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摘要：
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成形力大小是决定花键轴开式冷挤压成形工艺成败的关键因素。借助刚塑性有限元软件Deform-3D,采用数值模拟的方法分析了矩形花键轴冷挤压过程中,坯料直径、凹模入模半角及键齿尺寸对花键成形力的影响。模拟计算表明,随着坯料直径的增加以及入模半角的增大会引起成形力显著提高;此外,键齿高度的增加及宽度的减小也会引起成形力增加。工艺实验表明,数值模拟的结果对实际生产可起到指导作用。
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The forming force is the key factor in open-type cold extrusion process.Based on the method of numerical simulation,the diameter of steel billet,entrance half angle of concave die and the dimension of spline were analyzed for the forming force on the spline processing with the help of a rigid-plasticity finite element software Deform-3D.The simulation results show that the forming force will be increased markedly by increasing the diameter of steel billet and the entrance half angle.In addition,the forming force will be increased by raising or narrowing the spline.The processing tests show that the result of numerical simulation will be the guidance of production practice.
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基金项目：
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重庆市科委攻关项目(CSTC,2005AC3033)
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作者简介：
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参考文献：
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[1]俞汉清,陈金德.金属塑性成形原理[M].北京:机械工业出版社,1999.
[2]彭大暑.金属塑性加工力学[M].长沙:中南工业大学出版社,1986.
[3]Guo Jinji,Zhao Sheng,Xing Haoxu,et al.Aslip-line methodfor calculating extrusion force of steel hel met with cold extru-sion moulding[J].Journal of Systems Engineering and Elec-tronics,1999,10(2):75-81.
[4]Hae Yong Cho,Gyu Sik Min,Chang Yong Jo,et al.Processdesign of the cold forging of a billet by forward and backwardextrusion[J].Journal of Materials Processing Technology,2003,135(4):375-381.
[5]Zhang Zhenchun,Li Jun,Zhou Lihua et al.Experi mentalstudy on open-die cold extrusion forming technique for involutespline shaft[J].Chineses Journal of Mechanical Engineering(English Edition),1996,9(1):6-12.
[6]孟凡中.弹塑性有限变形理论和有限元方法[M].北京:清华大学出版社,1985.
[7]冯文杰,陈莹莹,米林,等.矩形花键冷挤压的数值模拟分析[J].现代制造工程,2007,(2):111-113.
[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.
[9]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.
[10]李传民,王向丽,闫华军,等.DEFORM5.03金属成形有限元分析实例指导教程[M].北京:机械工业出版社,2007.
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