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基于Matlab的芯轴最小弯曲半径计算
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英文标题：Mathematic calculation approach of minimum bending radius of mandrel based on Matlab |
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作者：刘婧瑶 唐承统 宁汝新 |
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单位：北京理工大学机械与车辆工程学院 |
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关键词：芯轴 最小弯曲半径 Matlab 碰撞干涉 |
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分类号：TH133.2 |
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出版年,卷(期):页码：2009,34(1):143-146 |
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摘要：
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在薄壁管有芯NC绕弯成形过程中,若弯曲半径过小则芯轴块间易发生碰撞干涉,而最小半径受限于芯轴连接方式和结构参数。通过分析常用芯轴结构特点和发生芯轴块碰撞干涉的位置,关于芯轴直径、球头节个数、球头节间距和芯轴块厚度建立了芯轴最小弯曲半径的解析模型。并采用Matlab工具求解方程得到芯轴的最小弯曲半径,为芯轴的设计和弯曲工艺提供了理论依据。
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In NC rotary-draw bending of thin-wall tube,if the bending radius is small excessively then the collision will happen between mandrel balls,but the minimum bending radius is confined by structure characteristic and joint fashion.According to common structure characteristic of mandrel and the interference and collision position of mandrel ball,the analysis-model of minimum bending radius was established in terms of the mandrel-structure parameters and the analysis of mandrel movement.And Matlab was adopted to solve the complex equation to find the minimum bending radius.It provides the basic theory for mandrel design.
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基金项目：
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国防基础科研项目(B2220060048)
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作者简介：
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参考文献：
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[1]阮润凌.弯管模胎建模与仿真技术研究[D].北京:北京理工大学,2006.
[2]Gu R J,Yang H,Zhan M,et al.Effect of mandrel on crosssection quality of thin-walled tube numerical controlled bending[J].Transactions of Nonferrous Metals Society of China,2005,15(6):1264-1274.
[3]Paulsen F,Welo T.Cross-sectional deformations of rectangu-lar hollowsections in bending:partⅠ-experi ments[J].Interna-tional Journal of Mechanical Sciences,2001,43(1):109-129.
[4]许杰.薄壁管数控弯曲精确成形过程参数优化研究[D].西安:西北工业大学,2006.
[5]张德丰.Matlab数值分析与应用[M].北京:国防工业出版社,2007.
[6]John H Mathews,Kurtis D Fink.Numerical Methods UsingMATLAB[M].北京:电子工业出版社,2005.
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