孙红磊,马世博,王伟,等.车用千斤顶上支成形有限元分析及工艺优化[J].精密成形工程,2022,14(6):78-85.
SUN Hong-lei,MA Shi-bo,WANG Wei,et al.Finite Element Analysis and Process Optimization of Forming on Automobile Jack's Upper Stent[J].Journal of Netshape Forming Engineering,2022,14(6):78-85. |
| 车用千斤顶上支成形有限元分析及工艺优化 |
| Finite Element Analysis and Process Optimization of Forming on Automobile Jack's Upper Stent |
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| DOI：10.3969/j.issn.1674-6457.2022.06.011 |
| 中文关键词: 千斤顶上支 有限元模拟 外缘曲面翻边 正交实验 |
| 英文关键词: jack's upper stent finite element simulation outer edge flanging orthogonal test |
| 基金项目:国家自然科学基金(51975509);河北省自然科学基金(E2021208025);河北省高层次人才资助项目(A202101016) |
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| 中文摘要: |
| 目的 解决千斤顶上支外缘不规则曲面混合翻边成形过程中容易出现的破裂等缺陷问题。方法 基于Dynaform软件对千斤顶上支进行冲压仿真模拟，分析凸凹模圆角半径、凸凹模间隙、压边力对千斤顶上支成形的影响规律，并结合成形极限图、厚度变化云图等，采用控制变量法、正交实验对其工艺和参数进行优化。结果 经有限元分析和正交优化的千斤顶外缘曲面翻边工艺如下:凸模圆角为过渡圆角结构，其齿顶大圆角和边缘小圆角半径分别为3.5 mm和0.7 mm，凹模圆角半径为3.5 mm，凸凹模间隙为2.8 mm，压边力为50 000 N。结论 采用最佳工艺方案可生产出合格制件，实际成形件的减薄情况与模拟结果基本一致，所得成形工艺参数对制件的影响规律可为研究不规则曲面混合翻边成形提供一定的参考。 |
| 英文摘要: |
| In order to solve the problem of cracks and other defects in the forming process of mixed flanging with irregular surface on the outer edge of the Jack’s upper stent. Based on Dynaform software, the stamping simulation of Jack upper stent was carried out, and the influence laws of punch and die fillet radius, clearance between punch and die, and blank holder force on Jack upper stent forming were analyzed. Combined with forming limit diagram and thickness change cloud diagram, the process and parameters were optimized by control variable method and orthogonal test. After finite element analysis and orthogonal optimization, theouter edge flanging of the jack was as follows:The punch is a transition fillet structure, and the radius of the fillet at the root and the small fillet at the edge are 3.5 mm and 0.7 mm respectively; die fillet radius is 3.5 mm; clearance between punch and die is 2.8 mm; blank holder force is 50 000 N. Qualified parts can be produced by using the best process scheme. The thinning of the actual formed parts is basically consistent with the simulation results. The influence law of forming process parameters on parts obtained in this paper provides a certain reference basis for the study of mixed flanging forming of irregular surface. |
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