锻压技术

一种橡皮囊成形弯边零件的回弹补偿方法

英文标题：A springback compensation method for rubber bladder forming of flanged parts

作者：张凌云弥晓东黄杰石绍秋

单位：沈阳航空航天大学

分类号：TG386

出版年,卷(期):页码：2021,46(8):49-54

摘要：

在橡皮囊成形后的卸载阶段，由于钣金件内部残余应力的释放必然导致回弹，有时会造成制件几何尺寸超差、甚至报废。针对该问题，提出了采用经验公式法对曲线弯边的半径和弯曲型面进行补偿的算法，克服了有限元模拟位移调整法中多次迭代效率低、回弹补偿精度不高等问题，只需考虑钣金件的材料参数和几何尺寸，并配合二次开发软件即可快速生成曲线弯边零件的模具补偿工作型面。对典型的直弯边零件进行工艺试验验证，结果表明，弯边后零件的回弹角随着成形压力的增加而减小，回弹后零件的圆角半径与角度可控制在允许精度范围之内。

In the unloading stage of rubber bladder forming, the release of internal residual stress for sheet metal parts inevitably leads to springback, sometimes causes the geometric dimension of parts to be out of tolerance or even scrapped. According to the issue above, an empirical formula method was proposed to compensate the radius and curved surface of curved flanging, which overcame the defects of low efficiency of multiple iterations and low precision of springback compensation in the displacement adjustment method of finite element simulation and quickly generated the die compensation working surface of curved flanged parts by considering the material parameters and geometric dimensions of sheet metal parts and combining with the secondary development software. The results of the process test for typical straight flanged parts show that the springback angle of part after bending decreases with the increasing of forming pressure, and the fillet radius and angle of part after springback can be controlled within the allowable precision range.

基金项目：

航空基金项目（2011ZE54013）

张凌云（1963-），男，博士，教授 E-mail：zhangly@163.com 通信作者：弥晓东（1994-），男，硕士研究生 E-mail：823375894@qq.com

参考文献：

［1］Wang C T, Kinzel G, Altan T. Failure and wrinking criteria and mathematical modeling of shrink and stretch flanging operations in sheet-metal forming
［J］. Joumal of Materials Processing Technology，1995，53 (3-4)：759-780.

［2］张凌云, 周帅,孟伟琪,等.基于响应面法橡皮成形侧压块参数优化及验证
［J］.材料科学与工艺,2018,26(1):39-46.

Zhang L Y,Zhou S, Meng W Q, et al. Parameters optimization and validation of rubber forming of side blank holder based on response surface methodology
［J］. Materials Science and Technology,2018,26(1):39-46.

［3］Choi S H, Chin K G. Prediction of springback behavior in high strength low carbon steel sheets
［J］. Joumal of Materials Processing Technology，2006，171（3）：385-392.

［4］Hang S C, Cao J, Xia Z C. An accelerated springback compensation method
［J］. International Journal of Mechanical Sciences, 2007, 49(3):267-279.

［5］Shen H Q, Li S H, Ni X F, et al. A modifed displacement adjustment method to compensate for surface deflections in the automobile exterior panels
［J］. Journal of Materials Processing Technology, 2013, 213(11):1943-1953.

［6］Lingbeek R, Huetink J, Ohnimus S, et al. The development of a finite elements based springback compensation tool for sheet metal products
［J］. Journal of Materials Processing Technology，2005，169：115-125.

［7］Tekiner Z. An experimental study on the examination of springback of sheet metals with several thickness and properties in bending dies
［J］. Journal of Materials Processing Technology，2004，145：109-117.

［8］Chen L, Chen H Q, Guo W G, et al. Experimental and simulation studies of springback in rubber forming using aluminium sheet straight flanging process
［J］. Materials and Design，2014, 54:354-360.

［9］Liu C, Wu H B, Yang Y M, et al. A rapid and itelligent approach to design forming shape model for precise manufacturing of flanged part
［J］. The intermational Journal of Advanced Manufacturing Technology, 2017, 91(9-12):3121-3134.

［10］Asnafi N. On stretch and shrink flanging of sheet aluminium by fluid forming
［J］. Joumal of Materials Processing Technology, 1999, 96(1):198-214.

［11］Na J X, Chen W. One step positive approach for sheet metal forming simulation based on quasi-conjugate-gradient method
［J］. Chinese Joumal of Mechanical Engineering，2013，26(4):730-736.

［12］Fu L J, Dong X H, Wang P. Study on one-step simulation for the bending process of extruded profiles
［J］. The Intemational Journal of Advanced Manufacturing Technology, 2009, 43(11-12):1069-1080.

［13］GB/T 228.1—2010，金属材料拉伸试验第1部分：室温试验方法
［S］.

GB/T 228.1—2010，Metallic materials—Tensile testing—Part 1：Method of test at room temperature
［S］.

［14］GB/T 5027—2016，金属材料薄板和薄带塑性应变比(r值)的测定
［S］.

GB/T 5027—2016，Metallic materials—Sheet and strip—Determination of plastic strain ratio
［S］.

［15］杨伟俊. 飞机钣金橡皮成形回弹补偿方法及快速工艺准备系统研究
［D］.北京:北京航空航天大学,2011.

Yang W J.Research on Springback Compensation Method and Rapid Process Preparation System for Rubber Fluid-cell Porming Process
［D］.Beijing:Beihang University,2011.

［16］Cafuta G, Mole N, Stok B. An enhanced displacement adjustment method：Springback and thinning compensation
［J］. Materials and Design，2012，40：476-487.

［17］Zhang Z K, Wu J J, Zhang S, et al. A new iterative method for springback control based on theory analysis and displacement adjustment
［J］. Intemnational Joumal of Mechanical Sciences，2016，105：330-339.

［18］Zhang Z K, Wu J J, Guo R C,et al. A semi-analytical method for the springback prediction of tick-walld 3D tubes
［J］. Materials and Design，2016，99：57-67.

［19］王少辉, 蔡中义,李明哲.多点拉形中回弹的数值模拟
［J］.塑性工程学报,2009,16(2):57-61.

Wang S H, Cai Z Y, Li M Z. Numerical simulation research on springback of multi-point stretch forming
［J］. Jourmal of Plasticity Engineering,2009,16(2):57-61.

［20］胡爱萍, 王平,李德遵.影响弯曲件回弹的因素及控制方法
［J］.航天制造技术,2007，(2):57-59.

Hu A P, Wang P, Li D Z. The reason and control method of influencing the bending parts spring-back
［J］. Aerospace Manufacturing Technology,2007，(2):57-59.

［21］常荣福, 陈孝戴,周安龙.橡皮成形工艺及设备综述
［J］.北京航空学院学报,1980，(1):115-126.

Chang R F, Chen X D, Zhou A L. Assessment of the rubber forming process and the rubber forming press
［J］. Joumal of Beying Institute of Aeronautics and Astronautics,1980，(1):115-126.

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