摘要:
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考虑材料加工硬化的影响,本文通过对圆筒件及带凸缘的圆筒件首次拉深过程中变形区材料的应力和应变的理论分析,推导出圆筒件及带凸缘圆筒件首次拉深时极限拉深系数的近似计算公式。由推导公式计算的结果与实验值相比误差较小。在实际拉深此类零件时,可由推导的公式直接计算出圆筒件及带凸缘圆筒件首次拉深时极限拉深系数。
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Taking the consideration of the effect of material hardening,this paper deduces the approximately calculating formula of the limit drawing coefficient for a cup and a cup with flange during the first drawing process through the theoretical analysis of the stress and strain in the distortion zone.The calculated result by the deduced formula is in good agreement with experiment results of varied materials.In the real drawing process,the limit drawing coefficient during the first drawing process can be calculated by the formula.
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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]胡世光.板料冷压成形原理[M].北京:国防工业出版社,1989.
[2]王孝培.冲压手册(第二版).北京:机械工业出版社,1990.
[3]翟平.飞机钣金成形原理与工艺.西安:西北工业大学出版社,1995.
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