刘佳灏,杜勇,薛克敏,等.基于对比试验的 Q345 钢 135°矫正法折弯及回弹优化[J].精密成形工程,2015,7(4):31-36.
LIU Jia-hao,DU Yong,XUE Ke-min,et al.Optimization on 135毅 Orthosis Bending and Springback of Q345 Steel Plate Based on Contrast Test[J].Journal of Netshape Forming Engineering,2015,7(4):31-36. |
| 基于对比试验的 Q345 钢 135°矫正法折弯及回弹优化 |
| Optimization on 135毅 Orthosis Bending and Springback of Q345 Steel Plate Based on Contrast Test |
| 投稿时间：2015-04-22 修订日期：2015-07-10 |
| DOI：10.3969/j.issn.1674-6457.2015.04.007 |
| 中文关键词: 厚板折弯 对比实验 矫正法 回弹角 |
| 英文关键词: thick plate bending contrast test orthosis method springback angle |
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| 中文摘要: |
| 目的 针对自由回弹采用的补偿法寻找最优解过程繁杂,结果不稳定这一问题,寻找更为有效的折弯方式。 方法 利用 Pearson 相关系数和灰色系统理论,采用对比实验,以 16 mm 厚 Q345钢为研究对象,选择凸模圆角、摩擦因数及矫正量为变量,回弹角与最大成形力为目标函数,求得工艺参数对回弹角的关联系数。 再对优化的参数组合进行有限元模拟验证。 结果 矫正法回弹控制效果远远优于自由折弯模具的回弹控制效果。 结论 将优化获得的工艺参数进行有限元模拟验证,指导设计、试模,成形质量得到明显提高,对实际生产具有显著的指导意义。 |
| 英文摘要: |
| This paper explored more effective bending method targeting at the problem of complex process and unstable results by the compensating method for calculation of the free springback. This paper adopted the comparison test using Pearson related coefficients and the gray system theory. The test took the Q345 steel of 16 mm thickness as the research subject to obtain the correlation coefficient of the processing parameters to the springback angle, taking punch radius, friction coefficient and rectification as the variables and springback angle and maximum forming force as the objective functions. The FEM simulation was used to verify the optimized parameter combination. The springback control effect by the orthosis method was much better than that by the free bending mold. The FEM verification showed the design and the die trial with the optimized processing parameters can improve the forming quality and had significant guidance for practical production. |
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