摘要
为研究碳纤维蜂窝复合材料切削过程中切削宽度和切削方向对表面质量的影响,本文开展了高速切削碳纤维蜂窝实验,分析了切削过程中切削力的变化特征,获得了切削宽度和切削方向对切削力的影响规律。同时,观测了碳蜂窝典型表面缺陷形貌,分析了不同切削宽度和切削方向下表面缺陷的分布规律。进一步以蜂窝壁损伤面积占比作为表面质量的评价方法,定量研究了切削宽度和切削方向对于碳蜂窝表面质量的影响。实验结果表明:在碳纤维蜂窝复合材料加工过程中,减小切削宽度和改变切削方向可有效降低加工损伤。切削力随着切削宽度的增大呈现出增大的趋势;毛刺、撕裂、孔壁破损以及孔壁开胶等损伤现象也随着切削宽度的增大而增加。此外,碳纤维蜂窝复合材料的表面质量还与切削方向有关,相较于沿双层孔壁方向切削,当切削宽度分别为5、10及15 mm时,沿垂直于双层孔壁方向切削的损伤分别减小了22.5%、13.4%和8.7%。
To investigate the effect of cutting width and cutting direction on surface quality in the cutting process of carbon fiber honeycomb composites,high-speed cutting test of carbon fiber honeycomb was conducted.The variation characteristics of cutting force in the cutting process were analyzed to see the influence of the cutting width and cutting direction on cutting force.At the same time,the typical surface defect morphology of carbon fiber honeycomb was observed,and the distribution of surface defects under different cutting widths and cutting directions were analyzed.Furthermore,the proportion of honeycomb wall damage area was selected as characterization parameters of surface quality,and the influence of cutting width and cutting direction on the surface quality of honeycomb core was quantitatively scrutinized.Test results show that decreasing the cutting width and changing the cutting direction can effectively reduce the machining damage in the process of carbon fiber honeycomb composites.The cutting force increases with the growth of cutting width.The damage phenomena such as burr,tear,hole wall damage,or hole wall opening also increases with the growth of cutting width.Additionally,the surface quality of carbon fiber honeycomb composites is found related to the cutting direction.Compared with the cutting along the W direction,when the cutting widths are 5,10 and 15 mm,the cutting damage along the L direction is reduced by 22.5%,13.4%and 8.7%respectively.
作者
鲍永杰
马占鑫
史战立
陈晨
BAO Yongjie;MA Zhanxin;SHI Zhanli;CHEN Chen(Marine Engineering college,Dalian Maritime University,Dalian 116026,China;Naval Architecture and Ocean Engineering college,Dalian Maritime University,Dalian 116026,China)
出处
《材料科学与工艺》
CAS
CSCD
北大核心
2023年第4期18-23,共6页
Materials Science and Technology
基金
大连市科技创新基金(2022JJ12GX033)
国家自然科学基金资助项目(52105431)
中央高校基本科研业务费项目(3132022111)
国家海底工程技术与装备国际研究中心开放性基金项目(3132023356)。
关键词
蜂窝
复合材料
切削力
表面形貌
损伤评价
honeycomb
composites
cutting force
surface morphology
damage evaluation
