铜管游动芯头拉拔参数的优化

来源期刊：中南大学学报(自然科学版)1997年第6期

论文作者：陈庭飞 彭大暑

文章页码：61 - 64

关键词：铜管; 拉拔; 游动芯头; 上限法

Key words：copper tube; drawing; floating plug; upper bound technique

摘    要：采用极值原理对小铜管游动芯头拉拔参 数的优化进行了理论分析和实验研究.研究结果表明,优化计算结果与实验值非常接近,最优拉拔模角和芯头锥角与拉拔变形量和摩擦等有关,而且一般比大规格铜 管游动芯头拉拔模角和芯头锥角略高些.这对于我国精密小铜管游动芯头拉拔参数的选择有着一定的参考价值.

Abstract: In this paper,the technique of drawing the small copper tube with a floating plug was studied theoretically and experimentally.The upper bound technique(UBT) has been used to investigate the relation between various parameters in tube drawing with a floating plug.The results are showed as follows:(1)The established UBT pattern is reliable.The calculated values approximate to the experimental values.(2)The optiumu die angle(α)and cone angle(β)of the plug are affected by area reduction,friction factor and so on.(3) Compared with conventional copper tube drawing with a floating plug,when drawing small copper tube,the values of α,β and (α-β)should be hither.