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首页> 外文期刊>The International Journal of Advanced Manufacturing Technology >Design of internal-chip-removal drill for CFRP drilling and study of influencing factors of drilling quality
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Design of internal-chip-removal drill for CFRP drilling and study of influencing factors of drilling quality

机译：CFRP钻探内部芯片拆卸钻探的设计与钻井质量影响因素研究

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摘要

In order to meet the requirements of green, high-efficiency, and high-quality hole-machining in carbon fiber reinforced polymer (CFRP), firstly, this work introduces the suction-type internal-chip-removal system, which could discharge the chips formed in the CFRP drilling process in a timely and efficient manner. And based on the system working principle, the design basis of the inner flow channel of the suction-type internal-chip-removal drill system is provided. Secondly, we studied the influence of the PCD drill structural parameters on the drilling force by experiment and obtain the conclusion that the drilling force will be increasing when the front angel is getting larger under the drilling parameters of n = 3000r/min and f = 200mm/min; however, it increased slowly when the front angel (gamma(1)) is in the range of 118 degrees <= gamma(1) < 130 degrees. Meanwhile, with the increase of the rear angle (alpha), the drilling force increases first and then decreases. Then, based on the research results above and combined with experiment and simulation of ABAQUS User subroutine to define material behavior (VUMAT), we completed the design of PCD double-peak angel blade for suction-type internal-chip-removal drill. Finally, we manufactured the drill for suction-type internal-chip-removal system, verified the accuracy of the design by experiment comparison, and researched the influence of chip-removal negative pressure on drilling defect.
机译：为了满足绿色，高效率和高质量的碳纤维增强聚合物（CFRP）的要求，首先，这项工作引入了吸入式内芯片去除系统，可以排出芯片以及时有效的方式在CFRP钻井过程中形成。并基于系统工作原理，提供了抽吸式内部芯片去除钻系统内流动通道的设计基础。其次，我们通过实验研究了PCD钻结构参数对钻孔力的影响，并获得了钻探力在N = 3000r / min的钻孔参数下越来越大时钻探力将增加的结论，并且F = 200mm / min;然而，当前天使（γ（1））在118度<=γ（1）<130度的范围内时，它会缓慢增加。同时，随着后角（α）的增加，钻孔力首先增加，然后减少。然后，基于上述研究结果并结合ABAQUS用户子程序的实验和仿真来定义材料行为（VUMAT），我们完成了PCD双峰天使刀片的设计，用于吸入式内芯片拆卸钻。最后，我们制造了用于吸入式内部芯片去除系统的钻探，通过实验比较验证了设计的准确性，并研究了芯片去除负压对钻孔缺陷的影响。

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