基于逆向工程技术的反求因子回弹补偿法

发布时间：2018-04-10 06:16

本文选题：回弹　切入点：补偿因子　出处：《计算机集成制造系统》2015年06期

【摘要】：为减少冲压回弹导致的模具型面补偿的次数,在一步法模面几何修正的基础上,提出了反求因子补偿法:通过逆向工程技术获得试模冲压件的数字模型,将该模型当作假想的理论模型进行成形、回弹模拟,计算出仿真回弹量;由试模模面和试模件取差值获得真实补偿量,进而计算出补偿因子。假定在冲压件小变形、仿真参数、冲压工艺不变的情况下补偿因子基本保持不变,对实际设计零件做回弹仿真,再引入该补偿因子,计算出模具补偿型面。实验结果表明,该方法通过一次模面补偿,可有效控制回弹,提高补偿效率。
[Abstract]:In order to reduce the number of die surface compensation caused by stamping springback, a reverse factor compensation method is put forward on the basis of geometric modification of die surface in one step method: the digital model of die stamping parts is obtained by reverse engineering technology.The model is used as a hypothetical theoretical model for forming, springback simulation, and the simulation springback is calculated. The true compensation is obtained from the difference between the test die surface and the test module, and then the compensation factor is calculated.Assuming that the compensation factor remains basically unchanged in the case of small deformation of stamping parts, simulation parameters and stamping process, the springback simulation of the actual design parts is made, and then the compensation factor is introduced to calculate the compensation surface of the die.The experimental results show that the springback can be effectively controlled and the compensation efficiency can be improved by this method.
【作者单位】：华侨大学数字化视觉测量厦门市重点实验室;
【基金】：国家科技支撑计划资助项目(2012BAF12B15) 福建省教育厅科技资助项目(JA13018) 福建省科技计划资助项目(2008H0085)~~
【分类号】：TG386

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