Transactions of Materials and Heat Treatment

Title：Defect analysis on warm forging and shape optimization on preforging part for an automobile transmission with 126R gear tooth

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ClassificationCode：TG315.2

year,vol(issue):pagenumber：2019,44(8):6-11

Abstract：

For an automobile transmission with 126R gear tooth, a finite element model of its closed warm forging process was established by FE software Deform3D, and the force and material flow in the forming process were obtained. Then, the problems of incomplete filling of flange, large forming load and low mold life during the forming process of 126R gear tooth were studied, and the influencing factors on final forging forming and mold force were analyzed. Therefore, the new preforging process scheme was proposed, and the optimized process scheme was simulated. Furthermore, the feasibility of the new optimized process scheme was identified by comparing and analyzing with the original process scheme, and the optimized process was verified by actual production. The results show that the optimized process can form the parts to fill completely and meet the technical requirements of the product under the conditions of lower forming load and can improve the life and production efficiency of the mold.

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陈伟文（1994-），男，学士，工程师 Email：417706079@qq.com

Reference：

[1]周煊,吴先洋,张海英,等. 基于正交试验法的齿类温锻件冲孔工艺优化[J]. 锻压技术, 2017, 42(10): 19-25.

Zhou X, Wu X Y, Zhang H Y, et al. Optimization on piercing process of warm forging gear parts based on orthogonal experiment [J].Forging & Stamping Technology, 2017, 42(10): 19-25.

[2]叶伟昌.模具技术的现状与进展[J].机械工艺师,1996,(5):31-33.

Ye W C. Status and progress of molding technology [J].Machinery Manufacturing Engineer, 1996,(5):31-33.

[3]骆静.汽车变速器结合齿精密成形及模具关键技术研究[D]. 重庆:重庆理工大学, 2012.

Luo J. Research on Precision Forming and the Key Technology of the Die for Auto Transmission Conjunction Gear [D]. Chongqing: Chongqing University, 2012.

[4]孙正力,李振红,由爽,等. 圆柱齿轮闭式温锻模具结构数值模拟优化分析[J]. 热加工工艺,2016,45(3): 117-120.

Sun Z L, Li Z H, You S, et al. Optimization analysis of numerical simulation of warm closed forging die structure for cylindrical gears [J]. Hot Working Technology, 2016, 45(3): 117-120.

[5]李振红,姚松,袁皓,等. 圆柱齿轮半闭式温锻成形工艺数值模拟分析[J]. 煤矿机械，2014，35(11): 149-151.

Li Z H, Yao S, Yuan H, et al. Numerical simulation research on semiclosed die warm forging process of spur gear [J]. Coal Mine Machinery，2014，35(11): 149-151.

[6]晏爽,李普,潘秀秀,等.精密锻造成形技术的应用及其发展[J].热加工工艺,2013,42(15):9-12.

Yan S, Li P, Pan X X, et al. Application and development of precision forging forming technology[J].Hot Working Technology,2013, 42(15):9-12.

[7]骆静,尹小燕.精密温锻成形技术在汽车零件中的应用[J].模具技术,2018, (4):32-36.

Luo J, Yin X Y. Application of precision warm forging technology in auto parts[J].Die and Mould Technology, 2018, (4):32-36.

[8]丁川,张志刚.汽车差速器锥齿轮精锻成形工艺及模具的改进[J].辽宁工业大学学报：自然科学版,2016, 36(5): 313-315.

Ding C, Zhang Z G. Improvement of precision forging process and mold for vehicles′ differential gear[J]. Journal of Liaoning Institute of Technology: Natural Science Edition, 2016, 36(5): 313-315.

[9]王明昊,易威威. 精密锻造在汽车工业中的应用[J]. 金属加工:热加工,2010, (5): 27-30.

Wang M H, Yi W W. Application of precision forging in the automotive industry [J]. MW Metal Forming, 2010, (5):27-30.

[10]刘丹丹.直齿锥齿轮等温锻造工艺数值模拟及精度控制研究[D] .山东:山东大学, 2016.

Liu D D. Research on Isothermal Forging Numerical Simulation and Precision for Bevel Gear[D]. Shandong: Shandong University, 2016.

[11]吴先洋.基于响应面法的整体式结合齿齿轮温锻工艺优化[J]. 锻压技术, 2018, 43(8):27-34.

Wu X Y. Optimization on warm forging process for monoblock combined tooth gear based on response surface method[J]. Forging & Stamping Technology, 2018, 43(8):27-34.

[12]樊晨辉,黄萌阳,曹伟. 大锥角圆锥滚子轴承外圈锻造工艺改进[J].轴承, 2019, (3): 20-21.

Fan C H, Huang M Y, Cao W. Improvement on forging process for outer rings of tapered roller bearings with large cone angle[J]. Bearing, 2019, (3): 20-21.

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