锻压技术

矩形花键冷挤压成形工艺参数多目标优化

英文标题：Multi-objective optimization of cold extrusion process parameters for rectangle spline

作者：阴俊霞李兴慧徐伟

单位：四川工程职业技术学院

分类号：TG376

出版年,卷(期):页码：2016,41(12):155-159

摘要：

针对矩形花键冷挤压成形中出现齿形充填不饱满和成形力过大的缺陷问题，以x1（坯料直径）、x2（坯料初始倒角）、x3（入模半角）为优化变量，采用响应面法结合有限元数值模拟对花键冷挤压成形工艺参数进行多目标优化。根据实验设计结果分别建立了两个目标函数的二阶响应面模型，方差分析结果表明，模型预测精度高并能够较好地描述两个目标函数关于设计变量的响应。在优化范围内得到矩形花键轴成形最优工艺参数为：x1=Ф48.5 mm，x2=20°，x3=15°。将优化后的工艺参数进行实际验证，结果表明：前端塌角量降至0.27 mm，最大成形力降至1300 kN。工艺试验证明了采用多目标优化得到的工艺参数可以获得合格的产品。

For the problem of insufficient corner filling and excessive forming loads in the process of cold extrusion for rectangle spline, x1 (diameter of billet), x2 (billetinitial chamfer) and x3(die semi-angle) were selected as optimization variables, and the multi-objective optimization of cold extrusion process parameters was studied by the response surface method (RSM) combining with finite element method (FEM). Then, the second-order response surface models of two objective functions were established based on the experimental design result. The variance analysis results show that the above models are of high prediction accuracy, two objective functions related to response of design variable are described clearly. Thus, the optimal process parameters of forming rectangle spline shaft are obtained as x1=Ф48.5 mm, x2=35° and x3=30°. The optimized process parameters were verified practically. The result shows that the tooth tip collapse angle reduces to 0.27mm and the maximum forming force reduces to 1300 kN. Experimental result shows that the qualified products can be obtained by multi-objective optimal process parameters.

基金项目：

基金项目:四川省教育厅科研项目（16ZB0495）

作者简介：阴俊霞（1983-），女，硕士，讲师 E-mail：yinjunxia02@163.com

参考文献：

［1］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，2008，13（22）：1974-1976.

Jia L L, Gao J Z. Study on extrusion forming limits of long splines
［J］. China Mechanical Engineering, 2008,13(22):1974-1976.

［2］徐波. 大模数花键齿形冷挤压成形的研究
［D］. 江苏：东南大学，2006.

Xu B. Research on Big Modulus Spline Cold Extrusion Process
［D］. Jiangsu：Southeast University, 2006.

［3］向荣. 车用花键齿套精密成形工艺与模具研究
［D］. 重庆：重庆理工大学，2012.

Xiang R. Reserch on Precise Forming Technology and Die for Vehicle Sleeve Gear with Spline
［D］. Chongqing: Chongqing University of Technology, 2012

［4］刘士士，谷正气，伍文广．基于响应面方法的车辆多目标协同优化
［J］．中南大学学报:自然科学版，2012，43(7)：2586-2592．

Liu S S, Gu Z Q, Wu W G. Multi-objective collaborative optimization of vehicle based on response surface methodology
［J］. Journal of Central South University:Science and Technology, 2012, 43(7)：2586-2592．

［5］孙英达，徐文琴. 大模数矩形花键冷挤压成形质量分析
［J］. 兵器材料科学与工程，2015，38(4)：38-42.

Sun Y D, Xu W Q. Quality analysis on cold extrusion forming of big modulus rectangle spline
［J］. Ordnace Material Science and Engineering,2015, 38(4)：38-42.

［6］Palanivel R, Koshy Mathews P. Prediction and optimization of process parameter of friction stir welded AA5083-H111 alumingum alloy using response surface methodology
［J］.Journal of Central South University of Technology:English edition，2012,19:1-8.

［7］杨艳慧，刘东，贺子廷，等. 基于响应面法（RSM）的锻造预成形多目标优化设计
［J］. 稀有金属材料与工程，2009,38(6)：1019-1024.

Yang Y H, Liu D, He Z T,et al. Multi-objective preform optimization using RSM
［J］. Rare Metal Materialas and Engineering, 2009, 38(6)：1019-1024.

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