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摘要：
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为了降低转向齿扇成形载荷、提高成形模具寿命，通过对转向齿扇的结构特点和工艺性分析，结合多向成形金属流动特点，提出了转向齿扇多向精密成形工艺方案。采用有限元模拟软件DEFORM-3D，对转向齿扇多向精密成形过程进行了数值模拟，对其成形过程中的金属流动规律进行了分析并预测成形载荷。结果表明，成形过程中齿扇充填均匀，角隅充填饱满，多向精密成形工艺最大成形载荷比单向闭塞挤压成形载荷降低了29%，成形时间缩短了53%，有利于提高模具的使用寿命。对多向精密成形工艺进行了成形试验，试验成形出的转向齿扇充填饱满，成形载荷与预测载荷基本一致。试验结果表明了该工艺的可行性和实用性。
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In order to reduce the forming load of steering gear and increase the life of forming die, based on the analysis of structural characteristics and technicality of steering gear, and combined with the characteristics of metal flow in multi-directional forming process, a multi-directional precision forming process scheme of steering gear was developed. Then, the multi-directional precision forming process of steering gear was simulated by finite element simulation software DEFORM-3D，and the metal flow law in the forming process was analyzed and the forming load was predicted. The results show that the steering gear is filled evenly, and the corner is filled fully. However, the maximum forming load of the multi-directional precision forming process is 29% lower and the forming time is 53% shorter than that of the unidirectional block extrusion forming, and they are beneficial to increase the life of forming die. Furthermore, the experiment of the multi-directional precision forming is conducted, the formed steering gear is filled fully, and the forming load is basically consistent with the predicted load. Thus, the experimental results show that the process scheme is feasible and practical.
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基金项目：
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郑州市重大科技专项资助项目（152PZDZX007）
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作者简介：
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刘丹（1981-），男，硕士，高级工程师，E-mail：13592445859@163.com
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参考文献：
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[1]赵德颖, 张连东, 朱恩领, 等. 挤压工艺参数对枝杈类锻件折叠缺陷的影响[J]. 塑性工程学报, 2018, 25 (2): 99-105.
Zhao D Y, Zhang L D, Zhu E L, et al. Effects of extrusion processing parameters on folding defects in branch-type forging[J]. Journal of Plasticity Engineering, 2018, 25 (2): 99-105
[2]刘扬.汽车轮毂轴承单元精锻成形工艺分析及有限元模拟[D]. 武汉：武汉理工大学，2009.
Liu Y. Precision Forging Process Analysis and Finite Element Simulation of Automobile Hub Bearing Unit[D].Wuhan: Wuhan University of Technology,2009.
[3]周志明,胡洋，唐丽文. EQ153 转向节多向精密模锻工艺数值模拟[J]. 热加工工艺, 2014, 43(3): 106-108.
Zhou Z M, Hu Y, Tang L W. Numerical simulation of multi-directional precision die forging process of EQ153 steering knuckle [J]. Hot Working Technology, 2014, 43(3): 106-108.
[4]任运来，聂绍珉，苗雅丽.多向模锻技术的发展及应用[J].重型机械,2014,(4): 1-8.
Ren Y L，Nie S M，Miao Y L.Development and application of multi-ram forging technology[J]. Heavy Machinery，2014, (4): 1-8.
[5]吕琳，周杰，邓明. 闭挤式精冲直齿轮成形面的显微力学化学行为分析 [J].塑性工程学报，2018,25（1）：156-160.
Lyu L, Zhou J, Deng M. Analysis on the micro mechanical and chemical behaviors of forming surface of closed-extruding fine blanking spur gear [J].Journal of Plasticity Engineering，2018,25（1）：156-160.
[6]郭开元, 张如华, 吴泽, 等.主动螺旋锥齿轮镦挤成形方案的对比研究[J].塑性工程学报, 2018,25（6）: 111-117.
Guo K Y, Zhang R H, Wu Z, et al. Comparative study on upsetting extrusion forming schemes of spiral bevel driving gear [J].Journal of Plasticity Engineering, 2018,25（6）: 111-117.
[7]任伟伟，徐春国，陈翔龙. 铝合金控制臂多向挤压制坯及模锻成形工艺[J]. 锻压技术, 2018, 43(8): 110-115.
Ren W W，Xu C G，Chen X L. Process of multi-directional extrusion and die forging for control arm of aluminum alloy [J]. Forging & Stamping Technology, 2018, 43(8): 110-115.
[8]刘丹，郑晓茜，刘华，等.斜齿轮冷精密成形工艺数值模拟及实验研究[J].热加工工艺，2016,45（3）:177-179.
Liu D, Zheng X X, Liu H, et al. Numerical simulation and experimental study of precision cold forming helical gear[J]. Hot Working Technology，2016,45（3）:177-179.
[9]周结魁，薛克敏，徐迎强，等.机座体多向热挤压成形工艺[J].锻造与冲压，2011，(11): 86-87.
Zhou J K，Xue K M，Xu Y Q，et al. Multi direction hot extrusion forming process of seat body[J].Forging ＆ Metalforming, 2011, (11): 86-87.
[10]郭晓锋，杨合，孙志超. 三通件多向加载成形热力耦合有限元分析[J].塑性工程学报, 2009，16（4）：85-90.
Guo X F, Yang H, Sun Z C. Coupled thermal-mechanical FEM analysis on multi-way loading forming process of triple valve body[J]. Journal of Plasticity Engineering, 2009，16（4）：85-90.
[11]王以华.锻模设计技术及实例[M]. 北京：机械工业出版社，2009.
Wang Y H. Forging Die Design Technology and Examples [M]. Beijing: China Machine Press,2009.
[12]曾德涛，周杰，张辉，等.某齿轮坯精锻金属流动规律分析及工艺优化[J]. 热加工工艺，2012,41（5）:84-86.
Zeng D T，Zhou J，Zhang H，et al .Metal flow analysis of precision forging process and optimization of technology for gear blank [J]. Hot Working Technology，2012, 41（5）:84-86.
[13]杨程, 丁伯艮, 庄晓伟, 等. 不对称喷油器体闭塞锻造成形[J]. 塑性工程学报, 2018, 25（4）: 21-25.
Yang C, Ding B G, Zhuang X W, et al. Closed die forging of asymmetry fuel injector body[J]. Journal of Plasticity Engineering, 2018, 25（4）: 21-25.
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