锻压技术

基于有限元分析的螺套冷锻工艺改进

英文标题：Improvement of cold forging process for screw sleeve based on finite element analysis

作者：李蕊1 游晓燕2

分类号：TG316.3

出版年,卷(期):页码：2024,49(8):21-28

摘要：

为解决通过冷锻配合机加工生产EPB螺套时暴露出的生产率低、成本高等问题，为其重新制定了一种全自动冷锻方案，并以实际材料作为试验前提，通过Deform-3D进行了全过程数值仿真，结果发现存在金属折叠缺陷，通过金属流动分析确定了折叠缺陷产生于镦头工位，产生原因为金属弯曲。为消除缺陷，在原工艺基础上进行了优化，提出通过“镦粗+反挤压+浮动反挤压”成形方案来替代原来的“正挤压+反挤压+镦头”成形方案。仿真结果表明，工艺优化后折叠缺陷完全消除，各工位零件外形完整，截面流线连续，螺套质量好。实际锻造试验表明，全过程均未出现成形缺陷，与预测情况符合，并且螺套质量稳定，生产效率和效益显著提升，达到了企业的预期标准。

In order to solve the problems of low productivity and high cost in the production of EPB screw sleeve by cold forging combined with machining, a fully automatic cold forging scheme was redefined, and based on the test using the actuel material, the whole process was simulated by Deform-3D. Then, the results shows that there are metal folding defects, and it is determined that the folding defect occurre at the heading station and the cause is metal bending by analyzing the metal flow. Furthermore, in order to eliminate the defect, the optimization was carried out on the basis of the original process, and the forming scheme of “upsetting+backward extrusion+floating back extrusion” was proposed to replace the original forming scheme of “forward extrusion+backward extrusion+heading”. The simulation results show that after the process optimization, the folding defects are completely eliminated, and the shape of part at each station is complete, the cross-sectional streamline is continuous, and the quality of screw sleeve is good. The actual forging test shows that there are no forming defects throughout the whole process, which is consistent with the predicted result. The quality of screw sleeve is stable, and the productivity and efficiency are significantly improved, meeting the expected standards of the enterprise.

基金项目：

作者简介：李蕊（1987-），女，学士，讲师 E-mail：lirui996633@126.com

参考文献：

[1]何果,韩彦潇,李青章,等.某新能源商用车的EPB开发系统分析[J].汽车实用技术,2022,47(21):196-201.

He G, Han Y X, Li Q Z, et al. Analysis on the EPB development system of a new energy commercial vehicle[J].Automobile Applied Technology,2022,47(21):196-201.

[2]周玉甲.汽车差速器齿套冷锻工艺分析与优化[J].锻压技术,2023,48(10):24-30.

Zhou Y J.Analysis and optimization on cold forging process for automotive differential gear sleeve[J].Forging & Stamping Technology,2023,48(10):24-30.

[3]陈凌翔,李月超.汽车六角球头冷锻工艺优化与数值仿真[J].材料科学与工艺,2020,28(5):75-82.

Chen L X,Li Y C. Optimization and numerical simulation of cold forging process for automobile hexagonal ball head[J].Materials Science and Technology,2020,28(5):75-82.

[4]王晓伟.基于有限元分析的汽车十二角半轴螺母冷镦工艺开发与应用[J].塑性工程学报,2023,30(7):62-70.

Wang X W. Development and application of cold upsetting process for automobile twelve corner half axle nut based on finite element analysis[J].Journal of Plasticity Engineering,2023,30(7):62-70.

[5]马世登,奚建清.基于Deform的齿轮支架锻造成形仿真分析[J].热加工工艺,2017,46(7):148-149，152.

Ma S D, Xi J Q. Simulation analysis for forging forming of gear bracket based on Deform[J].Hot Working Technology,2017,46(7):148-149，152.

[6]胡锦玲,胡强.基于有限元的转轴多级锻造成形仿真及试验研究[J].热加工工艺,2019,48(7):164-167.

Hu J L,Hu Q. Simulation and experimental research on multi-stage forging forming of rotary shaft based on finite element[J].Hot Working Technology,2019,48(7):164-167.

[7]郑鹏辉,关悦,许吉星,等.A286高温合金十二角法兰面螺栓多工位冷镦成形工艺[J].制造技术与机床,2022(7):45-50.

Zheng P H,Guan Y,Xu J X,et al.Multi station cold heading process of A286 superalloy twelve point flange bolt[J].Manufacturing Technology & Machine Tool,2022(7):45-50.

[8]胡建军,李小平.Deform-3D塑性成形CAE应用教程[M].北京:北京大学出版社,2011.

Hu J J,Li X P.Deform-3D Plastic Forming CAE Application Tutorial[M].Beijing:Peking University Press,2011.

[9]张国庆,王福明,庞瑞朋,等.SWRCH35K冷镦钢球化退火工艺[J].金属热处理,2013,38(5):83-87.

Zhang G Q,Wang F M,Pang R P,et al. Spheroidizing annealing of SWRCH35K cold heading steel[J].Heat Treatment of Metals,2013,38(5):83-87.

[10]陈剑,张东民,周伟民,等.球头销多工位冷镦挤工艺研究及模具设计[J].热加工工艺,2018,47(11):153-156.

Chen J,Zhang D M,Zhou W M,et al. Process research and die design of multi-station cold upsetting-extrusion of ball head pin[J].Hot Working Technology,2018,47(11):153-156.

[11]闫培泽.基于有限元模拟的汽车专用异形螺母冷镦缺陷分析与改进[J].锻压技术,2022,47(12):21-26.

Yan P Z.Analysis and improvement on cold heading defect of special-shaped nuts for automobile based on finite element simulation[J].Forging & Stamping Technology,2022,47(12):21-26.

[12]闫中原,张晓波,徐洪磊,等.齿套闭塞式锻造成形研究[J].精密成形工程,2022,14(2):33-38.

Yan Z Y,Zhang X B,Xu H L,et al.Closed die forging forming of the truncated tooth sleeve[J].Journal of Netshape Forming Engineering,2022,14(2):33-38.

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