| 铣削过程刀具破损原因的探讨 |
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| 引用本文： | 李振加,黎志仁,伊兵,郑敏利,严复刚,顾祖慰,朱烈光,马彪.铣削过程刀具破损原因的探讨[J].机械工程学报,1993,29(4):93-96. |
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| 作者姓名： | 李振加 黎志仁 伊兵 郑敏利 严复刚 顾祖慰 朱烈光 马彪 |
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| 作者单位： | 哈尔滨科学技术大学;哈尔滨汽轮机厂 |
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| 摘 要： | 探讨了切出过程中的负剪切现象及其对刀具破损的影响。采用高速摄影及测量切出时铣削力的变化，并通过弹性力学分析证明：切出时的负剪切现象使卷曲的切屑以刀刃为轴线转动，导致刀楔的应力严重恶化是刀具破损的主要原因。最后提出了一些防止刀具破损的措施。
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| 关 键 词： | 负剪切 破损 铣刀 |
STUDY ON CAUSE OF MILLING CUTTER DESTRUCTION |
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| Li Zhenjia,Li Zhiren,Yi Bing,Zheng Minli,Yan Fugong,Gu Zuwei,Zhu Lieguang,Ma Biao.STUDY ON CAUSE OF MILLING CUTTER DESTRUCTION[J].Chinese Journal of Mechanical Engineering,1993,29(4):93-96. |
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| Authors: | Li Zhenjia Li Zhiren Yi Bing Zheng Minli Yan Fugong Gu Zuwei Zhu Lieguang Ma Biao |
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| Affiliation: | Harbin University of Science & Technology Harbin Tubogenerator Factory |
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| Abstract: | The phenomenan of negative shear and its influence on the destruction of cutters are further studied. It is proved that the negative shear which results in the curly cutting scrap rotates on the cutting chin and makes the strees distribution worse at the outer wedge is the primal cause of the cutter destruction, by means of high speed picture and measurement of milling force variation at cut-out and analysis of elastic thoory. At last, the measures to decreases cutter destruction are proposed. |
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| Keywords: | Destruction Milling cutter Negative shear |
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