锻压技术

基于数值模拟的汽车转向节精密成形工艺

英文标题：Precision forming process for automobile steering knuckle based on numerical simulation

作者：王冬良陈南

单位：三江学院东南大学

分类号：TG316.3

出版年,卷(期):页码：2021,46(11):38-43

摘要：

汽车转向节结构复杂、工艺设计难度大，因此，在实际锻造过程中易出现材料折叠、局部成形不完整等问题。针对此问题，分析了转向节的成形难点，确定了转向节的成形工艺，并采用有限元分析软件Deform对成形过程中最关键的预锻工序进行了热力耦合数值模拟，从成形过程、成形力大小、锻件温度分布情况，多角度分析了开式预锻与闭式预锻的优劣情况。结果表明：开式预锻的成形力较小，但预锻件存在填充不满的缺陷；闭式预锻的成形力较大，但能获得符合要求的预锻件，且锻件温度分布均匀，质量好。最后，以闭式预锻为基础，进行了终锻模拟试验，证明了成形工艺的可靠性，并通过生产试验进行了验证，实际结果与仿真结果相吻合，获得的转向节成品件的外观良好，质量符合设计要求。

The structure of automobile steering knuckle is complex, and the process design is difficult. Therefore, in the actual forging process, the problems of material folding and incomplete local forming are prone to occur. For the above problems, the forming difficulties of steering knuckle were analyzed, and the forming process was determined. Then, the thermo-mechanical coupling numerical simulation of the most critical pre-forging process was carried out by finite element analysis software Deform, and the advantages and disadvantages of open pre-forging and closed pre-forging were analyzed from the forming process, the value of forming force and the temperature distribution of forgings. The results show that the open pre-forging has samller forming force and the defect of insufficient filling, and the closed pre-forging has larger forming force, but it could obtain the pre-forgings that meet the requirements and has uniform temperature distribution as well as good quality. Finally, based on the closed pre-forging, the simulation test of final forging was carried out to prove the reliability of the process and was verified by the production test. The actual results are consistent with the simulation results, the finished steering knuckle has good appearance, and the quality meets the design requirements.

基金项目：

江苏省高校自然科学研究基金资助项目(16KJB580007)

作者简介：王冬良（1980-），男，硕士，副教授，E-mail：wang_dongliang@sju.edu.cn；通信作者：陈南（1953-），男，博士，教授，E-mail：nchen@seu.edu.cn

参考文献：

[1]徐皓, 刘江,林雪冬,等.6061铝合金汽车转向节的预锻优化设计应用研究[J].轻合金加工技术,2020,48(5):41-44，50.

Xu H,Liu J,Lin X D,et al.Research on preforging optimization design of 6061 aluminum alloy steering knuckle[J].Light Alloy Fabrication Technology,2020,48(5):41-44，50.

[2]崔荣荣. 汽车转向节锻造工艺及有限元模拟研究[D].济南：山东大学,2008.

Cui R R.Research on Finite Element Simulation of Steering Knuckle Forging Process[D].Jinan：Shandong University,2008.

[3]林桐震, 郝雪玲,杨红卫,等.高氮不锈钢Cronidur30轴承套圈锻造工艺设计[J].轴承,2019,(4):23-25.

Lin T Z,Hao X L,Yang H W,et al.Design of forging process for bearing rings made of high nitrogen stainless steel cronidur30[J].Bearing,2019,(4):23-25.

[4]盛育东. 汽车半轴螺母冷锻成型工艺研究[D].上海：上海应用技术大学,2017.

Sheng Y D.Research on Cold Forging Process of Automobile Half Shaft Nut[D].Shanghai：Shanghai Institute of Technology,2017.

[5]黄东男, 吴南,董瑞峰,等.AZ91D镁合金散热器型材挤压模具结构优化[J].锻压技术,2019,44(10):131-138.

Huang D N,Wu N,Dong R F,et al.Optimization of extrusion mold structure for AZ91D magnesium alloy radiator profiles[J].Forging & Stamping Technology,2019,44(10):131-138.

[6]何伟, 董万鹏,孙礼宾,等.基于响应面法的齿轮轴模具磨损目标参数优化[J].锻压技术,2020,45(9):166-170.

He W,Dong W P,Sun L B,et al.Optimization on wear target parameters for gear shaft mold based on response surface method[J].Forging & Stamping Technology,2020,45(9):166-170.

[7]王家珂. 飞边槽结构对柴油机气门摇臂轴支座模锻质量的影响[J].热加工工艺,2018,47(7):168-171.

Wang J K.Influence of groove structure on die forging quality of diesel engine valve rockerarm shaft support[J].Hot Working Technology,2018,47(7):168-171.

[8]蒋磊, 龚剑,王龙,等.侧围外板浅拉延成形工艺数值模拟[J].塑性工程学报,2020,27(9):73-81.

Jiang L,Gong J,Wang L,et al.Numerical simulation of shallow drawing for body side outer panel[J].Journal of Plasticity Engineering,2020,27(9):73-81.

[9]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.

[10]赵伟平, 刘江涛,贾倩.基于Deform的齿轮泵从动齿轮轴闭式模锻数值模拟分析[J].热加工工艺,2020,49(13):93-95，99.

Zhao W P,Liu J T,Jia Q.Numerical simulation and analysis of closed die forging of gear pump follower gear shaft based on deform[J].Hot Working Technology,2020,49(13):93-95，99.

[11]何伟, 董万鹏,孙礼宾,等.基于Deform3D的发动机齿轮轴热锻成形结构优化模拟[J].塑性工程学报,2019,26(6):42-49.

He W,Dong W P,Sun L B,et al.Optimization simulation of hot forging structure of engine gear shaft based on Deform3D[J].Journal of Plasticity Engineering,2019,26(6):42-49.

服务与反馈：

【文章下载】【加入收藏】