锻压技术

渐开线花键冷挤成形工艺分析与模具设计

英文标题：Analysis on cold extrusion molding process and mold design of involute spline

作者：林桂霞

单位：苏州经贸职业技术学院

分类号：

出版年,卷(期):页码：2014,39(1):104-109

摘要：

以某轻型汽车半轴渐开线花键为研究对象，利用有限元软件Deform-3D，采用数值模拟的方法，探讨了坯料直径、凹模引导区长度及定径带长度对花键冷挤压成形的影响规律。分析结果表明，随坯料直径增加，成形力上升，齿形成形效果显著提高，但坯料直径过大，回弹现象影响齿形精度；引导区长度对花键冷挤成形性有影响，若引导长度设计太短，挤压过程不稳定或不能成形；定径带长度对花键的成形质量和成形力影响显著，随定径带长度增加，齿形越饱满，齿槽越深，挤压力越大。优化设计了冷挤花键组合式凹模的关键参数，工艺试验表明，分析准确，设计合理。

Based on the method of numerical simulation, the diameter of steel billet, the effect of the lead length and the calibrating strap length of concave die were discussed on the involute spline cold extrusion forming with the help of a finite element software Deform-3D. The simulation results show that the forming force and the too th profile are increased by increasing the diameter of steel billet, while the profile precision of tooth is influenced by springback when diameter is too big. The lead length has effects on the cold extrusion formability, and the extrusion process will be unstable or can not be formed if the lead length is too short. There is a significant effect for calibrating strap length on forming quality and forming force of spline. The tooth is fuller, the tooh space is deeper and the forming force is increased with the increase of calibrating strap length of concave die. Then a set of multi-layer composite concave die was optimized by finite element analysis for spline cold extrusion. The processing tests show that analysis is accurate, and die design is feasible.

基金项目：

苏州经贸职业技术学院自然项目（JMYZ1102）

林桂霞（1980-），女，硕士，讲师

参考文献：

[1]徐虹, 贾树盛, 白凤梅,等. 基于数值模拟的渐开线花键件冷挤压工艺参数优化[J]. 塑性工程学报, 2005, 12(6): 7-10.

Xu Hong, Jia Shusheng, Bai Fengmei, et al. Optimization of process parameters of cold extrusion for involute spline part based on numerical simulation[J]. Journal of Plasticity Engineering, 2005, 12(6): 7-10.

[2]黄朝晖, 付沛福, 黄良驹,等. 花键轴开模冷挤压中局部镦粗问题的研究[J]. 塑性工程学报, 1999, 6(3): 12-17.

Huang Zhaohui, Fu Peifu, Huang Liangju, et al.Study on the bulging problem in open-die cold extrusion for spline shaft [J]. Journal of Plasticity Engineering, 1999, 6(3): 12-17.

[3]陈莹莹, 辜志勇, 梁强. 影响花键轴冷挤压弯曲变形的工艺参数优化[J]. 锻压技术, 2012, 37(4): 60-62.

Chen Yingying, Gu Zhiyong, Liang Qiang. Process parameters optimization of bending deformation for spline shaft in cold extrusion[J]. Forging & Stamping Technology, 2012，37(4): 60-62.

[4]王明福, 付建华，刘志奇，等. 花键冷滚压成形过程有限元分析[J]. 锻压技术, 2010, 35(4): 155-159.

Wang Mingfu, Fu Jianhua, Liu Zhiqi，et al. Finite element analysis of spline cold roll forming process [J]. Forging & Stamping Technology, 2010，35(4):155-159.

[5]黄朝晖, 付沛福, 张猛. 花键轴冷挤压成形后的三维光塑性模拟研究[J]. 实验力学, 1999, 14(1): 35-39.

Huang Zhaohui, Fu Peifu, Zhang Meng. Three-dimensional photoplastic study on the deformation of a spline shaft in cold extrusion[J]. Journal of Experimental Mechanics, 1999, 14(1): 35-39.

[6]贾俐俐, 高锦张. 长轴类花键挤压成形极限研究[J].中国机械工程,2002, 13(22): 1974-1977.

Jia Lili, Gao Jinzhang. Study on extrusion forming limits of long splines[J]. China Mechanical Engineering, 2002, 13(22): 1974-1977.

[7]冯文杰, 陈莹莹，陈碧楠，等. 矩形花键轴开式冷挤压成形力的数值模拟研究[J]. 锻压技术, 2008, 33(1): 66-68.

Feng Wenjie, Chen Yingying, Chen Binan，et al. Forming force numerical simulation of open type cold extrusion for rectangle spline shaft [J]. Forging & Stamping Technology, 2008, 33(1): 66-68.

[8]何晓辉. 矩形花键冷挤压工艺研究及组合凹模的优化设计[D] . 南京：东南大学, 2004.

He Xiaohui. Research on Rectangle Spline Cold Extrusion Process and Optimizing Design of Multi-layer Composite Concave Die[D].Nanjing: Southeast University, 2004.

[9]李淑玉, 田福祥. 花键套冷挤压模具设计[J]. 锻压技术, 2011, 36(3): 104-105.

Li Shuyu, Tian Fuxiang. Design of spline sheath cold extrusion die[J]. Forging & Stamping Technology, 2011，36(3):104-105.

服务与反馈：

【文章下载】【加入收藏】