尺寸效果,高推力,有限的散热,和工具退化只是深微钻带来的一些挑战,强调有效过程控制以确保质量的重要性。在本文中,提出了使用直径为0.138mm的微钻对纯镁进行微钻孔工艺的研究,以实现纵横比等于36。研究了切削参数每齿进给量fz和切削速度vc的变化对推力的影响,根据毛刺高度对支撑孔质量进行评估,入口,和内径。结果表明,fz显著影响孔的质量。事实上,随着fz的增加,毛刺高度减小,内径接近公称直径。然而,优化每齿进给量高的孔几何形状会增加推力,损害工具寿命。事实上,发现推力对两个切削参数的显着依赖性。在这种情况下,增加vc可以通过诱导材料软化来减轻高推力。研究结果通过精炼参数提高了制造精度,确保镁基微元件的质量和可靠性。
Size effects, high thrust forces, limited heat dissipation, and tool deterioration are just some of the challenges that deep microdrilling poses, underscoring the importance of effective process control to ensure quality. In this paper, an investigation performed on a microdrilling process on pure magnesium using a 0.138 mm diameter microdrill to achieve an aspect ratio equal to 36 is proposed. The effect of the variation of the cutting parameters feed per tooth fz and cutting speed vc was studied on thrust force, supporting hole quality evaluation in terms of burr height, entrance, and inner diameters. The results showed that fz significantly influences the hole quality. In fact, as fz increases, the burr height decreases and the inner diameter approaches the nominal diameter. However, optimizing the hole geometry with high feed per tooth values increases the thrust forces, compromising tool life. In fact, a significant dependence of the thrust force on both cutting parameters was found. In this scenario, increasing vc can mitigate the high thrust forces by inducing material softening. The study results improve precision manufacturing by refining parameters, ensuring the quality and reliability of magnesium-based microcomponents.