Transactions of Materials and Heat Treatment

Title：Experimental study on curved surface roll-bending

Authors：

Unit：

KeyWords： roll-bending curved surface measure forming precision surface smoothness thickness

ClassificationCode：TG306

year,vol(issue):pagenumber：2021,46(6):99-105

Abstract：

In order to meet the market demand for effectively manufacturing of single piece or small batches of personalized, diversified and large-scale sheet metal parts with three-dimensional curved surface, a new flexible forming technology, namely, curved surface roll-bending technology was developed, which used an upper flexible roll and two lower flexible rolls as forming tools and adjusted the axis shape of flexible roll in the vertical direction. The sheet metal parts were bent in both longitudinal and transverse directions simultaneously by the rotation of flexible rolls to realize continuous forming. Then, the principle and experimental device of curved surface roll-bending process were introduced, and the forming experiments of typical hyperboloid parts such as saddle part and convex part were conducted. Furthermore, the experiment results were measured and analyzed by a binocular stereo vision measurement system, and the change laws for forming accuracy, smoothness and thickness of formed curved surface parts were analyzed. The results show that the formed curved surface part has good precision, and the formed curved surface is in good agreement with the required curved surface shape to provide a certain reference for the development and design of curved surface roll-forming process.

Funds：

国家自然科学基金资助项目（51075186）；国家863计划项目（2009AA04Z117）

兰英武(1983-)，男，硕士，助理工程师 E-mail：lanyingwu2005@163.com

Reference：

[1]Gong X P, Li M Z, Hu Z Q, et al. Research on continuous multi-point forming technology for three-dimensional sheet metal[J]. International Journal of Materials & Product Technology, 2010, 38(2-3): 210-222.

[2]周晗琼, 武凯, 孙宇,等.四辊卷板成形过程中宽度效应的影响规律[J].锻压技术, 2019,44(11):43-50.

Zhou H Q, Wu K, Sun Y, et al. Influence law of width effect in forming process of four-roller bending plate[J]. Forging & Stamping Technology, 2019,44(11):43-50.

[3]Qu E H, Li M Z, Li R.Investigation of forming accuracy in mul-tipoint forming with composite elastic pads[J]. The International Journal of Advanced Manufacturing Technology, 2019, 105(10):4401-4413.

[4]Cai Z Y, Lan Y W, Li M Z, et al. Continuous sheet metal forming for doubly curved surface parts[J].International Journal of Precision Engineering and Manufacturing, 2012,13(11):1997-2003.

[5]Sui Z, Cai Z Y, Lan Y W, et al. Simulation and software design of continuous flexible roll bending process for three dimensional surface parts[J].Materials & Design, 2014,54(11):498-506.

[6]龚学鹏，李明哲，胡志清.使用可弯曲辊的三维曲面卷板成形过程数值模拟[J].吉林大学学报:工学版，2008，38(6)：1310-1314.

Gong X P, Li M Z, Hu Z Q. Numerical simulation of three-dimensional surface bending by using bendable roller[J].Journal of Jilin University:Engineering and Technology Edition,2008,38(6):1310-1314.

[7]Cai Z Y, Sui Z, Cai F X, et al. Continuous flexible roll forming for three-dimensional surface part and the forming process control[J].International Journal of Advanced Manufacturing Technology, 2013, 66(1-4): 393-400.

[8]胡志清.连续多点成形方法、装置及成形实验研究[D].长春:吉林大学,2008.

Hu Z Q.Research on Continuous Multi-point Forming Method Equipment and Experiment[D].Changchun: Jilin university,2008.

[9]Cai Z Y, Li M Z, Lan Y W. Three-dimensional sheet metal continuous forming process based on flexible roll bending: Principle and experiments[J].Journal of Materials Processing Technology, 2012,212:120-127.

[10]兰英武.曲面辊弯成形过程的数值模拟与实验研究[D].长春:吉林大学, 2019.

Lan Y W. Numerical Simulation Analysis and Experimental Research on Roll Bending Forming Process of Three-Dimensional Surface [D].Changchun: Jilin University, 2019.

[11]Yoon S J, Yang D Y. Investigation into a new incremental forming process using an adjustable punch set for the manufacture of a doubly curved sheet metal[J].Proceedings of the Institution of Mechanical Engineers, 2001,215: 991-1004.

[12]Yoon S J, Yang D Y. Development of a highly flexible incremental roll forming process for the manufacture of a doubly curved sheet metal[J].CIRP Annals-Manufacturing Technology, 2003, 52(1): 201-204.

Service：

【This site has not yet opened Download Service】【Add Favorite】