锻压技术

不同分散角的下压点分散数控渐近成形轨迹生成

英文标题：Trajectory generation on decentralized CNC incremental forming of depression point under different dispersion angles

作者：李彩云冯辉郭国彬黄松申俊

单位：（成都飞机工业（集团）有限责任公司四川成都 610092）

关键词：下压点分散轨迹分散角最小厚度表面质量轮廓精度

分类号：TG335.5

出版年,卷(期):页码：2023,48(6):84-90

摘要：

针对采取下压点分散轨迹对板材进行加工时下压点分散角度不明确的问题，分析了在分散角分别为2°、5°和10°时下压点分散轨迹成形的板材质量，并采用有限元分析软件ANSYS和后处理软件LS-PrePost对该条件下的板材成形过程进行了分析。结果表明：在2°、5°和10°分散角的下压点分散轨迹下成形的板材，其最小厚度值大致相等，且板材的最小厚度均位于最底层的成形区；分散角为2°的下压点分散轨迹下成形板材的表面质量最差，分散角为5°的质量次之，分散角为10°的质量最好。有限元分析和成形实验结果表明:分散角为2°时成形板材的Z向偏差最大值和平均值均最大，轮廓精度最低；分散角为5°的Z向偏差最大值和平均值均居中，轮廓精度也居中；分散角为10°的Z向偏差最大值与平均值均最小，轮廓精度最高。

Aiming at the problem that the dispersion angle of the depression point was not clear when the dispersion trajectory of the depression point was used to process the plate, the quality of the plate formed by the dispersion trajectory of the depression point was analyzed at the dispersion angle of 2°, 5° and 10° respectively, and the forming process of the plate was analyzed by finite element analysis software ANSYS and post-processing software LS-PrePost. The results show that the minimum thickness values of the plate formed under the dispersion trajectory of the depression point at dispersion angles of 2°, 5° and 10° are approximately equal, and the thinnest thickness of the plate is located in the bottom forming area. Among them, the surface quality of the plate after forming is the worst under the dispersion trajectory of depression point with dispersion angle of 2°, followed by that with dispersion angle of 5°, and the best with dispersion angle of 10°. In addition, finite element analysis and forming experiments show that when the dispersion angle is 2°, the maximum value and average value of the Z-direction deviation of the formed plate are the largest, and the contour accuracy is the lowest. For dispersion angle of 5°, the maximum value and average value of the Z-direction deviation are both in the middle, and the contour accuracy is also in the middle. For dispersion angle of 10°, the maximum value and average value of the Z-direction deviation are the smallest, and the contour accuracy is the highest.

基金项目：

李彩云(1994-),女，硕士,工程师

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