Transactions of Materials and Heat Treatment

Title：Precision shaping method for internal spline of sun gear

Authors： Feng Wenjie Li Dong Zhou Feng Chen Yingying Liu Zuofa

Unit： Chongqing University of Technology

KeyWords： sun gear internal spline cold extrusion cold shaping shaping amount effective stress

ClassificationCode：TG376

year,vol(issue):pagenumber：2020,45(6):86-92

Abstract：

For the problem of poor precision for internal spline of sun gear in a truck wheel reducer in the cold extrusion process, the technological scheme of cold shaping for gear was proposed, and the finite element model of cold shaping process for sun gear was established. Then, the forming process was simulated by finite element software Deform-3D, and the influence laws of different shapes of internal spline blanks and precision shaping amounts of external teeth on the difference between M values of the upper and lower ends for the internal spline of sun gear were obtained. The numerical simulation results show that the internal spline precision is improved by choosing the appropriate process parameters in the cold shaping process, and the cold shaping process of sun gear is verified by test. Furthermore, the test results show that the difference between M values of the upper and lower ends for the internal spline effectively reduces by taking the interference spline blanks and the precision shaping amount of 0.2 mm for externd teeth to improve the precision of the internal spline for sun gear, which is consistent with the simulation results. Thus, the precision shaping method has certain reference value for the manufacture of similar parts.

Funds：

重庆市科委资助项目(cstc2014yykfA60001)；重庆市教委科学技术研究资助项目(KJ1400944)

冯文杰(1964－)，男，硕士，教授 E-mail：wjfeng@cqut.edu.cn 通讯作者：周凤（1994-），女，硕士研究生 E-mail：1129471156@qq.com

Reference：

［1］洪慎章. 冷挤压实用技术
［M］. 北京: 机械工业出版社, 2014.

Hong S Z. Practical Technology of Cold Extrusion
［M］.Beijing：China Machine Press, 2014.

［2］Jeong M S, Lee S K, Yun J H. Green manufacturing process for helical pinion gear using cold extrusion process
［J］. International Journal of Precision Engineering and Manufacturing, 2013, 14(6): 1007-1011.

［3］Jia L R, Xiao X C, Chun Y Z, et al. Simulation of cold extrusion process of hollow pieces
［J］. Applied Mechanics and Materials, 2014, 2799(446): 270-274.

［4］张磊磊. 重型汽车轮边减速器太阳轮冷挤压技术研
［D］. 重庆: 重庆理工大学, 2017.

Zhang L L. Research on Cold Extrusion Technology of Sun Gear for Truck Wheel-side Reducer
［D］.Chongqing：Chongqing University of Technology, 2017.

［5］周瑞, 陈文琳, 李亨, 等. 基于弹性变形行为的冷精整直齿轮尺寸预测
［J］. 塑性工程学报, 2013, 20(5): 27-32.

Zhou R, Chen W L, Li H, et al.Dimension prediction of spur gear in cold precision sizing based on elastic deformation behavior
［J］. Journal of Plasticity Engineering,2013,20(5):27-32.

［6］Stone E R H, Cai J, Hu Z M, et al. An exercise in cold ironing as the post-forging operation for net-shape manufacture
［J］. Journal of Materials Processing Technology, 2003, 135(2-3):278-283.

［7］梁强, 周杰, 朱姗姗, 等. 冷整形对大模数直齿轮精度的影响
［J］. 中南大学学报：自然科学版, 2017, 48(2): 310-315.

Liang Q, Zhou J, Zhu S S, et al. Influence of gear accuracy in cold precision sizing for spur gear with big modulus
［J］. Journal of Central South University: Science and Technology,2017, 48(2): 310-315.

［8］韩豫. 直齿内齿轮冷精锻成形工艺分析及实验研究
［D］. 合肥：合肥工业大学, 2009.

Han Y. Process Analysis and Experiment Study on Cold Precision Forging of Straight Inner Gear
［D］. Hefei: Hefei Institute of Technology, 2009.

［9］康关军, 李高峰, 乔博, 等. 铝合金内花键精密冷挤压工艺研究
［J］. 热加工工艺, 2009, 38(7): 145-146.

Kang G J, Li G F, Qiao B, et al. Reserch on precision cold extruding technology for aluminum alloy internal spline
［J］. Hot Working Technology, 2009, 38(7): 145-146.

［10］冯文杰, 况智允, 陈莹莹, 等. 齿轮空心坯正挤压工艺参数对精度的影响规律研究
［J］. 重庆理工大学学报：自然科学, 2018, 32(3): 62-67.

Feng W J，Kuang Z Y, Chen Y Y，et al.Influence law research of forward extrusion process parameters on concentricity of gear hollow billet
［J］. Journal of Chongqing University of Technology: Natural Science, 2018, 32(3): 62-67.

［11］付森涛. 载重汽车用齿轮冷挤压成形精度研究
［D］. 重庆: 重庆理工大学, 2016.

Fu S T.Research on Cold Extrusion Forming Precision of Truck Gear
［D］. Chongqing：Chongqing University of Technology,2016.

［12］刘万利, 吕敬杰,韩江. 关于跨球距检具校对规M值的测量方法
［J］. 汽车实用技术,2018，(13):157-158.

Liu W L, Lyu J J, Han J. A measurement method for calibrating gauge′s M of cross-ball distance submit
［J］. Automobile Applied Technology, 2018，(13):157-158.

［13］周凤，冯文杰，李栋，等. 冷挤压直齿圆柱齿轮二级整形方法
［J］. 锻压技术，2019,44(12):49-55.

Zhou F, Feng W J, Li D, et al. Two-stage shaping method for cold extruded straight spur gear
［J］. Forging ＆ Stamping Technology. 2019,44(12):49-55.

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