面向CFRP制孔毛刺抑制的钻头副刃改型方法

孟庆勋

doi:10.13433/j.cnki.1003-8728.2017.1115

面向CFRP制孔毛刺抑制的钻头副刃改型方法

doi: 10.13433/j.cnki.1003-8728.2017.1115

孟庆勋

1.
西北工业大学机电学院, 西安 710072

基金项目:

国家自然科学基金青年基金项目（51705426）资助

详细信息

作者简介:
孟庆勋(1989-),博士研究生,研究方向为碳纤维增强树脂基材料精密制孔,qingxunmeng@gmail.com

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- 被引次数: 0
出版历程
- 收稿日期: 2016-10-12
- 刊出日期: 2017-11-05

Modification Strategy of Drill Structure for Hole-exit Debur in Drilling of CFRP

Meng Qingxun

1.
College of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China

摘要

摘要: 分析CFRP制孔时孔出口处纤维的受力情况，结合钻头切削刃的切削形式揭示了孔周毛刺产生的原因，并给出了孔周毛刺的评价方法；根据局部纤维受力的方向定义了制孔过程中的“正向”切削和“反向”切削，基于“反向”切削的概念进行了副切削刃的改型；依据制孔时的动态角度和毛刺厚度确定了改型后形成的反向切削刃的角度，并给出了反向切削刃的刃磨方法。最后，利用多种工艺参数进行了CFRP制孔实验，验证了改型钻头相对于未改型钻头对孔周毛刺去除的有效性。
- CFRP /
- 制孔 /
- 毛刺 /
- 钻头改型 /
- 麻花钻
Abstract: Firstly, the bearing condition of the fibers around hole-exit in drilling of carbon fiber-reinforced polymer（CFRP) was analyzed. Based on the present analysis, the burr formation mechanism is presented and the quantification method for hole-exit burr was given. Secondly, the conception of “forward” and “reverse” cutting was defined. Then the minor cutting edge was modified according to the “reverse” cutting. Thirdly, the angles of the modification cutting edge were determined with respect to the dynamic drilling angle and the burr thickness. The grinding method was also presented. Lastly, the experiments were conducted to verify the validation of the modification drill bit in minimizing hole-exit burr.
- carbon fiber-reinforced polymer /
- drilling /
- burr /
- modification of drill structure /
- twist drill

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参考文献(15)

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