 639:259-266.

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