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U型件回弹控制模具补偿法的研究
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英文标题：Research on die compensation method based on spring-back control of U-shaped part |
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作者：杨雪春 董懿琼 彭伟 王海彬 |
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单位：南昌大学机电工程学院 |
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关键词：U型件 回弹 模具补偿 |
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分类号：TG386 |
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出版年,卷(期):页码：2009,34(1):42-46 |
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摘要：
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回弹是板料冲压成形过程中一种常见但不易解决的问题,在U型件成形中回弹更加明显。模具补偿法是实际生产中常用的控制U型弯曲件回弹的方法,该方法的使用目前仅仅停留在经验的层次上,很少有文章从理论上对该方法做出阐述。根据回弹理论推导U型件弯曲时,模具补偿半径R1与弯曲凸模圆角半径R0′的计算公式,并设计了相应的补偿模具对公式进行实验验证。实验结果表明,计算公式具有较好的精度,按计算公式对模具参数进行取值可以有效地控制回弹,对实际生产具有一定的借鉴作用。
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The spring-back in sheet metal forming is a common phenomenon but difficult to be solved,especially in the U-shaped part.Die compensation method is commonly used in the control of U-shaped bending part in production by experience,and few articles were written from its theories.The algorithm of die compensation radius R1 with bending punch fillet radius R′0 was educed according to the spring-back theory about the U-shaped part.The algorithm was validated by experiments of compensation die.The results show that the algorithm has a good precision and it can better control the spring-back according to the algorithm values for the die parameters which can be used for reference in production.
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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]蔡学瑜.U形件板料自由弯曲回弹角计算数学模型的研究[J].模具设计,34(9):58-60.
[2]林忠钦,刘罡,李淑慧.应用正交试验设计提高U形件的成形精度[J].机械工程学报,2002,38(3):83-89.
[3]Hang Shawn Cheng,Jian Cao,Cedric Xia Z.An acceleratedspringback compensation method[J].International Journalof Mechanical Sciences,2007,(49):267-279.
[4]Lingbeek R,Huetink J,Ohnimus S.The development of afinite elements based springback compensation tool for sheetmetal products[J].Journal of Materials Processing Technol-ogy,2005,(169):115-125.
[5]Woo-Kyun Jung,Beomkeun Kim,Myung-Shik Won.Fabri-cation of radar absorbing structure(RAS)using GFR-nanocomposite and spring-back compensation of hybrid composite RASshells[J].Composite Structures,2006,(75):571-576.
[6]官英平.板料塑性弯曲回弹计算方法[J].模具工业,1999,(5):11-13.
[7]官英平,赵长财,张立玲.板料校正弯曲回弹量计算[J].锻压技术,1998,23(6):18-20.
[8]朱东波,陈剑虹,李涤尘,等.一种板料弯曲及回弹计算的新方法[J].西安交通大学学报,2000,34(5):64-68.
[9]俞汉青,陈金德.金属塑性成型原理[M].北京:机械工业出版社,1999.
[10]肖景容,姜奎华.冲压工艺学[M].北京:机械工业出版社,1990.
[11]李硕本.冲压工艺学[M].北京:机械工业出版社,1983.
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