Analysis of stresses in micro-drills using the finite element method

被引：54

作者：

Hinds, BK ^{[1
]}

Treanor, GM ^{[1
]}

机构：

[1] Queens Univ, Sch Mech & Mfg Engn, Belfast BT9 5AH, Antrim, North Ireland

来源：

INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE | 2000年 / 40卷 / 10期

关键词：

micro-drills; drill stresses; printed circuit boards;

D O I：

10.1016/S0890-6955(00)00007-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The trend towards higher density printed circuit boards requires smaller holes down to 0.1 mm diameter to be drilled through the board layers. Drills of this size are inherently more susceptible to drill breakage and must be used with restricted operating parameters. In order to analyse the stresses occurring in microdrills, finite element methods are used. Three-dimensional models of drills are defined by setting node points of the drill geometry. Measured forces from experimental tests are used to determine drill loading, Principal stress isograms on drill cross-sections are presented for different drill geometries and correlation with actual drill life is made, (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1443 / 1456

页数：14