Investigation on the burr formation mechanism in micro cutting

被引：83
|
作者：
Wu, Xian [1 ]
Li, Liang [1 ]
He, Ning [1 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Coll Mech & Elect Engn, Nanjing, Jiangsu, Peoples R China
来源：
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY | 2017年 / 47卷
基金：
中国国家自然科学基金;
关键词：
Micro cutting; Burr formation; Stress distribution; Cutting edge radius; RAKE ANGLE; THICKNESS; SIZE;
D O I：
10.1016/j.precisioneng.2016.08.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
It is desirable to minimize burr formation for improving part quality. This paper presents an investigation on the burr formation mechanism in micro cutting by taking into consideration the stress distribution around the cutting edge arc. The influences of the uncut chip thickness and the cutting edge radius on burr formation were investigated. Poisson burr is attributed to the side flow of the stagnation material at the bottom of the cutting edge arc. The stress distribution at the cutting edge arc has great influence on Poisson burr formation. The burr height decreases to the minimum value and then increases with reducing the uncut chip thickness due to the change of the maximum stress distribution. An optimum machining strategy also is suggested in micro milling of snake-shaped groove microstructure. (C) 2016 Elsevier Inc. All rights reserved.
引用
收藏
页码：191 / 196
页数：6
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