Chip thickening in deep-hole drilling

被引：42
|
作者：
Ke, Feng [1 ]
Ni, Jun
Stephenson, D. A.
机构：
[1] Automot Ind Corp Grp, Automot Engn Acad Shanghai, Shanghai, Peoples R China
[2] Univ Michigan, Dept Mech Engn, Ann Arbor, MI 48109 USA
[3] Gen Motor, Ypsilanti, MI 48198 USA
来源：
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE | 2006年 / 46卷 / 12-13期
关键词：
deep hole drilling; chip formation; string chip; continues chip; chip thickening; drill forces; force prediction;
D O I：
10.1016/j.ijmachtools.2005.09.022
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In conventional turning and milling cutting process models, chips are free of external forces after leaving the cutting area. However, in a drilling process, chip flowing is constrained by the drill flute, causing the change of chip shape and drilling forces. In this research, it is found that when drilling deep holes, the chip thickness increases as drilling progresses deeper into the workpiece. It is also found that during a deep-hole drilling process a significant part of the drilling force increase is due to the chip thickening effect. An analytical model was developed to predict the force increase caused by chip thickening. Experiments have been carried out to verify the model. (C) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1500 / 1507
页数：8
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