缓面零件单点渐进成形刀具轨迹优化数值模拟

发布时间：2018-02-23 18:28

本文关键词： 单点渐进成形刀具轨迹优化数值模拟板厚变化成形精度增量角度　出处：《塑性工程学报》2017年03期 　论文类型：期刊论文

【摘要】：利用有限元软件ANSYS/workbench,以平缓曲面零件为例,模拟零件单点渐进成过程,研究了优化方法中增量角度Δθ对零件厚度、成形精度、等效应变等方面的影响,并与传统固定增量步长方法进行对比。结果表明:加工层数相同时,优化方法更有助于提高板厚,且零件壁厚随着增量角度Δθ的增加而增加;优化方法较明显的提高了零件底部成形精度,无论增量角度Δθ取值多少,零件底部都能充分成形,与实验结果相吻合;加工层数相同时,在相同区域优化方法导致的板料等效应变大于固定增量步长成形方法,Δθ越小应变越均匀,但两种方法最终的等效应变趋于一致。
[Abstract]:By using the finite element software ANSYS / workbench, the effects of incremental angle 螖胃 on the thickness, forming accuracy and equivalent strain of the part are studied by simulating the process of single point progressive forming of the flat curved surface part, taking the flat curved surface part as an example, and studying the effect of increment angle 螖胃 on the thickness, forming accuracy and equivalent strain of the part. The results show that when the number of machining layers is the same, the optimization method is more helpful to increase the thickness of the plate, and the wall thickness of the part increases with the increment of the increment angle 螖胃. The optimization method obviously improves the forming accuracy of the bottom of the part. No matter how much the increment angle 螖胃 is, the bottom of the part can be fully formed, which coincides with the experimental results, and when the number of machining layers is the same, In the same region optimization method, the equivalent strain of sheet metal is larger than that of the fixed increment step forming method. The smaller the strain 螖胃 is, the more uniform the strain is, but the final equivalent strain of the two methods tends to be the same.
【作者单位】：合肥工业大学机械工程学院;
【分类号】：TG306

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