Transactions of Materials and Heat Treatment

Title：Continuous stretch bending equipment of one-dimensional linear reel-type stretch rod for aerospace

Authors： Li Zhanhua Han Jingtao Zhang Yufeng Lu Ruilong

Unit： Shijiazhuang Tiedao University University of Science and Technology Beijing

KeyWords： stretch rod device stacer continuous stretch bending constant tension control uncoiling system coiling system

ClassificationCode：TG386

year,vol(issue):pagenumber：2022,47(10):208-215

Abstract：

For the reel-type stretch rod, considering the difficulty in developing the forming process and equipment due to the highly nonlinear structure of stacer, based on analyzing the continuous stretch bending process of reel-type stretch rod by numerical simulation, the function and structure of forming equipment were studied, and the difficult problems such as die structure design and constant tension control in the manufacturing of continuous stretch bending equipment were solved. Then, a constant tension control model of steel strip without tension roller was proposed which could be used in actual production. Application test results show that the post tension fluctuation amplitude is less than 4% and the front tension fluctuation amplitude is less than 3%, which simplifies the equipment structure, avoids the influence of tension roller on the forming accuracy, and realizes the effect of stable control. The development of continuous stretch bending equipment for the reel-type stretch rod is completed, and the stacer with the length of 6 m is successfully obtained by the developed equipment. The straightness deviation of the part is less than 5 mm, and the stacer workpieces for flight application are obtained. Thus, the research is of certain significance to improve the own stacer mass production capacity in our country.

Funds：

河北省高等学校科学技术研究项目(QN2019192，QN2021231)；河北省自然科学基金面上项目(E2021210116)

李占华（1983-），男，博士，讲师，硕士生导师，E-mail：Lizhanhua78@163.com

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