THE COUPLING EFFECT AND DAMAGE ANALYSIS DURING DRILLING CFRP LAMINATES WITH PLANE RAKE FACE TWIST DRILLS

Abstract

Abstract: In this paper, three plane rake facetwist drills with different rake angles were used to drill CFRP composite laminated with different processing parameters. This paper focuses on the influence of the coupling effect of rake angle, spindle speed and feed speed on the damage of borehole exit based on CFRP composite. The experimental results show that the coupling effect between the rake angle, the feed speed and the spindle speed can change the immediate pushing effect, the cutting effect and the physical properties of the borehole exit, and further affect the damage of the borehole exit. When the rake angle is 26°, the feed speed is 200 mm/min and the rake angle is 30°, the feed speed is 50 mm/min, the damage at the borehole exit firstly decreases and then increases with the increase of the spindle speed. Finally, according to the experimental results, the optimum processing parameters of each plane rake face twist drill are given.

Key words: CFRP, plane rake face twist drill, coupling effect, drilling damage

CLC Number:

TB332

LIU Li-ping, ZHANG Fang, LIAN Bo, ZHOU Chang-geng. THE COUPLING EFFECT AND DAMAGE ANALYSIS DURING DRILLING CFRP LAMINATES WITH PLANE RAKE FACE TWIST DRILLS[J]. COMPOSITES SCIENCE AND ENGINEERING, 2020, 0(12): 74-80.

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