锻压技术

重卡用直齿圆柱齿轮冷挤压工艺方案设计

英文标题：Design of cold extrusion process for straight spur gear of camion

作者：张晓旭杜子学

分类号：TG376

出版年,卷(期):页码：2018,43(4):83-88

摘要：

针对重卡用直齿圆柱齿轮采用冷挤压工艺成形外齿-内花键所存在的成形质量差和成形载荷高的问题，设计了3种冷挤压成形的工艺方案，分别为两步成形、分时成形和同时成形，运用有限元分析软件对3种成形工艺方案进行模拟仿真，并以成形质量和成形载荷作为分析比较的评判依据。模拟结果表明：直齿圆柱齿轮可以通过一步冷挤压成形外齿与内花键；采用同时成形工艺方案增加了背压力，提高了外齿与内花键的径向充填能力，从而改善了外齿齿顶塌角和内花键外扩的缺陷；采用同时成形工艺方案，减小了后续机械加工余量，并且提高了生产效率和材料利用率。因此，同时成形工艺方案适合直齿圆柱齿轮外齿-内花键的冷挤压成形。

For the problems of poor forming quality and high forming load in the cold extrusion process of external gear and internal spline for straight spur gear of camion, three kinds of cold extrusion schemes were put forward by two-step forming, time-sharing forming and synchronous forming. Then, the three kinds of forming process schemes were simulated by the finite element analysis software, and the forming quality and forming load were used as the basis for analysis and comparison. The numerical simulation results show that the straight spur gear can be extruded to form the external gear and internal spline by one-step forming, and the synchronous forming increases the back pressure to improve the radial filling capacity of external gear and internal spline and avoid some defects of collapse on the tooth top of external gear and external expansion of internal spline. Meanwhile, the allowance of subsequent machining is reduced, and the production efficiency and material utilization ratio are improved by the synchronous forming. Therefore, the synchronous forming is suitable for the cold extrusion of external gear and internal spline for straight spur gear.

基金项目：

国家科技支撑计划项目（2013BAG06B01）

张晓旭（1982-），女，硕士，讲师；E-mail：775837114@qq.com

参考文献：

[1]朱小星, 朱英, 王双双, 等. 大模数直齿轮热轧成形仿真与实验[J]. 机械设计与制造, 2015, (7): 67-69.

Zhu X X, Zhu Y, Wang S S, et al. Numerical simulation and experiment of hot roll forming large module spur gear [J]. Machinery Design & Manufacture, 2015, (7): 67-69.

[2]谭险峰, 刘霞, 熊洪淼, 等. 圆柱直齿轮精锻成形工艺仿真及试验[J]. 塑性工程学报, 2010, 17(1): 22-26.

Tan X F, Liu X, Xiong H M, et al. Simulation and experimental research on the precision forging of spur gear [J]. Journal of Plasticity Engineering, 2010, 17(1):22-26.

[3]谭险峰,谢保华,刘霞. 基于浮动凹模和约束分流的直齿轮精锻试验与数值模拟[J]. 塑性工程学报, 2016, 23(1):7-10.

Tan X F, Xie B H, Liu X. Experiment and numerical simulation precision forging for spur gear based on floating die and restrained split-flow [J]. Journal of Plasticity Engineering, 2016, 23(1): 7-10.

[4]康权, 邓强, 李志远,等. 内外花键轴向冷挤压成形工艺[J]. 模具制造, 2015, 15(7): 62-65.

Kang Q, Deng Q, Li Z Y, et al. The axial cold extruding forming process for the internal and external spline [J]. Die ＆ Mound Manufacture, 2015, 15(7): 62-65.

[5]李亮, 王平, 陈爱华. 外凸台内齿圈精密成型有限元数值模拟[J]. 机械设计与制造, 2011, (7): 83-85.

Li L, Wang P, Chen A H. Numerical simulation for precision forming of annular gear of external boss of auto′s starter [J]. Machinery Design & Manufacture, 2011, (7): 83-85.

[6]王平, 练毅, 刘德仿,等. 基于DEFORM-3D的外凸台内齿圈件正交试验法工艺优化研究[J]. 机械设计与制造, 2011, (4): 127-129.

Wang P, Lian Y, Liu D F, et al. Research on the parameters optimization for external boss and ring gear by orthogonal experimental method [J]. Machinery Design & Manufacture, 2011, (4): 127-129.

[7]李亮, 王平, 陈爱华. 外凸台内齿圈件冷挤压工艺参数分析及凸模磨损模拟[J]. 热加工工艺, 2011, 40(19): 85-88.

Li L, Wang P, Chen A H. Analysis on cold extrusion process parameters of gear with external boss and its numerical simulation of die wear [J]. Hot Working Technology, 2011, 40(19): 85-88.

[8]冯文杰, 张磊磊, 夏泽雨, 等. 太阳轮内外齿冷挤压成形工艺方案研究[J]. 锻压技术, 2016, 41(12): 72-76.

Feng W J, Zhang L L, Xia Z Y, et al. Research on cold extrusion process for sun gear with internal-external tooth [J]. Forging & Stamping Technology, 2016, 41(12): 72-76.

[9]曹金豆. 直齿圆柱齿轮连续冷挤压工艺及模具技术研究[D]. 重庆: 重庆大学, 2016.

Cao J D. Cold Extrusion Process and Die Design for Spur Gear of Camion [D]. Chongqing: Chongqing University, 2016.

[10]蔡丹云, 丁明明, 陈磊. 驱动齿轮冷挤压成形研究[J]. 锻压技术, 2015, 40(6):55-59.

Cai D Y, Ding M M, Chen L. Investigation on cold extrusion of drive gear [J]. Forging & Stamping Technology, 2015, 40(6): 55-59.

服务与反馈：

【文章下载】【加入收藏】