| 切削刃钝圆导致的鳞刺 |
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| 引用本文： | 谢影明,周泽华.切削刃钝圆导致的鳞刺[J].华南理工大学学报(自然科学版),1990(1). |
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| 作者姓名： | 谢影明 周泽华 |
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| 作者单位： | 华南理工大学机械工程一系，华南理工大学机械工程一系 |
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| 摘 要： | 本文借助高频摄影技术对切削刃钝圆导致的鳞刺作了研究。通过对高频摄影所得的照片进行观察分析,描述了切削刃钝圆导致的鳞刺形成过程,并对刃前区裂纹的产生和切削刃钝圆半径与鳞刺高度的关系作了讨论。结果表明,切削刃钝圆导致的鳞刺形成过程可划分为抹拭、导裂、层积和切顶四个阶段;被切金属和切削刃之间停止相对滑动是导致刃前区产生裂纹的主要原因之一;鳞刺高度随切削刃钝圆半径的增大而增大。
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| 关 键 词： | 金属切削 刀刃 鳞刺 形成过程 |
ON THE SCALE CAUSED BY ROUNDED CUTTING EDGE |
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| Xie Yingming and Zhou Zehua.ON THE SCALE CAUSED BY ROUNDED CUTTING EDGE[J].Journal of South China University of Technology(Natural Science Edition),1990(1). |
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| Authors: | Xie Yingming and Zhou Zehua |
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| Institution: | 1st Dept.of Mech.Eng.South China Univ.of Tech. |
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| Abstract: | In this paper,the scale caused by rounded cutting edge is studied by means of high-frequency photography.Through observing and analyzing the photographs taken with a high-frequency camera, the forming process of scale caused by rounded cutting edge is described,and the initiation of the crack near cutting edge,the relation between radius of rounded cutting edge and the height of scale are discussed.The results show that the forming process of scale caused by rounded cutting edge is divided into four stages: wiping,lead cracking,accumulating and top cutting;that the stay of relative slip between the metal being cut and the cutting edge is one of the main causes leading to the initiation of the crack near the cutting edge;the height of the scale increases with the increase of the radius of the rounded cutting edge. |
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| Keywords: | metal cutting cutting edges scale forming process |
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