摘要: |
针对航天领域的热控产品中翼型翅片管的精密数控弯曲成形需求,进行了工艺试验研究。本文设计了一种用于翅片翼型管数控弯曲的模具,对翼型翅片管弯管过程中的弯曲回弹、管路长度延伸问题进行了实验分析,并根据实验结果建立数学模型,拟合得到翼型翅片管精确数控弯曲工艺补偿量计算公式。采用该计算公式对翼型翅片管典型结构进行成形实验,获得较高的成形精度。翼型翅片管成形精度的提高,直接支撑了在一定空间精度约束下设计更长的单根管路,对减少管-管焊装过程中的焊缝数量,提高翼型翅片管使用的可靠性具有积极意义。 |
关键词: 翅片管;矢量弯管;回弹补偿;延伸补偿 |
基金项目:装发共性技术(5092****305) |
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Experimental Study on Vector Bending of Finned Tubes |
Zhao Yue Bian Honglu Xu Aijun Hao Xiaoming Hou Zhen Chen Xu Zhang Kaihu
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Beijing Spacecrafts, Beijing 100092
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Abstract: |
Conduct process experimental research on the precision vector bending requirements of finned tubes in aerospace thermal control products. This paper designs a mold for CNC bending of finned tubes, and conducts experimental analysis on issues such as springback compensation and extension compensation during the forming process of finned tubes. A mathematical model was established to fit the experiment data, forming a calculation formula for precise bending process compensation of finned tubes. The mathematical model was used for bending experiments on typical structures of finned tubes, and high forming accuracy was achieved. The improvement of the forming accuracy of finned tubes directly supports the design of longer single tube for thermal control products under certain spatial constraints, which has a positive significance in reducing the number of weld seams and improving product reliability. |
Key words: finned tubes;vector bending;springback compensation;extension compensation |