Drilling Force and Chip Morphology in Drilling of PCB Supported Hole

Drilling Force and Chip Morphology in Drilling of PCB Supported Hole
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DOI：
10.4028/www.scientific.net/amr.188.429
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发表时间：
2011-03
期刊：
Advanced Materials Research
影响因子：
--
通讯作者：
L.P. Yang;L. Huang;C. Wang;L. Zheng;P. Ma;Y. Song
L.P. Yang;L. Huang;C. Wang;L. Zheng;P. Ma;Y. Song
中科院分区：
其他
文献类型：
--
作者：
L.P. Yang;L. Huang;C. Wang;L. Zheng;P. Ma;Y. Song

文献摘要

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印刷电路板（PCB）的支撑孔是用两种不同的钻头钻制的。在不同的切削参数下，钻削力（推力和扭矩）和切屑形态进行了检查，并讨论了两种钻头的效果。结果表明，钻削力和切屑形态受进给速度、主轴转速和钻头形状的影响。推力随进给速度的增大而增大，随主轴转速的增大而减小。钻头几何形状的优化可以显著降低钻削过程中的推力，有效地断屑，提高钻削过程中的排屑能力。
Supported holes of Printed circuit board (PCB) are drilled with two different drill bits. Drilling force (thrust force and torque) and chip morphology are examined at different cutting parameters, and the effects of the two drills are discussed. The results indicate that the drilling force and chip morphology are affected by the feed rate, spindle speed and drill shape. Thrust force increases with the increasing feed rate, and decreases with the increasing spindle speed. Optimization of drill geometry can reduce the thrust force significantly, and is effective in chip breaking which can improve the chip evacuation during the drilling process.