不同钻尖几何角度平前刀面麻花钻对CFRP制孔的影响

doi:10.19936/j.cnki.2096-8000.20211028.011

复合材料科学与工程 ›› 2021, Vol. 0 ›› Issue (10): 74-82.DOI: 10.19936/j.cnki.2096-8000.20211028.011

不同钻尖几何角度平前刀面麻花钻对CFRP制孔的影响

刘礼平¹, 连波¹, 朱学明², 周长庚³, 夏平锋⁴

1.中国民航大学航空工程学院,天津300300;
2.天津职业技术师范大学机械工程学院,天津300222;
3.中国航空制造技术研究院复合材料技术中心,北京101300;
4.天津威恳德测控设备技术有限公司,天津300356

收稿日期:2021-03-22 出版日期:2021-10-28 发布日期:2021-11-03
作者简介:刘礼平(1983-),男,博士,副教授,主要从事复合材料加工技术方面的研究,liuliping_tj@163.com。
基金资助:
中央高校基本科研业务费(3122019081)

Effect of plane rake faced twist drills with different drill geometric angle on CFRP

LIU Li-ping¹, LIAN Bo¹, ZHU Xue-ming², ZHOU Chang-geng³, XIA Ping-feng⁴

1. School of Aerospace Engineering, Civil Aviation University of China, Tianjin 300300, China;
2. Faculty of Mechanical Engineering, Tianjin University of Technology and Education, Tianjin 300222, China;
3. Composite Materials Technology Center, China Academy of Aeronautic Manufacturing Technology, Beijing 101300, China;
4. Tianjin Weikende Measurement and Control Equipment Technology Company, Tianjin 300356, China

Received:2021-03-22 Online:2021-10-28 Published:2021-11-03

摘要/Abstract

摘要： 针对钻削碳纤维复合材料时存在的出入口质量较差问题,提出使用一种新型的平前刀面麻花钻作为钻削刀具对碳纤维复合材料进行钻削,分析螺旋角、顶角和后角等几何角度对轴向力和出入口质量的影响规律。研究表明螺旋角和后角的增加可以减小轴向力,顶角的增加会增大轴向力。入口损伤受顶角与螺旋角影响较大,较大螺旋角和较小的后角可以抑制出口毛刺的形成。最后得出平前刀面麻花钻钻削碳纤维复合材料的钻头最佳角度。

关键词: CFRP, 平前刀面麻花钻, 钻尖结构, 制孔损伤

Abstract: The delamination produced during CFRP drilling will affect its structural strength seriously. Delamination is closely related to the thrust force during drilling hole, which is closely related to the tool, so it is particularly important to choose the tools with appropriate geometric structure. In this paper, the research objects of drill geometry included the helix angle, point angle and clearance angle of plane rake faced twist drills, which was used to investigate the influence law of different geometric angles on the thrust force and drilling quality. What's more, the influence degree of different geometric angles on the delamination of drilling hole at entrance and exit was also analyzed. The results show that optimum geometry of plane rake faced twist drills for drilling CFRP is the helix angle of about 35°, the point angle of about 120° and the clearance angle of about 12°.

Key words: CFRP, plane rake faced twist drill, drill geometry, delamination

中图分类号:

TB332

刘礼平, 连波, 朱学明, 周长庚, 夏平锋. 不同钻尖几何角度平前刀面麻花钻对CFRP制孔的影响[J]. 复合材料科学与工程, 2021, 0(10): 74-82.

LIU Li-ping, LIAN Bo, ZHU Xue-ming, ZHOU Chang-geng, XIA Ping-feng. Effect of plane rake faced twist drills with different drill geometric angle on CFRP[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(10): 74-82.

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不同钻尖几何角度平前刀面麻花钻对CFRP制孔的影响

Effect of plane rake faced twist drills with different drill geometric angle on CFRP

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