Transactions of Materials and Heat Treatment

Title：Study on punching slug defect of half shaft bushing and process optimization

Authors： Li Pan Guo Yongqiang Xu Chunguo Xiao Tao

Unit： Beijing Research Institute of Mechanical & Electrical Technology Hubei Yuanxiang Precision Forging Co. Ltd.

KeyWords： half shaft bushing hot extrusion forming punching slug adhesion die

ClassificationCode：TG376.2

year,vol(issue):pagenumber：2016,41(10):77-81

Abstract：

Half shaft bushing is one of the most important parts of automobile axle housing. During the adjustment of the hot extrusion technology of half shaft bushing developed by Beijing Research Institute of Mechanical & Electrical Technology, punching slug adhesion defect appearing in the tube end during punching-extrusion process was analyzed. Then, the cause of the problem was explored, and the main factors were determined as over-thick slug and eccentricity of the punch. The above processes were simulated by Deform-3D software, and the simulation results can perfectly reflect the actual situation. Furthermore, the technology data for punching process were optimized by BP-GA algorithm, and the appropriate thickness of the slug was confirmed. Finally, the qualified half shaft bushing product was produced by optimizing the slug thickness and adjusting the alignment between punches and dies in every process.

Funds：

国家高技术研究发展计划（“863”计划）（2012AA040202）

作者简介：李攀（1987-），男，博士研究生 E-mail：lipanvc@163.com；通讯作者：徐春国（1970-），男，博士，研究员 E-mail：1390082751@163.com

Reference：

[1]张成波.1141重型货车驱动桥桥壳轻量化研究[D].武汉:武汉理工大学,2010.

Zhang C B. Lightweight Optimization Study on 1141 Heavy Truck Driving Axle Housing[D].Wuhan: Wuhan University of Technology, 2010.

[2]Steven W Bradley, Walter L Bradley. Analysis of failure of axle housing of crane truck with fracture mechanics[J]. Engineering Failure Analysis, 1995, 2(4): 233-246.

[3]胡启,金俊松,王新云,等. 阶梯轴多工步缩径挤压成形工艺研究[J].锻压技术, 2014，39(2):68-73.

Hu Q, Jin J S, Wang X Y, et al. Study on multi-step ironing process of multi-diameter shaft [J]. Forging & Stamping Technology, 2014, 39(2): 68-73.

[4]任广升，徐春国. 半轴套管快捷精密挤压成形新工艺[P]. 中国:ZL200410029774.3,2004-11-12.

Ren G S, Xu C G. A new quick precision extrusion forming technology of half shaft bushing[P]. China:ZL200410029774.3, 2004-11-12.

[5]Painter B, Shivpuri R, Altan T. Prediction of die wear during hot-extrusion of engine valves[J]. Journal of Materials, 1996, 59(1):132-143.

[6]史峰，王小川，郁磊，等. MATLAB神经网络30个案例分析[M]. 北京：北京航空航天大学出版社，2010.

Shi F, Wang X C, Yu L, et al. 30 Case Analysis of MATLAB Neural Network[M]. Beijing: Beihang University Press, 2010.

[7]Howard Demuth, Mark Beale. Neural network toolbox for use with MATLAB[J]. Matlab Users Guide the Math Works, 2000, 21(15):1225-1233.

[8]Robert J, Van Eyden. The Application of Neural Networks in the Forecasting of Share Prices[M]. Berlin: Finance and Technology Publishing, 1996.

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