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| T2铜箔空化射流柔性微冲裁机理分析 |
| Analysis on Flexible Micro Blanking Mechanism of T2 Copper Foil with Cavitation Jet |
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| DOI：10.3969/j.issn.1674-6457.2023.07.008 |
| 中文关键词: 空化 空化射流 箔材 微冲裁 柔性加工 |
| 英文关键词: cavitation cavitation jet foil micro blanking flexible machining |
| 基金项目:泰州市科技成果转化项目（SCG202220）；泰州市科技支撑计划（TG202247）；扬州市重点研发项目（SCY2022010022）；无锡市科技攻关项目（G20222007）；江苏省学位与研究生教育教学改革课题（SJCX23_2080） |
| Author Name | Affiliation | | ZHU Cong | School of Mechanical Engineering, Jiangsu University, Jiangsu Zhenjiang 212000, China | | WANG Yun | School of Mechanical Engineering, Jiangsu University, Jiangsu Zhenjiang 212000, China | | LI Fu-zhu | School of Mechanical Engineering, Jiangsu University, Jiangsu Zhenjiang 212000, China | | ZHANG Kun | School of Mechanical Engineering, Jiangsu University, Jiangsu Zhenjiang 212000, China | | CHEN Shi-jian | School of Mechanical Engineering, Jiangsu University, Jiangsu Zhenjiang 212000, China | | HU Xin-long | School of Mechanical Engineering, Jiangsu University, Jiangsu Zhenjiang 212000, China | | MENG Wei | School of Mechanical Engineering, Jiangsu University, Jiangsu Zhenjiang 212000, China | | JIANG Shi-ying | School of Mechanical Engineering, Jiangsu University, Jiangsu Zhenjiang 212000, China |
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| 中文摘要: |
| 目的 分析针对不同形状特征时空化射流箔材微冲裁工艺的加工效果，确定工艺参数的影响规律。方法 通过在3种模具（正三角形、正六边形以及圆形模具）下设计6种特征尺寸，分析空化射流对不同厚度T2铜箔的冲裁加工效果，同时通过单因素实验法确定空化射流的入射压力、喷孔直径以及靶距3种工艺参数对微冲裁加工能力与成形质量的影响规律，记录不同工艺参数下T2铜箔的最大可冲裁箔厚。结果 T2铜箔的最大可冲裁箔厚与凹模特征尺寸之间存在线性关系，并且入射压力的增大可显著提高空化射流微冲裁工艺的最大可冲裁箔厚，然而，过大的喷孔直径与靶距均会造成最大可冲裁箔厚下降。通过对实验结果进行表征，发现正多边形冲裁件在边角处会出现裂纹、撕裂等缺陷，而圆形冲裁件的冲裁轮廓无明显缺陷，冲裁质量较好。结论 空化射流柔性微冲裁工艺对正多边形冲裁件边角处的加工效果较差，但加工的圆形冲裁件具有良好且均匀的轮廓质量。该工艺的加工能力随入射压力的提高而提高，且在靶距为120 mm、喷孔直径为1.6 mm时较优。 |
| 英文摘要: |
| The work aims to explore the blanking ability of flexible micro blanking process with cavitation jet for different shape characteristics and determine the effect of process parameters. By designing equilateral triangle, hexagonal and circular molds with six characteristic sizes, the blanking ability of cavitation jet on T2 copper foil with different thickness was analyzed. Meanwhile, the affecting relationship of incident pressure of cavitation jet, diameter of jet hole and target distance on micro blanking ability and forming quality was determined by single factor experiment. Then, the maximum blanking thickness of T2 copper foil under different process parameters was recorded. There was a linear relationship between the maximum blanking thickness of T2 copper foil and the concave mold size, and the increase of incident pressure could significantly improve the maximum blanking thickness achieved by micro blanking process with cavitation jet. However, too large hole diameter and target distance led to the decrease of the maximum blanking thickness. Through the characterization of the experimental results, it was found that the regular polygon blanking parts had cracks, tearing and other defects in the corners, while the circular blanking parts had no obvious defects in the blanking contour, and the blanking quality was good. The blanking ability of flexible micro blanking process with cavitation jet is insufficient for the edges and corners of regular polygon blanking parts, but the circular blanking parts processed have good and uniform contour quality. Meanwhile, the blanking ability of this process is improved with the increase of incident pressure, and it is better when the target distance is 120 mm and the diameter of jet hole is 1.6 mm. |
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