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摘要：
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在大型CAD软件Pro/E中建立了汽车车轴制动毂挡尘盖拉深成形的凸凹模模型,运用大型商用有限元软件MSC.Marc,对其拉深成形过程进行了数值模拟。分析金属材料在拉深时的流动情况及挡尘盖在拉深后的应力应变分布规律,重点研究了压边力和凸凹模间隙对板材成形性能的影响,分析了起皱和破裂产生的原因、特点、影响因素以及预防措施等。模拟及试验结果表明,工件在拉深时,凸缘部分材料易产生失稳起皱现象;凸、凹模之间的间隙是影响盒形部分产生破裂的主要原因。当刚性压边圈与凹模之间的间隙减小到1.2倍的料厚时,能获得表面质量光滑的合格件;当凸凹模及浮动凸凹模之间的间隙大于料厚时,能确保拉深过程顺利进行。
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The models of the punch and die for the deep drawing process of the dust cover used in automotive axle breaking hub was established by CAD software,Pro/E,and then the deep drawing process was carried out by the FEA software,MSC.Marc.The metal flowing during drawing and the distributions of the stress and strain after drawing were studied,the effect of the blank holdering force and the clearance between the punch and die on the forming property were mainly investigated.The reasons,characteristics,influence factors and prevention measures of the fracture and wrinkle were analyzed.Both the simulation and experiment results show that,wrinkle occurs easily in the flange region,and the clearance between the punch and die is the main factor to influence the fracture.When the clearance between the rigid blank holder and die is less than 1.2 times of blank thickness,the workpiece with smooth surface quality can be obtained;when the clearance between the punch-die and the floating punch-die is greater than the blank thickness,the deep drawing process would be proceeded successfully.
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基金项目：
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作者简介：
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参考文献：
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[1]李玉萍.CAD/CAM集成技术在冲压模具生产中的应用[J].锻压装备与制造技术,2003,38(5):66 68.
[2]梁清香,张根全.有限元与Marc实现[M].北京:机械工业出版社,2003.
[3]马?.IF板与08Al板的成形性能研究[J].山东冶金,2003,25(6):49 51.
[4]夏琴香.冲压成形工艺及模具设计[M].广州:华南理工大学出版社,2004.
[5]程秀全,夏琴香.汽车车轴制动毂挡尘盖冲压成形工艺与模具设计[J].锻压技术.2005,30(6):23 26.
[6]卢险峰.冲压工艺模具学[M].北京:机械工业出版社,2006.
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