| 引用本文: | 周井文,陈燕,傅玉灿,徐九华,胡安东,刘思齐.纤维切削角对CFRP加工缺陷的影响规律[J].哈尔滨工业大学学报,2015,47(7):110.DOI:10.11918/j.issn.0367-6234.2015.07.018 |
| ZHOU Jingwen,CHEN Yan,FU Yucan,XU Jiuhua,HU Andong,LIU Siqi.Influence of fiber cutting angle on the machining defects during slotting of CFRP[J].Journal of Harbin Institute of Technology,2015,47(7):110.DOI:10.11918/j.issn.0367-6234.2015.07.018 |
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| 摘要: |
| 为研究碳纤维增强复合材料(CFRP)在加工中出现毛刺、崩边等缺陷,提出基于纤维切削角的碳纤维每齿切削长度计算方法,分析毛刺缺陷的形成机制和发展规律．计算结果和验证试验表明:纤维切削角决定碳纤维每齿切削长度和受到作用的切削刃总数,随着纤维切削角增大,碳纤维每齿切削长度增大,而受到切削刃的作用频率降低. 产生毛刺的主要原因是碳纤维实际弯曲半径大于理论最小弯曲半径,碳纤维仅仅发生弯曲并没有断裂．当纤维切削角在0°～90 °时,缺陷形式为崩边;当纤维切削角在90°～180°时,出现毛刺缺陷,且毛刺长度随纤维切削角的增大而不断增大． |
| 关键词: 碳纤维增强复合材料(CFRP) 毛刺 纤维方向 纤维切削角 加工缺陷 |
| DOI：10.11918/j.issn.0367-6234.2015.07.018 |
| 分类号:TB33; TH145 |
| 基金项目:国家自然科学基金(51375234). |
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| Influence of fiber cutting angle on the machining defects during slotting of CFRP |
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ZHOU Jingwen, CHEN Yan, FU Yucan, XU Jiuhua, HU Andong, LIU Siqi
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(College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, 210016 Nanjing, China)
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| Abstract: |
| To solve the problem of machining defects such as burrs and chipping during machining of carbon fiber reinforced plastics (CFRP), a computing method of the length of carbon fiber cut by per tooth was proposed based on fiber cutting angle. This method explained the mechanism and regularity of burrs. The results of the computation and experiment showed that the length of carbon fiber cut by per tooth and the number of total cutting edges acted on the same carbon fiber were determined by the fiber cutting angle. With the increase of fiber cutting angle, the length of carbon fiber cut by per tooth increased and the frequency of the cutting action between the fiber and cutting edge decreased. The reason for the occurrence of burrs is that the actual bending radius is larger than the minimum bending radius. The carbon fiber tended to be bent instead of being fractured. Also chipping could be found within the fiber cutting angle range of 0~90°. Burr was observed when the fiber cutting angle was in the range of 90°~180° during the verification slotting experiment. And the length of burr increased with the increase of fiber cutting angle. |
| Key words: carbon fiber reinforced plastics (CFRP) burr fiber direction fiber cutting angle machining defect |
